./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec1_product30.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 b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 05:40:57,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 05:40:57,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 05:40:57,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 05:40:57,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 05:40:57,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 05:40:57,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 05:40:57,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 05:40:57,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 05:40:57,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 05:40:57,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 05:40:57,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 05:40:57,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 05:40:57,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 05:40:57,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 05:40:57,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 05:40:57,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 05:40:57,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 05:40:57,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 05:40:57,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 05:40:57,728 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 05:40:57,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 05:40:57,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 05:40:57,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 05:40:57,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 05:40:57,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 05:40:57,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 05:40:57,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 05:40:57,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 05:40:57,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 05:40:57,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 05:40:57,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 05:40:57,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 05:40:57,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 05:40:57,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 05:40:57,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 05:40:57,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 05:40:57,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 05:40:57,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 05:40:57,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 05:40:57,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 05:40:57,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 05:40:57,748 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 05:40:57,769 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 05:40:57,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 05:40:57,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 05:40:57,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 05:40:57,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 05:40:57,771 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 05:40:57,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 05:40:57,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 05:40:57,772 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 05:40:57,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 05:40:57,772 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 05:40:57,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 05:40:57,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 05:40:57,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 05:40:57,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 05:40:57,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 05:40:57,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 05:40:57,773 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 05:40:57,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 05:40:57,774 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 05:40:57,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 05:40:57,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 05:40:57,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 05:40:57,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 05:40:57,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 05:40:57,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 05:40:57,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 05:40:57,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 05:40:57,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 05:40:57,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 05:40:57,776 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 05:40:57,776 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 05:40:57,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 05:40:57,776 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c [2022-07-12 05:40:57,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 05:40:58,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 05:40:58,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 05:40:58,024 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 05:40:58,024 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 05:40:58,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2022-07-12 05:40:58,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f76b71bc/ff0d15538d63442cb0c2469ae83355b3/FLAGb54ce107e [2022-07-12 05:40:58,557 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 05:40:58,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2022-07-12 05:40:58,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f76b71bc/ff0d15538d63442cb0c2469ae83355b3/FLAGb54ce107e [2022-07-12 05:40:58,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f76b71bc/ff0d15538d63442cb0c2469ae83355b3 [2022-07-12 05:40:58,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 05:40:58,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 05:40:58,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 05:40:58,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 05:40:58,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 05:40:58,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:40:58" (1/1) ... [2022-07-12 05:40:58,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122ab68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:40:58, skipping insertion in model container [2022-07-12 05:40:58,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:40:58" (1/1) ... [2022-07-12 05:40:58,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 05:40:58,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 05:40:59,099 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_product30.cil.c[1545,1558] [2022-07-12 05:40:59,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 05:40:59,418 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 05:40:59,428 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_product30.cil.c[1545,1558] [2022-07-12 05:40:59,552 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 05:40:59,581 INFO L208 MainTranslator]: Completed translation [2022-07-12 05:40:59,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:40:59 WrapperNode [2022-07-12 05:40:59,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 05:40:59,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 05:40:59,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 05:40:59,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 05:40:59,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:40:59" (1/1) ... [2022-07-12 05:40:59,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:40:59" (1/1) ... [2022-07-12 05:40:59,658 INFO L137 Inliner]: procedures = 95, calls = 348, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 909 [2022-07-12 05:40:59,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 05:40:59,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 05:40:59,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 05:40:59,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 05:40:59,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:40:59" (1/1) ... [2022-07-12 05:40:59,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:40:59" (1/1) ... [2022-07-12 05:40:59,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:40:59" (1/1) ... [2022-07-12 05:40:59,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:40:59" (1/1) ... [2022-07-12 05:40:59,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:40:59" (1/1) ... [2022-07-12 05:40:59,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:40:59" (1/1) ... [2022-07-12 05:40:59,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:40:59" (1/1) ... [2022-07-12 05:40:59,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 05:40:59,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 05:40:59,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 05:40:59,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 05:40:59,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:40:59" (1/1) ... [2022-07-12 05:40:59,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 05:40:59,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:59,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 05:40:59,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 05:40:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-07-12 05:40:59,828 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-07-12 05:40:59,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 05:40:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-12 05:40:59,829 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-12 05:40:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-12 05:40:59,829 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-12 05:40:59,829 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-12 05:40:59,829 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-12 05:40:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-12 05:40:59,830 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-12 05:40:59,830 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-12 05:40:59,830 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-12 05:40:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-07-12 05:40:59,831 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-07-12 05:40:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-12 05:40:59,831 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-12 05:40:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-12 05:40:59,832 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-12 05:40:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-12 05:40:59,832 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-12 05:40:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-12 05:40:59,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-12 05:40:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-12 05:40:59,833 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-12 05:40:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-12 05:40:59,833 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-12 05:40:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-12 05:40:59,833 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-12 05:40:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-12 05:40:59,834 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-12 05:40:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-12 05:40:59,834 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-12 05:40:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-12 05:40:59,834 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-12 05:40:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-12 05:40:59,835 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-12 05:40:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-12 05:40:59,835 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-12 05:40:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-12 05:40:59,835 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-12 05:40:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 05:40:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-12 05:40:59,836 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-12 05:40:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-12 05:40:59,836 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-12 05:40:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-12 05:40:59,836 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-12 05:40:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-12 05:40:59,837 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-12 05:40:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-07-12 05:40:59,837 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-07-12 05:40:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 05:40:59,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 05:40:59,839 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-12 05:40:59,839 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-12 05:41:00,048 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 05:41:00,049 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 05:41:00,993 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 05:41:01,019 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 05:41:01,023 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 05:41:01,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:41:01 BoogieIcfgContainer [2022-07-12 05:41:01,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 05:41:01,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 05:41:01,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 05:41:01,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 05:41:01,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 05:40:58" (1/3) ... [2022-07-12 05:41:01,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3547c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:41:01, skipping insertion in model container [2022-07-12 05:41:01,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:40:59" (2/3) ... [2022-07-12 05:41:01,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3547c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:41:01, skipping insertion in model container [2022-07-12 05:41:01,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:41:01" (3/3) ... [2022-07-12 05:41:01,033 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product30.cil.c [2022-07-12 05:41:01,045 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 05:41:01,045 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 05:41:01,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 05:41:01,119 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@3de23dbc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@781be47 [2022-07-12 05:41:01,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 05:41:01,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 588 states, 459 states have (on average 1.6884531590413943) internal successors, (775), 482 states have internal predecessors, (775), 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) [2022-07-12 05:41:01,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-12 05:41:01,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:01,148 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] [2022-07-12 05:41:01,148 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:01,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:01,151 INFO L85 PathProgramCache]: Analyzing trace with hash 550728757, now seen corresponding path program 1 times [2022-07-12 05:41:01,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:01,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227709400] [2022-07-12 05:41:01,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:01,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:41:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 05:41:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:41:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:02,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 05:41:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:02,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:02,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:02,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:02,080 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:41:02,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:02,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227709400] [2022-07-12 05:41:02,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227709400] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:02,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005978682] [2022-07-12 05:41:02,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:02,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:02,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:02,084 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) [2022-07-12 05:41:02,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 05:41:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:02,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 05:41:02,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:02,540 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 05:41:02,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:02,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005978682] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:02,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:02,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2022-07-12 05:41:02,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275293968] [2022-07-12 05:41:02,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:02,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 05:41:02,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:02,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 05:41:02,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:41:02,580 INFO L87 Difference]: Start difference. First operand has 588 states, 459 states have (on average 1.6884531590413943) internal successors, (775), 482 states have internal predecessors, (775), 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) [2022-07-12 05:41:02,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:02,680 INFO L93 Difference]: Finished difference Result 609 states and 1007 transitions. [2022-07-12 05:41:02,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 05:41:02,682 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 [2022-07-12 05:41:02,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:02,699 INFO L225 Difference]: With dead ends: 609 [2022-07-12 05:41:02,699 INFO L226 Difference]: Without dead ends: 580 [2022-07-12 05:41:02,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:41:02,704 INFO L413 NwaCegarLoop]: 968 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, 968 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 [2022-07-12 05:41:02,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:41:02,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-07-12 05:41:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2022-07-12 05:41:02,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 453 states have (on average 1.6865342163355408) internal successors, (764), 474 states have internal predecessors, (764), 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) [2022-07-12 05:41:02,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 961 transitions. [2022-07-12 05:41:02,790 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 961 transitions. Word has length 83 [2022-07-12 05:41:02,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:02,792 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 961 transitions. [2022-07-12 05:41:02,792 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) [2022-07-12 05:41:02,792 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 961 transitions. [2022-07-12 05:41:02,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-12 05:41:02,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:02,797 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] [2022-07-12 05:41:02,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 05:41:03,011 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 [2022-07-12 05:41:03,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:03,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:03,012 INFO L85 PathProgramCache]: Analyzing trace with hash -473244636, now seen corresponding path program 1 times [2022-07-12 05:41:03,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:03,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837488896] [2022-07-12 05:41:03,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:03,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:03,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:03,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:41:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:03,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 05:41:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:03,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:03,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:41:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:03,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 05:41:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:03,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:03,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:03,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:41:03,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:03,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837488896] [2022-07-12 05:41:03,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837488896] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:03,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452553544] [2022-07-12 05:41:03,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:03,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:03,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:03,481 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) [2022-07-12 05:41:03,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 05:41:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:03,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:41:03,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:41:03,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:03,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452553544] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:03,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:03,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:41:03,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398482557] [2022-07-12 05:41:03,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:03,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:41:03,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:03,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:41:03,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:41:03,871 INFO L87 Difference]: Start difference. First operand 580 states and 961 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) [2022-07-12 05:41:03,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:03,978 INFO L93 Difference]: Finished difference Result 1151 states and 1914 transitions. [2022-07-12 05:41:03,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 05:41:03,978 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 [2022-07-12 05:41:03,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:03,986 INFO L225 Difference]: With dead ends: 1151 [2022-07-12 05:41:03,986 INFO L226 Difference]: Without dead ends: 580 [2022-07-12 05:41:03,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:41:03,995 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 14 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2834 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 [2022-07-12 05:41:03,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2834 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:41:03,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-07-12 05:41:04,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2022-07-12 05:41:04,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 453 states have (on average 1.684326710816777) internal successors, (763), 474 states have internal predecessors, (763), 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) [2022-07-12 05:41:04,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 960 transitions. [2022-07-12 05:41:04,036 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 960 transitions. Word has length 85 [2022-07-12 05:41:04,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:04,036 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 960 transitions. [2022-07-12 05:41:04,036 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) [2022-07-12 05:41:04,037 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 960 transitions. [2022-07-12 05:41:04,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-12 05:41:04,040 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:04,040 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] [2022-07-12 05:41:04,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:04,256 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 [2022-07-12 05:41:04,257 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:04,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:04,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1800576756, now seen corresponding path program 1 times [2022-07-12 05:41:04,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:04,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652690129] [2022-07-12 05:41:04,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:04,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:04,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:04,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:04,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:04,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 05:41:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:04,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:04,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:04,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 05:41:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:04,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:04,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:04,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:41:04,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:04,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652690129] [2022-07-12 05:41:04,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652690129] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:04,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725603612] [2022-07-12 05:41:04,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:04,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:04,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:04,685 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) [2022-07-12 05:41:04,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 05:41:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:04,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:41:04,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:05,015 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:41:05,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:05,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725603612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:05,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:05,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:41:05,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513879199] [2022-07-12 05:41:05,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:05,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:41:05,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:05,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:41:05,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:41:05,018 INFO L87 Difference]: Start difference. First operand 580 states and 960 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) [2022-07-12 05:41:05,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:05,094 INFO L93 Difference]: Finished difference Result 1151 states and 1912 transitions. [2022-07-12 05:41:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 05:41:05,095 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 [2022-07-12 05:41:05,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:05,100 INFO L225 Difference]: With dead ends: 1151 [2022-07-12 05:41:05,100 INFO L226 Difference]: Without dead ends: 580 [2022-07-12 05:41:05,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:41:05,106 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 12 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2834 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 [2022-07-12 05:41:05,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2834 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:41:05,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-07-12 05:41:05,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2022-07-12 05:41:05,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 453 states have (on average 1.6821192052980132) internal successors, (762), 474 states have internal predecessors, (762), 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) [2022-07-12 05:41:05,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 959 transitions. [2022-07-12 05:41:05,138 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 959 transitions. Word has length 87 [2022-07-12 05:41:05,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:05,138 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 959 transitions. [2022-07-12 05:41:05,138 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) [2022-07-12 05:41:05,139 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 959 transitions. [2022-07-12 05:41:05,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-12 05:41:05,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:05,141 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] [2022-07-12 05:41:05,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:05,363 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 [2022-07-12 05:41:05,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:05,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:05,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1020101156, now seen corresponding path program 1 times [2022-07-12 05:41:05,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:05,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956028610] [2022-07-12 05:41:05,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:05,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 05:41:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 05:41:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:41:05,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:05,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956028610] [2022-07-12 05:41:05,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956028610] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:05,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058093914] [2022-07-12 05:41:05,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:05,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:05,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:05,783 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) [2022-07-12 05:41:05,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 05:41:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:06,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:41:06,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:41:06,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:06,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058093914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:06,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:06,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:41:06,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450496330] [2022-07-12 05:41:06,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:06,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:41:06,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:06,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:41:06,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:41:06,141 INFO L87 Difference]: Start difference. First operand 580 states and 959 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) [2022-07-12 05:41:06,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:06,226 INFO L93 Difference]: Finished difference Result 1158 states and 1919 transitions. [2022-07-12 05:41:06,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:41:06,227 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 [2022-07-12 05:41:06,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:06,231 INFO L225 Difference]: With dead ends: 1158 [2022-07-12 05:41:06,231 INFO L226 Difference]: Without dead ends: 589 [2022-07-12 05:41:06,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:41:06,234 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 20 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:41:06,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2834 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:41:06,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-07-12 05:41:06,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2022-07-12 05:41:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 461 states have (on average 1.6789587852494576) internal successors, (774), 482 states have internal predecessors, (774), 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) [2022-07-12 05:41:06,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 971 transitions. [2022-07-12 05:41:06,279 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 971 transitions. Word has length 89 [2022-07-12 05:41:06,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:06,279 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 971 transitions. [2022-07-12 05:41:06,280 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) [2022-07-12 05:41:06,280 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 971 transitions. [2022-07-12 05:41:06,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 05:41:06,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:06,282 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] [2022-07-12 05:41:06,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:06,499 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 [2022-07-12 05:41:06,499 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:06,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:06,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1365390302, now seen corresponding path program 1 times [2022-07-12 05:41:06,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:06,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932036842] [2022-07-12 05:41:06,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:06,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:06,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:06,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:06,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 05:41:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:06,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:41:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:06,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:06,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:06,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 05:41:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:06,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:06,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:06,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:06,881 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:41:06,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:06,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932036842] [2022-07-12 05:41:06,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932036842] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:06,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541363113] [2022-07-12 05:41:06,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:06,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:06,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:06,883 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) [2022-07-12 05:41:06,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 05:41:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:07,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:41:07,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:41:07,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:07,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541363113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:07,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:07,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:41:07,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980186898] [2022-07-12 05:41:07,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:07,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:41:07,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:07,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:41:07,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:41:07,223 INFO L87 Difference]: Start difference. First operand 589 states and 971 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) [2022-07-12 05:41:07,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:07,305 INFO L93 Difference]: Finished difference Result 1160 states and 1920 transitions. [2022-07-12 05:41:07,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:41:07,306 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 [2022-07-12 05:41:07,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:07,309 INFO L225 Difference]: With dead ends: 1160 [2022-07-12 05:41:07,309 INFO L226 Difference]: Without dead ends: 589 [2022-07-12 05:41:07,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:41:07,312 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 18 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2834 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 [2022-07-12 05:41:07,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2834 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:41:07,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-07-12 05:41:07,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2022-07-12 05:41:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 461 states have (on average 1.6767895878524945) internal successors, (773), 482 states have internal predecessors, (773), 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) [2022-07-12 05:41:07,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 970 transitions. [2022-07-12 05:41:07,330 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 970 transitions. Word has length 90 [2022-07-12 05:41:07,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:07,331 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 970 transitions. [2022-07-12 05:41:07,331 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) [2022-07-12 05:41:07,331 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 970 transitions. [2022-07-12 05:41:07,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 05:41:07,332 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:07,332 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] [2022-07-12 05:41:07,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:07,555 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 [2022-07-12 05:41:07,555 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:07,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:07,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1167027432, now seen corresponding path program 1 times [2022-07-12 05:41:07,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:07,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974006966] [2022-07-12 05:41:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:07,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:07,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:07,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:07,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 05:41:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:07,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 05:41:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:07,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:07,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:07,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 05:41:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:07,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:07,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:07,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:41:07,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:07,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974006966] [2022-07-12 05:41:07,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974006966] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:07,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444134106] [2022-07-12 05:41:07,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:07,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:07,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:07,938 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) [2022-07-12 05:41:07,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 05:41:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:08,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:41:08,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:41:08,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:08,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444134106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:08,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:08,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:41:08,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535303978] [2022-07-12 05:41:08,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:08,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:41:08,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:08,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:41:08,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:41:08,255 INFO L87 Difference]: Start difference. First operand 589 states and 970 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) [2022-07-12 05:41:08,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:08,306 INFO L93 Difference]: Finished difference Result 1160 states and 1919 transitions. [2022-07-12 05:41:08,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:41:08,306 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 [2022-07-12 05:41:08,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:08,310 INFO L225 Difference]: With dead ends: 1160 [2022-07-12 05:41:08,310 INFO L226 Difference]: Without dead ends: 589 [2022-07-12 05:41:08,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:41:08,314 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 17 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2834 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 [2022-07-12 05:41:08,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2834 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:41:08,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-07-12 05:41:08,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2022-07-12 05:41:08,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 461 states have (on average 1.6746203904555315) internal successors, (772), 482 states have internal predecessors, (772), 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) [2022-07-12 05:41:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 969 transitions. [2022-07-12 05:41:08,332 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 969 transitions. Word has length 91 [2022-07-12 05:41:08,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:08,332 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 969 transitions. [2022-07-12 05:41:08,332 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) [2022-07-12 05:41:08,333 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 969 transitions. [2022-07-12 05:41:08,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 05:41:08,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:08,334 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] [2022-07-12 05:41:08,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:08,555 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 [2022-07-12 05:41:08,555 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:08,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:08,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1535807462, now seen corresponding path program 1 times [2022-07-12 05:41:08,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:08,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874396625] [2022-07-12 05:41:08,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:08,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:08,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:08,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:08,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:08,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 05:41:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:08,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:08,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:08,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 05:41:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:08,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:08,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:08,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 05:41:08,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:08,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874396625] [2022-07-12 05:41:08,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874396625] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:08,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258909325] [2022-07-12 05:41:08,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:08,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:08,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:08,923 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) [2022-07-12 05:41:08,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 05:41:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:09,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 05:41:09,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:09,262 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:41:09,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:09,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258909325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:09,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:09,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-12 05:41:09,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489137151] [2022-07-12 05:41:09,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:09,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:41:09,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:09,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:41:09,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-07-12 05:41:09,264 INFO L87 Difference]: Start difference. First operand 589 states and 969 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) [2022-07-12 05:41:09,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:09,359 INFO L93 Difference]: Finished difference Result 1179 states and 1949 transitions. [2022-07-12 05:41:09,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:41:09,360 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 [2022-07-12 05:41:09,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:09,363 INFO L225 Difference]: With dead ends: 1179 [2022-07-12 05:41:09,363 INFO L226 Difference]: Without dead ends: 612 [2022-07-12 05:41:09,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:41:09,367 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 148 mSDsluCounter, 4627 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 5575 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:41:09,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 5575 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:41:09,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-07-12 05:41:09,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 608. [2022-07-12 05:41:09,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 477 states have (on average 1.6729559748427674) internal successors, (798), 500 states have internal predecessors, (798), 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) [2022-07-12 05:41:09,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 1000 transitions. [2022-07-12 05:41:09,389 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 1000 transitions. Word has length 92 [2022-07-12 05:41:09,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:09,390 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 1000 transitions. [2022-07-12 05:41:09,390 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) [2022-07-12 05:41:09,390 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 1000 transitions. [2022-07-12 05:41:09,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 05:41:09,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:09,392 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] [2022-07-12 05:41:09,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:09,605 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 [2022-07-12 05:41:09,605 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:09,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:09,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1892107609, now seen corresponding path program 1 times [2022-07-12 05:41:09,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:09,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398885878] [2022-07-12 05:41:09,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:09,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:09,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:09,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:09,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 05:41:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:09,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:09,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:09,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 05:41:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:09,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:09,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:09,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 05:41:09,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:09,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398885878] [2022-07-12 05:41:09,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398885878] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:09,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571798586] [2022-07-12 05:41:09,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:09,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:09,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:09,950 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) [2022-07-12 05:41:09,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 05:41:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:10,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:41:10,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:41:10,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:10,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571798586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:10,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:10,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:41:10,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58248828] [2022-07-12 05:41:10,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:10,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:41:10,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:10,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:41:10,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:41:10,254 INFO L87 Difference]: Start difference. First operand 608 states and 1000 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) [2022-07-12 05:41:10,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:10,364 INFO L93 Difference]: Finished difference Result 1220 states and 2023 transitions. [2022-07-12 05:41:10,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 05:41:10,365 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 [2022-07-12 05:41:10,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:10,369 INFO L225 Difference]: With dead ends: 1220 [2022-07-12 05:41:10,370 INFO L226 Difference]: Without dead ends: 608 [2022-07-12 05:41:10,372 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 [2022-07-12 05:41:10,373 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 135 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2651 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 [2022-07-12 05:41:10,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2651 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:41:10,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-07-12 05:41:10,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2022-07-12 05:41:10,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 477 states have (on average 1.6624737945492662) internal successors, (793), 500 states have internal predecessors, (793), 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) [2022-07-12 05:41:10,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 995 transitions. [2022-07-12 05:41:10,391 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 995 transitions. Word has length 92 [2022-07-12 05:41:10,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:10,392 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 995 transitions. [2022-07-12 05:41:10,392 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) [2022-07-12 05:41:10,392 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 995 transitions. [2022-07-12 05:41:10,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-12 05:41:10,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:10,394 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] [2022-07-12 05:41:10,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:10,619 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 [2022-07-12 05:41:10,620 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:10,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash 976119685, now seen corresponding path program 1 times [2022-07-12 05:41:10,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:10,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870976235] [2022-07-12 05:41:10,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:10,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:10,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:10,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:10,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:10,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:41:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:10,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:10,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:10,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 05:41:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:10,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:10,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:10,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 05:41:10,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:10,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870976235] [2022-07-12 05:41:10,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870976235] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:10,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403046813] [2022-07-12 05:41:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:10,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:10,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:10,996 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) [2022-07-12 05:41:11,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 05:41:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:11,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:41:11,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:11,338 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:41:11,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:11,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403046813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:11,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:11,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:41:11,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331284861] [2022-07-12 05:41:11,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:11,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:41:11,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:11,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:41:11,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:41:11,340 INFO L87 Difference]: Start difference. First operand 608 states and 995 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) [2022-07-12 05:41:11,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:11,436 INFO L93 Difference]: Finished difference Result 1220 states and 2013 transitions. [2022-07-12 05:41:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 05:41:11,437 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 [2022-07-12 05:41:11,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:11,442 INFO L225 Difference]: With dead ends: 1220 [2022-07-12 05:41:11,442 INFO L226 Difference]: Without dead ends: 608 [2022-07-12 05:41:11,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:41:11,446 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 129 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2651 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 [2022-07-12 05:41:11,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2651 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:41:11,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-07-12 05:41:11,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2022-07-12 05:41:11,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 477 states have (on average 1.6519916142557651) internal successors, (788), 500 states have internal predecessors, (788), 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) [2022-07-12 05:41:11,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 990 transitions. [2022-07-12 05:41:11,470 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 990 transitions. Word has length 94 [2022-07-12 05:41:11,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:11,471 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 990 transitions. [2022-07-12 05:41:11,471 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) [2022-07-12 05:41:11,471 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 990 transitions. [2022-07-12 05:41:11,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-12 05:41:11,473 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:11,473 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] [2022-07-12 05:41:11,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:11,687 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 [2022-07-12 05:41:11,687 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:11,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:11,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1819243015, now seen corresponding path program 1 times [2022-07-12 05:41:11,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:11,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021469460] [2022-07-12 05:41:11,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:11,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:11,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:11,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:11,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:11,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 05:41:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:11,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:11,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:12,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:41:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:12,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:12,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:12,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:12,070 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 05:41:12,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:12,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021469460] [2022-07-12 05:41:12,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021469460] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:12,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675581278] [2022-07-12 05:41:12,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:12,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:12,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:12,072 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) [2022-07-12 05:41:12,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 05:41:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:12,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:41:12,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:41:12,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:12,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675581278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:12,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:12,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:41:12,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674835987] [2022-07-12 05:41:12,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:12,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:41:12,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:12,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:41:12,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:41:12,433 INFO L87 Difference]: Start difference. First operand 608 states and 990 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) [2022-07-12 05:41:12,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:12,557 INFO L93 Difference]: Finished difference Result 1256 states and 2061 transitions. [2022-07-12 05:41:12,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:41:12,557 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 [2022-07-12 05:41:12,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:12,561 INFO L225 Difference]: With dead ends: 1256 [2022-07-12 05:41:12,561 INFO L226 Difference]: Without dead ends: 674 [2022-07-12 05:41:12,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:41:12,564 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 179 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2661 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 [2022-07-12 05:41:12,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2661 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:41:12,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-07-12 05:41:12,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 659. [2022-07-12 05:41:12,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 527 states have (on average 1.6565464895635673) internal successors, (873), 550 states have internal predecessors, (873), 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) [2022-07-12 05:41:12,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1074 transitions. [2022-07-12 05:41:12,585 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1074 transitions. Word has length 96 [2022-07-12 05:41:12,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:12,585 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 1074 transitions. [2022-07-12 05:41:12,585 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) [2022-07-12 05:41:12,585 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1074 transitions. [2022-07-12 05:41:12,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-12 05:41:12,587 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:12,587 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] [2022-07-12 05:41:12,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:12,808 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 [2022-07-12 05:41:12,808 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:12,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:12,809 INFO L85 PathProgramCache]: Analyzing trace with hash -469229833, now seen corresponding path program 1 times [2022-07-12 05:41:12,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:12,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630332057] [2022-07-12 05:41:12,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:12,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:12,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:12,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:12,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:12,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:41:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:12,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:12,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:13,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 05:41:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:13,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:13,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:13,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:13,182 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 05:41:13,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:13,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630332057] [2022-07-12 05:41:13,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630332057] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:13,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973512562] [2022-07-12 05:41:13,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:13,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:13,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:13,185 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) [2022-07-12 05:41:13,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 05:41:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:13,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 05:41:13,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:41:13,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:13,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973512562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:13,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:13,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-07-12 05:41:13,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725813111] [2022-07-12 05:41:13,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:13,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:41:13,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:13,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:41:13,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:41:13,563 INFO L87 Difference]: Start difference. First operand 659 states and 1074 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) [2022-07-12 05:41:13,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:13,697 INFO L93 Difference]: Finished difference Result 1248 states and 2041 transitions. [2022-07-12 05:41:13,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:41:13,698 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 [2022-07-12 05:41:13,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:13,702 INFO L225 Difference]: With dead ends: 1248 [2022-07-12 05:41:13,702 INFO L226 Difference]: Without dead ends: 681 [2022-07-12 05:41:13,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:41:13,705 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 177 mSDsluCounter, 5461 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6389 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 [2022-07-12 05:41:13,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6389 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:41:13,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-07-12 05:41:13,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 659. [2022-07-12 05:41:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 527 states have (on average 1.6565464895635673) internal successors, (873), 550 states have internal predecessors, (873), 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) [2022-07-12 05:41:13,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1074 transitions. [2022-07-12 05:41:13,729 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1074 transitions. Word has length 97 [2022-07-12 05:41:13,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:13,729 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 1074 transitions. [2022-07-12 05:41:13,729 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) [2022-07-12 05:41:13,729 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1074 transitions. [2022-07-12 05:41:13,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-12 05:41:13,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:13,731 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] [2022-07-12 05:41:13,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:13,951 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 [2022-07-12 05:41:13,951 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:13,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:13,952 INFO L85 PathProgramCache]: Analyzing trace with hash 433736727, now seen corresponding path program 1 times [2022-07-12 05:41:13,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:13,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424041038] [2022-07-12 05:41:13,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:13,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:14,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:14,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:14,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:14,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:41:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:14,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:14,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:14,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 05:41:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:14,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:14,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:14,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 05:41:14,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:14,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424041038] [2022-07-12 05:41:14,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424041038] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:14,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866459905] [2022-07-12 05:41:14,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:14,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:14,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:14,296 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) [2022-07-12 05:41:14,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 05:41:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:14,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:41:14,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:14,609 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:41:14,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:14,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866459905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:14,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:14,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:41:14,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562793615] [2022-07-12 05:41:14,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:14,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:41:14,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:14,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:41:14,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:41:14,611 INFO L87 Difference]: Start difference. First operand 659 states and 1074 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) [2022-07-12 05:41:14,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:14,759 INFO L93 Difference]: Finished difference Result 1256 states and 2059 transitions. [2022-07-12 05:41:14,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:41:14,760 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 [2022-07-12 05:41:14,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:14,764 INFO L225 Difference]: With dead ends: 1256 [2022-07-12 05:41:14,764 INFO L226 Difference]: Without dead ends: 659 [2022-07-12 05:41:14,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:41:14,767 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 173 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2661 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 [2022-07-12 05:41:14,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2661 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:41:14,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-07-12 05:41:14,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2022-07-12 05:41:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 527 states have (on average 1.6470588235294117) internal successors, (868), 550 states have internal predecessors, (868), 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) [2022-07-12 05:41:14,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1069 transitions. [2022-07-12 05:41:14,786 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1069 transitions. Word has length 97 [2022-07-12 05:41:14,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:14,787 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 1069 transitions. [2022-07-12 05:41:14,787 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) [2022-07-12 05:41:14,787 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1069 transitions. [2022-07-12 05:41:14,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-12 05:41:14,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:14,790 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] [2022-07-12 05:41:14,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:15,014 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 [2022-07-12 05:41:15,014 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:15,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:15,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1040481066, now seen corresponding path program 1 times [2022-07-12 05:41:15,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:15,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922184579] [2022-07-12 05:41:15,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:15,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:15,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:15,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:15,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:15,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:41:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:15,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:15,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:15,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 05:41:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:15,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:15,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:15,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 05:41:15,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:15,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922184579] [2022-07-12 05:41:15,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922184579] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:15,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571987912] [2022-07-12 05:41:15,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:15,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:15,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:15,399 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) [2022-07-12 05:41:15,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 05:41:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:15,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 05:41:15,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 05:41:15,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:15,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571987912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:15,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:15,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-07-12 05:41:15,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259923963] [2022-07-12 05:41:15,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:15,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:41:15,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:15,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:41:15,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:41:15,748 INFO L87 Difference]: Start difference. First operand 659 states and 1069 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) [2022-07-12 05:41:15,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:15,826 INFO L93 Difference]: Finished difference Result 1183 states and 1933 transitions. [2022-07-12 05:41:15,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:41:15,827 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 [2022-07-12 05:41:15,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:15,830 INFO L225 Difference]: With dead ends: 1183 [2022-07-12 05:41:15,830 INFO L226 Difference]: Without dead ends: 683 [2022-07-12 05:41:15,833 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 [2022-07-12 05:41:15,834 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 134 mSDsluCounter, 4594 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5534 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:41:15,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5534 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:41:15,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-07-12 05:41:15,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 678. [2022-07-12 05:41:15,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 543 states have (on average 1.6464088397790055) internal successors, (894), 568 states have internal predecessors, (894), 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) [2022-07-12 05:41:15,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1099 transitions. [2022-07-12 05:41:15,873 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1099 transitions. Word has length 97 [2022-07-12 05:41:15,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:15,874 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 1099 transitions. [2022-07-12 05:41:15,874 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) [2022-07-12 05:41:15,874 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1099 transitions. [2022-07-12 05:41:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 05:41:15,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:15,876 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] [2022-07-12 05:41:15,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:16,091 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 [2022-07-12 05:41:16,091 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:16,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:16,091 INFO L85 PathProgramCache]: Analyzing trace with hash 658161361, now seen corresponding path program 1 times [2022-07-12 05:41:16,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:16,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352343581] [2022-07-12 05:41:16,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:16,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:16,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:16,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:16,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:16,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:41:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:16,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:16,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:16,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 05:41:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:16,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:16,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:16,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:16,443 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 05:41:16,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:16,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352343581] [2022-07-12 05:41:16,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352343581] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:16,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986423524] [2022-07-12 05:41:16,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:16,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:16,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:16,446 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) [2022-07-12 05:41:16,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 05:41:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:16,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 05:41:16,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:16,761 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 05:41:16,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:16,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986423524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:16,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:16,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-07-12 05:41:16,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977186896] [2022-07-12 05:41:16,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:16,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:41:16,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:16,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:41:16,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:41:16,763 INFO L87 Difference]: Start difference. First operand 678 states and 1099 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) [2022-07-12 05:41:16,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:16,857 INFO L93 Difference]: Finished difference Result 1213 states and 1984 transitions. [2022-07-12 05:41:16,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:41:16,858 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 [2022-07-12 05:41:16,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:16,861 INFO L225 Difference]: With dead ends: 1213 [2022-07-12 05:41:16,862 INFO L226 Difference]: Without dead ends: 713 [2022-07-12 05:41:16,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:41:16,864 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 143 mSDsluCounter, 4584 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5524 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 [2022-07-12 05:41:16,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5524 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:41:16,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-07-12 05:41:16,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 678. [2022-07-12 05:41:16,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 543 states have (on average 1.6464088397790055) internal successors, (894), 568 states have internal predecessors, (894), 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) [2022-07-12 05:41:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1099 transitions. [2022-07-12 05:41:16,884 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1099 transitions. Word has length 98 [2022-07-12 05:41:16,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:16,884 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 1099 transitions. [2022-07-12 05:41:16,884 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) [2022-07-12 05:41:16,885 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1099 transitions. [2022-07-12 05:41:16,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 05:41:16,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:16,887 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] [2022-07-12 05:41:16,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:17,113 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 [2022-07-12 05:41:17,113 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:17,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:17,114 INFO L85 PathProgramCache]: Analyzing trace with hash 480377681, now seen corresponding path program 1 times [2022-07-12 05:41:17,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:17,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671545554] [2022-07-12 05:41:17,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:17,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:17,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:17,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:17,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:17,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:41:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:17,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:17,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:17,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 05:41:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:17,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:17,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:17,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:17,484 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 05:41:17,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:17,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671545554] [2022-07-12 05:41:17,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671545554] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:17,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866514655] [2022-07-12 05:41:17,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:17,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:17,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:17,485 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) [2022-07-12 05:41:17,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 05:41:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:17,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 05:41:17,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 05:41:17,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:17,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866514655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:17,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:17,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-07-12 05:41:17,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292373961] [2022-07-12 05:41:17,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:17,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:41:17,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:17,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:41:17,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:41:17,837 INFO L87 Difference]: Start difference. First operand 678 states and 1099 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) [2022-07-12 05:41:17,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:17,973 INFO L93 Difference]: Finished difference Result 1198 states and 1958 transitions. [2022-07-12 05:41:17,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:41:17,973 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 [2022-07-12 05:41:17,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:17,977 INFO L225 Difference]: With dead ends: 1198 [2022-07-12 05:41:17,977 INFO L226 Difference]: Without dead ends: 698 [2022-07-12 05:41:17,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-07-12 05:41:17,980 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 177 mSDsluCounter, 5467 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6397 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 [2022-07-12 05:41:17,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6397 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:41:17,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2022-07-12 05:41:17,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 678. [2022-07-12 05:41:17,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 543 states have (on average 1.6464088397790055) internal successors, (894), 568 states have internal predecessors, (894), 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) [2022-07-12 05:41:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1099 transitions. [2022-07-12 05:41:17,999 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1099 transitions. Word has length 98 [2022-07-12 05:41:17,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:17,999 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 1099 transitions. [2022-07-12 05:41:18,000 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) [2022-07-12 05:41:18,000 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1099 transitions. [2022-07-12 05:41:18,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 05:41:18,002 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:18,002 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] [2022-07-12 05:41:18,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:18,226 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 [2022-07-12 05:41:18,226 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:18,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:18,227 INFO L85 PathProgramCache]: Analyzing trace with hash 961831970, now seen corresponding path program 1 times [2022-07-12 05:41:18,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:18,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10228765] [2022-07-12 05:41:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:18,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:18,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:18,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:18,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:18,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:41:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:18,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:18,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 05:41:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:18,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 05:41:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:18,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:18,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:18,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:18,552 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 05:41:18,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:18,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10228765] [2022-07-12 05:41:18,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10228765] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:18,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191092076] [2022-07-12 05:41:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:18,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:18,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:18,554 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) [2022-07-12 05:41:18,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 05:41:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:18,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:41:18,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 05:41:18,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:18,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191092076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:18,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:18,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-07-12 05:41:18,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784307235] [2022-07-12 05:41:18,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:18,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:41:18,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:18,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:41:18,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:41:18,838 INFO L87 Difference]: Start difference. First operand 678 states and 1099 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) [2022-07-12 05:41:18,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:18,876 INFO L93 Difference]: Finished difference Result 1250 states and 2043 transitions. [2022-07-12 05:41:18,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:41:18,877 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 [2022-07-12 05:41:18,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:18,880 INFO L225 Difference]: With dead ends: 1250 [2022-07-12 05:41:18,880 INFO L226 Difference]: Without dead ends: 678 [2022-07-12 05:41:18,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:41:18,883 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 23 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2803 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 [2022-07-12 05:41:18,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2803 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:41:18,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-07-12 05:41:18,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 678. [2022-07-12 05:41:18,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 543 states have (on average 1.6390423572744015) internal successors, (890), 568 states have internal predecessors, (890), 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) [2022-07-12 05:41:18,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1095 transitions. [2022-07-12 05:41:18,901 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1095 transitions. Word has length 98 [2022-07-12 05:41:18,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:18,902 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 1095 transitions. [2022-07-12 05:41:18,902 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) [2022-07-12 05:41:18,902 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1095 transitions. [2022-07-12 05:41:18,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 05:41:18,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:18,904 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] [2022-07-12 05:41:18,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:19,129 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 [2022-07-12 05:41:19,129 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:19,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash 617575246, now seen corresponding path program 1 times [2022-07-12 05:41:19,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:19,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909263422] [2022-07-12 05:41:19,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:19,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:19,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:19,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:19,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:19,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:41:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:19,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:19,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:19,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 05:41:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:19,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:19,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:19,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-12 05:41:19,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:19,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909263422] [2022-07-12 05:41:19,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909263422] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:19,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159720214] [2022-07-12 05:41:19,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:19,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:19,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:19,496 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) [2022-07-12 05:41:19,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 05:41:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:19,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 05:41:19,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 05:41:19,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:19,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159720214] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:19,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:19,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2022-07-12 05:41:19,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687635181] [2022-07-12 05:41:19,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:19,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:41:19,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:19,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:41:19,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-07-12 05:41:19,844 INFO L87 Difference]: Start difference. First operand 678 states and 1095 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) [2022-07-12 05:41:19,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:19,979 INFO L93 Difference]: Finished difference Result 1198 states and 1955 transitions. [2022-07-12 05:41:19,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:41:19,979 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 [2022-07-12 05:41:19,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:19,983 INFO L225 Difference]: With dead ends: 1198 [2022-07-12 05:41:19,983 INFO L226 Difference]: Without dead ends: 698 [2022-07-12 05:41:19,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2022-07-12 05:41:19,986 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 185 mSDsluCounter, 5430 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 6354 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 [2022-07-12 05:41:19,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 6354 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:41:19,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2022-07-12 05:41:20,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 678. [2022-07-12 05:41:20,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 543 states have (on average 1.6390423572744015) internal successors, (890), 568 states have internal predecessors, (890), 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) [2022-07-12 05:41:20,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1095 transitions. [2022-07-12 05:41:20,005 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1095 transitions. Word has length 99 [2022-07-12 05:41:20,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:20,005 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 1095 transitions. [2022-07-12 05:41:20,005 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) [2022-07-12 05:41:20,006 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1095 transitions. [2022-07-12 05:41:20,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 05:41:20,008 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:20,008 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] [2022-07-12 05:41:20,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:20,235 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 [2022-07-12 05:41:20,236 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:20,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:20,236 INFO L85 PathProgramCache]: Analyzing trace with hash -512634378, now seen corresponding path program 1 times [2022-07-12 05:41:20,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:20,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714367052] [2022-07-12 05:41:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:20,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:20,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:20,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:20,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:20,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:41:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:20,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:20,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:20,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:41:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:20,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:20,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:20,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:20,628 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-12 05:41:20,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:20,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714367052] [2022-07-12 05:41:20,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714367052] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:20,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079454655] [2022-07-12 05:41:20,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:20,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:20,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:20,633 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) [2022-07-12 05:41:20,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-12 05:41:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:20,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 05:41:20,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:20,913 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 05:41:20,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:20,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079454655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:20,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:20,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-12 05:41:20,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110007668] [2022-07-12 05:41:20,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:20,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:41:20,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:20,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:41:20,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:41:20,916 INFO L87 Difference]: Start difference. First operand 678 states and 1095 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) [2022-07-12 05:41:20,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:20,974 INFO L93 Difference]: Finished difference Result 1306 states and 2125 transitions. [2022-07-12 05:41:20,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 05:41:20,975 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 [2022-07-12 05:41:20,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:20,978 INFO L225 Difference]: With dead ends: 1306 [2022-07-12 05:41:20,978 INFO L226 Difference]: Without dead ends: 714 [2022-07-12 05:41:20,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:41:20,981 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 38 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2779 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 [2022-07-12 05:41:20,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2779 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:41:20,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-07-12 05:41:20,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 702. [2022-07-12 05:41:20,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 567 states have (on average 1.619047619047619) internal successors, (918), 592 states have internal predecessors, (918), 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) [2022-07-12 05:41:21,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1123 transitions. [2022-07-12 05:41:21,001 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1123 transitions. Word has length 100 [2022-07-12 05:41:21,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:21,001 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1123 transitions. [2022-07-12 05:41:21,002 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) [2022-07-12 05:41:21,002 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1123 transitions. [2022-07-12 05:41:21,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 05:41:21,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:21,004 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] [2022-07-12 05:41:21,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:21,219 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 [2022-07-12 05:41:21,219 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:21,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:21,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1107194685, now seen corresponding path program 1 times [2022-07-12 05:41:21,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:21,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41645647] [2022-07-12 05:41:21,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:21,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:21,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:21,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:21,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:21,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:41:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:21,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:21,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:21,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:41:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:21,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:21,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:21,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 05:41:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:21,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41645647] [2022-07-12 05:41:21,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41645647] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:21,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046708912] [2022-07-12 05:41:21,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:21,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:21,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:21,530 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) [2022-07-12 05:41:21,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-12 05:41:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:21,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 05:41:21,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 05:41:22,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:22,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046708912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:22,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:22,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2022-07-12 05:41:22,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831928259] [2022-07-12 05:41:22,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:22,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:41:22,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:22,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:41:22,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:41:22,120 INFO L87 Difference]: Start difference. First operand 702 states and 1123 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) [2022-07-12 05:41:25,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:25,052 INFO L93 Difference]: Finished difference Result 2274 states and 3759 transitions. [2022-07-12 05:41:25,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 05:41:25,052 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 [2022-07-12 05:41:25,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:25,062 INFO L225 Difference]: With dead ends: 2274 [2022-07-12 05:41:25,062 INFO L226 Difference]: Without dead ends: 1779 [2022-07-12 05:41:25,064 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 [2022-07-12 05:41:25,064 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 2918 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 3271 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3100 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 3898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 3271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:41:25,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3100 Valid, 2737 Invalid, 3898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 3271 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-12 05:41:25,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2022-07-12 05:41:25,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1592. [2022-07-12 05:41:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1270 states have (on average 1.6590551181102362) internal successors, (2107), 1313 states have internal predecessors, (2107), 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) [2022-07-12 05:41:25,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2628 transitions. [2022-07-12 05:41:25,123 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2628 transitions. Word has length 100 [2022-07-12 05:41:25,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:25,123 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2628 transitions. [2022-07-12 05:41:25,123 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) [2022-07-12 05:41:25,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2628 transitions. [2022-07-12 05:41:25,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-12 05:41:25,128 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:25,128 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] [2022-07-12 05:41:25,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:25,351 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 [2022-07-12 05:41:25,352 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:25,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:25,352 INFO L85 PathProgramCache]: Analyzing trace with hash 284240713, now seen corresponding path program 1 times [2022-07-12 05:41:25,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:25,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368705204] [2022-07-12 05:41:25,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:25,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:25,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:25,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:25,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:25,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:41:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:25,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:25,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:25,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:41:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:25,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:25,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:25,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:25,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:41:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:25,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:41:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:25,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 05:41:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:25,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 05:41:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:25,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 05:41:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 05:41:25,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:25,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368705204] [2022-07-12 05:41:25,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368705204] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:25,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474207715] [2022-07-12 05:41:25,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:25,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:25,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:25,907 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) [2022-07-12 05:41:25,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-12 05:41:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:26,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 2081 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 05:41:26,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:26,320 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 05:41:26,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:26,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474207715] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:26,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:26,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-12 05:41:26,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949734722] [2022-07-12 05:41:26,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:26,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:41:26,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:26,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:41:26,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:41:26,323 INFO L87 Difference]: Start difference. First operand 1592 states and 2628 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) [2022-07-12 05:41:26,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:26,490 INFO L93 Difference]: Finished difference Result 3253 states and 5443 transitions. [2022-07-12 05:41:26,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:41:26,491 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 [2022-07-12 05:41:26,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:26,501 INFO L225 Difference]: With dead ends: 3253 [2022-07-12 05:41:26,501 INFO L226 Difference]: Without dead ends: 1869 [2022-07-12 05:41:26,507 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 [2022-07-12 05:41:26,508 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 210 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 3844 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 [2022-07-12 05:41:26,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 3844 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:41:26,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2022-07-12 05:41:26,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1601. [2022-07-12 05:41:26,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1279 states have (on average 1.6544175136825645) internal successors, (2116), 1322 states have internal predecessors, (2116), 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) [2022-07-12 05:41:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2637 transitions. [2022-07-12 05:41:26,608 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2637 transitions. Word has length 139 [2022-07-12 05:41:26,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:26,608 INFO L495 AbstractCegarLoop]: Abstraction has 1601 states and 2637 transitions. [2022-07-12 05:41:26,608 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) [2022-07-12 05:41:26,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2637 transitions. [2022-07-12 05:41:26,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-12 05:41:26,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:26,613 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] [2022-07-12 05:41:26,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:26,827 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 [2022-07-12 05:41:26,827 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:26,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:26,828 INFO L85 PathProgramCache]: Analyzing trace with hash -320954279, now seen corresponding path program 1 times [2022-07-12 05:41:26,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:26,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021579803] [2022-07-12 05:41:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:26,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:26,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:26,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:26,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:26,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:41:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:26,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:26,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:27,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:41:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:27,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:27,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:27,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:27,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:41:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:27,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:41:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:27,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:41:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:27,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 05:41:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:27,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:41:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:27,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:41:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:41:27,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:27,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021579803] [2022-07-12 05:41:27,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021579803] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:27,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275658189] [2022-07-12 05:41:27,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:27,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:27,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:27,326 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) [2022-07-12 05:41:27,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-12 05:41:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:27,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 2088 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 05:41:27,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 05:41:27,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:27,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275658189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:27,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:27,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-07-12 05:41:27,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140099995] [2022-07-12 05:41:27,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:27,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:41:27,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:27,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:41:27,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:41:27,889 INFO L87 Difference]: Start difference. First operand 1601 states and 2637 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) [2022-07-12 05:41:28,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:28,236 INFO L93 Difference]: Finished difference Result 1683 states and 2765 transitions. [2022-07-12 05:41:28,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:41:28,237 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 [2022-07-12 05:41:28,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:28,249 INFO L225 Difference]: With dead ends: 1683 [2022-07-12 05:41:28,249 INFO L226 Difference]: Without dead ends: 1668 [2022-07-12 05:41:28,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:41:28,251 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 947 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 1688 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 [2022-07-12 05:41:28,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 1688 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 05:41:28,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-07-12 05:41:28,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1607. [2022-07-12 05:41:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1285 states have (on average 1.65136186770428) internal successors, (2122), 1328 states have internal predecessors, (2122), 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) [2022-07-12 05:41:28,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2643 transitions. [2022-07-12 05:41:28,312 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2643 transitions. Word has length 142 [2022-07-12 05:41:28,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:28,312 INFO L495 AbstractCegarLoop]: Abstraction has 1607 states and 2643 transitions. [2022-07-12 05:41:28,312 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) [2022-07-12 05:41:28,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2643 transitions. [2022-07-12 05:41:28,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 05:41:28,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:28,317 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] [2022-07-12 05:41:28,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-07-12 05:41:28,531 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 [2022-07-12 05:41:28,531 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:28,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:28,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1108236730, now seen corresponding path program 1 times [2022-07-12 05:41:28,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:28,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803870526] [2022-07-12 05:41:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:28,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:28,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:28,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:28,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:41:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:28,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:28,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:28,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:41:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:28,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:28,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:28,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:41:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:28,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:41:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:28,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:41:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:28,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:41:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:28,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 05:41:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:29,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:41:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:29,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 05:41:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:29,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 05:41:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:29,013 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:41:29,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:29,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803870526] [2022-07-12 05:41:29,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803870526] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:29,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981763625] [2022-07-12 05:41:29,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:29,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:29,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:29,016 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) [2022-07-12 05:41:29,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-12 05:41:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:29,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 2104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 05:41:29,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 05:41:29,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:29,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981763625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:29,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:29,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-12 05:41:29,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465691086] [2022-07-12 05:41:29,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:29,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:41:29,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:29,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:41:29,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-07-12 05:41:29,480 INFO L87 Difference]: Start difference. First operand 1607 states and 2643 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-12 05:41:31,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:31,984 INFO L93 Difference]: Finished difference Result 4298 states and 7119 transitions. [2022-07-12 05:41:31,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 05:41:31,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 147 [2022-07-12 05:41:31,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:32,002 INFO L225 Difference]: With dead ends: 4298 [2022-07-12 05:41:32,002 INFO L226 Difference]: Without dead ends: 2732 [2022-07-12 05:41:32,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2022-07-12 05:41:32,009 INFO L413 NwaCegarLoop]: 1198 mSDtfsCounter, 1791 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 4671 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 2938 SdHoareTripleChecker+Invalid, 5034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 4671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:41:32,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 2938 Invalid, 5034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 4671 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 05:41:32,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2022-07-12 05:41:32,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2503. [2022-07-12 05:41:32,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 1974 states have (on average 1.6332320162107397) internal successors, (3224), 2026 states have internal predecessors, (3224), 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) [2022-07-12 05:41:32,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4107 transitions. [2022-07-12 05:41:32,128 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4107 transitions. Word has length 147 [2022-07-12 05:41:32,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:32,128 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 4107 transitions. [2022-07-12 05:41:32,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-12 05:41:32,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4107 transitions. [2022-07-12 05:41:32,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-12 05:41:32,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:32,135 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] [2022-07-12 05:41:32,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:32,343 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 [2022-07-12 05:41:32,343 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:32,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:32,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2118703028, now seen corresponding path program 1 times [2022-07-12 05:41:32,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:32,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126060100] [2022-07-12 05:41:32,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:32,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:32,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:32,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:32,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:32,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:41:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:32,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:32,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:32,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:41:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:32,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:32,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:32,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:32,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:41:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:32,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:41:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:32,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:41:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:32,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 05:41:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:32,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:41:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:32,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:41:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:32,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:41:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:41:32,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:32,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126060100] [2022-07-12 05:41:32,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126060100] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:32,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688200875] [2022-07-12 05:41:32,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:32,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:32,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:32,860 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) [2022-07-12 05:41:32,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-12 05:41:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:33,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 2104 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 05:41:33,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:33,238 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 05:41:33,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:33,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688200875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:33,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:33,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-12 05:41:33,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023321955] [2022-07-12 05:41:33,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:33,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:41:33,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:33,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:41:33,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:41:33,240 INFO L87 Difference]: Start difference. First operand 2503 states and 4107 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) [2022-07-12 05:41:33,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:33,557 INFO L93 Difference]: Finished difference Result 2679 states and 4349 transitions. [2022-07-12 05:41:33,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 05:41:33,558 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 [2022-07-12 05:41:33,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:33,569 INFO L225 Difference]: With dead ends: 2679 [2022-07-12 05:41:33,569 INFO L226 Difference]: Without dead ends: 2664 [2022-07-12 05:41:33,570 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 [2022-07-12 05:41:33,571 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 922 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 3778 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 05:41:33,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 3778 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 05:41:33,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2022-07-12 05:41:33,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2605. [2022-07-12 05:41:33,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2052 states have (on average 1.6237816764132553) internal successors, (3332), 2104 states have internal predecessors, (3332), 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) [2022-07-12 05:41:33,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 4250 transitions. [2022-07-12 05:41:33,710 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 4250 transitions. Word has length 148 [2022-07-12 05:41:33,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:33,710 INFO L495 AbstractCegarLoop]: Abstraction has 2605 states and 4250 transitions. [2022-07-12 05:41:33,710 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) [2022-07-12 05:41:33,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 4250 transitions. [2022-07-12 05:41:33,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-12 05:41:33,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:33,718 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] [2022-07-12 05:41:33,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:33,939 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 [2022-07-12 05:41:33,939 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:33,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:33,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1262182809, now seen corresponding path program 1 times [2022-07-12 05:41:33,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:33,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822158417] [2022-07-12 05:41:33,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:33,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:41:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:41:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:41:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:41:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:41:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 05:41:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:41:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:41:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:41:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:41:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:41:34,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:34,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822158417] [2022-07-12 05:41:34,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822158417] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:34,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543121197] [2022-07-12 05:41:34,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:34,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:34,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:34,452 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) [2022-07-12 05:41:34,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-12 05:41:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:34,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 2141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 05:41:34,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:34,768 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:41:34,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:34,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543121197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:34,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:34,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-07-12 05:41:34,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949576151] [2022-07-12 05:41:34,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:34,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:41:34,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:34,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:41:34,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-12 05:41:34,770 INFO L87 Difference]: Start difference. First operand 2605 states and 4250 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) [2022-07-12 05:41:34,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:34,923 INFO L93 Difference]: Finished difference Result 5184 states and 8470 transitions. [2022-07-12 05:41:34,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:41:34,924 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 [2022-07-12 05:41:34,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:34,939 INFO L225 Difference]: With dead ends: 5184 [2022-07-12 05:41:34,939 INFO L226 Difference]: Without dead ends: 2574 [2022-07-12 05:41:34,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:41:34,948 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 11 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2805 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 [2022-07-12 05:41:34,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2805 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:41:34,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-07-12 05:41:35,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2574. [2022-07-12 05:41:35,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2574 states, 2024 states have (on average 1.6235177865612649) internal successors, (3286), 2074 states have internal predecessors, (3286), 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) [2022-07-12 05:41:35,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 4200 transitions. [2022-07-12 05:41:35,068 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 4200 transitions. Word has length 159 [2022-07-12 05:41:35,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:35,069 INFO L495 AbstractCegarLoop]: Abstraction has 2574 states and 4200 transitions. [2022-07-12 05:41:35,069 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) [2022-07-12 05:41:35,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 4200 transitions. [2022-07-12 05:41:35,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 05:41:35,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:35,074 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] [2022-07-12 05:41:35,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:35,299 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 [2022-07-12 05:41:35,300 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:35,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:35,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1250629604, now seen corresponding path program 1 times [2022-07-12 05:41:35,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:35,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650409689] [2022-07-12 05:41:35,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:35,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:41:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 05:41:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:41:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:41:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:41:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 05:41:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:41:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:41:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:41:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:41:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 05:41:35,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:35,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650409689] [2022-07-12 05:41:35,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650409689] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:35,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041175581] [2022-07-12 05:41:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:35,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:35,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:35,768 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) [2022-07-12 05:41:35,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-12 05:41:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:36,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 2144 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-12 05:41:36,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:36,146 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:41:36,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:36,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041175581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:36,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:36,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-12 05:41:36,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30767595] [2022-07-12 05:41:36,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:36,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:41:36,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:36,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:41:36,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-12 05:41:36,149 INFO L87 Difference]: Start difference. First operand 2574 states and 4200 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) [2022-07-12 05:41:36,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:36,300 INFO L93 Difference]: Finished difference Result 5117 states and 8364 transitions. [2022-07-12 05:41:36,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:41:36,301 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 [2022-07-12 05:41:36,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:36,310 INFO L225 Difference]: With dead ends: 5117 [2022-07-12 05:41:36,310 INFO L226 Difference]: Without dead ends: 2574 [2022-07-12 05:41:36,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:41:36,321 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 143 mSDsluCounter, 4605 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5561 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:41:36,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5561 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:41:36,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-07-12 05:41:36,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2553. [2022-07-12 05:41:36,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2003 states have (on average 1.6235646530204693) internal successors, (3252), 2053 states have internal predecessors, (3252), 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) [2022-07-12 05:41:36,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 4166 transitions. [2022-07-12 05:41:36,417 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 4166 transitions. Word has length 161 [2022-07-12 05:41:36,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:36,418 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 4166 transitions. [2022-07-12 05:41:36,418 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) [2022-07-12 05:41:36,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 4166 transitions. [2022-07-12 05:41:36,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-12 05:41:36,423 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:36,423 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] [2022-07-12 05:41:36,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:36,638 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 [2022-07-12 05:41:36,638 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:36,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:36,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1622556927, now seen corresponding path program 1 times [2022-07-12 05:41:36,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:36,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052821793] [2022-07-12 05:41:36,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:36,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:36,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:36,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:36,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:36,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 05:41:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:36,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:36,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 05:41:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:36,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:36,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:37,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:37,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:41:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:37,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:41:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:37,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:41:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:37,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 05:41:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:37,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:41:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:37,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:41:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:37,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:41:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:37,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:41:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 05:41:37,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:37,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052821793] [2022-07-12 05:41:37,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052821793] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:37,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551877767] [2022-07-12 05:41:37,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:37,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:37,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:37,228 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) [2022-07-12 05:41:37,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-12 05:41:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:37,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 2150 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:41:37,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:41:37,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:37,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551877767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:37,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:37,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-07-12 05:41:37,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238515566] [2022-07-12 05:41:37,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:37,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:41:37,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:37,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:41:37,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-12 05:41:37,595 INFO L87 Difference]: Start difference. First operand 2553 states and 4166 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) [2022-07-12 05:41:37,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:37,744 INFO L93 Difference]: Finished difference Result 5075 states and 8298 transitions. [2022-07-12 05:41:37,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:41:37,745 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 [2022-07-12 05:41:37,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:37,756 INFO L225 Difference]: With dead ends: 5075 [2022-07-12 05:41:37,757 INFO L226 Difference]: Without dead ends: 2553 [2022-07-12 05:41:37,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-07-12 05:41:37,764 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 176 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:41:37,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2638 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:41:37,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2022-07-12 05:41:37,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2553. [2022-07-12 05:41:37,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2003 states have (on average 1.6230654018971542) internal successors, (3251), 2053 states have internal predecessors, (3251), 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) [2022-07-12 05:41:37,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 4165 transitions. [2022-07-12 05:41:37,862 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 4165 transitions. Word has length 163 [2022-07-12 05:41:37,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:37,863 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 4165 transitions. [2022-07-12 05:41:37,863 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) [2022-07-12 05:41:37,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 4165 transitions. [2022-07-12 05:41:37,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-12 05:41:37,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:37,868 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] [2022-07-12 05:41:37,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:38,091 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 [2022-07-12 05:41:38,092 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:38,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:38,092 INFO L85 PathProgramCache]: Analyzing trace with hash 229539051, now seen corresponding path program 1 times [2022-07-12 05:41:38,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:38,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296726637] [2022-07-12 05:41:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:38,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:41:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:41:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:41:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:41:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:41:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 05:41:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:41:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:41:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:41:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:41:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 05:41:38,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:38,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296726637] [2022-07-12 05:41:38,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296726637] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:38,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:41:38,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 05:41:38,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757246011] [2022-07-12 05:41:38,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:38,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:41:38,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:38,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:41:38,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:41:38,592 INFO L87 Difference]: Start difference. First operand 2553 states and 4165 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) [2022-07-12 05:41:44,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:44,595 INFO L93 Difference]: Finished difference Result 5979 states and 9887 transitions. [2022-07-12 05:41:44,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 05:41:44,596 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 [2022-07-12 05:41:44,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:44,610 INFO L225 Difference]: With dead ends: 5979 [2022-07-12 05:41:44,610 INFO L226 Difference]: Without dead ends: 3428 [2022-07-12 05:41:44,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-07-12 05:41:44,616 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 1039 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 3764 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 4059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 3764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:41:44,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 2255 Invalid, 4059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 3764 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-12 05:41:44,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2022-07-12 05:41:44,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 2513. [2022-07-12 05:41:44,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 1966 states have (on average 1.6215666327568667) internal successors, (3188), 2014 states have internal predecessors, (3188), 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) [2022-07-12 05:41:44,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 4098 transitions. [2022-07-12 05:41:44,866 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 4098 transitions. Word has length 164 [2022-07-12 05:41:44,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:44,866 INFO L495 AbstractCegarLoop]: Abstraction has 2513 states and 4098 transitions. [2022-07-12 05:41:44,867 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) [2022-07-12 05:41:44,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 4098 transitions. [2022-07-12 05:41:44,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-12 05:41:44,872 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:44,872 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] [2022-07-12 05:41:44,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 05:41:44,872 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:44,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:44,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1611615097, now seen corresponding path program 1 times [2022-07-12 05:41:44,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:44,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97704354] [2022-07-12 05:41:44,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:44,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:45,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:41:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:45,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:45,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:45,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 05:41:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:45,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:45,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:45,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:45,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:41:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:45,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:41:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:45,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:41:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:45,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 05:41:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:45,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:41:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:45,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:41:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:45,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:41:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:45,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:41:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:41:45,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:45,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97704354] [2022-07-12 05:41:45,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97704354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:45,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:41:45,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 05:41:45,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509032170] [2022-07-12 05:41:45,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:45,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 05:41:45,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:45,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 05:41:45,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:41:45,405 INFO L87 Difference]: Start difference. First operand 2513 states and 4098 transitions. Second operand has 11 states, 10 states have (on average 12.1) internal successors, (121), 6 states have internal predecessors, (121), 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) [2022-07-12 05:41:53,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:53,128 INFO L93 Difference]: Finished difference Result 5858 states and 9686 transitions. [2022-07-12 05:41:53,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 05:41:53,129 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.1) internal successors, (121), 6 states have internal predecessors, (121), 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 165 [2022-07-12 05:41:53,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:53,169 INFO L225 Difference]: With dead ends: 5858 [2022-07-12 05:41:53,169 INFO L226 Difference]: Without dead ends: 3446 [2022-07-12 05:41:53,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2022-07-12 05:41:53,175 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 1109 mSDsluCounter, 2193 mSDsCounter, 0 mSdLazyCounter, 6837 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 7156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 6837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:41:53,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 3187 Invalid, 7156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 6837 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-07-12 05:41:53,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3446 states. [2022-07-12 05:41:53,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3446 to 2513. [2022-07-12 05:41:53,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 1966 states have (on average 1.621057985757884) internal successors, (3187), 2014 states have internal predecessors, (3187), 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) [2022-07-12 05:41:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 4097 transitions. [2022-07-12 05:41:53,409 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 4097 transitions. Word has length 165 [2022-07-12 05:41:53,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:53,409 INFO L495 AbstractCegarLoop]: Abstraction has 2513 states and 4097 transitions. [2022-07-12 05:41:53,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.1) internal successors, (121), 6 states have internal predecessors, (121), 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) [2022-07-12 05:41:53,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 4097 transitions. [2022-07-12 05:41:53,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-12 05:41:53,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:53,415 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] [2022-07-12 05:41:53,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 05:41:53,415 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:53,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:53,416 INFO L85 PathProgramCache]: Analyzing trace with hash 865377547, now seen corresponding path program 1 times [2022-07-12 05:41:53,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:53,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895189325] [2022-07-12 05:41:53,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:53,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:41:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 05:41:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:41:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:41:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:41:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 05:41:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:41:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:41:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:41:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:41:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:53,911 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 05:41:53,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:53,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895189325] [2022-07-12 05:41:53,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895189325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:53,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:41:53,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 05:41:53,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939249983] [2022-07-12 05:41:53,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:53,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 05:41:53,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:53,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 05:41:53,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:41:53,915 INFO L87 Difference]: Start difference. First operand 2513 states and 4097 transitions. Second operand has 11 states, 10 states have (on average 12.3) internal successors, (123), 6 states have internal predecessors, (123), 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) [2022-07-12 05:42:00,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:42:00,592 INFO L93 Difference]: Finished difference Result 5874 states and 9713 transitions. [2022-07-12 05:42:00,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 05:42:00,593 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.3) internal successors, (123), 6 states have internal predecessors, (123), 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 166 [2022-07-12 05:42:00,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:42:00,605 INFO L225 Difference]: With dead ends: 5874 [2022-07-12 05:42:00,605 INFO L226 Difference]: Without dead ends: 3404 [2022-07-12 05:42:00,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2022-07-12 05:42:00,613 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 1531 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 6258 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 6719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 6258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-12 05:42:00,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1613 Valid, 3082 Invalid, 6719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 6258 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-12 05:42:00,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2022-07-12 05:42:00,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 2501. [2022-07-12 05:42:00,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2501 states, 1954 states have (on average 1.6238485158648925) internal successors, (3173), 2002 states have internal predecessors, (3173), 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) [2022-07-12 05:42:00,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2501 states to 2501 states and 4083 transitions. [2022-07-12 05:42:00,927 INFO L78 Accepts]: Start accepts. Automaton has 2501 states and 4083 transitions. Word has length 166 [2022-07-12 05:42:00,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:42:00,927 INFO L495 AbstractCegarLoop]: Abstraction has 2501 states and 4083 transitions. [2022-07-12 05:42:00,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.3) internal successors, (123), 6 states have internal predecessors, (123), 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) [2022-07-12 05:42:00,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 4083 transitions. [2022-07-12 05:42:00,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-12 05:42:00,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:42:00,932 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] [2022-07-12 05:42:00,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 05:42:00,933 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:42:00,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:42:00,933 INFO L85 PathProgramCache]: Analyzing trace with hash -65572467, now seen corresponding path program 1 times [2022-07-12 05:42:00,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:42:00,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875437820] [2022-07-12 05:42:00,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:42:00,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:42:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:42:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:42:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:42:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:42:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 05:42:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:42:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:42:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:42:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:42:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 05:42:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:42:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:42:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:42:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:42:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:42:01,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:42:01,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875437820] [2022-07-12 05:42:01,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875437820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:42:01,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:42:01,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 05:42:01,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760400131] [2022-07-12 05:42:01,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:42:01,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 05:42:01,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:42:01,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 05:42:01,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:42:01,409 INFO L87 Difference]: Start difference. First operand 2501 states and 4083 transitions. Second operand has 11 states, 10 states have (on average 12.2) internal successors, (122), 6 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) [2022-07-12 05:42:08,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:42:08,482 INFO L93 Difference]: Finished difference Result 5925 states and 9784 transitions. [2022-07-12 05:42:08,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 05:42:08,483 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 6 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 166 [2022-07-12 05:42:08,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:42:08,496 INFO L225 Difference]: With dead ends: 5925 [2022-07-12 05:42:08,496 INFO L226 Difference]: Without dead ends: 3461 [2022-07-12 05:42:08,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2022-07-12 05:42:08,503 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 2039 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 6189 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 3080 SdHoareTripleChecker+Invalid, 6801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 6189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-12 05:42:08,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 3080 Invalid, 6801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 6189 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-12 05:42:08,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2022-07-12 05:42:08,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 2505. [2022-07-12 05:42:08,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 1958 states have (on average 1.6220633299284986) internal successors, (3176), 2006 states have internal predecessors, (3176), 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) [2022-07-12 05:42:08,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4086 transitions. [2022-07-12 05:42:08,825 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4086 transitions. Word has length 166 [2022-07-12 05:42:08,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:42:08,825 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 4086 transitions. [2022-07-12 05:42:08,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 6 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) [2022-07-12 05:42:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4086 transitions. [2022-07-12 05:42:08,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 05:42:08,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:42:08,829 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] [2022-07-12 05:42:08,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 05:42:08,830 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:42:08,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:42:08,830 INFO L85 PathProgramCache]: Analyzing trace with hash -123023872, now seen corresponding path program 1 times [2022-07-12 05:42:08,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:42:08,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265361476] [2022-07-12 05:42:08,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:42:08,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:42:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:08,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:42:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:08,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:08,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:42:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:08,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:42:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:08,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:08,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:42:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:09,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:42:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:09,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:09,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:09,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:42:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:09,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:42:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:09,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:42:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:09,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:42:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:09,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 05:42:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:09,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:42:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:09,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:42:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:09,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:42:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:09,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:42:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:09,438 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 05:42:09,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:42:09,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265361476] [2022-07-12 05:42:09,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265361476] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:42:09,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:42:09,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 05:42:09,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783403767] [2022-07-12 05:42:09,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:42:09,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 05:42:09,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:42:09,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 05:42:09,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-12 05:42:09,440 INFO L87 Difference]: Start difference. First operand 2505 states and 4086 transitions. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 7 states have internal predecessors, (116), 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) [2022-07-12 05:42:22,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:42:22,929 INFO L93 Difference]: Finished difference Result 7864 states and 13363 transitions. [2022-07-12 05:42:22,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-12 05:42:22,930 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 7 states have internal predecessors, (116), 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 167 [2022-07-12 05:42:22,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:42:22,950 INFO L225 Difference]: With dead ends: 7864 [2022-07-12 05:42:22,950 INFO L226 Difference]: Without dead ends: 5470 [2022-07-12 05:42:22,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=310, Invalid=1172, Unknown=0, NotChecked=0, Total=1482 [2022-07-12 05:42:22,959 INFO L413 NwaCegarLoop]: 1055 mSDtfsCounter, 3488 mSDsluCounter, 3071 mSDsCounter, 0 mSdLazyCounter, 10454 mSolverCounterSat, 1269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3562 SdHoareTripleChecker+Valid, 4126 SdHoareTripleChecker+Invalid, 11723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1269 IncrementalHoareTripleChecker+Valid, 10454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:42:22,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3562 Valid, 4126 Invalid, 11723 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1269 Valid, 10454 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-07-12 05:42:22,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5470 states. [2022-07-12 05:42:23,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5470 to 4072. [2022-07-12 05:42:23,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4072 states, 3173 states have (on average 1.6082571698707848) internal successors, (5103), 3249 states have internal predecessors, (5103), 697 states have call successors, (697), 162 states have call predecessors, (697), 201 states have return successors, (911), 682 states have call predecessors, (911), 692 states have call successors, (911) [2022-07-12 05:42:23,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4072 states to 4072 states and 6711 transitions. [2022-07-12 05:42:23,604 INFO L78 Accepts]: Start accepts. Automaton has 4072 states and 6711 transitions. Word has length 167 [2022-07-12 05:42:23,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:42:23,605 INFO L495 AbstractCegarLoop]: Abstraction has 4072 states and 6711 transitions. [2022-07-12 05:42:23,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 7 states have internal predecessors, (116), 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) [2022-07-12 05:42:23,605 INFO L276 IsEmpty]: Start isEmpty. Operand 4072 states and 6711 transitions. [2022-07-12 05:42:23,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-12 05:42:23,610 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:42:23,610 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] [2022-07-12 05:42:23,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 05:42:23,610 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:42:23,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:42:23,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1240639278, now seen corresponding path program 1 times [2022-07-12 05:42:23,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:42:23,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951348947] [2022-07-12 05:42:23,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:42:23,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:42:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:23,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:42:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:23,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:23,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:42:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:23,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:42:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:23,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:23,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:42:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:23,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:42:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:23,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:23,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:24,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:42:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:24,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:42:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:24,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:42:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:24,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:42:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:24,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 05:42:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:24,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 05:42:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:24,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:42:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:24,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 05:42:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:24,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 05:42:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 05:42:24,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:42:24,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951348947] [2022-07-12 05:42:24,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951348947] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:42:24,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:42:24,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 05:42:24,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805430081] [2022-07-12 05:42:24,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:42:24,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 05:42:24,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:42:24,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 05:42:24,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:42:24,163 INFO L87 Difference]: Start difference. First operand 4072 states and 6711 transitions. Second operand has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 6 states have internal predecessors, (118), 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) [2022-07-12 05:42:37,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:42:37,286 INFO L93 Difference]: Finished difference Result 13546 states and 23841 transitions. [2022-07-12 05:42:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 05:42:37,287 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 6 states have internal predecessors, (118), 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 169 [2022-07-12 05:42:37,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:42:37,339 INFO L225 Difference]: With dead ends: 13546 [2022-07-12 05:42:37,340 INFO L226 Difference]: Without dead ends: 9589 [2022-07-12 05:42:37,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=272, Invalid=988, Unknown=0, NotChecked=0, Total=1260 [2022-07-12 05:42:37,361 INFO L413 NwaCegarLoop]: 1117 mSDtfsCounter, 4290 mSDsluCounter, 3205 mSDsCounter, 0 mSdLazyCounter, 8834 mSolverCounterSat, 1483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4371 SdHoareTripleChecker+Valid, 4322 SdHoareTripleChecker+Invalid, 10317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1483 IncrementalHoareTripleChecker+Valid, 8834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:42:37,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4371 Valid, 4322 Invalid, 10317 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1483 Valid, 8834 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-07-12 05:42:37,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9589 states. [2022-07-12 05:42:38,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9589 to 7169. [2022-07-12 05:42:38,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7169 states, 5580 states have (on average 1.6041218637992831) internal successors, (8951), 5702 states have internal predecessors, (8951), 1229 states have call successors, (1229), 288 states have call predecessors, (1229), 359 states have return successors, (1892), 1222 states have call predecessors, (1892), 1224 states have call successors, (1892) [2022-07-12 05:42:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7169 states to 7169 states and 12072 transitions. [2022-07-12 05:42:38,204 INFO L78 Accepts]: Start accepts. Automaton has 7169 states and 12072 transitions. Word has length 169 [2022-07-12 05:42:38,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:42:38,204 INFO L495 AbstractCegarLoop]: Abstraction has 7169 states and 12072 transitions. [2022-07-12 05:42:38,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 6 states have internal predecessors, (118), 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) [2022-07-12 05:42:38,205 INFO L276 IsEmpty]: Start isEmpty. Operand 7169 states and 12072 transitions. [2022-07-12 05:42:38,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-12 05:42:38,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:42:38,210 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] [2022-07-12 05:42:38,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 05:42:38,210 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:42:38,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:42:38,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1844009024, now seen corresponding path program 1 times [2022-07-12 05:42:38,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:42:38,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197667330] [2022-07-12 05:42:38,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:42:38,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:42:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:42:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:42:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:42:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:42:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:42:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:42:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:42:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:42:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:42:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:42:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:42:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 05:42:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:42:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 05:42:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:38,796 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 05:42:38,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:42:38,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197667330] [2022-07-12 05:42:38,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197667330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:42:38,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:42:38,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 05:42:38,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298402323] [2022-07-12 05:42:38,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:42:38,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 05:42:38,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:42:38,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 05:42:38,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-12 05:42:38,799 INFO L87 Difference]: Start difference. First operand 7169 states and 12072 transitions. Second operand has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 8 states have internal predecessors, (119), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-12 05:42:57,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:42:57,960 INFO L93 Difference]: Finished difference Result 22472 states and 41792 transitions. [2022-07-12 05:42:57,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-12 05:42:57,961 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 8 states have internal predecessors, (119), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 170 [2022-07-12 05:42:57,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:42:58,055 INFO L225 Difference]: With dead ends: 22472 [2022-07-12 05:42:58,055 INFO L226 Difference]: Without dead ends: 15426 [2022-07-12 05:42:58,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=548, Invalid=2208, Unknown=0, NotChecked=0, Total=2756 [2022-07-12 05:42:58,099 INFO L413 NwaCegarLoop]: 1338 mSDtfsCounter, 6308 mSDsluCounter, 3808 mSDsCounter, 0 mSdLazyCounter, 11661 mSolverCounterSat, 2463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6353 SdHoareTripleChecker+Valid, 5146 SdHoareTripleChecker+Invalid, 14124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2463 IncrementalHoareTripleChecker+Valid, 11661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:42:58,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6353 Valid, 5146 Invalid, 14124 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2463 Valid, 11661 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2022-07-12 05:42:58,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15426 states. [2022-07-12 05:42:59,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15426 to 11746. [2022-07-12 05:42:59,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11746 states, 9122 states have (on average 1.582657311992984) internal successors, (14437), 9280 states have internal predecessors, (14437), 2014 states have call successors, (2014), 480 states have call predecessors, (2014), 609 states have return successors, (3824), 2073 states have call predecessors, (3824), 2009 states have call successors, (3824) [2022-07-12 05:42:59,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11746 states to 11746 states and 20275 transitions. [2022-07-12 05:42:59,606 INFO L78 Accepts]: Start accepts. Automaton has 11746 states and 20275 transitions. Word has length 170 [2022-07-12 05:42:59,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:42:59,607 INFO L495 AbstractCegarLoop]: Abstraction has 11746 states and 20275 transitions. [2022-07-12 05:42:59,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.153846153846153) internal successors, (119), 8 states have internal predecessors, (119), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-12 05:42:59,607 INFO L276 IsEmpty]: Start isEmpty. Operand 11746 states and 20275 transitions. [2022-07-12 05:42:59,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-12 05:42:59,613 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:42:59,613 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] [2022-07-12 05:42:59,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 05:42:59,613 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:42:59,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:42:59,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1123021479, now seen corresponding path program 1 times [2022-07-12 05:42:59,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:42:59,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299955937] [2022-07-12 05:42:59,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:42:59,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:42:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:59,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:42:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:59,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:59,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:42:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:59,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:42:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:59,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:59,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:42:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:59,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:42:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:59,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:42:59,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:42:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:00,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:00,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:43:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:00,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:43:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:00,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:43:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:00,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:43:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:00,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:43:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:00,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 05:43:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:00,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 05:43:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:00,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 05:43:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:00,158 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 05:43:00,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:43:00,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299955937] [2022-07-12 05:43:00,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299955937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:43:00,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:43:00,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 05:43:00,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571148584] [2022-07-12 05:43:00,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:43:00,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 05:43:00,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:43:00,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 05:43:00,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-12 05:43:00,161 INFO L87 Difference]: Start difference. First operand 11746 states and 20275 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) [2022-07-12 05:43:16,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:43:16,747 INFO L93 Difference]: Finished difference Result 41425 states and 80143 transitions. [2022-07-12 05:43:16,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-12 05:43:16,748 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 [2022-07-12 05:43:16,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:43:16,929 INFO L225 Difference]: With dead ends: 41425 [2022-07-12 05:43:16,929 INFO L226 Difference]: Without dead ends: 29818 [2022-07-12 05:43:17,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=310, Invalid=1172, Unknown=0, NotChecked=0, Total=1482 [2022-07-12 05:43:17,002 INFO L413 NwaCegarLoop]: 1054 mSDtfsCounter, 3480 mSDsluCounter, 3146 mSDsCounter, 0 mSdLazyCounter, 9970 mSolverCounterSat, 1280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3558 SdHoareTripleChecker+Valid, 4200 SdHoareTripleChecker+Invalid, 11250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1280 IncrementalHoareTripleChecker+Valid, 9970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:43:17,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3558 Valid, 4200 Invalid, 11250 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1280 Valid, 9970 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-07-12 05:43:17,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29818 states. [2022-07-12 05:43:19,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29818 to 23044. [2022-07-12 05:43:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23044 states, 17952 states have (on average 1.584280303030303) internal successors, (28441), 18214 states have internal predecessors, (28441), 3880 states have call successors, (3880), 925 states have call predecessors, (3880), 1211 states have return successors, (8333), 4080 states have call predecessors, (8333), 3875 states have call successors, (8333) [2022-07-12 05:43:20,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23044 states to 23044 states and 40654 transitions. [2022-07-12 05:43:20,067 INFO L78 Accepts]: Start accepts. Automaton has 23044 states and 40654 transitions. Word has length 172 [2022-07-12 05:43:20,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:43:20,067 INFO L495 AbstractCegarLoop]: Abstraction has 23044 states and 40654 transitions. [2022-07-12 05:43:20,068 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) [2022-07-12 05:43:20,068 INFO L276 IsEmpty]: Start isEmpty. Operand 23044 states and 40654 transitions. [2022-07-12 05:43:20,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-12 05:43:20,075 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:43:20,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:43:20,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-12 05:43:20,076 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:43:20,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:43:20,077 INFO L85 PathProgramCache]: Analyzing trace with hash 2069292989, now seen corresponding path program 1 times [2022-07-12 05:43:20,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:43:20,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557283655] [2022-07-12 05:43:20,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:43:20,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:43:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:43:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:43:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:43:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:43:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:43:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:43:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:43:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:43:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 05:43:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:43:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:43:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 05:43:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 05:43:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-12 05:43:20,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:43:20,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557283655] [2022-07-12 05:43:20,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557283655] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:43:20,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026707206] [2022-07-12 05:43:20,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:43:20,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:43:20,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:43:20,691 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) [2022-07-12 05:43:20,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-12 05:43:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:20,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 2186 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 05:43:21,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:43:21,221 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 05:43:21,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 05:43:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-12 05:43:21,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026707206] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 05:43:21,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 05:43:21,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14, 6] total 19 [2022-07-12 05:43:21,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910081369] [2022-07-12 05:43:21,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:43:21,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:43:21,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:43:21,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:43:21,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-07-12 05:43:21,652 INFO L87 Difference]: Start difference. First operand 23044 states and 40654 transitions. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 6 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-12 05:43:30,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:43:30,073 INFO L93 Difference]: Finished difference Result 75052 states and 143937 transitions. [2022-07-12 05:43:30,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:43:30,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 6 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 181 [2022-07-12 05:43:30,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:43:30,397 INFO L225 Difference]: With dead ends: 75052 [2022-07-12 05:43:30,397 INFO L226 Difference]: Without dead ends: 52147 [2022-07-12 05:43:30,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 392 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-07-12 05:43:30,588 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 2700 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2775 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 2974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:43:30,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2775 Valid, 3177 Invalid, 2974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 05:43:30,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52147 states. [2022-07-12 05:43:37,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52147 to 52090. [2022-07-12 05:43:37,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52090 states, 40255 states have (on average 1.5397590361445783) internal successors, (61983), 40948 states have internal predecessors, (61983), 8865 states have call successors, (8865), 2301 states have call predecessors, (8865), 2969 states have return successors, (23488), 9280 states have call predecessors, (23488), 8860 states have call successors, (23488) [2022-07-12 05:43:37,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52090 states to 52090 states and 94336 transitions. [2022-07-12 05:43:37,733 INFO L78 Accepts]: Start accepts. Automaton has 52090 states and 94336 transitions. Word has length 181 [2022-07-12 05:43:37,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:43:37,733 INFO L495 AbstractCegarLoop]: Abstraction has 52090 states and 94336 transitions. [2022-07-12 05:43:37,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 6 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-12 05:43:37,734 INFO L276 IsEmpty]: Start isEmpty. Operand 52090 states and 94336 transitions. [2022-07-12 05:43:37,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-12 05:43:37,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:43:37,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:43:37,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-12 05:43:37,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-12 05:43:37,941 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:43:37,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:43:37,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1577853661, now seen corresponding path program 1 times [2022-07-12 05:43:37,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:43:37,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594635139] [2022-07-12 05:43:37,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:43:37,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:43:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:43:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:43:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:43:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:43:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:43:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:43:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:43:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:43:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:43:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:43:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 05:43:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 05:43:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 05:43:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 05:43:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 05:43:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-12 05:43:38,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:43:38,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594635139] [2022-07-12 05:43:38,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594635139] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:43:38,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478104616] [2022-07-12 05:43:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:43:38,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:43:38,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:43:38,618 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) [2022-07-12 05:43:38,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-12 05:43:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:43:38,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 2201 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 05:43:38,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:43:39,077 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 05:43:39,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 05:43:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-12 05:43:39,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478104616] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 05:43:39,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 05:43:39,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15, 6] total 20 [2022-07-12 05:43:39,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593039448] [2022-07-12 05:43:39,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:43:39,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:43:39,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:43:39,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:43:39,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-07-12 05:43:39,458 INFO L87 Difference]: Start difference. First operand 52090 states and 94336 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 6 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-12 05:43:52,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:43:52,402 INFO L93 Difference]: Finished difference Result 126971 states and 245744 transitions. [2022-07-12 05:43:52,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:43:52,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 6 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) Word has length 185 [2022-07-12 05:43:52,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:43:53,155 INFO L225 Difference]: With dead ends: 126971 [2022-07-12 05:43:53,155 INFO L226 Difference]: Without dead ends: 79161 [2022-07-12 05:43:53,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 402 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-07-12 05:43:53,433 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 2471 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 2454 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2545 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:43:53,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2545 Valid, 3155 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2454 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 05:43:53,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79161 states.