./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_spec1_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 f0289d2bc768d77152556c65688d1c231999d9919b651d65a3b9e8da8ee9b3f9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 17:20:45,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 17:20:45,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 17:20:45,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 17:20:45,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 17:20:45,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 17:20:45,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 17:20:45,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 17:20:45,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 17:20:45,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 17:20:45,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 17:20:45,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 17:20:45,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 17:20:45,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 17:20:45,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 17:20:45,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 17:20:45,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 17:20:45,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 17:20:45,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 17:20:45,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 17:20:45,718 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 17:20:45,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 17:20:45,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 17:20:45,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 17:20:45,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 17:20:45,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 17:20:45,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 17:20:45,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 17:20:45,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 17:20:45,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 17:20:45,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 17:20:45,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 17:20:45,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 17:20:45,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 17:20:45,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 17:20:45,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 17:20:45,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 17:20:45,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 17:20:45,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 17:20:45,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 17:20:45,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 17:20:45,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 17:20:45,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 17:20:45,754 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 17:20:45,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 17:20:45,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 17:20:45,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 17:20:45,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 17:20:45,755 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 17:20:45,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 17:20:45,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 17:20:45,756 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 17:20:45,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 17:20:45,757 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 17:20:45,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 17:20:45,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 17:20:45,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 17:20:45,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 17:20:45,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 17:20:45,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 17:20:45,758 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 17:20:45,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 17:20:45,758 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 17:20:45,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 17:20:45,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 17:20:45,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 17:20:45,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 17:20:45,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:20:45,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 17:20:45,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 17:20:45,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 17:20:45,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 17:20:45,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 17:20:45,760 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 17:20:45,760 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 17:20:45,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 17:20:45,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0289d2bc768d77152556c65688d1c231999d9919b651d65a3b9e8da8ee9b3f9 [2022-07-13 17:20:45,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 17:20:45,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 17:20:45,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 17:20:45,989 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 17:20:45,990 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 17:20:45,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c [2022-07-13 17:20:46,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f43c89998/a767b15f816b4da98e6fb25f1a8b1437/FLAGbc3d7ddde [2022-07-13 17:20:46,426 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 17:20:46,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c [2022-07-13 17:20:46,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f43c89998/a767b15f816b4da98e6fb25f1a8b1437/FLAGbc3d7ddde [2022-07-13 17:20:46,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f43c89998/a767b15f816b4da98e6fb25f1a8b1437 [2022-07-13 17:20:46,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 17:20:46,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 17:20:46,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 17:20:46,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 17:20:46,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 17:20:46,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:20:46" (1/1) ... [2022-07-13 17:20:46,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e460ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:46, skipping insertion in model container [2022-07-13 17:20:46,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:20:46" (1/1) ... [2022-07-13 17:20:46,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 17:20:46,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 17:20:47,012 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_spec1_product22.cil.c[27271,27284] [2022-07-13 17:20:47,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:20:47,121 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 17:20:47,148 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_spec1_product22.cil.c[27271,27284] [2022-07-13 17:20:47,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:20:47,196 INFO L208 MainTranslator]: Completed translation [2022-07-13 17:20:47,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:47 WrapperNode [2022-07-13 17:20:47,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 17:20:47,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 17:20:47,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 17:20:47,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 17:20:47,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:47" (1/1) ... [2022-07-13 17:20:47,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:47" (1/1) ... [2022-07-13 17:20:47,268 INFO L137 Inliner]: procedures = 94, calls = 346, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 865 [2022-07-13 17:20:47,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 17:20:47,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 17:20:47,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 17:20:47,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 17:20:47,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:47" (1/1) ... [2022-07-13 17:20:47,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:47" (1/1) ... [2022-07-13 17:20:47,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:47" (1/1) ... [2022-07-13 17:20:47,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:47" (1/1) ... [2022-07-13 17:20:47,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:47" (1/1) ... [2022-07-13 17:20:47,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:47" (1/1) ... [2022-07-13 17:20:47,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:47" (1/1) ... [2022-07-13 17:20:47,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 17:20:47,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 17:20:47,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 17:20:47,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 17:20:47,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:47" (1/1) ... [2022-07-13 17:20:47,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:20:47,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:47,363 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) [2022-07-13 17:20:47,366 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 [2022-07-13 17:20:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-07-13 17:20:47,409 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-07-13 17:20:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 17:20:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-13 17:20:47,409 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-13 17:20:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-13 17:20:47,409 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-13 17:20:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-13 17:20:47,411 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-13 17:20:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-13 17:20:47,411 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-13 17:20:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-13 17:20:47,411 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-13 17:20:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-13 17:20:47,412 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-13 17:20:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-13 17:20:47,412 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-13 17:20:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-13 17:20:47,412 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-13 17:20:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-13 17:20:47,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-13 17:20:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-13 17:20:47,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-13 17:20:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-13 17:20:47,413 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-13 17:20:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-13 17:20:47,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-13 17:20:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-13 17:20:47,413 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-13 17:20:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-13 17:20:47,414 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-13 17:20:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-13 17:20:47,414 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-13 17:20:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-13 17:20:47,414 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-13 17:20:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-13 17:20:47,415 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-13 17:20:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-13 17:20:47,415 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-13 17:20:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 17:20:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-13 17:20:47,415 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-13 17:20:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-13 17:20:47,416 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-13 17:20:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-13 17:20:47,416 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-13 17:20:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-13 17:20:47,416 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-13 17:20:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-07-13 17:20:47,416 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-07-13 17:20:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-07-13 17:20:47,417 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-07-13 17:20:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 17:20:47,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 17:20:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-13 17:20:47,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-13 17:20:47,555 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 17:20:47,557 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 17:20:48,334 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 17:20:48,348 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 17:20:48,348 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 17:20:48,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:20:48 BoogieIcfgContainer [2022-07-13 17:20:48,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 17:20:48,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 17:20:48,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 17:20:48,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 17:20:48,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 05:20:46" (1/3) ... [2022-07-13 17:20:48,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687a21ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:20:48, skipping insertion in model container [2022-07-13 17:20:48,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:47" (2/3) ... [2022-07-13 17:20:48,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687a21ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:20:48, skipping insertion in model container [2022-07-13 17:20:48,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:20:48" (3/3) ... [2022-07-13 17:20:48,356 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product22.cil.c [2022-07-13 17:20:48,364 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 17:20:48,365 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 17:20:48,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 17:20:48,409 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@51d30d80, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4c5b0199 [2022-07-13 17:20:48,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 17:20:48,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 579 states, 450 states have (on average 1.6866666666666668) internal successors, (759), 473 states have internal predecessors, (759), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) [2022-07-13 17:20:48,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-13 17:20:48,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:48,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:20:48,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:48,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:48,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1153428289, now seen corresponding path program 1 times [2022-07-13 17:20:48,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:48,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616582913] [2022-07-13 17:20:48,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:48,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:20:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:20:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:20:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:20:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:20:49,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:49,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616582913] [2022-07-13 17:20:49,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616582913] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:49,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440421321] [2022-07-13 17:20:49,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:49,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:49,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:49,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:49,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 17:20:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 17:20:49,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:49,408 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 17:20:49,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:49,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440421321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:49,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:49,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2022-07-13 17:20:49,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931742795] [2022-07-13 17:20:49,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:49,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 17:20:49,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:49,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 17:20:49,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:20:49,436 INFO L87 Difference]: Start difference. First operand has 579 states, 450 states have (on average 1.6866666666666668) internal successors, (759), 473 states have internal predecessors, (759), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-13 17:20:49,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:49,488 INFO L93 Difference]: Finished difference Result 600 states and 991 transitions. [2022-07-13 17:20:49,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 17:20:49,490 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 83 [2022-07-13 17:20:49,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:49,507 INFO L225 Difference]: With dead ends: 600 [2022-07-13 17:20:49,508 INFO L226 Difference]: Without dead ends: 571 [2022-07-13 17:20:49,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:20:49,512 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:49,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:20:49,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-07-13 17:20:49,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2022-07-13 17:20:49,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 444 states have (on average 1.6846846846846846) internal successors, (748), 465 states have internal predecessors, (748), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-13 17:20:49,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 945 transitions. [2022-07-13 17:20:49,577 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 945 transitions. Word has length 83 [2022-07-13 17:20:49,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:49,578 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 945 transitions. [2022-07-13 17:20:49,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-13 17:20:49,579 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 945 transitions. [2022-07-13 17:20:49,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-13 17:20:49,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:49,583 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:20:49,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:49,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-13 17:20:49,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:49,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:49,798 INFO L85 PathProgramCache]: Analyzing trace with hash 833216110, now seen corresponding path program 1 times [2022-07-13 17:20:49,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:49,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847767890] [2022-07-13 17:20:49,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:49,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:20:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:20:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:20:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:50,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:20:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:50,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:50,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:50,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:20:50,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:50,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847767890] [2022-07-13 17:20:50,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847767890] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:50,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13646371] [2022-07-13 17:20:50,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:50,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:50,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:50,164 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:50,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 17:20:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:50,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:20:50,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 17:20:50,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:50,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13646371] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:50,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:50,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-13 17:20:50,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014749219] [2022-07-13 17:20:50,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:50,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:20:50,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:50,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:20:50,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:20:50,483 INFO L87 Difference]: Start difference. First operand 571 states and 945 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:20:50,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:50,627 INFO L93 Difference]: Finished difference Result 1133 states and 1882 transitions. [2022-07-13 17:20:50,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 17:20:50,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2022-07-13 17:20:50,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:50,631 INFO L225 Difference]: With dead ends: 1133 [2022-07-13 17:20:50,631 INFO L226 Difference]: Without dead ends: 571 [2022-07-13 17:20:50,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:20:50,636 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 14 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:50,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2786 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:20:50,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-07-13 17:20:50,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2022-07-13 17:20:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 444 states have (on average 1.6824324324324325) internal successors, (747), 465 states have internal predecessors, (747), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-13 17:20:50,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 944 transitions. [2022-07-13 17:20:50,679 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 944 transitions. Word has length 85 [2022-07-13 17:20:50,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:50,679 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 944 transitions. [2022-07-13 17:20:50,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:20:50,680 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 944 transitions. [2022-07-13 17:20:50,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-13 17:20:50,682 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:50,682 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:20:50,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 17:20:50,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-13 17:20:50,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:50,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:50,898 INFO L85 PathProgramCache]: Analyzing trace with hash -108590114, now seen corresponding path program 1 times [2022-07-13 17:20:50,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:50,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402293888] [2022-07-13 17:20:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:50,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:20:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 17:20:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:20:51,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:51,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402293888] [2022-07-13 17:20:51,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402293888] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:51,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18380700] [2022-07-13 17:20:51,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:51,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:51,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:51,242 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:51,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 17:20:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:20:51,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:51,527 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 17:20:51,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:51,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18380700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:51,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:51,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-13 17:20:51,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030260945] [2022-07-13 17:20:51,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:51,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:20:51,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:51,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:20:51,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:20:51,533 INFO L87 Difference]: Start difference. First operand 571 states and 944 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:20:51,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:51,603 INFO L93 Difference]: Finished difference Result 1133 states and 1880 transitions. [2022-07-13 17:20:51,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 17:20:51,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2022-07-13 17:20:51,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:51,619 INFO L225 Difference]: With dead ends: 1133 [2022-07-13 17:20:51,619 INFO L226 Difference]: Without dead ends: 571 [2022-07-13 17:20:51,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:20:51,624 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 12 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:51,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2786 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:20:51,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-07-13 17:20:51,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2022-07-13 17:20:51,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 444 states have (on average 1.6801801801801801) internal successors, (746), 465 states have internal predecessors, (746), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-13 17:20:51,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 943 transitions. [2022-07-13 17:20:51,663 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 943 transitions. Word has length 87 [2022-07-13 17:20:51,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:51,664 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 943 transitions. [2022-07-13 17:20:51,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:20:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 943 transitions. [2022-07-13 17:20:51,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-13 17:20:51,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:51,666 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:20:51,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:51,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:51,886 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:51,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:51,887 INFO L85 PathProgramCache]: Analyzing trace with hash -846790546, now seen corresponding path program 1 times [2022-07-13 17:20:51,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:51,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437525628] [2022-07-13 17:20:51,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:51,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:20:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 17:20:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:20:52,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:52,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437525628] [2022-07-13 17:20:52,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437525628] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:52,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086606802] [2022-07-13 17:20:52,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:52,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:52,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:52,154 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:52,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 17:20:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:20:52,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 17:20:52,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:52,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086606802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:52,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:52,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-13 17:20:52,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298521026] [2022-07-13 17:20:52,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:52,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:20:52,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:52,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:20:52,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:20:52,434 INFO L87 Difference]: Start difference. First operand 571 states and 943 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:20:52,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:52,478 INFO L93 Difference]: Finished difference Result 1140 states and 1887 transitions. [2022-07-13 17:20:52,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:20:52,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2022-07-13 17:20:52,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:52,482 INFO L225 Difference]: With dead ends: 1140 [2022-07-13 17:20:52,482 INFO L226 Difference]: Without dead ends: 580 [2022-07-13 17:20:52,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:20:52,484 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 20 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:52,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2786 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:20:52,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-07-13 17:20:52,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2022-07-13 17:20:52,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 452 states have (on average 1.676991150442478) internal successors, (758), 473 states have internal predecessors, (758), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-13 17:20:52,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 955 transitions. [2022-07-13 17:20:52,499 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 955 transitions. Word has length 89 [2022-07-13 17:20:52,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:52,500 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 955 transitions. [2022-07-13 17:20:52,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:20:52,500 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 955 transitions. [2022-07-13 17:20:52,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 17:20:52,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:52,502 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:20:52,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:52,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:52,720 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:52,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:52,720 INFO L85 PathProgramCache]: Analyzing trace with hash 84274444, now seen corresponding path program 1 times [2022-07-13 17:20:52,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:52,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778862488] [2022-07-13 17:20:52,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:52,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 17:20:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:20:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 17:20:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,007 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:20:53,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:53,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778862488] [2022-07-13 17:20:53,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778862488] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:53,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232812648] [2022-07-13 17:20:53,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:53,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:53,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:53,009 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:53,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 17:20:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:20:53,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 17:20:53,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:53,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232812648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:53,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:53,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-13 17:20:53,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185484657] [2022-07-13 17:20:53,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:53,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:20:53,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:53,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:20:53,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:20:53,280 INFO L87 Difference]: Start difference. First operand 580 states and 955 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:20:53,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:53,324 INFO L93 Difference]: Finished difference Result 1142 states and 1888 transitions. [2022-07-13 17:20:53,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:20:53,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2022-07-13 17:20:53,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:53,327 INFO L225 Difference]: With dead ends: 1142 [2022-07-13 17:20:53,327 INFO L226 Difference]: Without dead ends: 580 [2022-07-13 17:20:53,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:20:53,329 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 18 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:53,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2786 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:20:53,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-07-13 17:20:53,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2022-07-13 17:20:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 452 states have (on average 1.674778761061947) internal successors, (757), 473 states have internal predecessors, (757), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-13 17:20:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 954 transitions. [2022-07-13 17:20:53,342 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 954 transitions. Word has length 90 [2022-07-13 17:20:53,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:53,343 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 954 transitions. [2022-07-13 17:20:53,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:20:53,343 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 954 transitions. [2022-07-13 17:20:53,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 17:20:53,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:53,344 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:20:53,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:53,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:53,559 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:53,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:53,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1944240334, now seen corresponding path program 1 times [2022-07-13 17:20:53,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:53,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654541992] [2022-07-13 17:20:53,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:53,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 17:20:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 17:20:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 17:20:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:20:53,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:53,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654541992] [2022-07-13 17:20:53,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654541992] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:53,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374938385] [2022-07-13 17:20:53,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:53,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:53,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:53,845 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:53,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 17:20:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:20:54,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:54,094 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 17:20:54,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:54,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374938385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:54,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:54,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-13 17:20:54,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115309349] [2022-07-13 17:20:54,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:54,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:20:54,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:54,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:20:54,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:20:54,095 INFO L87 Difference]: Start difference. First operand 580 states and 954 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:20:54,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:54,142 INFO L93 Difference]: Finished difference Result 1142 states and 1887 transitions. [2022-07-13 17:20:54,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:20:54,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2022-07-13 17:20:54,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:54,145 INFO L225 Difference]: With dead ends: 1142 [2022-07-13 17:20:54,146 INFO L226 Difference]: Without dead ends: 580 [2022-07-13 17:20:54,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:20:54,148 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 17 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:54,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2786 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:20:54,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-07-13 17:20:54,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2022-07-13 17:20:54,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 452 states have (on average 1.6725663716814159) internal successors, (756), 473 states have internal predecessors, (756), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2022-07-13 17:20:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 953 transitions. [2022-07-13 17:20:54,167 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 953 transitions. Word has length 91 [2022-07-13 17:20:54,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:54,167 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 953 transitions. [2022-07-13 17:20:54,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:20:54,168 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 953 transitions. [2022-07-13 17:20:54,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 17:20:54,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:54,170 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:20:54,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:54,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:54,381 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:54,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:54,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1230447408, now seen corresponding path program 1 times [2022-07-13 17:20:54,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:54,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181836457] [2022-07-13 17:20:54,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:54,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:20:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 17:20:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:20:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:20:54,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:54,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181836457] [2022-07-13 17:20:54,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181836457] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:54,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567038007] [2022-07-13 17:20:54,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:54,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:54,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:54,742 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:54,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 17:20:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 17:20:55,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:55,100 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:20:55,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:55,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567038007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:55,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:55,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-07-13 17:20:55,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977572645] [2022-07-13 17:20:55,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:55,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:20:55,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:55,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:20:55,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:20:55,127 INFO L87 Difference]: Start difference. First operand 580 states and 953 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:20:55,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:55,207 INFO L93 Difference]: Finished difference Result 1161 states and 1917 transitions. [2022-07-13 17:20:55,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:20:55,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2022-07-13 17:20:55,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:55,210 INFO L225 Difference]: With dead ends: 1161 [2022-07-13 17:20:55,210 INFO L226 Difference]: Without dead ends: 603 [2022-07-13 17:20:55,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:20:55,212 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 148 mSDsluCounter, 4547 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 5479 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:55,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 5479 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:20:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2022-07-13 17:20:55,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 599. [2022-07-13 17:20:55,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 468 states have (on average 1.670940170940171) internal successors, (782), 491 states have internal predecessors, (782), 102 states have call successors, (102), 27 states have call predecessors, (102), 28 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2022-07-13 17:20:55,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 984 transitions. [2022-07-13 17:20:55,226 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 984 transitions. Word has length 92 [2022-07-13 17:20:55,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:55,226 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 984 transitions. [2022-07-13 17:20:55,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:20:55,226 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 984 transitions. [2022-07-13 17:20:55,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 17:20:55,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:55,228 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:20:55,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:55,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:55,447 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:55,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:55,447 INFO L85 PathProgramCache]: Analyzing trace with hash -363395183, now seen corresponding path program 1 times [2022-07-13 17:20:55,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:55,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79050613] [2022-07-13 17:20:55,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:55,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:20:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 17:20:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:20:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 17:20:55,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:55,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79050613] [2022-07-13 17:20:55,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79050613] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:55,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163208146] [2022-07-13 17:20:55,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:55,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:55,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:55,735 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:55,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 17:20:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:20:55,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:20:55,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:55,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163208146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:55,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:55,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-13 17:20:55,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026789422] [2022-07-13 17:20:55,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:55,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:20:55,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:55,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:20:55,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:20:55,995 INFO L87 Difference]: Start difference. First operand 599 states and 984 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:20:56,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:56,104 INFO L93 Difference]: Finished difference Result 1202 states and 1991 transitions. [2022-07-13 17:20:56,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 17:20:56,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2022-07-13 17:20:56,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:56,108 INFO L225 Difference]: With dead ends: 1202 [2022-07-13 17:20:56,108 INFO L226 Difference]: Without dead ends: 599 [2022-07-13 17:20:56,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:20:56,110 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 135 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:56,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2603 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:20:56,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-07-13 17:20:56,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2022-07-13 17:20:56,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 468 states have (on average 1.6602564102564104) internal successors, (777), 491 states have internal predecessors, (777), 102 states have call successors, (102), 27 states have call predecessors, (102), 28 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2022-07-13 17:20:56,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 979 transitions. [2022-07-13 17:20:56,124 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 979 transitions. Word has length 92 [2022-07-13 17:20:56,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:56,124 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 979 transitions. [2022-07-13 17:20:56,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:20:56,125 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 979 transitions. [2022-07-13 17:20:56,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-13 17:20:56,126 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:56,126 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:20:56,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:56,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-13 17:20:56,334 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:56,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:56,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1579336143, now seen corresponding path program 1 times [2022-07-13 17:20:56,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:56,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159846966] [2022-07-13 17:20:56,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:56,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:20:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 17:20:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:20:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 17:20:56,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:56,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159846966] [2022-07-13 17:20:56,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159846966] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:56,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940262109] [2022-07-13 17:20:56,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:56,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:56,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:56,621 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:56,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 17:20:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:20:56,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:20:56,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:56,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940262109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:56,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:56,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-13 17:20:56,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242548224] [2022-07-13 17:20:56,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:56,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:20:56,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:56,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:20:56,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:20:56,882 INFO L87 Difference]: Start difference. First operand 599 states and 979 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:20:56,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:56,961 INFO L93 Difference]: Finished difference Result 1202 states and 1981 transitions. [2022-07-13 17:20:56,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 17:20:56,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2022-07-13 17:20:56,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:56,966 INFO L225 Difference]: With dead ends: 1202 [2022-07-13 17:20:56,966 INFO L226 Difference]: Without dead ends: 599 [2022-07-13 17:20:56,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:20:56,969 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 129 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:56,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2603 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:20:56,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-07-13 17:20:56,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2022-07-13 17:20:56,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 468 states have (on average 1.6495726495726495) internal successors, (772), 491 states have internal predecessors, (772), 102 states have call successors, (102), 27 states have call predecessors, (102), 28 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2022-07-13 17:20:56,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 974 transitions. [2022-07-13 17:20:56,981 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 974 transitions. Word has length 94 [2022-07-13 17:20:56,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:56,982 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 974 transitions. [2022-07-13 17:20:56,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:20:56,982 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 974 transitions. [2022-07-13 17:20:56,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-13 17:20:56,983 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:56,983 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:20:57,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:57,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:57,199 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:57,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:57,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1374655759, now seen corresponding path program 1 times [2022-07-13 17:20:57,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:57,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825707509] [2022-07-13 17:20:57,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:57,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:20:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:20:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:20:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,503 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 17:20:57,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:57,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825707509] [2022-07-13 17:20:57,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825707509] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:57,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892771296] [2022-07-13 17:20:57,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:57,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:57,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:57,506 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:57,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 17:20:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:20:57,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:57,758 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:20:57,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:57,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892771296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:57,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:57,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-13 17:20:57,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797767248] [2022-07-13 17:20:57,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:57,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:20:57,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:57,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:20:57,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:20:57,761 INFO L87 Difference]: Start difference. First operand 599 states and 974 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:20:57,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:57,874 INFO L93 Difference]: Finished difference Result 1238 states and 2029 transitions. [2022-07-13 17:20:57,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:20:57,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2022-07-13 17:20:57,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:57,877 INFO L225 Difference]: With dead ends: 1238 [2022-07-13 17:20:57,877 INFO L226 Difference]: Without dead ends: 665 [2022-07-13 17:20:57,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:20:57,880 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 179 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:57,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2613 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:20:57,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-07-13 17:20:57,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 650. [2022-07-13 17:20:57,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 518 states have (on average 1.6544401544401544) internal successors, (857), 541 states have internal predecessors, (857), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2022-07-13 17:20:57,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1058 transitions. [2022-07-13 17:20:57,893 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1058 transitions. Word has length 96 [2022-07-13 17:20:57,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:57,894 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 1058 transitions. [2022-07-13 17:20:57,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:20:57,894 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1058 transitions. [2022-07-13 17:20:57,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-13 17:20:57,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:57,895 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:20:57,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:58,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 17:20:58,107 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:58,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:58,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1560093727, now seen corresponding path program 1 times [2022-07-13 17:20:58,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:58,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833698415] [2022-07-13 17:20:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:58,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:20:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:20:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:20:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 17:20:58,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:58,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833698415] [2022-07-13 17:20:58,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833698415] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:58,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769706327] [2022-07-13 17:20:58,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:58,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:58,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:58,396 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:58,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 17:20:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 17:20:58,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:58,702 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:20:58,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:58,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769706327] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:58,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:58,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-07-13 17:20:58,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644862150] [2022-07-13 17:20:58,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:58,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:20:58,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:58,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:20:58,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:20:58,705 INFO L87 Difference]: Start difference. First operand 650 states and 1058 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:20:58,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:58,822 INFO L93 Difference]: Finished difference Result 1230 states and 2009 transitions. [2022-07-13 17:20:58,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:20:58,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2022-07-13 17:20:58,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:58,825 INFO L225 Difference]: With dead ends: 1230 [2022-07-13 17:20:58,825 INFO L226 Difference]: Without dead ends: 672 [2022-07-13 17:20:58,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-13 17:20:58,827 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 177 mSDsluCounter, 5365 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6277 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:58,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6277 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:20:58,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-07-13 17:20:58,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 650. [2022-07-13 17:20:58,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 518 states have (on average 1.6544401544401544) internal successors, (857), 541 states have internal predecessors, (857), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2022-07-13 17:20:58,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1058 transitions. [2022-07-13 17:20:58,841 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1058 transitions. Word has length 97 [2022-07-13 17:20:58,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:58,842 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 1058 transitions. [2022-07-13 17:20:58,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:20:58,842 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1058 transitions. [2022-07-13 17:20:58,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-13 17:20:58,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:58,843 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:20:58,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:59,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-13 17:20:59,061 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:59,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:59,062 INFO L85 PathProgramCache]: Analyzing trace with hash -657127167, now seen corresponding path program 1 times [2022-07-13 17:20:59,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:59,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965719772] [2022-07-13 17:20:59,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:59,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:20:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:20:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:20:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,347 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 17:20:59,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:59,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965719772] [2022-07-13 17:20:59,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965719772] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:59,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286415802] [2022-07-13 17:20:59,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:59,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:59,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:59,349 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:59,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 17:20:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:20:59,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:20:59,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:59,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286415802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:59,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:59,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-13 17:20:59,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370534151] [2022-07-13 17:20:59,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:59,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:20:59,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:59,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:20:59,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:20:59,606 INFO L87 Difference]: Start difference. First operand 650 states and 1058 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:20:59,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:59,719 INFO L93 Difference]: Finished difference Result 1238 states and 2027 transitions. [2022-07-13 17:20:59,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:20:59,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2022-07-13 17:20:59,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:59,728 INFO L225 Difference]: With dead ends: 1238 [2022-07-13 17:20:59,728 INFO L226 Difference]: Without dead ends: 650 [2022-07-13 17:20:59,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:20:59,731 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 173 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:59,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2613 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:20:59,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-07-13 17:20:59,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 650. [2022-07-13 17:20:59,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 518 states have (on average 1.6447876447876448) internal successors, (852), 541 states have internal predecessors, (852), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2022-07-13 17:20:59,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1053 transitions. [2022-07-13 17:20:59,743 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1053 transitions. Word has length 97 [2022-07-13 17:20:59,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:59,743 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 1053 transitions. [2022-07-13 17:20:59,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:20:59,744 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1053 transitions. [2022-07-13 17:20:59,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-13 17:20:59,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:59,745 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:20:59,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:59,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-13 17:20:59,963 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:59,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:59,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2131344960, now seen corresponding path program 1 times [2022-07-13 17:20:59,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:59,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021917661] [2022-07-13 17:20:59,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:59,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:21:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 17:21:00,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:00,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021917661] [2022-07-13 17:21:00,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021917661] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:00,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234784266] [2022-07-13 17:21:00,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:00,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:00,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:00,307 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:00,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 17:21:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 17:21:00,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:00,604 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:21:00,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:00,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234784266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:00,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:00,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-07-13 17:21:00,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137542333] [2022-07-13 17:21:00,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:00,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:21:00,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:00,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:21:00,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:21:00,606 INFO L87 Difference]: Start difference. First operand 650 states and 1053 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:21:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:00,682 INFO L93 Difference]: Finished difference Result 1165 states and 1901 transitions. [2022-07-13 17:21:00,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:21:00,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2022-07-13 17:21:00,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:00,685 INFO L225 Difference]: With dead ends: 1165 [2022-07-13 17:21:00,685 INFO L226 Difference]: Without dead ends: 674 [2022-07-13 17:21:00,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:21:00,688 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 134 mSDsluCounter, 4514 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5438 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:00,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5438 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:21:00,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-07-13 17:21:00,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 669. [2022-07-13 17:21:00,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 534 states have (on average 1.6441947565543071) internal successors, (878), 559 states have internal predecessors, (878), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2022-07-13 17:21:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1083 transitions. [2022-07-13 17:21:00,700 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1083 transitions. Word has length 97 [2022-07-13 17:21:00,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:00,701 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 1083 transitions. [2022-07-13 17:21:00,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:21:00,701 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1083 transitions. [2022-07-13 17:21:00,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 17:21:00,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:00,702 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:00,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:00,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 17:21:00,917 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:00,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:00,918 INFO L85 PathProgramCache]: Analyzing trace with hash -532419301, now seen corresponding path program 1 times [2022-07-13 17:21:00,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:00,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325395127] [2022-07-13 17:21:00,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:00,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:21:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,175 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 17:21:01,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:01,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325395127] [2022-07-13 17:21:01,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325395127] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:01,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530546480] [2022-07-13 17:21:01,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:01,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:01,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:01,176 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:01,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 17:21:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 17:21:01,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:21:01,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:01,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530546480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:01,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:01,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-07-13 17:21:01,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609976632] [2022-07-13 17:21:01,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:01,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:21:01,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:01,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:21:01,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:21:01,469 INFO L87 Difference]: Start difference. First operand 669 states and 1083 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:21:01,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:01,544 INFO L93 Difference]: Finished difference Result 1195 states and 1952 transitions. [2022-07-13 17:21:01,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:21:01,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-07-13 17:21:01,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:01,547 INFO L225 Difference]: With dead ends: 1195 [2022-07-13 17:21:01,547 INFO L226 Difference]: Without dead ends: 704 [2022-07-13 17:21:01,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:21:01,549 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 143 mSDsluCounter, 4504 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5428 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:01,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5428 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:21:01,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-07-13 17:21:01,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 669. [2022-07-13 17:21:01,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 534 states have (on average 1.6441947565543071) internal successors, (878), 559 states have internal predecessors, (878), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2022-07-13 17:21:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1083 transitions. [2022-07-13 17:21:01,562 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1083 transitions. Word has length 98 [2022-07-13 17:21:01,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:01,563 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 1083 transitions. [2022-07-13 17:21:01,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:21:01,563 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1083 transitions. [2022-07-13 17:21:01,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 17:21:01,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:01,564 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:01,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:01,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:01,784 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:01,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:01,785 INFO L85 PathProgramCache]: Analyzing trace with hash -710202981, now seen corresponding path program 1 times [2022-07-13 17:21:01,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:01,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615606378] [2022-07-13 17:21:01,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:01,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:21:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,049 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 17:21:02,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:02,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615606378] [2022-07-13 17:21:02,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615606378] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:02,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589420095] [2022-07-13 17:21:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:02,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:02,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:02,062 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:02,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 17:21:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 17:21:02,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:21:02,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:02,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589420095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:02,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:02,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-07-13 17:21:02,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720657537] [2022-07-13 17:21:02,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:02,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:21:02,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:02,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:21:02,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:21:02,343 INFO L87 Difference]: Start difference. First operand 669 states and 1083 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:21:02,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:02,467 INFO L93 Difference]: Finished difference Result 1180 states and 1926 transitions. [2022-07-13 17:21:02,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:21:02,468 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-07-13 17:21:02,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:02,470 INFO L225 Difference]: With dead ends: 1180 [2022-07-13 17:21:02,470 INFO L226 Difference]: Without dead ends: 689 [2022-07-13 17:21:02,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-07-13 17:21:02,473 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 177 mSDsluCounter, 5371 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6285 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:02,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6285 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:21:02,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-07-13 17:21:02,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 669. [2022-07-13 17:21:02,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 534 states have (on average 1.6441947565543071) internal successors, (878), 559 states have internal predecessors, (878), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2022-07-13 17:21:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1083 transitions. [2022-07-13 17:21:02,485 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1083 transitions. Word has length 98 [2022-07-13 17:21:02,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:02,485 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 1083 transitions. [2022-07-13 17:21:02,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:21:02,486 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1083 transitions. [2022-07-13 17:21:02,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 17:21:02,487 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:02,487 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:02,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:02,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-13 17:21:02,705 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:02,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:02,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1528045300, now seen corresponding path program 1 times [2022-07-13 17:21:02,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:02,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959990942] [2022-07-13 17:21:02,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:02,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 17:21:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:21:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 17:21:02,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:02,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959990942] [2022-07-13 17:21:02,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959990942] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:02,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171794311] [2022-07-13 17:21:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:02,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:02,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:02,972 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:02,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 17:21:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:21:03,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 17:21:03,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:03,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171794311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:03,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:03,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-07-13 17:21:03,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123224320] [2022-07-13 17:21:03,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:03,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:21:03,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:03,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:21:03,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:21:03,226 INFO L87 Difference]: Start difference. First operand 669 states and 1083 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:21:03,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:03,256 INFO L93 Difference]: Finished difference Result 1232 states and 2011 transitions. [2022-07-13 17:21:03,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:21:03,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 98 [2022-07-13 17:21:03,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:03,259 INFO L225 Difference]: With dead ends: 1232 [2022-07-13 17:21:03,259 INFO L226 Difference]: Without dead ends: 669 [2022-07-13 17:21:03,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:21:03,261 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 23 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2755 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:03,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2755 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:21:03,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-07-13 17:21:03,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 669. [2022-07-13 17:21:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 534 states have (on average 1.6367041198501873) internal successors, (874), 559 states have internal predecessors, (874), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2022-07-13 17:21:03,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1079 transitions. [2022-07-13 17:21:03,274 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1079 transitions. Word has length 98 [2022-07-13 17:21:03,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:03,274 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 1079 transitions. [2022-07-13 17:21:03,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:21:03,275 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1079 transitions. [2022-07-13 17:21:03,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 17:21:03,276 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:03,276 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:03,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:03,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-13 17:21:03,491 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:03,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:03,492 INFO L85 PathProgramCache]: Analyzing trace with hash 630742072, now seen corresponding path program 1 times [2022-07-13 17:21:03,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:03,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349011063] [2022-07-13 17:21:03,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:03,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:21:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,798 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 17:21:03,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:03,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349011063] [2022-07-13 17:21:03,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349011063] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:03,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919207153] [2022-07-13 17:21:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:03,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:03,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:03,810 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:03,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 17:21:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 17:21:04,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:04,103 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:21:04,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:04,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919207153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:04,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:04,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-07-13 17:21:04,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789634114] [2022-07-13 17:21:04,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:04,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:21:04,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:04,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:21:04,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:21:04,105 INFO L87 Difference]: Start difference. First operand 669 states and 1079 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:21:04,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:04,211 INFO L93 Difference]: Finished difference Result 1180 states and 1923 transitions. [2022-07-13 17:21:04,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:21:04,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-07-13 17:21:04,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:04,213 INFO L225 Difference]: With dead ends: 1180 [2022-07-13 17:21:04,214 INFO L226 Difference]: Without dead ends: 689 [2022-07-13 17:21:04,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-07-13 17:21:04,216 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 185 mSDsluCounter, 5334 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 6242 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:04,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 6242 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:21:04,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-07-13 17:21:04,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 669. [2022-07-13 17:21:04,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 534 states have (on average 1.6367041198501873) internal successors, (874), 559 states have internal predecessors, (874), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2022-07-13 17:21:04,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1079 transitions. [2022-07-13 17:21:04,228 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1079 transitions. Word has length 99 [2022-07-13 17:21:04,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:04,228 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 1079 transitions. [2022-07-13 17:21:04,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:21:04,229 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1079 transitions. [2022-07-13 17:21:04,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-13 17:21:04,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:04,230 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:04,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:04,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-13 17:21:04,448 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:04,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:04,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1838001088, now seen corresponding path program 1 times [2022-07-13 17:21:04,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:04,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58678212] [2022-07-13 17:21:04,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:04,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:21:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,732 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 17:21:04,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:04,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58678212] [2022-07-13 17:21:04,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58678212] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:04,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139295854] [2022-07-13 17:21:04,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:04,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:04,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:04,734 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:04,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-13 17:21:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 17:21:04,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:04,963 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 17:21:04,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:04,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139295854] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:04,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:04,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-07-13 17:21:04,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337991936] [2022-07-13 17:21:04,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:04,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:21:04,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:04,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:21:04,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:21:04,964 INFO L87 Difference]: Start difference. First operand 669 states and 1079 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:21:04,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:04,999 INFO L93 Difference]: Finished difference Result 1288 states and 2093 transitions. [2022-07-13 17:21:04,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 17:21:05,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 100 [2022-07-13 17:21:05,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:05,002 INFO L225 Difference]: With dead ends: 1288 [2022-07-13 17:21:05,002 INFO L226 Difference]: Without dead ends: 705 [2022-07-13 17:21:05,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:21:05,004 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 38 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:05,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2731 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:21:05,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-07-13 17:21:05,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 693. [2022-07-13 17:21:05,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 558 states have (on average 1.6164874551971327) internal successors, (902), 583 states have internal predecessors, (902), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2022-07-13 17:21:05,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1107 transitions. [2022-07-13 17:21:05,017 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1107 transitions. Word has length 100 [2022-07-13 17:21:05,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:05,018 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1107 transitions. [2022-07-13 17:21:05,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:21:05,018 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1107 transitions. [2022-07-13 17:21:05,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-13 17:21:05,019 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:05,019 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:05,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:05,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-13 17:21:05,227 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:05,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:05,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1929514969, now seen corresponding path program 1 times [2022-07-13 17:21:05,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:05,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738469481] [2022-07-13 17:21:05,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:05,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:21:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,500 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 17:21:05,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:05,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738469481] [2022-07-13 17:21:05,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738469481] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:05,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721449815] [2022-07-13 17:21:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:05,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:05,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:05,502 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:05,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-13 17:21:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 17:21:05,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:21:06,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:06,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721449815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:06,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:06,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2022-07-13 17:21:06,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643583112] [2022-07-13 17:21:06,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:06,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:21:06,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:06,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:21:06,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:21:06,057 INFO L87 Difference]: Start difference. First operand 693 states and 1107 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:21:08,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:08,322 INFO L93 Difference]: Finished difference Result 2256 states and 3727 transitions. [2022-07-13 17:21:08,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 17:21:08,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 100 [2022-07-13 17:21:08,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:08,329 INFO L225 Difference]: With dead ends: 2256 [2022-07-13 17:21:08,329 INFO L226 Difference]: Without dead ends: 1770 [2022-07-13 17:21:08,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:21:08,332 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 4622 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 3494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:08,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4803 Valid, 2527 Invalid, 3494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 17:21:08,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2022-07-13 17:21:08,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1583. [2022-07-13 17:21:08,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1261 states have (on average 1.6582077716098336) internal successors, (2091), 1304 states have internal predecessors, (2091), 256 states have call successors, (256), 60 states have call predecessors, (256), 65 states have return successors, (265), 233 states have call predecessors, (265), 251 states have call successors, (265) [2022-07-13 17:21:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2612 transitions. [2022-07-13 17:21:08,375 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2612 transitions. Word has length 100 [2022-07-13 17:21:08,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:08,376 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 2612 transitions. [2022-07-13 17:21:08,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:21:08,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2612 transitions. [2022-07-13 17:21:08,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-13 17:21:08,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:08,379 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:08,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:08,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:08,595 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:08,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:08,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1250053609, now seen corresponding path program 1 times [2022-07-13 17:21:08,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:08,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566537277] [2022-07-13 17:21:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:08,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:21:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:21:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:21:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 17:21:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 17:21:09,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:09,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566537277] [2022-07-13 17:21:09,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566537277] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:09,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874491073] [2022-07-13 17:21:09,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:09,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:09,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:09,071 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:09,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-13 17:21:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 2081 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 17:21:09,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:21:09,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:09,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874491073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:09,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:09,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-13 17:21:09,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358242086] [2022-07-13 17:21:09,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:09,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:21:09,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:09,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:21:09,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:21:09,410 INFO L87 Difference]: Start difference. First operand 1583 states and 2612 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 17:21:09,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:09,555 INFO L93 Difference]: Finished difference Result 3235 states and 5411 transitions. [2022-07-13 17:21:09,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:21:09,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2022-07-13 17:21:09,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:09,563 INFO L225 Difference]: With dead ends: 3235 [2022-07-13 17:21:09,563 INFO L226 Difference]: Without dead ends: 1860 [2022-07-13 17:21:09,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:21:09,570 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 210 mSDsluCounter, 2794 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 3780 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:09,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 3780 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:21:09,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2022-07-13 17:21:09,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1592. [2022-07-13 17:21:09,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1270 states have (on average 1.6535433070866141) internal successors, (2100), 1313 states have internal predecessors, (2100), 256 states have call successors, (256), 60 states have call predecessors, (256), 65 states have return successors, (265), 233 states have call predecessors, (265), 251 states have call successors, (265) [2022-07-13 17:21:09,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2621 transitions. [2022-07-13 17:21:09,657 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2621 transitions. Word has length 139 [2022-07-13 17:21:09,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:09,657 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2621 transitions. [2022-07-13 17:21:09,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 17:21:09,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2621 transitions. [2022-07-13 17:21:09,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-13 17:21:09,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:09,661 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:09,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:09,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:09,874 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:09,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:09,875 INFO L85 PathProgramCache]: Analyzing trace with hash 522636725, now seen corresponding path program 1 times [2022-07-13 17:21:09,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:09,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862702714] [2022-07-13 17:21:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:09,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:21:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:21:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:21:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 17:21:10,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:10,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862702714] [2022-07-13 17:21:10,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862702714] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:10,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298983993] [2022-07-13 17:21:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:10,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:10,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:10,376 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:10,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-13 17:21:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 2088 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 17:21:10,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:10,784 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 17:21:10,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:10,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298983993] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:10,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:10,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-13 17:21:10,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097396492] [2022-07-13 17:21:10,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:10,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:21:10,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:10,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:21:10,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:21:10,786 INFO L87 Difference]: Start difference. First operand 1592 states and 2621 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-13 17:21:12,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:12,959 INFO L93 Difference]: Finished difference Result 4262 states and 7069 transitions. [2022-07-13 17:21:12,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 17:21:12,960 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 141 [2022-07-13 17:21:12,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:12,972 INFO L225 Difference]: With dead ends: 4262 [2022-07-13 17:21:12,973 INFO L226 Difference]: Without dead ends: 2711 [2022-07-13 17:21:12,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2022-07-13 17:21:12,979 INFO L413 NwaCegarLoop]: 1195 mSDtfsCounter, 1718 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 4619 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 2932 SdHoareTripleChecker+Invalid, 4981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 4619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:12,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1800 Valid, 2932 Invalid, 4981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 4619 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 17:21:12,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2022-07-13 17:21:13,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2485. [2022-07-13 17:21:13,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 1956 states have (on average 1.635480572597137) internal successors, (3199), 2008 states have internal predecessors, (3199), 420 states have call successors, (420), 89 states have call predecessors, (420), 108 states have return successors, (463), 398 states have call predecessors, (463), 415 states have call successors, (463) [2022-07-13 17:21:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 4082 transitions. [2022-07-13 17:21:13,074 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 4082 transitions. Word has length 141 [2022-07-13 17:21:13,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:13,074 INFO L495 AbstractCegarLoop]: Abstraction has 2485 states and 4082 transitions. [2022-07-13 17:21:13,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-13 17:21:13,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 4082 transitions. [2022-07-13 17:21:13,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-13 17:21:13,078 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:13,078 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:13,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:13,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:13,291 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:13,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:13,292 INFO L85 PathProgramCache]: Analyzing trace with hash 834819641, now seen corresponding path program 1 times [2022-07-13 17:21:13,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:13,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556358132] [2022-07-13 17:21:13,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:13,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:13,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:13,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:13,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:13,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:13,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:13,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:13,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:21:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:13,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:13,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:13,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:13,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:13,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:13,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:13,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:13,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:21:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:13,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 17:21:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:13,683 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 17:21:13,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:13,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556358132] [2022-07-13 17:21:13,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556358132] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:13,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039528781] [2022-07-13 17:21:13,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:13,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:13,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:13,696 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:13,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-13 17:21:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:13,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 2088 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 17:21:13,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:14,091 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 17:21:14,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:14,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039528781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:14,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:14,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-07-13 17:21:14,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548592454] [2022-07-13 17:21:14,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:14,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:21:14,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:14,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:21:14,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:21:14,093 INFO L87 Difference]: Start difference. First operand 2485 states and 4082 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-13 17:21:14,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:14,418 INFO L93 Difference]: Finished difference Result 2600 states and 4272 transitions. [2022-07-13 17:21:14,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:21:14,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 142 [2022-07-13 17:21:14,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:14,430 INFO L225 Difference]: With dead ends: 2600 [2022-07-13 17:21:14,430 INFO L226 Difference]: Without dead ends: 2585 [2022-07-13 17:21:14,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:21:14,432 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 888 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:14,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 1656 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 17:21:14,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2022-07-13 17:21:14,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 2494. [2022-07-13 17:21:14,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2494 states, 1965 states have (on average 1.6325699745547073) internal successors, (3208), 2017 states have internal predecessors, (3208), 420 states have call successors, (420), 89 states have call predecessors, (420), 108 states have return successors, (463), 398 states have call predecessors, (463), 415 states have call successors, (463) [2022-07-13 17:21:14,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 4091 transitions. [2022-07-13 17:21:14,512 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 4091 transitions. Word has length 142 [2022-07-13 17:21:14,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:14,512 INFO L495 AbstractCegarLoop]: Abstraction has 2494 states and 4091 transitions. [2022-07-13 17:21:14,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-13 17:21:14,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 4091 transitions. [2022-07-13 17:21:14,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-13 17:21:14,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:14,516 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:14,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:14,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:14,731 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:14,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:14,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1096816748, now seen corresponding path program 1 times [2022-07-13 17:21:14,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:14,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525996078] [2022-07-13 17:21:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:14,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:14,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:14,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:14,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:14,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:14,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:14,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:14,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:21:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:14,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:15,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:15,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:15,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:15,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:15,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:15,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:15,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:21:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:15,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 17:21:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:15,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:21:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:15,135 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 17:21:15,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:15,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525996078] [2022-07-13 17:21:15,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525996078] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:15,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617056363] [2022-07-13 17:21:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:15,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:15,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:15,137 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:15,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-13 17:21:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:15,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 2104 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 17:21:15,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 17:21:15,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:15,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617056363] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:15,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:15,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-13 17:21:15,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500165197] [2022-07-13 17:21:15,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:15,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:21:15,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:15,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:21:15,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:21:15,492 INFO L87 Difference]: Start difference. First operand 2494 states and 4091 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:21:15,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:15,786 INFO L93 Difference]: Finished difference Result 2670 states and 4333 transitions. [2022-07-13 17:21:15,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 17:21:15,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2022-07-13 17:21:15,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:15,799 INFO L225 Difference]: With dead ends: 2670 [2022-07-13 17:21:15,799 INFO L226 Difference]: Without dead ends: 2655 [2022-07-13 17:21:15,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-07-13 17:21:15,801 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 906 mSDsluCounter, 2754 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 3697 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:15,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 3697 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 17:21:15,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2022-07-13 17:21:15,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 2596. [2022-07-13 17:21:15,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 2043 states have (on average 1.6231032794909448) internal successors, (3316), 2095 states have internal predecessors, (3316), 436 states have call successors, (436), 99 states have call predecessors, (436), 116 states have return successors, (482), 412 states have call predecessors, (482), 431 states have call successors, (482) [2022-07-13 17:21:15,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 4234 transitions. [2022-07-13 17:21:15,897 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 4234 transitions. Word has length 148 [2022-07-13 17:21:15,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:15,897 INFO L495 AbstractCegarLoop]: Abstraction has 2596 states and 4234 transitions. [2022-07-13 17:21:15,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:21:15,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 4234 transitions. [2022-07-13 17:21:15,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-13 17:21:15,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:15,902 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:15,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:16,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:16,114 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:16,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:16,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1251734787, now seen corresponding path program 1 times [2022-07-13 17:21:16,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:16,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185760231] [2022-07-13 17:21:16,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:16,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:21:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:21:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 17:21:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:21:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:21:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,513 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 17:21:16,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:16,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185760231] [2022-07-13 17:21:16,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185760231] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:16,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342139767] [2022-07-13 17:21:16,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:16,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:16,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:16,515 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:16,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-13 17:21:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 2141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 17:21:16,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:16,790 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 17:21:16,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:16,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342139767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:16,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:16,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-07-13 17:21:16,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371173672] [2022-07-13 17:21:16,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:16,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:21:16,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:16,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:21:16,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:16,792 INFO L87 Difference]: Start difference. First operand 2596 states and 4234 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:21:16,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:16,877 INFO L93 Difference]: Finished difference Result 5166 states and 8438 transitions. [2022-07-13 17:21:16,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:21:16,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 159 [2022-07-13 17:21:16,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:16,886 INFO L225 Difference]: With dead ends: 5166 [2022-07-13 17:21:16,886 INFO L226 Difference]: Without dead ends: 2565 [2022-07-13 17:21:16,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:21:16,894 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 11 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:16,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2757 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:21:16,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2022-07-13 17:21:16,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 2565. [2022-07-13 17:21:16,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 2015 states have (on average 1.6228287841191067) internal successors, (3270), 2065 states have internal predecessors, (3270), 435 states have call successors, (435), 99 states have call predecessors, (435), 114 states have return successors, (479), 411 states have call predecessors, (479), 430 states have call successors, (479) [2022-07-13 17:21:16,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 4184 transitions. [2022-07-13 17:21:16,994 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 4184 transitions. Word has length 159 [2022-07-13 17:21:16,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:16,994 INFO L495 AbstractCegarLoop]: Abstraction has 2565 states and 4184 transitions. [2022-07-13 17:21:16,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:21:16,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 4184 transitions. [2022-07-13 17:21:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-13 17:21:16,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:16,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:17,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:17,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:17,211 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:17,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:17,212 INFO L85 PathProgramCache]: Analyzing trace with hash 74137928, now seen corresponding path program 1 times [2022-07-13 17:21:17,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:17,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463200565] [2022-07-13 17:21:17,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:17,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:21:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:21:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:21:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 17:21:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:21:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:21:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 17:21:17,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:17,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463200565] [2022-07-13 17:21:17,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463200565] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:17,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183515322] [2022-07-13 17:21:17,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:17,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:17,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:17,635 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:17,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-13 17:21:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:17,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 2144 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 17:21:17,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:21:17,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:17,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183515322] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:17,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:17,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 13 [2022-07-13 17:21:17,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471490178] [2022-07-13 17:21:17,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:17,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:21:17,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:17,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:21:17,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:17,930 INFO L87 Difference]: Start difference. First operand 2565 states and 4184 transitions. Second operand has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-13 17:21:18,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:18,050 INFO L93 Difference]: Finished difference Result 5099 states and 8332 transitions. [2022-07-13 17:21:18,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:21:18,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 161 [2022-07-13 17:21:18,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:18,058 INFO L225 Difference]: With dead ends: 5099 [2022-07-13 17:21:18,059 INFO L226 Difference]: Without dead ends: 2565 [2022-07-13 17:21:18,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:21:18,069 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 143 mSDsluCounter, 4525 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5465 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:18,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5465 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:21:18,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2022-07-13 17:21:18,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 2544. [2022-07-13 17:21:18,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2544 states, 1994 states have (on average 1.6228686058174524) internal successors, (3236), 2044 states have internal predecessors, (3236), 435 states have call successors, (435), 99 states have call predecessors, (435), 114 states have return successors, (479), 411 states have call predecessors, (479), 430 states have call successors, (479) [2022-07-13 17:21:18,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2544 states to 2544 states and 4150 transitions. [2022-07-13 17:21:18,135 INFO L78 Accepts]: Start accepts. Automaton has 2544 states and 4150 transitions. Word has length 161 [2022-07-13 17:21:18,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:18,135 INFO L495 AbstractCegarLoop]: Abstraction has 2544 states and 4150 transitions. [2022-07-13 17:21:18,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-13 17:21:18,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2544 states and 4150 transitions. [2022-07-13 17:21:18,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 17:21:18,138 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:18,138 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:18,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:18,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-13 17:21:18,360 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:18,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:18,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1517152867, now seen corresponding path program 1 times [2022-07-13 17:21:18,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:18,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226034956] [2022-07-13 17:21:18,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:18,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 17:21:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:21:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:21:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 17:21:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:21:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:21:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 17:21:18,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:18,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226034956] [2022-07-13 17:21:18,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226034956] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:18,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697729543] [2022-07-13 17:21:18,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:18,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:18,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:18,848 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:18,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-13 17:21:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 2150 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:21:19,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:21:19,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:19,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697729543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:19,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:19,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-07-13 17:21:19,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116998230] [2022-07-13 17:21:19,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:19,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:21:19,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:19,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:21:19,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:21:19,166 INFO L87 Difference]: Start difference. First operand 2544 states and 4150 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:21:19,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:19,276 INFO L93 Difference]: Finished difference Result 5057 states and 8266 transitions. [2022-07-13 17:21:19,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:21:19,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2022-07-13 17:21:19,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:19,285 INFO L225 Difference]: With dead ends: 5057 [2022-07-13 17:21:19,285 INFO L226 Difference]: Without dead ends: 2544 [2022-07-13 17:21:19,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:21:19,291 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 176 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:19,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2590 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:21:19,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2022-07-13 17:21:19,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2544. [2022-07-13 17:21:19,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2544 states, 1994 states have (on average 1.6223671013039118) internal successors, (3235), 2044 states have internal predecessors, (3235), 435 states have call successors, (435), 99 states have call predecessors, (435), 114 states have return successors, (479), 411 states have call predecessors, (479), 430 states have call successors, (479) [2022-07-13 17:21:19,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2544 states to 2544 states and 4149 transitions. [2022-07-13 17:21:19,361 INFO L78 Accepts]: Start accepts. Automaton has 2544 states and 4149 transitions. Word has length 163 [2022-07-13 17:21:19,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:19,361 INFO L495 AbstractCegarLoop]: Abstraction has 2544 states and 4149 transitions. [2022-07-13 17:21:19,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:21:19,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2544 states and 4149 transitions. [2022-07-13 17:21:19,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-13 17:21:19,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:19,365 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:19,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:19,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-13 17:21:19,583 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:19,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:19,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1554375247, now seen corresponding path program 1 times [2022-07-13 17:21:19,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:19,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137111396] [2022-07-13 17:21:19,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:19,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:21:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:21:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:21:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 17:21:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:21:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:21:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 17:21:19,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:19,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137111396] [2022-07-13 17:21:19,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137111396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:19,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:21:19,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 17:21:19,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858096966] [2022-07-13 17:21:19,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:19,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:21:19,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:19,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:21:19,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:21:19,985 INFO L87 Difference]: Start difference. First operand 2544 states and 4149 transitions. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:21:24,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:24,786 INFO L93 Difference]: Finished difference Result 5961 states and 9855 transitions. [2022-07-13 17:21:24,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 17:21:24,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 164 [2022-07-13 17:21:24,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:24,799 INFO L225 Difference]: With dead ends: 5961 [2022-07-13 17:21:24,799 INFO L226 Difference]: Without dead ends: 3419 [2022-07-13 17:21:24,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:24,805 INFO L413 NwaCegarLoop]: 974 mSDtfsCounter, 1930 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 3186 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 3787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 3186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:24,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2012 Valid, 2092 Invalid, 3787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [601 Valid, 3186 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-13 17:21:24,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3419 states. [2022-07-13 17:21:24,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3419 to 2504. [2022-07-13 17:21:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2504 states, 1957 states have (on average 1.6208482370975983) internal successors, (3172), 2005 states have internal predecessors, (3172), 434 states have call successors, (434), 99 states have call predecessors, (434), 112 states have return successors, (476), 410 states have call predecessors, (476), 429 states have call successors, (476) [2022-07-13 17:21:24,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2504 states to 2504 states and 4082 transitions. [2022-07-13 17:21:24,990 INFO L78 Accepts]: Start accepts. Automaton has 2504 states and 4082 transitions. Word has length 164 [2022-07-13 17:21:24,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:24,991 INFO L495 AbstractCegarLoop]: Abstraction has 2504 states and 4082 transitions. [2022-07-13 17:21:24,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:21:24,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2504 states and 4082 transitions. [2022-07-13 17:21:25,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-13 17:21:25,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:25,007 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:25,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 17:21:25,007 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:25,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:25,008 INFO L85 PathProgramCache]: Analyzing trace with hash 497453547, now seen corresponding path program 1 times [2022-07-13 17:21:25,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:25,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212970764] [2022-07-13 17:21:25,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:25,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:21:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:21:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:21:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 17:21:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:21:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:21:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 17:21:25,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:25,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212970764] [2022-07-13 17:21:25,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212970764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:25,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:21:25,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 17:21:25,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769757000] [2022-07-13 17:21:25,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:25,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 17:21:25,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:25,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 17:21:25,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:21:25,554 INFO L87 Difference]: Start difference. First operand 2504 states and 4082 transitions. Second operand has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 8 states have internal predecessors, (120), 2 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:21:33,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:33,779 INFO L93 Difference]: Finished difference Result 5895 states and 9788 transitions. [2022-07-13 17:21:33,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 17:21:33,779 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 8 states have internal predecessors, (120), 2 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) Word has length 165 [2022-07-13 17:21:33,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:33,790 INFO L225 Difference]: With dead ends: 5895 [2022-07-13 17:21:33,790 INFO L226 Difference]: Without dead ends: 3492 [2022-07-13 17:21:33,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2022-07-13 17:21:33,796 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 1100 mSDsluCounter, 3217 mSDsCounter, 0 mSdLazyCounter, 9858 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 4194 SdHoareTripleChecker+Invalid, 10211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 9858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:33,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 4194 Invalid, 10211 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [353 Valid, 9858 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-07-13 17:21:33,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2022-07-13 17:21:33,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 2543. [2022-07-13 17:21:34,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2543 states, 1986 states have (on average 1.6112789526686808) internal successors, (3200), 2032 states have internal predecessors, (3200), 434 states have call successors, (434), 99 states have call predecessors, (434), 122 states have return successors, (505), 422 states have call predecessors, (505), 429 states have call successors, (505) [2022-07-13 17:21:34,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 4139 transitions. [2022-07-13 17:21:34,008 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 4139 transitions. Word has length 165 [2022-07-13 17:21:34,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:34,009 INFO L495 AbstractCegarLoop]: Abstraction has 2543 states and 4139 transitions. [2022-07-13 17:21:34,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 8 states have internal predecessors, (120), 2 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:21:34,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 4139 transitions. [2022-07-13 17:21:34,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 17:21:34,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:34,012 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:34,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 17:21:34,012 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:34,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:34,013 INFO L85 PathProgramCache]: Analyzing trace with hash 803057900, now seen corresponding path program 1 times [2022-07-13 17:21:34,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:34,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265977569] [2022-07-13 17:21:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:34,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:21:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:21:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 17:21:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 17:21:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 17:21:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:21:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:21:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,486 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:21:34,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:34,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265977569] [2022-07-13 17:21:34,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265977569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:34,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:21:34,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 17:21:34,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842559683] [2022-07-13 17:21:34,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:34,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 17:21:34,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:34,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 17:21:34,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:34,489 INFO L87 Difference]: Start difference. First operand 2543 states and 4139 transitions. Second operand has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 7 states have internal predecessors, (123), 2 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:21:41,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:41,291 INFO L93 Difference]: Finished difference Result 5981 states and 9915 transitions. [2022-07-13 17:21:41,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 17:21:41,291 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 7 states have internal predecessors, (123), 2 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2022-07-13 17:21:41,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:41,300 INFO L225 Difference]: With dead ends: 5981 [2022-07-13 17:21:41,300 INFO L226 Difference]: Without dead ends: 3481 [2022-07-13 17:21:41,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2022-07-13 17:21:41,305 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 1508 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 8049 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 3730 SdHoareTripleChecker+Invalid, 8525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 8049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:41,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1590 Valid, 3730 Invalid, 8525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 8049 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-13 17:21:41,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3481 states. [2022-07-13 17:21:41,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3481 to 2536. [2022-07-13 17:21:41,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2536 states, 1979 states have (on average 1.6124305204648812) internal successors, (3191), 2020 states have internal predecessors, (3191), 434 states have call successors, (434), 99 states have call predecessors, (434), 122 states have return successors, (505), 427 states have call predecessors, (505), 429 states have call successors, (505) [2022-07-13 17:21:41,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 4130 transitions. [2022-07-13 17:21:41,510 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 4130 transitions. Word has length 167 [2022-07-13 17:21:41,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:41,510 INFO L495 AbstractCegarLoop]: Abstraction has 2536 states and 4130 transitions. [2022-07-13 17:21:41,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 7 states have internal predecessors, (123), 2 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:21:41,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 4130 transitions. [2022-07-13 17:21:41,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 17:21:41,513 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:41,514 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:41,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 17:21:41,514 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:41,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:41,514 INFO L85 PathProgramCache]: Analyzing trace with hash 667263498, now seen corresponding path program 1 times [2022-07-13 17:21:41,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:41,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935366110] [2022-07-13 17:21:41,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:41,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:21:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:21:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 17:21:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 17:21:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 17:21:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:21:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:21:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:41,978 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 17:21:41,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:41,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935366110] [2022-07-13 17:21:41,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935366110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:41,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:21:41,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 17:21:41,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198678869] [2022-07-13 17:21:41,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:41,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 17:21:41,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:41,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 17:21:41,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:21:41,981 INFO L87 Difference]: Start difference. First operand 2536 states and 4130 transitions. Second operand has 14 states, 14 states have (on average 8.714285714285714) internal successors, (122), 9 states have internal predecessors, (122), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-13 17:21:52,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:52,027 INFO L93 Difference]: Finished difference Result 6067 states and 10051 transitions. [2022-07-13 17:21:52,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-13 17:21:52,027 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.714285714285714) internal successors, (122), 9 states have internal predecessors, (122), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 167 [2022-07-13 17:21:52,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:52,037 INFO L225 Difference]: With dead ends: 6067 [2022-07-13 17:21:52,037 INFO L226 Difference]: Without dead ends: 3568 [2022-07-13 17:21:52,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=343, Invalid=1463, Unknown=0, NotChecked=0, Total=1806 [2022-07-13 17:21:52,043 INFO L413 NwaCegarLoop]: 1126 mSDtfsCounter, 3683 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 10452 mSolverCounterSat, 1319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3728 SdHoareTripleChecker+Valid, 4519 SdHoareTripleChecker+Invalid, 11771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1319 IncrementalHoareTripleChecker+Valid, 10452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:52,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3728 Valid, 4519 Invalid, 11771 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1319 Valid, 10452 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-07-13 17:21:52,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2022-07-13 17:21:52,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 2566. [2022-07-13 17:21:52,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 2006 states have (on average 1.5977068793619142) internal successors, (3205), 2038 states have internal predecessors, (3205), 433 states have call successors, (433), 102 states have call predecessors, (433), 126 states have return successors, (510), 436 states have call predecessors, (510), 428 states have call successors, (510) [2022-07-13 17:21:52,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 4148 transitions. [2022-07-13 17:21:52,276 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 4148 transitions. Word has length 167 [2022-07-13 17:21:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:52,277 INFO L495 AbstractCegarLoop]: Abstraction has 2566 states and 4148 transitions. [2022-07-13 17:21:52,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.714285714285714) internal successors, (122), 9 states have internal predecessors, (122), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-13 17:21:52,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 4148 transitions. [2022-07-13 17:21:52,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-13 17:21:52,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:52,280 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:52,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 17:21:52,280 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:52,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:52,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1623881220, now seen corresponding path program 1 times [2022-07-13 17:21:52,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:52,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363441922] [2022-07-13 17:21:52,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:52,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:21:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:21:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:21:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 17:21:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:21:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:21:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-13 17:21:52,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:52,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363441922] [2022-07-13 17:21:52,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363441922] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:52,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128619828] [2022-07-13 17:21:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:52,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:52,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:52,788 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:52,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-13 17:21:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:53,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 2158 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 17:21:53,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:21:53,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:53,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128619828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:53,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:53,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 14 [2022-07-13 17:21:53,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807164011] [2022-07-13 17:21:53,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:53,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:21:53,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:53,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:21:53,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:21:53,097 INFO L87 Difference]: Start difference. First operand 2566 states and 4148 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:21:53,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:53,551 INFO L93 Difference]: Finished difference Result 7224 states and 12054 transitions. [2022-07-13 17:21:53,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:21:53,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 171 [2022-07-13 17:21:53,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:53,570 INFO L225 Difference]: With dead ends: 7224 [2022-07-13 17:21:53,570 INFO L226 Difference]: Without dead ends: 4769 [2022-07-13 17:21:53,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:21:53,581 INFO L413 NwaCegarLoop]: 1073 mSDtfsCounter, 848 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:53,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1803 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:21:53,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4769 states. [2022-07-13 17:21:53,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4769 to 4754. [2022-07-13 17:21:53,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4754 states, 3697 states have (on average 1.5650527454692995) internal successors, (5786), 3757 states have internal predecessors, (5786), 811 states have call successors, (811), 196 states have call predecessors, (811), 245 states have return successors, (1137), 822 states have call predecessors, (1137), 806 states have call successors, (1137) [2022-07-13 17:21:54,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4754 states to 4754 states and 7734 transitions. [2022-07-13 17:21:54,001 INFO L78 Accepts]: Start accepts. Automaton has 4754 states and 7734 transitions. Word has length 171 [2022-07-13 17:21:54,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:54,002 INFO L495 AbstractCegarLoop]: Abstraction has 4754 states and 7734 transitions. [2022-07-13 17:21:54,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:21:54,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4754 states and 7734 transitions. [2022-07-13 17:21:54,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-13 17:21:54,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:54,005 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:21:54,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:54,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:54,224 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:54,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:54,224 INFO L85 PathProgramCache]: Analyzing trace with hash -2049935005, now seen corresponding path program 1 times [2022-07-13 17:21:54,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:54,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303517188] [2022-07-13 17:21:54,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:54,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:21:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:21:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 17:21:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:21:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:21:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:54,759 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 17:21:54,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:54,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303517188] [2022-07-13 17:21:54,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303517188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:54,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:21:54,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 17:21:54,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473949161] [2022-07-13 17:21:54,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:54,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 17:21:54,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:54,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 17:21:54,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:54,760 INFO L87 Difference]: Start difference. First operand 4754 states and 7734 transitions. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 7 states have internal predecessors, (121), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-13 17:22:08,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:22:08,184 INFO L93 Difference]: Finished difference Result 15736 states and 26916 transitions. [2022-07-13 17:22:08,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-13 17:22:08,185 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 7 states have internal predecessors, (121), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) Word has length 172 [2022-07-13 17:22:08,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:22:08,234 INFO L225 Difference]: With dead ends: 15736 [2022-07-13 17:22:08,234 INFO L226 Difference]: Without dead ends: 11093 [2022-07-13 17:22:08,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=310, Invalid=1172, Unknown=0, NotChecked=0, Total=1482 [2022-07-13 17:22:08,255 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 2674 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 10340 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2751 SdHoareTripleChecker+Valid, 3640 SdHoareTripleChecker+Invalid, 11398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 10340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:22:08,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2751 Valid, 3640 Invalid, 11398 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1058 Valid, 10340 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-07-13 17:22:08,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11093 states. [2022-07-13 17:22:09,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11093 to 8512. [2022-07-13 17:22:09,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8512 states, 6661 states have (on average 1.5716859330430866) internal successors, (10469), 6730 states have internal predecessors, (10469), 1413 states have call successors, (1413), 343 states have call predecessors, (1413), 437 states have return successors, (2015), 1482 states have call predecessors, (2015), 1408 states have call successors, (2015) [2022-07-13 17:22:09,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8512 states to 8512 states and 13897 transitions. [2022-07-13 17:22:09,188 INFO L78 Accepts]: Start accepts. Automaton has 8512 states and 13897 transitions. Word has length 172 [2022-07-13 17:22:09,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:22:09,188 INFO L495 AbstractCegarLoop]: Abstraction has 8512 states and 13897 transitions. [2022-07-13 17:22:09,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 7 states have internal predecessors, (121), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-13 17:22:09,189 INFO L276 IsEmpty]: Start isEmpty. Operand 8512 states and 13897 transitions. [2022-07-13 17:22:09,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-13 17:22:09,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:22:09,192 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:22:09,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 17:22:09,192 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:22:09,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:22:09,192 INFO L85 PathProgramCache]: Analyzing trace with hash 869155723, now seen corresponding path program 1 times [2022-07-13 17:22:09,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:22:09,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960369167] [2022-07-13 17:22:09,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:22:09,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:22:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:22:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:22:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:22:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:22:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:22:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:22:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:22:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:22:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:22:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 17:22:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:22:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:22:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:22:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 17:22:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:22:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-13 17:22:09,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:22:09,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960369167] [2022-07-13 17:22:09,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960369167] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:22:09,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287306236] [2022-07-13 17:22:09,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:22:09,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:22:09,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:22:09,636 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:22:09,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-13 17:22:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:09,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 2177 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 17:22:09,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:22:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:22:09,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:22:09,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287306236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:22:09,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:22:09,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 14 [2022-07-13 17:22:09,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581201632] [2022-07-13 17:22:09,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:22:09,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:22:09,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:22:09,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:22:09,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:22:09,906 INFO L87 Difference]: Start difference. First operand 8512 states and 13897 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 17:22:11,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:22:11,109 INFO L93 Difference]: Finished difference Result 19766 states and 33277 transitions. [2022-07-13 17:22:11,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:22:11,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 177 [2022-07-13 17:22:11,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:22:11,154 INFO L225 Difference]: With dead ends: 19766 [2022-07-13 17:22:11,154 INFO L226 Difference]: Without dead ends: 12133 [2022-07-13 17:22:11,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:22:11,179 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 908 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:22:11,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 1643 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:22:11,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12133 states. [2022-07-13 17:22:12,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12133 to 12118. [2022-07-13 17:22:12,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12118 states, 9472 states have (on average 1.5456081081081081) internal successors, (14640), 9553 states have internal predecessors, (14640), 1987 states have call successors, (1987), 533 states have call predecessors, (1987), 658 states have return successors, (3400), 2086 states have call predecessors, (3400), 1982 states have call successors, (3400) [2022-07-13 17:22:12,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12118 states to 12118 states and 20027 transitions. [2022-07-13 17:22:12,379 INFO L78 Accepts]: Start accepts. Automaton has 12118 states and 20027 transitions. Word has length 177 [2022-07-13 17:22:12,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:22:12,379 INFO L495 AbstractCegarLoop]: Abstraction has 12118 states and 20027 transitions. [2022-07-13 17:22:12,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 17:22:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 12118 states and 20027 transitions. [2022-07-13 17:22:12,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-13 17:22:12,383 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:22:12,383 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:22:12,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-07-13 17:22:12,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:22:12,584 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:22:12,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:22:12,585 INFO L85 PathProgramCache]: Analyzing trace with hash 268592827, now seen corresponding path program 1 times [2022-07-13 17:22:12,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:22:12,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138816591] [2022-07-13 17:22:12,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:22:12,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:22:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:12,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:22:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:12,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:12,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:22:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:12,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:22:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:12,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:12,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:22:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:12,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:22:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:12,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:12,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:12,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:22:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:12,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:22:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:13,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:22:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:13,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:22:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:13,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 17:22:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:22:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:13,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:22:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:13,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:22:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:13,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:22:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:13,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:22:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:13,086 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 17:22:13,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:22:13,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138816591] [2022-07-13 17:22:13,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138816591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:22:13,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:22:13,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-13 17:22:13,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222118997] [2022-07-13 17:22:13,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:22:13,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 17:22:13,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:22:13,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 17:22:13,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:22:13,088 INFO L87 Difference]: Start difference. First operand 12118 states and 20027 transitions. Second operand has 15 states, 15 states have (on average 8.466666666666667) internal successors, (127), 11 states have internal predecessors, (127), 6 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-07-13 17:22:39,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:22:39,787 INFO L93 Difference]: Finished difference Result 40326 states and 74012 transitions. [2022-07-13 17:22:39,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-07-13 17:22:39,788 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.466666666666667) internal successors, (127), 11 states have internal predecessors, (127), 6 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 180 [2022-07-13 17:22:39,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:22:39,997 INFO L225 Difference]: With dead ends: 40326 [2022-07-13 17:22:39,998 INFO L226 Difference]: Without dead ends: 28323 [2022-07-13 17:22:40,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2058 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1041, Invalid=4811, Unknown=0, NotChecked=0, Total=5852 [2022-07-13 17:22:40,057 INFO L413 NwaCegarLoop]: 1047 mSDtfsCounter, 10431 mSDsluCounter, 3579 mSDsCounter, 0 mSdLazyCounter, 16824 mSolverCounterSat, 3866 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10499 SdHoareTripleChecker+Valid, 4626 SdHoareTripleChecker+Invalid, 20690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3866 IncrementalHoareTripleChecker+Valid, 16824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:22:40,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10499 Valid, 4626 Invalid, 20690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3866 Valid, 16824 Invalid, 0 Unknown, 0 Unchecked, 16.9s Time] [2022-07-13 17:22:40,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28323 states. [2022-07-13 17:22:42,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28323 to 22418. [2022-07-13 17:22:42,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22418 states, 17531 states have (on average 1.516627688095374) internal successors, (26588), 17697 states have internal predecessors, (26588), 3537 states have call successors, (3537), 1074 states have call predecessors, (3537), 1349 states have return successors, (7620), 3756 states have call predecessors, (7620), 3532 states have call successors, (7620) [2022-07-13 17:22:42,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22418 states to 22418 states and 37745 transitions. [2022-07-13 17:22:42,530 INFO L78 Accepts]: Start accepts. Automaton has 22418 states and 37745 transitions. Word has length 180 [2022-07-13 17:22:42,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:22:42,531 INFO L495 AbstractCegarLoop]: Abstraction has 22418 states and 37745 transitions. [2022-07-13 17:22:42,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.466666666666667) internal successors, (127), 11 states have internal predecessors, (127), 6 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-07-13 17:22:42,531 INFO L276 IsEmpty]: Start isEmpty. Operand 22418 states and 37745 transitions. [2022-07-13 17:22:42,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-13 17:22:42,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:22:42,535 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:22:42,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 17:22:42,535 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:22:42,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:22:42,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1014297068, now seen corresponding path program 1 times [2022-07-13 17:22:42,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:22:42,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180144448] [2022-07-13 17:22:42,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:22:42,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:22:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:42,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:22:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:42,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:42,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:22:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:42,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:22:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:42,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:42,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:22:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:42,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:22:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:42,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:42,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:42,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:22:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:42,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:22:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:42,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:22:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:43,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:22:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:43,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 17:22:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:43,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:22:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:43,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:22:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:43,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:22:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:43,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:22:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:43,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:22:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:43,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:22:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 17:22:43,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:22:43,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180144448] [2022-07-13 17:22:43,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180144448] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:22:43,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685230130] [2022-07-13 17:22:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:22:43,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:22:43,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:22:43,125 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:22:43,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-13 17:22:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:43,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 2199 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 17:22:43,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:22:43,513 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:22:43,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:22:43,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685230130] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:22:43,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:22:43,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [22] total 26 [2022-07-13 17:22:43,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321744700] [2022-07-13 17:22:43,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:22:43,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:22:43,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:22:43,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:22:43,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=594, Unknown=0, NotChecked=0, Total=650 [2022-07-13 17:22:43,516 INFO L87 Difference]: Start difference. First operand 22418 states and 37745 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-13 17:22:46,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:22:46,570 INFO L93 Difference]: Finished difference Result 49646 states and 85026 transitions. [2022-07-13 17:22:46,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:22:46,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 185 [2022-07-13 17:22:46,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:22:46,686 INFO L225 Difference]: With dead ends: 49646 [2022-07-13 17:22:46,686 INFO L226 Difference]: Without dead ends: 28004 [2022-07-13 17:22:46,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2022-07-13 17:22:46,766 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 384 mSDsluCounter, 3481 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 4418 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:22:46,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 4418 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:22:46,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28004 states. [2022-07-13 17:22:49,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28004 to 28004. [2022-07-13 17:22:49,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28004 states, 22319 states have (on average 1.5275774004211657) internal successors, (34094), 22584 states have internal predecessors, (34094), 4104 states have call successors, (4104), 1206 states have call predecessors, (4104), 1580 states have return successors, (8187), 4323 states have call predecessors, (8187), 4099 states have call successors, (8187) [2022-07-13 17:22:49,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28004 states to 28004 states and 46385 transitions. [2022-07-13 17:22:49,632 INFO L78 Accepts]: Start accepts. Automaton has 28004 states and 46385 transitions. Word has length 185 [2022-07-13 17:22:49,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:22:49,633 INFO L495 AbstractCegarLoop]: Abstraction has 28004 states and 46385 transitions. [2022-07-13 17:22:49,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-13 17:22:49,633 INFO L276 IsEmpty]: Start isEmpty. Operand 28004 states and 46385 transitions. [2022-07-13 17:22:49,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-13 17:22:49,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:22:49,637 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:22:49,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-07-13 17:22:49,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:22:49,844 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:22:49,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:22:49,845 INFO L85 PathProgramCache]: Analyzing trace with hash -704665013, now seen corresponding path program 1 times [2022-07-13 17:22:49,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:22:49,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478149197] [2022-07-13 17:22:49,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:22:49,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:22:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:49,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:22:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:49,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:49,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:22:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:49,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:22:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:49,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:49,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:22:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:50,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:22:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:50,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:50,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:50,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:22:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:50,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:22:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:50,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:22:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:50,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:22:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:50,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:22:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:50,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:22:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:50,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 17:22:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:50,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:22:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:50,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:22:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:50,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:22:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:50,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:22:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:50,561 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:22:50,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:22:50,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478149197] [2022-07-13 17:22:50,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478149197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:22:50,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:22:50,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 17:22:50,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223931179] [2022-07-13 17:22:50,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:22:50,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 17:22:50,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:22:50,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 17:22:50,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2022-07-13 17:22:50,562 INFO L87 Difference]: Start difference. First operand 28004 states and 46385 transitions. Second operand has 26 states, 24 states have (on average 5.375) internal successors, (129), 18 states have internal predecessors, (129), 9 states have call successors, (21), 6 states have call predecessors, (21), 9 states have return successors, (20), 10 states have call predecessors, (20), 8 states have call successors, (20)