./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_spec9_product28.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 339ae17141354782861ad14ce1f1515b53735bca35311ebbaf6a68a6022f4172 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:02:21,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:02:21,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:02:21,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:02:21,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:02:21,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:02:21,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:02:21,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:02:21,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:02:21,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:02:21,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:02:21,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:02:21,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:02:21,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:02:21,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:02:21,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:02:21,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:02:21,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:02:21,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:02:21,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:02:21,654 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:02:21,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:02:21,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:02:21,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:02:21,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:02:21,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:02:21,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:02:21,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:02:21,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:02:21,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:02:21,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:02:21,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:02:21,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:02:21,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:02:21,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:02:21,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:02:21,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:02:21,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:02:21,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:02:21,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:02:21,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:02:21,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:02:21,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:02:21,710 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:02:21,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:02:21,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:02:21,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:02:21,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:02:21,713 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:02:21,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:02:21,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:02:21,714 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:02:21,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:02:21,714 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:02:21,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:02:21,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:02:21,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:02:21,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:02:21,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:02:21,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:02:21,716 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:02:21,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:02:21,716 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:02:21,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:02:21,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:02:21,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:02:21,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:02:21,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:02:21,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:02:21,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:02:21,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:02:21,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:02:21,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:02:21,718 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:02:21,719 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:02:21,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:02:21,719 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 339ae17141354782861ad14ce1f1515b53735bca35311ebbaf6a68a6022f4172 [2022-07-19 17:02:21,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:02:21,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:02:21,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:02:21,951 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:02:21,951 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:02:21,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c [2022-07-19 17:02:22,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4f22493/510b2077653a4b738892d35d57bae5a0/FLAG5f205fa9d [2022-07-19 17:02:22,578 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:02:22,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c [2022-07-19 17:02:22,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4f22493/510b2077653a4b738892d35d57bae5a0/FLAG5f205fa9d [2022-07-19 17:02:23,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4f22493/510b2077653a4b738892d35d57bae5a0 [2022-07-19 17:02:23,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:02:23,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:02:23,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:02:23,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:02:23,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:02:23,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:02:23" (1/1) ... [2022-07-19 17:02:23,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a7e2a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:23, skipping insertion in model container [2022-07-19 17:02:23,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:02:23" (1/1) ... [2022-07-19 17:02:23,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:02:23,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:02:23,594 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_spec9_product28.cil.c[73050,73063] [2022-07-19 17:02:23,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:02:23,611 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:02:23,695 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_spec9_product28.cil.c[73050,73063] [2022-07-19 17:02:23,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:02:23,725 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:02:23,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:23 WrapperNode [2022-07-19 17:02:23,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:02:23,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:02:23,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:02:23,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:02:23,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:23" (1/1) ... [2022-07-19 17:02:23,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:23" (1/1) ... [2022-07-19 17:02:23,822 INFO L137 Inliner]: procedures = 97, calls = 345, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 1131 [2022-07-19 17:02:23,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:02:23,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:02:23,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:02:23,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:02:23,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:23" (1/1) ... [2022-07-19 17:02:23,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:23" (1/1) ... [2022-07-19 17:02:23,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:23" (1/1) ... [2022-07-19 17:02:23,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:23" (1/1) ... [2022-07-19 17:02:23,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:23" (1/1) ... [2022-07-19 17:02:23,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:23" (1/1) ... [2022-07-19 17:02:23,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:23" (1/1) ... [2022-07-19 17:02:23,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:02:23,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:02:23,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:02:23,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:02:23,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:23" (1/1) ... [2022-07-19 17:02:23,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:02:23,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:02:23,969 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) [2022-07-19 17:02:23,993 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 [2022-07-19 17:02:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-19 17:02:24,016 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-19 17:02:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-19 17:02:24,017 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-19 17:02:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-19 17:02:24,017 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-19 17:02:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-19 17:02:24,017 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-19 17:02:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-19 17:02:24,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-19 17:02:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-19 17:02:24,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-19 17:02:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-19 17:02:24,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-19 17:02:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-19 17:02:24,018 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-19 17:02:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-19 17:02:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-19 17:02:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:02:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-19 17:02:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-19 17:02:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-19 17:02:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-19 17:02:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-19 17:02:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-19 17:02:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-19 17:02:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-19 17:02:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-19 17:02:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-19 17:02:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-19 17:02:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-19 17:02:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-19 17:02:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-19 17:02:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-19 17:02:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-19 17:02:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-07-19 17:02:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-07-19 17:02:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-19 17:02:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-19 17:02:24,022 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-19 17:02:24,022 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-19 17:02:24,022 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-19 17:02:24,023 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-19 17:02:24,023 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-19 17:02:24,023 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-19 17:02:24,023 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2022-07-19 17:02:24,023 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2022-07-19 17:02:24,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:02:24,024 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-19 17:02:24,024 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-19 17:02:24,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:02:24,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:02:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-19 17:02:24,025 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-19 17:02:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-07-19 17:02:24,026 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-07-19 17:02:24,215 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:02:24,216 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:02:25,018 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:02:25,028 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:02:25,029 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 17:02:25,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:02:25 BoogieIcfgContainer [2022-07-19 17:02:25,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:02:25,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:02:25,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:02:25,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:02:25,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:02:23" (1/3) ... [2022-07-19 17:02:25,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ac4a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:02:25, skipping insertion in model container [2022-07-19 17:02:25,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:23" (2/3) ... [2022-07-19 17:02:25,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ac4a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:02:25, skipping insertion in model container [2022-07-19 17:02:25,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:02:25" (3/3) ... [2022-07-19 17:02:25,063 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product28.cil.c [2022-07-19 17:02:25,077 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:02:25,078 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:02:25,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:02:25,160 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@545199f5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@208ae306 [2022-07-19 17:02:25,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:02:25,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 573 states, 448 states have (on average 1.6875) internal successors, (756), 471 states have internal predecessors, (756), 97 states have call successors, (97), 26 states have call predecessors, (97), 26 states have return successors, (97), 90 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-19 17:02:25,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-19 17:02:25,193 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:25,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:25,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:25,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:25,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2105504779, now seen corresponding path program 1 times [2022-07-19 17:02:25,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:25,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989094506] [2022-07-19 17:02:25,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:25,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:25,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:25,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:25,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:02:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:25,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 17:02:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:25,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:25,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:25,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:02:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:25,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:02:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:25,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:25,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:25,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989094506] [2022-07-19 17:02:25,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989094506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:25,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:25,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:02:25,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785656486] [2022-07-19 17:02:25,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:25,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:02:25,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:26,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:02:26,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:02:26,020 INFO L87 Difference]: Start difference. First operand has 573 states, 448 states have (on average 1.6875) internal successors, (756), 471 states have internal predecessors, (756), 97 states have call successors, (97), 26 states have call predecessors, (97), 26 states have return successors, (97), 90 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:02:30,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:30,435 INFO L93 Difference]: Finished difference Result 1280 states and 2154 transitions. [2022-07-19 17:02:30,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:02:30,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-07-19 17:02:30,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:30,464 INFO L225 Difference]: With dead ends: 1280 [2022-07-19 17:02:30,464 INFO L226 Difference]: Without dead ends: 719 [2022-07-19 17:02:30,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:02:30,478 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 1143 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 2455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 2172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:30,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 1692 Invalid, 2455 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [283 Valid, 2172 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-19 17:02:30,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-07-19 17:02:30,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 565. [2022-07-19 17:02:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6832579185520362) internal successors, (744), 463 states have internal predecessors, (744), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2022-07-19 17:02:30,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 933 transitions. [2022-07-19 17:02:30,631 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 933 transitions. Word has length 62 [2022-07-19 17:02:30,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:30,631 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 933 transitions. [2022-07-19 17:02:30,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:02:30,632 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 933 transitions. [2022-07-19 17:02:30,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 17:02:30,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:30,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:30,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 17:02:30,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:30,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:30,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1663681637, now seen corresponding path program 1 times [2022-07-19 17:02:30,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:30,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643513106] [2022-07-19 17:02:30,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:30,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 17:02:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:02:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:02:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:30,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:30,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643513106] [2022-07-19 17:02:30,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643513106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:30,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:30,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:02:30,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546048017] [2022-07-19 17:02:30,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:30,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:02:30,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:30,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:02:30,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:02:30,954 INFO L87 Difference]: Start difference. First operand 565 states and 933 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:02:35,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:35,194 INFO L93 Difference]: Finished difference Result 1266 states and 2120 transitions. [2022-07-19 17:02:35,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:02:35,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2022-07-19 17:02:35,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:35,202 INFO L225 Difference]: With dead ends: 1266 [2022-07-19 17:02:35,202 INFO L226 Difference]: Without dead ends: 719 [2022-07-19 17:02:35,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:02:35,206 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 683 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 2490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:35,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 1651 Invalid, 2490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-19 17:02:35,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-07-19 17:02:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 565. [2022-07-19 17:02:35,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6809954751131222) internal successors, (743), 463 states have internal predecessors, (743), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2022-07-19 17:02:35,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 932 transitions. [2022-07-19 17:02:35,277 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 932 transitions. Word has length 65 [2022-07-19 17:02:35,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:35,278 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 932 transitions. [2022-07-19 17:02:35,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:02:35,279 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 932 transitions. [2022-07-19 17:02:35,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 17:02:35,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:35,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:35,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 17:02:35,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:35,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:35,283 INFO L85 PathProgramCache]: Analyzing trace with hash 645158875, now seen corresponding path program 1 times [2022-07-19 17:02:35,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:35,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969302395] [2022-07-19 17:02:35,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:35,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:35,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:35,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:35,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:02:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:35,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 17:02:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:35,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:35,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:35,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:02:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:35,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:02:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:35,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:35,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969302395] [2022-07-19 17:02:35,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969302395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:35,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:35,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:02:35,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251830927] [2022-07-19 17:02:35,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:35,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:02:35,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:35,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:02:35,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:02:35,631 INFO L87 Difference]: Start difference. First operand 565 states and 932 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:02:38,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:38,947 INFO L93 Difference]: Finished difference Result 1266 states and 2119 transitions. [2022-07-19 17:02:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:02:38,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2022-07-19 17:02:38,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:38,954 INFO L225 Difference]: With dead ends: 1266 [2022-07-19 17:02:38,954 INFO L226 Difference]: Without dead ends: 719 [2022-07-19 17:02:38,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:02:38,958 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 1141 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 2168 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 2459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:38,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 1634 Invalid, 2459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2168 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 17:02:38,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-07-19 17:02:39,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 565. [2022-07-19 17:02:39,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6787330316742082) internal successors, (742), 463 states have internal predecessors, (742), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2022-07-19 17:02:39,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 931 transitions. [2022-07-19 17:02:39,011 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 931 transitions. Word has length 66 [2022-07-19 17:02:39,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:39,011 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 931 transitions. [2022-07-19 17:02:39,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:02:39,012 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 931 transitions. [2022-07-19 17:02:39,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 17:02:39,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:39,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:39,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 17:02:39,014 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:39,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:39,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2082562911, now seen corresponding path program 1 times [2022-07-19 17:02:39,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:39,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25312567] [2022-07-19 17:02:39,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:39,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:39,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:39,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:39,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:02:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:39,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:02:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:39,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:39,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:39,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:02:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:39,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:02:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:39,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:39,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25312567] [2022-07-19 17:02:39,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25312567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:39,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:39,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:02:39,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108951683] [2022-07-19 17:02:39,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:39,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:02:39,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:39,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:02:39,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:02:39,319 INFO L87 Difference]: Start difference. First operand 565 states and 931 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:02:42,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:42,973 INFO L93 Difference]: Finished difference Result 1266 states and 2118 transitions. [2022-07-19 17:02:42,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:02:42,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-07-19 17:02:42,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:42,979 INFO L225 Difference]: With dead ends: 1266 [2022-07-19 17:02:42,979 INFO L226 Difference]: Without dead ends: 719 [2022-07-19 17:02:42,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:02:42,983 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 1136 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 2459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:42,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1219 Valid, 1638 Invalid, 2459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-19 17:02:42,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-07-19 17:02:43,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 565. [2022-07-19 17:02:43,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6764705882352942) internal successors, (741), 463 states have internal predecessors, (741), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2022-07-19 17:02:43,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 930 transitions. [2022-07-19 17:02:43,032 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 930 transitions. Word has length 67 [2022-07-19 17:02:43,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:43,032 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 930 transitions. [2022-07-19 17:02:43,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:02:43,033 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 930 transitions. [2022-07-19 17:02:43,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 17:02:43,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:43,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:43,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 17:02:43,034 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:43,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:43,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1960879593, now seen corresponding path program 1 times [2022-07-19 17:02:43,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:43,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516213599] [2022-07-19 17:02:43,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:43,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:43,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:43,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:43,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 17:02:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:43,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 17:02:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:43,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:43,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:43,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:02:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:43,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:02:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:43,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:43,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:43,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516213599] [2022-07-19 17:02:43,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516213599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:43,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:43,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:02:43,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083652438] [2022-07-19 17:02:43,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:43,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:02:43,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:43,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:02:43,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:02:43,424 INFO L87 Difference]: Start difference. First operand 565 states and 930 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:02:48,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:48,105 INFO L93 Difference]: Finished difference Result 1278 states and 2141 transitions. [2022-07-19 17:02:48,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 17:02:48,106 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-07-19 17:02:48,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:48,111 INFO L225 Difference]: With dead ends: 1278 [2022-07-19 17:02:48,111 INFO L226 Difference]: Without dead ends: 731 [2022-07-19 17:02:48,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:02:48,114 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 728 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 4718 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 2536 SdHoareTripleChecker+Invalid, 4869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 4718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:48,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 2536 Invalid, 4869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 4718 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-19 17:02:48,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2022-07-19 17:02:48,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 569. [2022-07-19 17:02:48,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6696629213483145) internal successors, (743), 466 states have internal predecessors, (743), 97 states have call successors, (97), 26 states have call predecessors, (97), 26 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-07-19 17:02:48,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 934 transitions. [2022-07-19 17:02:48,164 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 934 transitions. Word has length 68 [2022-07-19 17:02:48,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:48,164 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 934 transitions. [2022-07-19 17:02:48,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:02:48,165 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 934 transitions. [2022-07-19 17:02:48,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-19 17:02:48,166 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:48,166 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:48,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 17:02:48,167 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:48,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:48,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1053687398, now seen corresponding path program 1 times [2022-07-19 17:02:48,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:48,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993159296] [2022-07-19 17:02:48,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:48,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:48,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:48,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:48,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:02:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:48,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:02:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:48,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:48,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:48,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:02:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:48,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:02:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:48,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 17:02:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 17:02:48,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:48,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993159296] [2022-07-19 17:02:48,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993159296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:48,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:48,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 17:02:48,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715377495] [2022-07-19 17:02:48,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:48,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 17:02:48,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:48,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 17:02:48,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:02:48,529 INFO L87 Difference]: Start difference. First operand 569 states and 934 transitions. Second operand has 11 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 17:02:53,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:53,752 INFO L93 Difference]: Finished difference Result 1253 states and 2080 transitions. [2022-07-19 17:02:53,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:02:53,753 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 75 [2022-07-19 17:02:53,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:53,758 INFO L225 Difference]: With dead ends: 1253 [2022-07-19 17:02:53,758 INFO L226 Difference]: Without dead ends: 751 [2022-07-19 17:02:53,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-07-19 17:02:53,764 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 1269 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 6113 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 6414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 6113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:53,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 3111 Invalid, 6414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 6113 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-19 17:02:53,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-07-19 17:02:53,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 582. [2022-07-19 17:02:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 455 states have (on average 1.665934065934066) internal successors, (758), 478 states have internal predecessors, (758), 98 states have call successors, (98), 26 states have call predecessors, (98), 28 states have return successors, (97), 91 states have call predecessors, (97), 93 states have call successors, (97) [2022-07-19 17:02:53,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 953 transitions. [2022-07-19 17:02:53,819 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 953 transitions. Word has length 75 [2022-07-19 17:02:53,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:53,820 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 953 transitions. [2022-07-19 17:02:53,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 17:02:53,820 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 953 transitions. [2022-07-19 17:02:53,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-19 17:02:53,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:53,822 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:53,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 17:02:53,823 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:53,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:53,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1310660793, now seen corresponding path program 1 times [2022-07-19 17:02:53,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:53,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663972437] [2022-07-19 17:02:53,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:53,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:53,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:53,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:53,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:02:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:54,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:02:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:54,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:54,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:54,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:02:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:54,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:02:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:54,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 17:02:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:54,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 17:02:54,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:54,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663972437] [2022-07-19 17:02:54,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663972437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:54,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:54,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 17:02:54,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021950818] [2022-07-19 17:02:54,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:54,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 17:02:54,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:54,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 17:02:54,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:02:54,213 INFO L87 Difference]: Start difference. First operand 582 states and 953 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 17:03:02,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:02,099 INFO L93 Difference]: Finished difference Result 1598 states and 2652 transitions. [2022-07-19 17:03:02,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-19 17:03:02,100 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 75 [2022-07-19 17:03:02,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:02,106 INFO L225 Difference]: With dead ends: 1598 [2022-07-19 17:03:02,106 INFO L226 Difference]: Without dead ends: 1078 [2022-07-19 17:03:02,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2022-07-19 17:03:02,110 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 1869 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 8751 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 9259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 8751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:02,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 3019 Invalid, 9259 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [508 Valid, 8751 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-07-19 17:03:02,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2022-07-19 17:03:02,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 828. [2022-07-19 17:03:02,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 649 states have (on average 1.6394453004622496) internal successors, (1064), 672 states have internal predecessors, (1064), 136 states have call successors, (136), 39 states have call predecessors, (136), 42 states have return successors, (141), 130 states have call predecessors, (141), 131 states have call successors, (141) [2022-07-19 17:03:02,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1341 transitions. [2022-07-19 17:03:02,202 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1341 transitions. Word has length 75 [2022-07-19 17:03:02,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:02,202 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1341 transitions. [2022-07-19 17:03:02,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 17:03:02,203 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1341 transitions. [2022-07-19 17:03:02,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-19 17:03:02,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:02,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:03:02,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 17:03:02,205 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:02,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:02,205 INFO L85 PathProgramCache]: Analyzing trace with hash -906958808, now seen corresponding path program 1 times [2022-07-19 17:03:02,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:02,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142121892] [2022-07-19 17:03:02,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:02,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:02,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:02,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:02,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:02,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 17:03:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:02,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:02,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:02,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:03:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:02,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:03:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:02,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:03:02,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:03:02,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142121892] [2022-07-19 17:03:02,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142121892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:03:02,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:03:02,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:03:02,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009454752] [2022-07-19 17:03:02,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:03:02,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:03:02,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:03:02,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:03:02,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:03:02,545 INFO L87 Difference]: Start difference. First operand 828 states and 1341 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:03:05,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:05,968 INFO L93 Difference]: Finished difference Result 1791 states and 2939 transitions. [2022-07-19 17:03:05,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:03:05,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-07-19 17:03:05,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:05,974 INFO L225 Difference]: With dead ends: 1791 [2022-07-19 17:03:05,974 INFO L226 Difference]: Without dead ends: 1025 [2022-07-19 17:03:05,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:03:05,978 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 739 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 2465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:05,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 1605 Invalid, 2465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 17:03:05,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2022-07-19 17:03:06,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 828. [2022-07-19 17:03:06,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 649 states have (on average 1.6317411402157165) internal successors, (1059), 672 states have internal predecessors, (1059), 136 states have call successors, (136), 39 states have call predecessors, (136), 42 states have return successors, (141), 130 states have call predecessors, (141), 131 states have call successors, (141) [2022-07-19 17:03:06,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1336 transitions. [2022-07-19 17:03:06,088 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1336 transitions. Word has length 75 [2022-07-19 17:03:06,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:06,088 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1336 transitions. [2022-07-19 17:03:06,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:03:06,089 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1336 transitions. [2022-07-19 17:03:06,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-19 17:03:06,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:06,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:03:06,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 17:03:06,091 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:06,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:06,091 INFO L85 PathProgramCache]: Analyzing trace with hash 635775497, now seen corresponding path program 1 times [2022-07-19 17:03:06,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:06,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573614462] [2022-07-19 17:03:06,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:06,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:06,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:06,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:06,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:06,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:03:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:06,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:06,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:06,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:03:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:06,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:03:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:06,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:03:06,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:03:06,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573614462] [2022-07-19 17:03:06,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573614462] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:03:06,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:03:06,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:03:06,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595018862] [2022-07-19 17:03:06,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:03:06,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:03:06,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:03:06,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:03:06,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:03:06,411 INFO L87 Difference]: Start difference. First operand 828 states and 1336 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:03:09,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:09,545 INFO L93 Difference]: Finished difference Result 1791 states and 2934 transitions. [2022-07-19 17:03:09,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:03:09,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2022-07-19 17:03:09,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:09,550 INFO L225 Difference]: With dead ends: 1791 [2022-07-19 17:03:09,551 INFO L226 Difference]: Without dead ends: 1025 [2022-07-19 17:03:09,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:03:09,554 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 1189 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 2413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:09,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 1596 Invalid, 2413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 17:03:09,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2022-07-19 17:03:09,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 828. [2022-07-19 17:03:09,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 649 states have (on average 1.6240369799691834) internal successors, (1054), 672 states have internal predecessors, (1054), 136 states have call successors, (136), 39 states have call predecessors, (136), 42 states have return successors, (141), 130 states have call predecessors, (141), 131 states have call successors, (141) [2022-07-19 17:03:09,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1331 transitions. [2022-07-19 17:03:09,651 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1331 transitions. Word has length 76 [2022-07-19 17:03:09,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:09,652 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1331 transitions. [2022-07-19 17:03:09,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:03:09,652 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1331 transitions. [2022-07-19 17:03:09,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 17:03:09,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:09,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:03:09,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 17:03:09,654 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:09,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:09,654 INFO L85 PathProgramCache]: Analyzing trace with hash 20276675, now seen corresponding path program 1 times [2022-07-19 17:03:09,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:09,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249694837] [2022-07-19 17:03:09,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:09,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:09,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:09,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:09,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:09,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:03:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:09,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:09,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:09,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:03:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:09,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:03:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:10,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:03:10,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:03:10,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249694837] [2022-07-19 17:03:10,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249694837] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:03:10,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:03:10,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:03:10,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787556214] [2022-07-19 17:03:10,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:03:10,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:03:10,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:03:10,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:03:10,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:03:10,004 INFO L87 Difference]: Start difference. First operand 828 states and 1331 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:03:14,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:14,383 INFO L93 Difference]: Finished difference Result 1783 states and 2911 transitions. [2022-07-19 17:03:14,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:03:14,383 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 77 [2022-07-19 17:03:14,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:14,388 INFO L225 Difference]: With dead ends: 1783 [2022-07-19 17:03:14,388 INFO L226 Difference]: Without dead ends: 1032 [2022-07-19 17:03:14,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:03:14,392 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 1206 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 4464 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 4760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 4464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:14,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 2549 Invalid, 4760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 4464 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 17:03:14,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2022-07-19 17:03:14,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 828. [2022-07-19 17:03:14,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 649 states have (on average 1.6224961479198767) internal successors, (1053), 672 states have internal predecessors, (1053), 136 states have call successors, (136), 39 states have call predecessors, (136), 42 states have return successors, (141), 130 states have call predecessors, (141), 131 states have call successors, (141) [2022-07-19 17:03:14,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1330 transitions. [2022-07-19 17:03:14,494 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1330 transitions. Word has length 77 [2022-07-19 17:03:14,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:14,494 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1330 transitions. [2022-07-19 17:03:14,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:03:14,495 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1330 transitions. [2022-07-19 17:03:14,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 17:03:14,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:14,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:03:14,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 17:03:14,498 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:14,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:14,498 INFO L85 PathProgramCache]: Analyzing trace with hash 13198051, now seen corresponding path program 1 times [2022-07-19 17:03:14,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:14,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962142042] [2022-07-19 17:03:14,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:14,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:14,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:14,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:14,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:14,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:03:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:14,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:14,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:14,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:03:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:14,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:03:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:03:14,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:03:14,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962142042] [2022-07-19 17:03:14,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962142042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:03:14,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:03:14,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:03:14,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21570755] [2022-07-19 17:03:14,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:03:14,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:03:14,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:03:14,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:03:14,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:03:14,799 INFO L87 Difference]: Start difference. First operand 828 states and 1330 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:03:18,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:18,165 INFO L93 Difference]: Finished difference Result 1791 states and 2926 transitions. [2022-07-19 17:03:18,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:03:18,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2022-07-19 17:03:18,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:18,170 INFO L225 Difference]: With dead ends: 1791 [2022-07-19 17:03:18,170 INFO L226 Difference]: Without dead ends: 1025 [2022-07-19 17:03:18,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:03:18,173 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 747 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 2413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:18,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 1594 Invalid, 2413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 17:03:18,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2022-07-19 17:03:18,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 828. [2022-07-19 17:03:18,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 649 states have (on average 1.6147919876733436) internal successors, (1048), 672 states have internal predecessors, (1048), 136 states have call successors, (136), 39 states have call predecessors, (136), 42 states have return successors, (141), 130 states have call predecessors, (141), 131 states have call successors, (141) [2022-07-19 17:03:18,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1325 transitions. [2022-07-19 17:03:18,276 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1325 transitions. Word has length 77 [2022-07-19 17:03:18,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:18,277 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1325 transitions. [2022-07-19 17:03:18,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:03:18,277 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1325 transitions. [2022-07-19 17:03:18,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-19 17:03:18,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:18,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:03:18,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 17:03:18,279 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:18,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:18,279 INFO L85 PathProgramCache]: Analyzing trace with hash 583075782, now seen corresponding path program 1 times [2022-07-19 17:03:18,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:18,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991727243] [2022-07-19 17:03:18,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:18,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:18,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:18,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:18,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:18,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:03:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:18,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:18,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:18,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:03:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:18,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:03:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:03:18,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:03:18,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991727243] [2022-07-19 17:03:18,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991727243] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:03:18,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:03:18,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:03:18,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131311102] [2022-07-19 17:03:18,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:03:18,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:03:18,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:03:18,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:03:18,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:03:18,645 INFO L87 Difference]: Start difference. First operand 828 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:03:23,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:23,516 INFO L93 Difference]: Finished difference Result 1804 states and 2936 transitions. [2022-07-19 17:03:23,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:03:23,517 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 78 [2022-07-19 17:03:23,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:23,521 INFO L225 Difference]: With dead ends: 1804 [2022-07-19 17:03:23,521 INFO L226 Difference]: Without dead ends: 1050 [2022-07-19 17:03:23,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:03:23,524 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 752 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 4541 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 4694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 4541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:23,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 2523 Invalid, 4694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 4541 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-19 17:03:23,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2022-07-19 17:03:23,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 831. [2022-07-19 17:03:23,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 652 states have (on average 1.6104294478527608) internal successors, (1050), 675 states have internal predecessors, (1050), 136 states have call successors, (136), 39 states have call predecessors, (136), 42 states have return successors, (141), 130 states have call predecessors, (141), 131 states have call successors, (141) [2022-07-19 17:03:23,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1327 transitions. [2022-07-19 17:03:23,643 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1327 transitions. Word has length 78 [2022-07-19 17:03:23,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:23,643 INFO L495 AbstractCegarLoop]: Abstraction has 831 states and 1327 transitions. [2022-07-19 17:03:23,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:03:23,644 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1327 transitions. [2022-07-19 17:03:23,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-19 17:03:23,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:23,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:03:23,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 17:03:23,645 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:23,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:23,646 INFO L85 PathProgramCache]: Analyzing trace with hash 985433060, now seen corresponding path program 1 times [2022-07-19 17:03:23,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:23,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366115719] [2022-07-19 17:03:23,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:23,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:23,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:23,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:23,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:23,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:03:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:23,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:23,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:23,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:03:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:23,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:03:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:23,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:03:23,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:03:23,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366115719] [2022-07-19 17:03:23,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366115719] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:03:23,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:03:23,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:03:23,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654271619] [2022-07-19 17:03:23,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:03:23,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:03:23,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:03:23,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:03:23,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:03:23,952 INFO L87 Difference]: Start difference. First operand 831 states and 1327 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:03:27,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:27,210 INFO L93 Difference]: Finished difference Result 1800 states and 2927 transitions. [2022-07-19 17:03:27,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:03:27,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2022-07-19 17:03:27,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:27,216 INFO L225 Difference]: With dead ends: 1800 [2022-07-19 17:03:27,216 INFO L226 Difference]: Without dead ends: 1031 [2022-07-19 17:03:27,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:03:27,219 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 1196 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:27,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 1588 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 2080 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 17:03:27,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-07-19 17:03:27,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 831. [2022-07-19 17:03:27,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 652 states have (on average 1.602760736196319) internal successors, (1045), 675 states have internal predecessors, (1045), 136 states have call successors, (136), 39 states have call predecessors, (136), 42 states have return successors, (141), 130 states have call predecessors, (141), 131 states have call successors, (141) [2022-07-19 17:03:27,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1322 transitions. [2022-07-19 17:03:27,314 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1322 transitions. Word has length 78 [2022-07-19 17:03:27,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:27,314 INFO L495 AbstractCegarLoop]: Abstraction has 831 states and 1322 transitions. [2022-07-19 17:03:27,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:03:27,315 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1322 transitions. [2022-07-19 17:03:27,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 17:03:27,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:27,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:03:27,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 17:03:27,316 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:27,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:27,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1402916734, now seen corresponding path program 1 times [2022-07-19 17:03:27,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:27,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047626989] [2022-07-19 17:03:27,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:27,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:27,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:27,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:27,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:27,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 17:03:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:27,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:27,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:03:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:27,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:03:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:27,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:03:27,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:03:27,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047626989] [2022-07-19 17:03:27,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047626989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:03:27,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:03:27,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:03:27,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497568008] [2022-07-19 17:03:27,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:03:27,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:03:27,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:03:27,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:03:27,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:03:27,669 INFO L87 Difference]: Start difference. First operand 831 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:03:32,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:32,217 INFO L93 Difference]: Finished difference Result 1810 states and 2933 transitions. [2022-07-19 17:03:32,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:03:32,217 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 79 [2022-07-19 17:03:32,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:32,222 INFO L225 Difference]: With dead ends: 1810 [2022-07-19 17:03:32,222 INFO L226 Difference]: Without dead ends: 1056 [2022-07-19 17:03:32,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:03:32,225 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 1204 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 4366 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 4667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 4366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:32,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1288 Valid, 2513 Invalid, 4667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 4366 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-19 17:03:32,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2022-07-19 17:03:32,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 835. [2022-07-19 17:03:32,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 656 states have (on average 1.5975609756097562) internal successors, (1048), 679 states have internal predecessors, (1048), 136 states have call successors, (136), 39 states have call predecessors, (136), 42 states have return successors, (141), 130 states have call predecessors, (141), 131 states have call successors, (141) [2022-07-19 17:03:32,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1325 transitions. [2022-07-19 17:03:32,316 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1325 transitions. Word has length 79 [2022-07-19 17:03:32,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:32,316 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 1325 transitions. [2022-07-19 17:03:32,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:03:32,317 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1325 transitions. [2022-07-19 17:03:32,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 17:03:32,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:32,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:03:32,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 17:03:32,318 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:32,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:32,319 INFO L85 PathProgramCache]: Analyzing trace with hash -142753378, now seen corresponding path program 1 times [2022-07-19 17:03:32,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:32,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933242450] [2022-07-19 17:03:32,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:32,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 17:03:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:03:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:03:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:03:32,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:03:32,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933242450] [2022-07-19 17:03:32,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933242450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:03:32,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:03:32,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:03:32,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768449118] [2022-07-19 17:03:32,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:03:32,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:03:32,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:03:32,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:03:32,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:03:32,636 INFO L87 Difference]: Start difference. First operand 835 states and 1325 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:03:36,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:36,199 INFO L93 Difference]: Finished difference Result 1848 states and 2972 transitions. [2022-07-19 17:03:36,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:03:36,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2022-07-19 17:03:36,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:36,204 INFO L225 Difference]: With dead ends: 1848 [2022-07-19 17:03:36,204 INFO L226 Difference]: Without dead ends: 1011 [2022-07-19 17:03:36,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:03:36,206 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 669 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:36,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 1623 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 17:03:36,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2022-07-19 17:03:36,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 816. [2022-07-19 17:03:36,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 640 states have (on average 1.603125) internal successors, (1026), 661 states have internal predecessors, (1026), 135 states have call successors, (135), 39 states have call predecessors, (135), 40 states have return successors, (138), 129 states have call predecessors, (138), 130 states have call successors, (138) [2022-07-19 17:03:36,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1299 transitions. [2022-07-19 17:03:36,318 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1299 transitions. Word has length 79 [2022-07-19 17:03:36,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:36,318 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1299 transitions. [2022-07-19 17:03:36,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:03:36,318 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1299 transitions. [2022-07-19 17:03:36,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-19 17:03:36,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:36,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:03:36,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 17:03:36,320 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:36,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:36,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1601120289, now seen corresponding path program 1 times [2022-07-19 17:03:36,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:36,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007290688] [2022-07-19 17:03:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:36,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:36,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:36,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:36,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:36,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 17:03:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:36,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:36,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:36,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:03:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:36,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:03:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:36,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:03:36,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:03:36,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007290688] [2022-07-19 17:03:36,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007290688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:03:36,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:03:36,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:03:36,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373004934] [2022-07-19 17:03:36,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:03:36,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:03:36,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:03:36,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:03:36,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:03:36,635 INFO L87 Difference]: Start difference. First operand 816 states and 1299 transitions. Second operand has 9 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:03:41,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:41,128 INFO L93 Difference]: Finished difference Result 1783 states and 2887 transitions. [2022-07-19 17:03:41,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:03:41,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 80 [2022-07-19 17:03:41,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:41,132 INFO L225 Difference]: With dead ends: 1783 [2022-07-19 17:03:41,132 INFO L226 Difference]: Without dead ends: 1032 [2022-07-19 17:03:41,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:03:41,134 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 1168 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 4299 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 4592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 4299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:41,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1251 Valid, 2491 Invalid, 4592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 4299 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 17:03:41,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2022-07-19 17:03:41,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 821. [2022-07-19 17:03:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 645 states have (on average 1.5984496124031007) internal successors, (1031), 666 states have internal predecessors, (1031), 135 states have call successors, (135), 39 states have call predecessors, (135), 40 states have return successors, (138), 129 states have call predecessors, (138), 130 states have call successors, (138) [2022-07-19 17:03:41,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1304 transitions. [2022-07-19 17:03:41,244 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1304 transitions. Word has length 80 [2022-07-19 17:03:41,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:41,244 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1304 transitions. [2022-07-19 17:03:41,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:03:41,244 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1304 transitions. [2022-07-19 17:03:41,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-19 17:03:41,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:41,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:03:41,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 17:03:41,246 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:41,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:41,247 INFO L85 PathProgramCache]: Analyzing trace with hash 923663657, now seen corresponding path program 1 times [2022-07-19 17:03:41,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:41,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091941580] [2022-07-19 17:03:41,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:41,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:03:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:03:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:03:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:03:41,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:03:41,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091941580] [2022-07-19 17:03:41,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091941580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:03:41,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:03:41,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:03:41,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623166561] [2022-07-19 17:03:41,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:03:41,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:03:41,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:03:41,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:03:41,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:03:41,600 INFO L87 Difference]: Start difference. First operand 821 states and 1304 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-19 17:03:48,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:48,469 INFO L93 Difference]: Finished difference Result 2859 states and 4725 transitions. [2022-07-19 17:03:48,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 17:03:48,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 81 [2022-07-19 17:03:48,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:48,477 INFO L225 Difference]: With dead ends: 2859 [2022-07-19 17:03:48,478 INFO L226 Difference]: Without dead ends: 2117 [2022-07-19 17:03:48,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:03:48,480 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 4304 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 3167 mSolverCounterSat, 1264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4390 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 4431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1264 IncrementalHoareTripleChecker+Valid, 3167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:48,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4390 Valid, 1958 Invalid, 4431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1264 Valid, 3167 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-07-19 17:03:48,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2022-07-19 17:03:48,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 1572. [2022-07-19 17:03:48,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1236 states have (on average 1.6189320388349515) internal successors, (2001), 1266 states have internal predecessors, (2001), 257 states have call successors, (257), 72 states have call predecessors, (257), 78 states have return successors, (277), 246 states have call predecessors, (277), 252 states have call successors, (277) [2022-07-19 17:03:48,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2535 transitions. [2022-07-19 17:03:48,722 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2535 transitions. Word has length 81 [2022-07-19 17:03:48,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:48,723 INFO L495 AbstractCegarLoop]: Abstraction has 1572 states and 2535 transitions. [2022-07-19 17:03:48,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-19 17:03:48,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2535 transitions. [2022-07-19 17:03:48,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 17:03:48,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:48,730 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:03:48,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 17:03:48,730 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:48,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:48,731 INFO L85 PathProgramCache]: Analyzing trace with hash -824116019, now seen corresponding path program 1 times [2022-07-19 17:03:48,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:48,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325615888] [2022-07-19 17:03:48,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:48,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:48,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:48,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:48,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:49,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:03:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:49,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:49,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:49,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:49,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:49,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:49,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 17:03:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:49,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:03:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:49,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:49,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:49,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:03:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:49,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 17:03:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:49,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 17:03:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 17:03:49,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:03:49,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325615888] [2022-07-19 17:03:49,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325615888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:03:49,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:03:49,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-19 17:03:49,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549388062] [2022-07-19 17:03:49,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:03:49,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 17:03:49,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:03:49,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 17:03:49,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:03:49,380 INFO L87 Difference]: Start difference. First operand 1572 states and 2535 transitions. Second operand has 16 states, 16 states have (on average 5.8125) internal successors, (93), 9 states have internal predecessors, (93), 4 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-19 17:03:59,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:59,182 INFO L93 Difference]: Finished difference Result 4044 states and 6898 transitions. [2022-07-19 17:03:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 17:03:59,183 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.8125) internal successors, (93), 9 states have internal predecessors, (93), 4 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 134 [2022-07-19 17:03:59,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:59,197 INFO L225 Difference]: With dead ends: 4044 [2022-07-19 17:03:59,197 INFO L226 Difference]: Without dead ends: 2550 [2022-07-19 17:03:59,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2022-07-19 17:03:59,205 INFO L413 NwaCegarLoop]: 962 mSDtfsCounter, 3394 mSDsluCounter, 2898 mSDsCounter, 0 mSdLazyCounter, 10076 mSolverCounterSat, 1679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3394 SdHoareTripleChecker+Valid, 3860 SdHoareTripleChecker+Invalid, 11755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1679 IncrementalHoareTripleChecker+Valid, 10076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:59,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3394 Valid, 3860 Invalid, 11755 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1679 Valid, 10076 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-07-19 17:03:59,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2022-07-19 17:03:59,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 1612. [2022-07-19 17:03:59,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1266 states have (on average 1.6042654028436019) internal successors, (2031), 1292 states have internal predecessors, (2031), 257 states have call successors, (257), 72 states have call predecessors, (257), 88 states have return successors, (355), 258 states have call predecessors, (355), 252 states have call successors, (355) [2022-07-19 17:03:59,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2643 transitions. [2022-07-19 17:03:59,475 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2643 transitions. Word has length 134 [2022-07-19 17:03:59,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:59,476 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2643 transitions. [2022-07-19 17:03:59,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.8125) internal successors, (93), 9 states have internal predecessors, (93), 4 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-19 17:03:59,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2643 transitions. [2022-07-19 17:03:59,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-19 17:03:59,480 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:59,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:03:59,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 17:03:59,481 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:59,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:59,482 INFO L85 PathProgramCache]: Analyzing trace with hash 696513703, now seen corresponding path program 1 times [2022-07-19 17:03:59,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:59,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807059292] [2022-07-19 17:03:59,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:59,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:59,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:59,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:59,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:59,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:03:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:59,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:59,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:59,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:59,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:59,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:59,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:03:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:59,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 17:03:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:00,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:00,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:00,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 17:04:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:00,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 17:04:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:00,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 17:04:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:00,054 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 17:04:00,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:04:00,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807059292] [2022-07-19 17:04:00,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807059292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:04:00,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:04:00,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-19 17:04:00,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259197607] [2022-07-19 17:04:00,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:04:00,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 17:04:00,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:04:00,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 17:04:00,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:04:00,057 INFO L87 Difference]: Start difference. First operand 1612 states and 2643 transitions. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 9 states have internal predecessors, (94), 4 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-19 17:04:19,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:04:19,783 INFO L93 Difference]: Finished difference Result 6599 states and 11760 transitions. [2022-07-19 17:04:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-19 17:04:19,784 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 9 states have internal predecessors, (94), 4 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 136 [2022-07-19 17:04:19,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:04:19,812 INFO L225 Difference]: With dead ends: 6599 [2022-07-19 17:04:19,812 INFO L226 Difference]: Without dead ends: 5065 [2022-07-19 17:04:19,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=396, Invalid=1766, Unknown=0, NotChecked=0, Total=2162 [2022-07-19 17:04:19,824 INFO L413 NwaCegarLoop]: 1874 mSDtfsCounter, 6368 mSDsluCounter, 6309 mSDsCounter, 0 mSdLazyCounter, 20084 mSolverCounterSat, 3136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6368 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 23220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3136 IncrementalHoareTripleChecker+Valid, 20084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:04:19,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6368 Valid, 8183 Invalid, 23220 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3136 Valid, 20084 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2022-07-19 17:04:19,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5065 states. [2022-07-19 17:04:20,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5065 to 3731. [2022-07-19 17:04:20,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3731 states, 2838 states have (on average 1.5972515856236786) internal successors, (4533), 2913 states have internal predecessors, (4533), 695 states have call successors, (695), 140 states have call predecessors, (695), 197 states have return successors, (1122), 720 states have call predecessors, (1122), 690 states have call successors, (1122) [2022-07-19 17:04:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 6350 transitions. [2022-07-19 17:04:20,443 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 6350 transitions. Word has length 136 [2022-07-19 17:04:20,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:04:20,444 INFO L495 AbstractCegarLoop]: Abstraction has 3731 states and 6350 transitions. [2022-07-19 17:04:20,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 9 states have internal predecessors, (94), 4 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-19 17:04:20,444 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 6350 transitions. [2022-07-19 17:04:20,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-19 17:04:20,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:04:20,456 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:04:20,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 17:04:20,456 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:04:20,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:04:20,457 INFO L85 PathProgramCache]: Analyzing trace with hash -441227115, now seen corresponding path program 1 times [2022-07-19 17:04:20,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:04:20,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258439932] [2022-07-19 17:04:20,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:04:20,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:04:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:20,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:20,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:20,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:04:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:20,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:04:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:20,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:20,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:20,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:20,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:20,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:20,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:04:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:20,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 17:04:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:20,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:21,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:21,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 17:04:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:21,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 17:04:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:21,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 17:04:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:21,047 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 17:04:21,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:04:21,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258439932] [2022-07-19 17:04:21,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258439932] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:04:21,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725435527] [2022-07-19 17:04:21,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:04:21,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:04:21,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:04:21,050 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) [2022-07-19 17:04:21,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 17:04:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:21,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 17:04:21,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:04:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 17:04:21,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:04:21,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725435527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:04:21,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:04:21,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2022-07-19 17:04:21,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045981458] [2022-07-19 17:04:21,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:04:21,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:04:21,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:04:21,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:04:21,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:04:21,408 INFO L87 Difference]: Start difference. First operand 3731 states and 6350 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 17:04:22,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:04:22,504 INFO L93 Difference]: Finished difference Result 9464 states and 16326 transitions. [2022-07-19 17:04:22,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:04:22,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 135 [2022-07-19 17:04:22,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:04:22,532 INFO L225 Difference]: With dead ends: 9464 [2022-07-19 17:04:22,532 INFO L226 Difference]: Without dead ends: 5819 [2022-07-19 17:04:22,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:04:22,548 INFO L413 NwaCegarLoop]: 1073 mSDtfsCounter, 878 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:04:22,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 1881 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:04:22,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5819 states. [2022-07-19 17:04:23,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5819 to 5817. [2022-07-19 17:04:23,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5817 states, 4395 states have (on average 1.5947667804323093) internal successors, (7009), 4520 states have internal predecessors, (7009), 1115 states have call successors, (1115), 214 states have call predecessors, (1115), 306 states have return successors, (1875), 1168 states have call predecessors, (1875), 1110 states have call successors, (1875) [2022-07-19 17:04:23,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5817 states to 5817 states and 9999 transitions. [2022-07-19 17:04:23,488 INFO L78 Accepts]: Start accepts. Automaton has 5817 states and 9999 transitions. Word has length 135 [2022-07-19 17:04:23,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:04:23,489 INFO L495 AbstractCegarLoop]: Abstraction has 5817 states and 9999 transitions. [2022-07-19 17:04:23,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 17:04:23,489 INFO L276 IsEmpty]: Start isEmpty. Operand 5817 states and 9999 transitions. [2022-07-19 17:04:23,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-19 17:04:23,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:04:23,502 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:04:23,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 17:04:23,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:04:23,728 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:04:23,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:04:23,728 INFO L85 PathProgramCache]: Analyzing trace with hash -793415904, now seen corresponding path program 1 times [2022-07-19 17:04:23,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:04:23,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586774304] [2022-07-19 17:04:23,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:04:23,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:04:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:23,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:23,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:23,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:04:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:04:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:04:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 17:04:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 17:04:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 17:04:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 17:04:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,418 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 17:04:24,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:04:24,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586774304] [2022-07-19 17:04:24,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586774304] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:04:24,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234995453] [2022-07-19 17:04:24,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:04:24,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:04:24,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:04:24,420 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) [2022-07-19 17:04:24,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 17:04:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 17:04:24,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:04:24,759 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 17:04:24,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:04:24,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234995453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:04:24,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:04:24,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2022-07-19 17:04:24,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561709559] [2022-07-19 17:04:24,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:04:24,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:04:24,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:04:24,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:04:24,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:04:24,762 INFO L87 Difference]: Start difference. First operand 5817 states and 9999 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 17:04:26,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:04:26,407 INFO L93 Difference]: Finished difference Result 15724 states and 27523 transitions. [2022-07-19 17:04:26,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:04:26,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 136 [2022-07-19 17:04:26,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:04:26,458 INFO L225 Difference]: With dead ends: 15724 [2022-07-19 17:04:26,458 INFO L226 Difference]: Without dead ends: 9993 [2022-07-19 17:04:26,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:04:26,488 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 877 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1830 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:04:26,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 1830 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:04:26,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9993 states. [2022-07-19 17:04:28,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9993 to 9990. [2022-07-19 17:04:28,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9990 states, 7510 states have (on average 1.59254327563249) internal successors, (11960), 7735 states have internal predecessors, (11960), 1955 states have call successors, (1955), 362 states have call predecessors, (1955), 524 states have return successors, (3539), 2064 states have call predecessors, (3539), 1950 states have call successors, (3539) [2022-07-19 17:04:28,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9990 states to 9990 states and 17454 transitions. [2022-07-19 17:04:28,250 INFO L78 Accepts]: Start accepts. Automaton has 9990 states and 17454 transitions. Word has length 136 [2022-07-19 17:04:28,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:04:28,250 INFO L495 AbstractCegarLoop]: Abstraction has 9990 states and 17454 transitions. [2022-07-19 17:04:28,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 17:04:28,251 INFO L276 IsEmpty]: Start isEmpty. Operand 9990 states and 17454 transitions. [2022-07-19 17:04:28,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-19 17:04:28,264 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:04:28,264 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:04:28,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 17:04:28,477 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,SelfDestructingSolverStorable20 [2022-07-19 17:04:28,477 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:04:28,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:04:28,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1173637431, now seen corresponding path program 1 times [2022-07-19 17:04:28,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:04:28,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697001605] [2022-07-19 17:04:28,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:04:28,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:04:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:28,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:28,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:28,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:04:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:28,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:04:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:28,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:28,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:29,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:29,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:29,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:29,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:04:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:29,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 17:04:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:29,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:29,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:29,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 17:04:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:29,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 17:04:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:29,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 17:04:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 17:04:29,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:04:29,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697001605] [2022-07-19 17:04:29,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697001605] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:04:29,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541979272] [2022-07-19 17:04:29,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:04:29,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:04:29,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:04:29,124 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) [2022-07-19 17:04:29,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 17:04:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:29,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 17:04:29,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:04:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 17:04:29,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:04:29,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541979272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:04:29,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:04:29,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2022-07-19 17:04:29,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674623744] [2022-07-19 17:04:29,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:04:29,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:04:29,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:04:29,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:04:29,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:04:29,437 INFO L87 Difference]: Start difference. First operand 9990 states and 17454 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 17:04:32,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:04:32,262 INFO L93 Difference]: Finished difference Result 28245 states and 50688 transitions. [2022-07-19 17:04:32,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:04:32,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 137 [2022-07-19 17:04:32,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:04:32,448 INFO L225 Difference]: With dead ends: 28245 [2022-07-19 17:04:32,449 INFO L226 Difference]: Without dead ends: 18341 [2022-07-19 17:04:32,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:04:32,504 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 876 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:04:32,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 1841 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:04:32,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18341 states. [2022-07-19 17:04:35,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18341 to 18337. [2022-07-19 17:04:35,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18337 states, 13741 states have (on average 1.5903500473036898) internal successors, (21853), 14166 states have internal predecessors, (21853), 3635 states have call successors, (3635), 658 states have call predecessors, (3635), 960 states have return successors, (7383), 3856 states have call predecessors, (7383), 3630 states have call successors, (7383) [2022-07-19 17:04:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18337 states to 18337 states and 32871 transitions. [2022-07-19 17:04:35,907 INFO L78 Accepts]: Start accepts. Automaton has 18337 states and 32871 transitions. Word has length 137 [2022-07-19 17:04:35,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:04:35,908 INFO L495 AbstractCegarLoop]: Abstraction has 18337 states and 32871 transitions. [2022-07-19 17:04:35,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 17:04:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 18337 states and 32871 transitions. [2022-07-19 17:04:35,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-19 17:04:35,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:04:35,920 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:04:35,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 17:04:36,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:04:36,139 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:04:36,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:04:36,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2022752578, now seen corresponding path program 1 times [2022-07-19 17:04:36,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:04:36,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93718410] [2022-07-19 17:04:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:04:36,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:04:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:36,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:36,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:36,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:04:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:36,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:04:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:36,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:36,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:36,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:36,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:36,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:36,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:04:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:36,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 17:04:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:36,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:36,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:36,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 17:04:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:36,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 17:04:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:36,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 17:04:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 17:04:36,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:04:36,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93718410] [2022-07-19 17:04:36,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93718410] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:04:36,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213477790] [2022-07-19 17:04:36,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:04:36,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:04:36,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:04:36,785 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) [2022-07-19 17:04:36,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 17:04:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:37,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 17:04:37,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:04:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 17:04:37,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:04:37,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213477790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:04:37,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:04:37,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2022-07-19 17:04:37,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271033120] [2022-07-19 17:04:37,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:04:37,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:04:37,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:04:37,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:04:37,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:04:37,075 INFO L87 Difference]: Start difference. First operand 18337 states and 32871 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 17:04:42,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:04:42,887 INFO L93 Difference]: Finished difference Result 53288 states and 99671 transitions. [2022-07-19 17:04:42,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:04:42,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 138 [2022-07-19 17:04:42,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:04:43,177 INFO L225 Difference]: With dead ends: 53288 [2022-07-19 17:04:43,177 INFO L226 Difference]: Without dead ends: 35037 [2022-07-19 17:04:43,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:04:43,287 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 875 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:04:43,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1838 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:04:43,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35037 states. [2022-07-19 17:04:49,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35037 to 35032. [2022-07-19 17:04:49,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35032 states, 26204 states have (on average 1.5880781560067165) internal successors, (41614), 27029 states have internal predecessors, (41614), 6995 states have call successors, (6995), 1250 states have call predecessors, (6995), 1832 states have return successors, (16847), 7440 states have call predecessors, (16847), 6990 states have call successors, (16847) [2022-07-19 17:04:49,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35032 states to 35032 states and 65456 transitions. [2022-07-19 17:04:49,988 INFO L78 Accepts]: Start accepts. Automaton has 35032 states and 65456 transitions. Word has length 138 [2022-07-19 17:04:49,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:04:49,989 INFO L495 AbstractCegarLoop]: Abstraction has 35032 states and 65456 transitions. [2022-07-19 17:04:49,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 17:04:49,989 INFO L276 IsEmpty]: Start isEmpty. Operand 35032 states and 65456 transitions. [2022-07-19 17:04:50,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 17:04:50,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:04:50,005 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:04:50,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 17:04:50,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:04:50,227 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:04:50,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:04:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash 291565341, now seen corresponding path program 1 times [2022-07-19 17:04:50,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:04:50,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516536644] [2022-07-19 17:04:50,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:04:50,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:04:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:50,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:50,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:50,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:04:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:50,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:04:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:50,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:50,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:50,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:50,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:50,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:50,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:04:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:50,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 17:04:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:50,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:50,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:50,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 17:04:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:50,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 17:04:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:50,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 17:04:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 17:04:50,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:04:50,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516536644] [2022-07-19 17:04:50,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516536644] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:04:50,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293350254] [2022-07-19 17:04:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:04:50,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:04:50,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:04:50,856 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) [2022-07-19 17:04:50,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 17:04:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:51,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 17:04:51,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:04:51,292 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 17:04:51,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:04:51,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293350254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:04:51,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:04:51,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2022-07-19 17:04:51,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608974365] [2022-07-19 17:04:51,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:04:51,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:04:51,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:04:51,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:04:51,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:04:51,294 INFO L87 Difference]: Start difference. First operand 35032 states and 65456 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 17:05:02,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:05:02,559 INFO L93 Difference]: Finished difference Result 103375 states and 207165 transitions. [2022-07-19 17:05:02,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:05:02,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 141 [2022-07-19 17:05:02,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:05:03,164 INFO L225 Difference]: With dead ends: 103375 [2022-07-19 17:05:03,164 INFO L226 Difference]: Without dead ends: 68417 [2022-07-19 17:05:03,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:05:03,498 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 874 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:05:03,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1854 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:05:03,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68417 states.