./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product32.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_spec3_product32.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d14be9b096a9cbd7bae6b76d9713e8ec6e66d6633cec6a9d1cec5445761f8a9c --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 16:59:56,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 16:59:56,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 16:59:56,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 16:59:56,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 16:59:56,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 16:59:56,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 16:59:56,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 16:59:56,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 16:59:56,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 16:59:56,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 16:59:56,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 16:59:56,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 16:59:56,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 16:59:56,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 16:59:56,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 16:59:56,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 16:59:56,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 16:59:56,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 16:59:56,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 16:59:56,429 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 16:59:56,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 16:59:56,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 16:59:56,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 16:59:56,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 16:59:56,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 16:59:56,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 16:59:56,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 16:59:56,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 16:59:56,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 16:59:56,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 16:59:56,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 16:59:56,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 16:59:56,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 16:59:56,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 16:59:56,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 16:59:56,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 16:59:56,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 16:59:56,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 16:59:56,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 16:59:56,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 16:59:56,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 16:59:56,439 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 16:59:56,462 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 16:59:56,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 16:59:56,464 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 16:59:56,464 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 16:59:56,464 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 16:59:56,464 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 16:59:56,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 16:59:56,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 16:59:56,465 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 16:59:56,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 16:59:56,466 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 16:59:56,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 16:59:56,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 16:59:56,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 16:59:56,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 16:59:56,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 16:59:56,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 16:59:56,467 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 16:59:56,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 16:59:56,468 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 16:59:56,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 16:59:56,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 16:59:56,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 16:59:56,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 16:59:56,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:59:56,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 16:59:56,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 16:59:56,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 16:59:56,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 16:59:56,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 16:59:56,470 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 16:59:56,470 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 16:59:56,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 16:59:56,470 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d14be9b096a9cbd7bae6b76d9713e8ec6e66d6633cec6a9d1cec5445761f8a9c [2022-07-19 16:59:56,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 16:59:56,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 16:59:56,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 16:59:56,681 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 16:59:56,682 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 16:59:56,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2022-07-19 16:59:56,725 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fde07219/6aa3ba865e5b47c9bc5241ba3003db70/FLAG48e5572c0 [2022-07-19 16:59:57,175 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 16:59:57,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2022-07-19 16:59:57,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fde07219/6aa3ba865e5b47c9bc5241ba3003db70/FLAG48e5572c0 [2022-07-19 16:59:57,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fde07219/6aa3ba865e5b47c9bc5241ba3003db70 [2022-07-19 16:59:57,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 16:59:57,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 16:59:57,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 16:59:57,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 16:59:57,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 16:59:57,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:59:57" (1/1) ... [2022-07-19 16:59:57,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0211b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:57, skipping insertion in model container [2022-07-19 16:59:57,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:59:57" (1/1) ... [2022-07-19 16:59:57,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 16:59:57,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 16:59:57,435 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_spec3_product32.cil.c[3233,3246] [2022-07-19 16:59:57,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:59:57,643 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 16:59:57,664 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_spec3_product32.cil.c[3233,3246] [2022-07-19 16:59:57,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:59:57,733 INFO L208 MainTranslator]: Completed translation [2022-07-19 16:59:57,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:57 WrapperNode [2022-07-19 16:59:57,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 16:59:57,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 16:59:57,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 16:59:57,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 16:59:57,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:57" (1/1) ... [2022-07-19 16:59:57,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:57" (1/1) ... [2022-07-19 16:59:57,794 INFO L137 Inliner]: procedures = 97, calls = 361, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 1010 [2022-07-19 16:59:57,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 16:59:57,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 16:59:57,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 16:59:57,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 16:59:57,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:57" (1/1) ... [2022-07-19 16:59:57,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:57" (1/1) ... [2022-07-19 16:59:57,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:57" (1/1) ... [2022-07-19 16:59:57,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:57" (1/1) ... [2022-07-19 16:59:57,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:57" (1/1) ... [2022-07-19 16:59:57,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:57" (1/1) ... [2022-07-19 16:59:57,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:57" (1/1) ... [2022-07-19 16:59:57,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 16:59:57,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 16:59:57,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 16:59:57,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 16:59:57,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:57" (1/1) ... [2022-07-19 16:59:57,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:59:57,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:59:57,924 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 16:59:57,967 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 16:59:57,986 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-07-19 16:59:57,986 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-07-19 16:59:57,986 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-19 16:59:57,986 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-19 16:59:57,986 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-19 16:59:57,987 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-19 16:59:57,987 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-07-19 16:59:57,988 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-07-19 16:59:57,988 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-19 16:59:57,988 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-19 16:59:57,988 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-19 16:59:57,989 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-19 16:59:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-19 16:59:57,989 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-19 16:59:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-19 16:59:57,989 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-19 16:59:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-19 16:59:57,989 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-19 16:59:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-19 16:59:57,990 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-19 16:59:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-19 16:59:57,990 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-19 16:59:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 16:59:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-19 16:59:57,990 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-19 16:59:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-19 16:59:57,991 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-19 16:59:57,991 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-19 16:59:57,991 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-19 16:59:57,991 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-19 16:59:57,991 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-19 16:59:57,991 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-19 16:59:57,991 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-19 16:59:57,991 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-19 16:59:57,992 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-19 16:59:57,992 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-19 16:59:57,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-19 16:59:57,992 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-19 16:59:57,992 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-19 16:59:57,992 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-07-19 16:59:57,992 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-07-19 16:59:57,993 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-19 16:59:57,993 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-19 16:59:57,993 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-07-19 16:59:57,993 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-07-19 16:59:57,993 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-19 16:59:57,993 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-19 16:59:57,994 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-19 16:59:57,994 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-19 16:59:57,994 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-19 16:59:57,994 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-19 16:59:57,994 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-19 16:59:57,995 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-19 16:59:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 16:59:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-19 16:59:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-19 16:59:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 16:59:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 16:59:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-19 16:59:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-19 16:59:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-07-19 16:59:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-07-19 16:59:58,142 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 16:59:58,145 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 16:59:58,971 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 16:59:58,985 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 16:59:58,985 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 16:59:58,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:59:58 BoogieIcfgContainer [2022-07-19 16:59:58,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 16:59:58,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 16:59:58,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 16:59:58,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 16:59:58,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 04:59:57" (1/3) ... [2022-07-19 16:59:58,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4f881e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:59:58, skipping insertion in model container [2022-07-19 16:59:58,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:57" (2/3) ... [2022-07-19 16:59:58,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4f881e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:59:58, skipping insertion in model container [2022-07-19 16:59:58,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:59:58" (3/3) ... [2022-07-19 16:59:58,996 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product32.cil.c [2022-07-19 16:59:59,005 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 16:59:59,006 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 16:59:59,062 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 16:59:59,068 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@3eb731c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1dd34aa8 [2022-07-19 16:59:59,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 16:59:59,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 629 states, 483 states have (on average 1.660455486542443) internal successors, (802), 503 states have internal predecessors, (802), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) [2022-07-19 16:59:59,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 16:59:59,093 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:59:59,093 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] [2022-07-19 16:59:59,094 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:59:59,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:59:59,097 INFO L85 PathProgramCache]: Analyzing trace with hash -699488972, now seen corresponding path program 1 times [2022-07-19 16:59:59,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:59:59,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101341643] [2022-07-19 16:59:59,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:59:59,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:59:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:59,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:59,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:59,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:59:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:59,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:59,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:59,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:59:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:59,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:59:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:59,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:59:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:59,778 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 16:59:59,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:59:59,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101341643] [2022-07-19 16:59:59,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101341643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:59:59,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:59:59,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:59:59,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055929047] [2022-07-19 16:59:59,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:59:59,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:59:59,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:59:59,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:59:59,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:59:59,814 INFO L87 Difference]: Start difference. First operand has 629 states, 483 states have (on average 1.660455486542443) internal successors, (802), 503 states have internal predecessors, (802), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:00:05,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:05,201 INFO L93 Difference]: Finished difference Result 1539 states and 2625 transitions. [2022-07-19 17:00:05,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 17:00:05,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2022-07-19 17:00:05,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:05,227 INFO L225 Difference]: With dead ends: 1539 [2022-07-19 17:00:05,227 INFO L226 Difference]: Without dead ends: 914 [2022-07-19 17:00:05,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-19 17:00:05,239 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 1616 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 5226 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 2992 SdHoareTripleChecker+Invalid, 5710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 5226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:05,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 2992 Invalid, 5710 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [484 Valid, 5226 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-19 17:00:05,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-07-19 17:00:05,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 632. [2022-07-19 17:00:05,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 486 states have (on average 1.6522633744855968) internal successors, (803), 506 states have internal predecessors, (803), 116 states have call successors, (116), 29 states have call predecessors, (116), 29 states have return successors, (115), 110 states have call predecessors, (115), 113 states have call successors, (115) [2022-07-19 17:00:05,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1034 transitions. [2022-07-19 17:00:05,378 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1034 transitions. Word has length 67 [2022-07-19 17:00:05,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:05,379 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 1034 transitions. [2022-07-19 17:00:05,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:00:05,380 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1034 transitions. [2022-07-19 17:00:05,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 17:00:05,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:05,388 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] [2022-07-19 17:00:05,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 17:00:05,389 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:05,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:05,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1307471742, now seen corresponding path program 1 times [2022-07-19 17:00:05,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:05,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351465886] [2022-07-19 17:00:05,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:05,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:05,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:05,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:05,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:05,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:05,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:00:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:05,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 17:00:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:05,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:00:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:05,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 17:00:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:05,691 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 17:00:05,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:05,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351465886] [2022-07-19 17:00:05,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351465886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:05,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:00:05,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:00:05,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006798247] [2022-07-19 17:00:05,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:05,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:00:05,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:05,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:00:05,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:00:05,695 INFO L87 Difference]: Start difference. First operand 632 states and 1034 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, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:00:09,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:09,614 INFO L93 Difference]: Finished difference Result 1524 states and 2572 transitions. [2022-07-19 17:00:09,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:00:09,615 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, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-07-19 17:00:09,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:09,623 INFO L225 Difference]: With dead ends: 1524 [2022-07-19 17:00:09,623 INFO L226 Difference]: Without dead ends: 877 [2022-07-19 17:00:09,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:00:09,630 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 1508 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 2499 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 2499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:09,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 1806 Invalid, 2978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 2499 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-19 17:00:09,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2022-07-19 17:00:09,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 608. [2022-07-19 17:00:09,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 465 states have (on average 1.643010752688172) internal successors, (764), 483 states have internal predecessors, (764), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-19 17:00:09,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 991 transitions. [2022-07-19 17:00:09,687 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 991 transitions. Word has length 68 [2022-07-19 17:00:09,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:09,688 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 991 transitions. [2022-07-19 17:00:09,688 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, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:00:09,688 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 991 transitions. [2022-07-19 17:00:09,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 17:00:09,689 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:09,689 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] [2022-07-19 17:00:09,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 17:00:09,689 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:09,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:09,690 INFO L85 PathProgramCache]: Analyzing trace with hash 235603084, now seen corresponding path program 1 times [2022-07-19 17:00:09,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:09,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813950197] [2022-07-19 17:00:09,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:09,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:09,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:09,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:09,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:09,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:09,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:09,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 17:00:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:09,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:00:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:09,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 17:00:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:09,950 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 17:00:09,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:09,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813950197] [2022-07-19 17:00:09,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813950197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:09,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:00:09,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:00:09,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398775312] [2022-07-19 17:00:09,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:09,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:00:09,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:09,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:00:09,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:00:09,955 INFO L87 Difference]: Start difference. First operand 608 states and 991 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, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:00:14,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:14,027 INFO L93 Difference]: Finished difference Result 1469 states and 2478 transitions. [2022-07-19 17:00:14,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:00:14,032 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, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-07-19 17:00:14,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:14,037 INFO L225 Difference]: With dead ends: 1469 [2022-07-19 17:00:14,037 INFO L226 Difference]: Without dead ends: 877 [2022-07-19 17:00:14,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:00:14,046 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 899 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 2582 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 2582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:14,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 1780 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 2582 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-19 17:00:14,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2022-07-19 17:00:14,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 608. [2022-07-19 17:00:14,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 465 states have (on average 1.6408602150537634) internal successors, (763), 483 states have internal predecessors, (763), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-19 17:00:14,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 990 transitions. [2022-07-19 17:00:14,091 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 990 transitions. Word has length 68 [2022-07-19 17:00:14,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:14,092 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 990 transitions. [2022-07-19 17:00:14,093 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, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:00:14,093 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 990 transitions. [2022-07-19 17:00:14,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-19 17:00:14,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:14,094 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] [2022-07-19 17:00:14,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 17:00:14,095 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:14,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:14,095 INFO L85 PathProgramCache]: Analyzing trace with hash -728662656, now seen corresponding path program 1 times [2022-07-19 17:00:14,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:14,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816497765] [2022-07-19 17:00:14,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:14,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:00:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 17:00:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:00:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,381 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 17:00:14,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:14,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816497765] [2022-07-19 17:00:14,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816497765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:14,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:00:14,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:00:14,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567120664] [2022-07-19 17:00:14,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:14,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:00:14,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:14,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:00:14,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:00:14,384 INFO L87 Difference]: Start difference. First operand 608 states and 990 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:00:19,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:19,252 INFO L93 Difference]: Finished difference Result 1487 states and 2500 transitions. [2022-07-19 17:00:19,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 17:00:19,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2022-07-19 17:00:19,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:19,257 INFO L225 Difference]: With dead ends: 1487 [2022-07-19 17:00:19,257 INFO L226 Difference]: Without dead ends: 871 [2022-07-19 17:00:19,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-19 17:00:19,260 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 1547 mSDsluCounter, 1954 mSDsCounter, 0 mSdLazyCounter, 5072 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 2836 SdHoareTripleChecker+Invalid, 5551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 5072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:19,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1662 Valid, 2836 Invalid, 5551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 5072 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-19 17:00:19,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-07-19 17:00:19,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 602. [2022-07-19 17:00:19,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 459 states have (on average 1.6339869281045751) internal successors, (750), 477 states have internal predecessors, (750), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-19 17:00:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 977 transitions. [2022-07-19 17:00:19,297 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 977 transitions. Word has length 69 [2022-07-19 17:00:19,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:19,297 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 977 transitions. [2022-07-19 17:00:19,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:00:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 977 transitions. [2022-07-19 17:00:19,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 17:00:19,298 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:19,298 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] [2022-07-19 17:00:19,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 17:00:19,299 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:19,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:19,299 INFO L85 PathProgramCache]: Analyzing trace with hash 418307892, now seen corresponding path program 1 times [2022-07-19 17:00:19,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:19,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343119963] [2022-07-19 17:00:19,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:19,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:19,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:19,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:19,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:19,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:19,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:19,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:00:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:19,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 17:00:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:19,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 17:00:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:19,535 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 17:00:19,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:19,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343119963] [2022-07-19 17:00:19,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343119963] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:19,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:00:19,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:00:19,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149517337] [2022-07-19 17:00:19,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:19,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:00:19,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:19,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:00:19,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:00:19,546 INFO L87 Difference]: Start difference. First operand 602 states and 977 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, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:00:23,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:23,267 INFO L93 Difference]: Finished difference Result 1457 states and 2449 transitions. [2022-07-19 17:00:23,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:00:23,268 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, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-07-19 17:00:23,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:23,272 INFO L225 Difference]: With dead ends: 1457 [2022-07-19 17:00:23,272 INFO L226 Difference]: Without dead ends: 871 [2022-07-19 17:00:23,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:00:23,274 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 875 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 2541 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 2541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:23,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 1752 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 2541 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 17:00:23,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-07-19 17:00:23,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 602. [2022-07-19 17:00:23,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 459 states have (on average 1.6318082788671024) internal successors, (749), 477 states have internal predecessors, (749), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-19 17:00:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 976 transitions. [2022-07-19 17:00:23,311 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 976 transitions. Word has length 70 [2022-07-19 17:00:23,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:23,311 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 976 transitions. [2022-07-19 17:00:23,311 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, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:00:23,312 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 976 transitions. [2022-07-19 17:00:23,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-19 17:00:23,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:23,312 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] [2022-07-19 17:00:23,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 17:00:23,313 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:23,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:23,313 INFO L85 PathProgramCache]: Analyzing trace with hash 321768477, now seen corresponding path program 1 times [2022-07-19 17:00:23,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:23,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140944920] [2022-07-19 17:00:23,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:23,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:23,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:23,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:23,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:23,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:23,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:23,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 17:00:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:23,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 17:00:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:23,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 17:00:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:23,569 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 17:00:23,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:23,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140944920] [2022-07-19 17:00:23,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140944920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:23,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:00:23,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:00:23,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679573518] [2022-07-19 17:00:23,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:23,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:00:23,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:23,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:00:23,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:00:23,571 INFO L87 Difference]: Start difference. First operand 602 states and 976 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:00:28,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:28,051 INFO L93 Difference]: Finished difference Result 1475 states and 2469 transitions. [2022-07-19 17:00:28,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 17:00:28,052 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-07-19 17:00:28,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:28,056 INFO L225 Difference]: With dead ends: 1475 [2022-07-19 17:00:28,056 INFO L226 Difference]: Without dead ends: 865 [2022-07-19 17:00:28,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-19 17:00:28,058 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 1515 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 5003 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 5482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 5003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:28,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1630 Valid, 2824 Invalid, 5482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 5003 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-19 17:00:28,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2022-07-19 17:00:28,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 596. [2022-07-19 17:00:28,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 453 states have (on average 1.6247240618101546) internal successors, (736), 471 states have internal predecessors, (736), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-19 17:00:28,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 963 transitions. [2022-07-19 17:00:28,097 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 963 transitions. Word has length 71 [2022-07-19 17:00:28,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:28,097 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 963 transitions. [2022-07-19 17:00:28,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:00:28,097 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 963 transitions. [2022-07-19 17:00:28,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 17:00:28,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:28,098 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] [2022-07-19 17:00:28,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 17:00:28,098 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:28,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:28,099 INFO L85 PathProgramCache]: Analyzing trace with hash -219339787, now seen corresponding path program 1 times [2022-07-19 17:00:28,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:28,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238844286] [2022-07-19 17:00:28,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:28,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:28,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:28,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:28,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:28,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:28,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:28,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 17:00:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:28,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:00:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:28,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 17:00:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:28,316 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 17:00:28,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:28,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238844286] [2022-07-19 17:00:28,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238844286] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:28,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:00:28,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:00:28,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922100727] [2022-07-19 17:00:28,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:28,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:00:28,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:28,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:00:28,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:00:28,319 INFO L87 Difference]: Start difference. First operand 596 states and 963 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:00:32,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:32,027 INFO L93 Difference]: Finished difference Result 1445 states and 2420 transitions. [2022-07-19 17:00:32,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:00:32,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2022-07-19 17:00:32,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:32,031 INFO L225 Difference]: With dead ends: 1445 [2022-07-19 17:00:32,032 INFO L226 Difference]: Without dead ends: 865 [2022-07-19 17:00:32,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:00:32,034 INFO L413 NwaCegarLoop]: 845 mSDtfsCounter, 851 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 2518 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 2747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 2518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:32,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 1777 Invalid, 2747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 2518 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 17:00:32,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2022-07-19 17:00:32,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 596. [2022-07-19 17:00:32,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 453 states have (on average 1.6225165562913908) internal successors, (735), 471 states have internal predecessors, (735), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-19 17:00:32,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 962 transitions. [2022-07-19 17:00:32,073 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 962 transitions. Word has length 72 [2022-07-19 17:00:32,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:32,073 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 962 transitions. [2022-07-19 17:00:32,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:00:32,073 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 962 transitions. [2022-07-19 17:00:32,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-19 17:00:32,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:32,074 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] [2022-07-19 17:00:32,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 17:00:32,074 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:32,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:32,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1711076289, now seen corresponding path program 1 times [2022-07-19 17:00:32,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:32,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822043969] [2022-07-19 17:00:32,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:32,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:32,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:32,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:32,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:32,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:32,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:32,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:00:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 17:00:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:32,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 17:00:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:32,453 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 17:00:32,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:32,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822043969] [2022-07-19 17:00:32,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822043969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:32,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:00:32,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:00:32,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266439901] [2022-07-19 17:00:32,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:32,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:00:32,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:32,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:00:32,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:00:32,455 INFO L87 Difference]: Start difference. First operand 596 states and 962 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:00:37,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:37,118 INFO L93 Difference]: Finished difference Result 1463 states and 2438 transitions. [2022-07-19 17:00:37,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 17:00:37,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2022-07-19 17:00:37,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:37,122 INFO L225 Difference]: With dead ends: 1463 [2022-07-19 17:00:37,122 INFO L226 Difference]: Without dead ends: 859 [2022-07-19 17:00:37,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-19 17:00:37,125 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 878 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 5088 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 2815 SdHoareTripleChecker+Invalid, 5320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 5088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:37,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 2815 Invalid, 5320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 5088 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-19 17:00:37,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-07-19 17:00:37,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 590. [2022-07-19 17:00:37,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 447 states have (on average 1.6152125279642058) internal successors, (722), 465 states have internal predecessors, (722), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-19 17:00:37,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 949 transitions. [2022-07-19 17:00:37,164 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 949 transitions. Word has length 73 [2022-07-19 17:00:37,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:37,165 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 949 transitions. [2022-07-19 17:00:37,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:00:37,165 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 949 transitions. [2022-07-19 17:00:37,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-19 17:00:37,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:37,166 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] [2022-07-19 17:00:37,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 17:00:37,166 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:37,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:37,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1784074016, now seen corresponding path program 1 times [2022-07-19 17:00:37,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:37,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737341832] [2022-07-19 17:00:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:37,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:37,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:37,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:37,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:37,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:37,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:37,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:00:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:37,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 17:00:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:37,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 17:00:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:37,440 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 17:00:37,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:37,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737341832] [2022-07-19 17:00:37,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737341832] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:37,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:00:37,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:00:37,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537326224] [2022-07-19 17:00:37,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:37,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:00:37,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:37,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:00:37,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:00:37,443 INFO L87 Difference]: Start difference. First operand 590 states and 949 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:00:40,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:40,785 INFO L93 Difference]: Finished difference Result 1433 states and 2391 transitions. [2022-07-19 17:00:40,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:00:40,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-07-19 17:00:40,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:40,789 INFO L225 Difference]: With dead ends: 1433 [2022-07-19 17:00:40,789 INFO L226 Difference]: Without dead ends: 859 [2022-07-19 17:00:40,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:00:40,796 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 1441 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:40,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 1701 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-19 17:00:40,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-07-19 17:00:40,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 590. [2022-07-19 17:00:40,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 447 states have (on average 1.6129753914988814) internal successors, (721), 465 states have internal predecessors, (721), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-19 17:00:40,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 948 transitions. [2022-07-19 17:00:40,837 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 948 transitions. Word has length 73 [2022-07-19 17:00:40,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:40,837 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 948 transitions. [2022-07-19 17:00:40,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:00:40,838 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 948 transitions. [2022-07-19 17:00:40,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 17:00:40,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:40,839 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] [2022-07-19 17:00:40,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 17:00:40,840 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:40,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:40,840 INFO L85 PathProgramCache]: Analyzing trace with hash 130504827, now seen corresponding path program 1 times [2022-07-19 17:00:40,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:40,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956455603] [2022-07-19 17:00:40,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:40,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:40,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:41,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:41,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:41,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:41,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:41,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 17:00:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 17:00:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:41,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 17:00:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:41,086 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 17:00:41,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:41,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956455603] [2022-07-19 17:00:41,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956455603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:41,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:00:41,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:00:41,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048159034] [2022-07-19 17:00:41,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:41,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:00:41,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:41,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:00:41,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:00:41,088 INFO L87 Difference]: Start difference. First operand 590 states and 948 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:00:44,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:44,546 INFO L93 Difference]: Finished difference Result 1445 states and 2401 transitions. [2022-07-19 17:00:44,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:00:44,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-07-19 17:00:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:44,550 INFO L225 Difference]: With dead ends: 1445 [2022-07-19 17:00:44,551 INFO L226 Difference]: Without dead ends: 871 [2022-07-19 17:00:44,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:00:44,554 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 1437 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:44,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 1712 Invalid, 2829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-19 17:00:44,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-07-19 17:00:44,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 596. [2022-07-19 17:00:44,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 453 states have (on average 1.6048565121412803) internal successors, (727), 471 states have internal predecessors, (727), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-19 17:00:44,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 954 transitions. [2022-07-19 17:00:44,598 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 954 transitions. Word has length 74 [2022-07-19 17:00:44,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:44,598 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 954 transitions. [2022-07-19 17:00:44,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:00:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 954 transitions. [2022-07-19 17:00:44,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 17:00:44,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:44,599 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] [2022-07-19 17:00:44,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 17:00:44,600 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:44,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:44,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1714862339, now seen corresponding path program 1 times [2022-07-19 17:00:44,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:44,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088155399] [2022-07-19 17:00:44,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:44,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:44,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:44,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:44,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:44,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:44,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:44,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 17:00:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:44,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 17:00:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:44,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 17:00:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:44,878 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 17:00:44,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:44,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088155399] [2022-07-19 17:00:44,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088155399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:44,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:00:44,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:00:44,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869895747] [2022-07-19 17:00:44,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:44,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:00:44,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:44,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:00:44,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:00:44,884 INFO L87 Difference]: Start difference. First operand 596 states and 954 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:00:49,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:49,603 INFO L93 Difference]: Finished difference Result 1448 states and 2402 transitions. [2022-07-19 17:00:49,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 17:00:49,603 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-07-19 17:00:49,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:49,607 INFO L225 Difference]: With dead ends: 1448 [2022-07-19 17:00:49,607 INFO L226 Difference]: Without dead ends: 859 [2022-07-19 17:00:49,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:00:49,609 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 840 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 4982 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 5215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 4982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:49,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 2834 Invalid, 5215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 4982 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-19 17:00:49,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-07-19 17:00:49,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 590. [2022-07-19 17:00:49,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 447 states have (on average 1.610738255033557) internal successors, (720), 465 states have internal predecessors, (720), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-19 17:00:49,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 947 transitions. [2022-07-19 17:00:49,651 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 947 transitions. Word has length 74 [2022-07-19 17:00:49,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:49,651 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 947 transitions. [2022-07-19 17:00:49,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:00:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 947 transitions. [2022-07-19 17:00:49,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-19 17:00:49,652 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:49,652 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 17:00:49,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 17:00:49,653 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:49,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:49,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1135164154, now seen corresponding path program 1 times [2022-07-19 17:00:49,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:49,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958466201] [2022-07-19 17:00:49,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:49,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:49,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:49,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:49,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:49,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:49,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:49,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 17:00:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:49,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 17:00:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:49,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 17:00:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:49,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 17:00:49,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:49,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958466201] [2022-07-19 17:00:49,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958466201] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:00:49,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192224904] [2022-07-19 17:00:49,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:49,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:00:49,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:00:49,955 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 17:00:49,957 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 17:00:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:50,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 17:00:50,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:00:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:00:50,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:00:50,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192224904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:50,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:00:50,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-19 17:00:50,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305862107] [2022-07-19 17:00:50,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:50,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:00:50,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:50,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:00:50,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:00:50,267 INFO L87 Difference]: Start difference. First operand 590 states and 947 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:00:50,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:50,384 INFO L93 Difference]: Finished difference Result 1681 states and 2729 transitions. [2022-07-19 17:00:50,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:00:50,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2022-07-19 17:00:50,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:50,389 INFO L225 Difference]: With dead ends: 1681 [2022-07-19 17:00:50,389 INFO L226 Difference]: Without dead ends: 1109 [2022-07-19 17:00:50,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:00:50,391 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 911 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:50,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 2470 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:00:50,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-07-19 17:00:50,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1094. [2022-07-19 17:00:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 836 states have (on average 1.6220095693779903) internal successors, (1356), 871 states have internal predecessors, (1356), 205 states have call successors, (205), 53 states have call predecessors, (205), 52 states have return successors, (207), 197 states have call predecessors, (207), 202 states have call successors, (207) [2022-07-19 17:00:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1768 transitions. [2022-07-19 17:00:50,468 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1768 transitions. Word has length 75 [2022-07-19 17:00:50,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:50,468 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1768 transitions. [2022-07-19 17:00:50,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:00:50,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1768 transitions. [2022-07-19 17:00:50,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-19 17:00:50,469 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:50,469 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:00:50,489 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 17:00:50,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-19 17:00:50,687 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:50,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:50,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1148699841, now seen corresponding path program 1 times [2022-07-19 17:00:50,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:50,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789030432] [2022-07-19 17:00:50,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:50,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:50,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:50,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:50,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:50,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:50,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:50,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 17:00:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:50,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 17:00:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:50,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 17:00:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 17:00:50,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:50,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789030432] [2022-07-19 17:00:50,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789030432] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:00:50,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985795865] [2022-07-19 17:00:50,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:50,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:00:50,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:00:50,932 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 17:00:50,933 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 17:00:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:51,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 17:00:51,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:00:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:00:51,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:00:51,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985795865] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:51,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:00:51,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-19 17:00:51,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148967033] [2022-07-19 17:00:51,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:51,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:00:51,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:51,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:00:51,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:00:51,218 INFO L87 Difference]: Start difference. First operand 1094 states and 1768 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:00:51,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:51,374 INFO L93 Difference]: Finished difference Result 2689 states and 4373 transitions. [2022-07-19 17:00:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:00:51,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2022-07-19 17:00:51,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:51,381 INFO L225 Difference]: With dead ends: 2689 [2022-07-19 17:00:51,381 INFO L226 Difference]: Without dead ends: 1613 [2022-07-19 17:00:51,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:00:51,387 INFO L413 NwaCegarLoop]: 1682 mSDtfsCounter, 910 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:51,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 2525 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:00:51,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2022-07-19 17:00:51,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1565. [2022-07-19 17:00:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1198 states have (on average 1.6327212020033388) internal successors, (1956), 1250 states have internal predecessors, (1956), 292 states have call successors, (292), 74 states have call predecessors, (292), 74 states have return successors, (299), 282 states have call predecessors, (299), 289 states have call successors, (299) [2022-07-19 17:00:51,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2547 transitions. [2022-07-19 17:00:51,504 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2547 transitions. Word has length 76 [2022-07-19 17:00:51,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:51,504 INFO L495 AbstractCegarLoop]: Abstraction has 1565 states and 2547 transitions. [2022-07-19 17:00:51,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:00:51,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2547 transitions. [2022-07-19 17:00:51,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-19 17:00:51,506 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:51,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:00:51,523 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 17:00:51,715 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,SelfDestructingSolverStorable12 [2022-07-19 17:00:51,716 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:51,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:51,716 INFO L85 PathProgramCache]: Analyzing trace with hash 522716143, now seen corresponding path program 1 times [2022-07-19 17:00:51,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:51,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554836383] [2022-07-19 17:00:51,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:51,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:51,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:51,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:51,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:51,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:51,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:51,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 17:00:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:51,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 17:00:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:51,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 17:00:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:52,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 17:00:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:52,002 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 17:00:52,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:52,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554836383] [2022-07-19 17:00:52,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554836383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:52,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:00:52,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:00:52,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783573043] [2022-07-19 17:00:52,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:52,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:00:52,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:52,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:00:52,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:00:52,003 INFO L87 Difference]: Start difference. First operand 1565 states and 2547 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 17:01:01,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:01:01,926 INFO L93 Difference]: Finished difference Result 6159 states and 10861 transitions. [2022-07-19 17:01:01,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 17:01:01,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2022-07-19 17:01:01,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:01:01,953 INFO L225 Difference]: With dead ends: 6159 [2022-07-19 17:01:01,953 INFO L226 Difference]: Without dead ends: 4612 [2022-07-19 17:01:01,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-19 17:01:01,960 INFO L413 NwaCegarLoop]: 1067 mSDtfsCounter, 2535 mSDsluCounter, 2137 mSDsCounter, 0 mSdLazyCounter, 6109 mSolverCounterSat, 898 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2685 SdHoareTripleChecker+Valid, 3204 SdHoareTripleChecker+Invalid, 7007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 6109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:01:01,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2685 Valid, 3204 Invalid, 7007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [898 Valid, 6109 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-07-19 17:01:01,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4612 states. [2022-07-19 17:01:02,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4612 to 3733. [2022-07-19 17:01:02,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3733 states, 2715 states have (on average 1.6044198895027624) internal successors, (4356), 2911 states have internal predecessors, (4356), 831 states have call successors, (831), 142 states have call predecessors, (831), 186 states have return successors, (1325), 829 states have call predecessors, (1325), 827 states have call successors, (1325) [2022-07-19 17:01:02,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 6512 transitions. [2022-07-19 17:01:02,408 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 6512 transitions. Word has length 78 [2022-07-19 17:01:02,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:01:02,408 INFO L495 AbstractCegarLoop]: Abstraction has 3733 states and 6512 transitions. [2022-07-19 17:01:02,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 17:01:02,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 6512 transitions. [2022-07-19 17:01:02,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 17:01:02,409 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:01:02,410 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:01:02,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 17:01:02,410 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:01:02,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:01:02,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1840391052, now seen corresponding path program 1 times [2022-07-19 17:01:02,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:01:02,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435022696] [2022-07-19 17:01:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:01:02,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:01:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:02,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:01:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:02,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:01:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:02,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:01:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:02,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:01:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:02,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:01:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:02,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 17:01:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:02,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 17:01:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:02,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 17:01:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:02,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 17:01:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:02,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 17:01:02,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:01:02,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435022696] [2022-07-19 17:01:02,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435022696] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:01:02,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25653394] [2022-07-19 17:01:02,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:01:02,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:01:02,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:01:02,677 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 17:01:02,678 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 17:01:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:02,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 17:01:02,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:01:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:01:02,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:01:02,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25653394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:01:02,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:01:02,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-19 17:01:02,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277506665] [2022-07-19 17:01:02,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:01:02,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:01:02,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:01:02,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:01:02,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:01:02,993 INFO L87 Difference]: Start difference. First operand 3733 states and 6512 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-19 17:01:04,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:01:04,222 INFO L93 Difference]: Finished difference Result 10208 states and 18118 transitions. [2022-07-19 17:01:04,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:01:04,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 79 [2022-07-19 17:01:04,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:01:04,254 INFO L225 Difference]: With dead ends: 10208 [2022-07-19 17:01:04,255 INFO L226 Difference]: Without dead ends: 6493 [2022-07-19 17:01:04,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:01:04,276 INFO L413 NwaCegarLoop]: 1024 mSDtfsCounter, 850 mSDsluCounter, 3457 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:01:04,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 4481 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 17:01:04,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6493 states. [2022-07-19 17:01:04,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6493 to 6424. [2022-07-19 17:01:04,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6424 states, 4674 states have (on average 1.5614035087719298) internal successors, (7298), 5008 states have internal predecessors, (7298), 1408 states have call successors, (1408), 256 states have call predecessors, (1408), 341 states have return successors, (2441), 1409 states have call predecessors, (2441), 1402 states have call successors, (2441) [2022-07-19 17:01:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6424 states to 6424 states and 11147 transitions. [2022-07-19 17:01:05,029 INFO L78 Accepts]: Start accepts. Automaton has 6424 states and 11147 transitions. Word has length 79 [2022-07-19 17:01:05,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:01:05,029 INFO L495 AbstractCegarLoop]: Abstraction has 6424 states and 11147 transitions. [2022-07-19 17:01:05,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-19 17:01:05,029 INFO L276 IsEmpty]: Start isEmpty. Operand 6424 states and 11147 transitions. [2022-07-19 17:01:05,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 17:01:05,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:01:05,030 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:01:05,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-19 17:01:05,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:01:05,231 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:01:05,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:01:05,231 INFO L85 PathProgramCache]: Analyzing trace with hash 622724818, now seen corresponding path program 1 times [2022-07-19 17:01:05,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:01:05,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38629718] [2022-07-19 17:01:05,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:01:05,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:01:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:05,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:01:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:05,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:01:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:05,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:01:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:05,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:01:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:05,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:01:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:05,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 17:01:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:05,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 17:01:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:05,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 17:01:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:05,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 17:01:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:05,481 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 17:01:05,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:01:05,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38629718] [2022-07-19 17:01:05,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38629718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:01:05,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:01:05,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:01:05,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881132995] [2022-07-19 17:01:05,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:01:05,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:01:05,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:01:05,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:01:05,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:01:05,482 INFO L87 Difference]: Start difference. First operand 6424 states and 11147 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 17:01:09,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:01:09,888 INFO L93 Difference]: Finished difference Result 14086 states and 25086 transitions. [2022-07-19 17:01:09,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:01:09,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2022-07-19 17:01:09,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:01:09,938 INFO L225 Difference]: With dead ends: 14086 [2022-07-19 17:01:09,938 INFO L226 Difference]: Without dead ends: 7680 [2022-07-19 17:01:09,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:01:09,959 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 1385 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:01:09,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1941 Invalid, 2790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-19 17:01:09,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7680 states. [2022-07-19 17:01:10,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7680 to 6894. [2022-07-19 17:01:10,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6894 states, 4896 states have (on average 1.5526960784313726) internal successors, (7602), 5270 states have internal predecessors, (7602), 1642 states have call successors, (1642), 260 states have call predecessors, (1642), 355 states have return successors, (2916), 1653 states have call predecessors, (2916), 1636 states have call successors, (2916) [2022-07-19 17:01:10,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6894 states to 6894 states and 12160 transitions. [2022-07-19 17:01:10,767 INFO L78 Accepts]: Start accepts. Automaton has 6894 states and 12160 transitions. Word has length 79 [2022-07-19 17:01:10,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:01:10,768 INFO L495 AbstractCegarLoop]: Abstraction has 6894 states and 12160 transitions. [2022-07-19 17:01:10,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 17:01:10,768 INFO L276 IsEmpty]: Start isEmpty. Operand 6894 states and 12160 transitions. [2022-07-19 17:01:10,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 17:01:10,773 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:01:10,773 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:01:10,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 17:01:10,774 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:01:10,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:01:10,774 INFO L85 PathProgramCache]: Analyzing trace with hash -2093024403, now seen corresponding path program 1 times [2022-07-19 17:01:10,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:01:10,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288944551] [2022-07-19 17:01:10,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:01:10,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:01:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:10,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:01:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:01:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:11,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:01:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:11,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:01:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:11,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:01:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:11,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 17:01:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:11,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 17:01:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:11,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 17:01:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:11,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 17:01:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:11,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 17:01:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 17:01:11,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:01:11,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288944551] [2022-07-19 17:01:11,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288944551] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:01:11,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:01:11,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:01:11,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892980290] [2022-07-19 17:01:11,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:01:11,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:01:11,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:01:11,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:01:11,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:01:11,047 INFO L87 Difference]: Start difference. First operand 6894 states and 12160 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 17:01:21,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:01:21,497 INFO L93 Difference]: Finished difference Result 22954 states and 44256 transitions. [2022-07-19 17:01:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 17:01:21,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2022-07-19 17:01:21,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:01:21,596 INFO L225 Difference]: With dead ends: 22954 [2022-07-19 17:01:21,596 INFO L226 Difference]: Without dead ends: 16078 [2022-07-19 17:01:21,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-19 17:01:21,637 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 3692 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 5748 mSolverCounterSat, 1317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3840 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 7065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1317 IncrementalHoareTripleChecker+Valid, 5748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:01:21,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3840 Valid, 3047 Invalid, 7065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1317 Valid, 5748 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-07-19 17:01:21,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16078 states. [2022-07-19 17:01:23,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16078 to 13670. [2022-07-19 17:01:23,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13670 states, 9704 states have (on average 1.5491549876339654) internal successors, (15033), 10446 states have internal predecessors, (15033), 3256 states have call successors, (3256), 514 states have call predecessors, (3256), 709 states have return successors, (6750), 3289 states have call predecessors, (6750), 3246 states have call successors, (6750) [2022-07-19 17:01:23,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13670 states to 13670 states and 25039 transitions. [2022-07-19 17:01:23,476 INFO L78 Accepts]: Start accepts. Automaton has 13670 states and 25039 transitions. Word has length 87 [2022-07-19 17:01:23,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:01:23,477 INFO L495 AbstractCegarLoop]: Abstraction has 13670 states and 25039 transitions. [2022-07-19 17:01:23,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 17:01:23,477 INFO L276 IsEmpty]: Start isEmpty. Operand 13670 states and 25039 transitions. [2022-07-19 17:01:23,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-19 17:01:23,478 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:01:23,478 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:01:23,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 17:01:23,479 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:01:23,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:01:23,479 INFO L85 PathProgramCache]: Analyzing trace with hash 326445404, now seen corresponding path program 1 times [2022-07-19 17:01:23,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:01:23,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870030039] [2022-07-19 17:01:23,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:01:23,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:01:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:23,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:01:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:23,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:01:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:23,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:01:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:23,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:01:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:23,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:01:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:23,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 17:01:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:23,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 17:01:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:23,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 17:01:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:23,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 17:01:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:23,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 17:01:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:23,793 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 17:01:23,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:01:23,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870030039] [2022-07-19 17:01:23,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870030039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:01:23,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:01:23,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:01:23,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482750978] [2022-07-19 17:01:23,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:01:23,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:01:23,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:01:23,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:01:23,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:01:23,794 INFO L87 Difference]: Start difference. First operand 13670 states and 25039 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 17:01:29,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:01:29,677 INFO L93 Difference]: Finished difference Result 28802 states and 54299 transitions. [2022-07-19 17:01:29,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:01:29,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2022-07-19 17:01:29,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:01:29,755 INFO L225 Difference]: With dead ends: 28802 [2022-07-19 17:01:29,755 INFO L226 Difference]: Without dead ends: 15150 [2022-07-19 17:01:29,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:01:29,813 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 826 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 2490 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 2707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 2490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:01:29,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 1971 Invalid, 2707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 2490 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-19 17:01:29,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15150 states. [2022-07-19 17:01:31,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15150 to 13710. [2022-07-19 17:01:31,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13710 states, 9740 states have (on average 1.547535934291581) internal successors, (15073), 10474 states have internal predecessors, (15073), 3256 states have call successors, (3256), 530 states have call predecessors, (3256), 713 states have return successors, (6734), 3285 states have call predecessors, (6734), 3246 states have call successors, (6734) [2022-07-19 17:01:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13710 states to 13710 states and 25063 transitions. [2022-07-19 17:01:31,548 INFO L78 Accepts]: Start accepts. Automaton has 13710 states and 25063 transitions. Word has length 88 [2022-07-19 17:01:31,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:01:31,549 INFO L495 AbstractCegarLoop]: Abstraction has 13710 states and 25063 transitions. [2022-07-19 17:01:31,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 17:01:31,549 INFO L276 IsEmpty]: Start isEmpty. Operand 13710 states and 25063 transitions. [2022-07-19 17:01:31,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 17:01:31,551 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:01:31,551 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-19 17:01:31,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 17:01:31,552 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:01:31,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:01:31,552 INFO L85 PathProgramCache]: Analyzing trace with hash 47844304, now seen corresponding path program 1 times [2022-07-19 17:01:31,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:01:31,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042414414] [2022-07-19 17:01:31,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:01:31,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:01:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:31,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:01:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:31,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:01:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:31,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:01:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:31,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:01:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:31,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:01:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:31,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 17:01:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:31,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 17:01:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:31,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 17:01:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:31,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 17:01:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:31,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 17:01:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:31,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 17:01:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 17:01:31,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:01:31,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042414414] [2022-07-19 17:01:31,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042414414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:01:31,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:01:31,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:01:31,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380339002] [2022-07-19 17:01:31,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:01:31,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:01:31,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:01:31,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:01:31,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:01:31,812 INFO L87 Difference]: Start difference. First operand 13710 states and 25063 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 17:01:44,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:01:44,806 INFO L93 Difference]: Finished difference Result 45624 states and 96019 transitions. [2022-07-19 17:01:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 17:01:44,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-07-19 17:01:44,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:01:45,080 INFO L225 Difference]: With dead ends: 45624 [2022-07-19 17:01:45,081 INFO L226 Difference]: Without dead ends: 31932 [2022-07-19 17:01:45,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-19 17:01:45,193 INFO L413 NwaCegarLoop]: 1063 mSDtfsCounter, 3631 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 5867 mSolverCounterSat, 1281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3779 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 7148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1281 IncrementalHoareTripleChecker+Valid, 5867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:01:45,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3779 Valid, 3182 Invalid, 7148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1281 Valid, 5867 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-07-19 17:01:45,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31932 states. [2022-07-19 17:01:48,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31932 to 27348. [2022-07-19 17:01:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27348 states, 19428 states have (on average 1.5447292567428454) internal successors, (30011), 20890 states have internal predecessors, (30011), 6490 states have call successors, (6490), 1054 states have call predecessors, (6490), 1429 states have return successors, (16434), 6563 states have call predecessors, (16434), 6472 states have call successors, (16434) [2022-07-19 17:01:49,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27348 states to 27348 states and 52935 transitions. [2022-07-19 17:01:49,296 INFO L78 Accepts]: Start accepts. Automaton has 27348 states and 52935 transitions. Word has length 97 [2022-07-19 17:01:49,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:01:49,297 INFO L495 AbstractCegarLoop]: Abstraction has 27348 states and 52935 transitions. [2022-07-19 17:01:49,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 17:01:49,297 INFO L276 IsEmpty]: Start isEmpty. Operand 27348 states and 52935 transitions. [2022-07-19 17:01:49,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-19 17:01:49,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:01:49,299 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-19 17:01:49,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 17:01:49,299 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:01:49,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:01:49,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1456164769, now seen corresponding path program 1 times [2022-07-19 17:01:49,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:01:49,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411071329] [2022-07-19 17:01:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:01:49,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:01:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:49,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:01:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:49,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:01:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:49,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:01:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:49,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:01:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:49,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:01:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:49,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 17:01:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:49,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 17:01:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:49,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 17:01:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:49,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 17:01:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:49,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 17:01:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:49,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 17:01:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 17:01:49,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:01:49,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411071329] [2022-07-19 17:01:49,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411071329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:01:49,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:01:49,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:01:49,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347317059] [2022-07-19 17:01:49,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:01:49,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:01:49,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:01:49,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:01:49,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:01:49,537 INFO L87 Difference]: Start difference. First operand 27348 states and 52935 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:01:57,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:01:57,293 INFO L93 Difference]: Finished difference Result 57604 states and 117312 transitions. [2022-07-19 17:01:57,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:01:57,294 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2022-07-19 17:01:57,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:01:57,531 INFO L225 Difference]: With dead ends: 57604 [2022-07-19 17:01:57,531 INFO L226 Difference]: Without dead ends: 30274 [2022-07-19 17:01:57,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:01:57,729 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 1422 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 2801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:01:57,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 1855 Invalid, 2801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 17:01:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30274 states. [2022-07-19 17:02:01,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30274 to 27494. [2022-07-19 17:02:01,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27494 states, 19552 states have (on average 1.5423997545008183) internal successors, (30157), 21012 states have internal predecessors, (30157), 6496 states have call successors, (6496), 1070 states have call predecessors, (6496), 1445 states have return successors, (16550), 6571 states have call predecessors, (16550), 6478 states have call successors, (16550) [2022-07-19 17:02:01,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27494 states to 27494 states and 53203 transitions. [2022-07-19 17:02:01,746 INFO L78 Accepts]: Start accepts. Automaton has 27494 states and 53203 transitions. Word has length 98 [2022-07-19 17:02:01,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:01,746 INFO L495 AbstractCegarLoop]: Abstraction has 27494 states and 53203 transitions. [2022-07-19 17:02:01,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:02:01,746 INFO L276 IsEmpty]: Start isEmpty. Operand 27494 states and 53203 transitions. [2022-07-19 17:02:01,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-19 17:02:01,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:01,748 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2022-07-19 17:02:01,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 17:02:01,748 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:01,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:01,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1068616468, now seen corresponding path program 1 times [2022-07-19 17:02:01,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:01,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915661660] [2022-07-19 17:02:01,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:01,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:01,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:02:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:01,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:01,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:02:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:01,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:01,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:02:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:01,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 17:02:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:01,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 17:02:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:01,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 17:02:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:01,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 17:02:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:01,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 17:02:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:01,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 17:02:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:01,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 17:02:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 17:02:02,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:02,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915661660] [2022-07-19 17:02:02,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915661660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:02,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:02,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:02:02,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834386300] [2022-07-19 17:02:02,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:02,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:02:02,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:02,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:02:02,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:02:02,002 INFO L87 Difference]: Start difference. First operand 27494 states and 53203 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 17:02:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:20,897 INFO L93 Difference]: Finished difference Result 91109 states and 219725 transitions. [2022-07-19 17:02:20,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 17:02:20,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2022-07-19 17:02:20,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:21,557 INFO L225 Difference]: With dead ends: 91109 [2022-07-19 17:02:21,557 INFO L226 Difference]: Without dead ends: 63633 [2022-07-19 17:02:21,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-19 17:02:21,851 INFO L413 NwaCegarLoop]: 1059 mSDtfsCounter, 2475 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 6169 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2623 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 7020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 6169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:21,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2623 Valid, 3239 Invalid, 7020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 6169 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-07-19 17:02:21,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63633 states. [2022-07-19 17:02:29,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63633 to 54978. [2022-07-19 17:02:29,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54978 states, 39100 states have (on average 1.5404859335038363) internal successors, (60233), 42014 states have internal predecessors, (60233), 12976 states have call successors, (12976), 2134 states have call predecessors, (12976), 2901 states have return successors, (43634), 13149 states have call predecessors, (43634), 12942 states have call successors, (43634) [2022-07-19 17:02:30,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54978 states to 54978 states and 116843 transitions. [2022-07-19 17:02:30,478 INFO L78 Accepts]: Start accepts. Automaton has 54978 states and 116843 transitions. Word has length 108 [2022-07-19 17:02:30,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:30,478 INFO L495 AbstractCegarLoop]: Abstraction has 54978 states and 116843 transitions. [2022-07-19 17:02:30,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 17:02:30,478 INFO L276 IsEmpty]: Start isEmpty. Operand 54978 states and 116843 transitions. [2022-07-19 17:02:30,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 17:02:30,480 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:30,480 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2022-07-19 17:02:30,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 17:02:30,481 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:30,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:30,481 INFO L85 PathProgramCache]: Analyzing trace with hash 392918093, now seen corresponding path program 1 times [2022-07-19 17:02:30,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:30,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618530664] [2022-07-19 17:02:30,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:30,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:02:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:02:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:02:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 17:02:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 17:02:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 17:02:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 17:02:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 17:02:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 17:02:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 17:02:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 17:02:30,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:30,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618530664] [2022-07-19 17:02:30,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618530664] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:30,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:30,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:02:30,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576414915] [2022-07-19 17:02:30,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:30,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:02:30,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:30,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:02:30,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:02:30,690 INFO L87 Difference]: Start difference. First operand 54978 states and 116843 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 17:02:44,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:44,044 INFO L93 Difference]: Finished difference Result 115706 states and 267521 transitions. [2022-07-19 17:02:44,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:02:44,046 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-07-19 17:02:44,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:44,635 INFO L225 Difference]: With dead ends: 115706 [2022-07-19 17:02:44,635 INFO L226 Difference]: Without dead ends: 60746 [2022-07-19 17:02:45,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:02:45,259 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 1407 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 2358 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 2358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:45,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1924 Invalid, 2794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 2358 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-19 17:02:45,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60746 states. [2022-07-19 17:02:52,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60746 to 55170. [2022-07-19 17:02:52,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55170 states, 39276 states have (on average 1.5384713310927793) internal successors, (60425), 42190 states have internal predecessors, (60425), 12976 states have call successors, (12976), 2166 states have call predecessors, (12976), 2917 states have return successors, (43618), 13133 states have call predecessors, (43618), 12942 states have call successors, (43618) [2022-07-19 17:02:53,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55170 states to 55170 states and 117019 transitions. [2022-07-19 17:02:53,562 INFO L78 Accepts]: Start accepts. Automaton has 55170 states and 117019 transitions. Word has length 109 [2022-07-19 17:02:53,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:53,563 INFO L495 AbstractCegarLoop]: Abstraction has 55170 states and 117019 transitions. [2022-07-19 17:02:53,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 17:02:53,563 INFO L276 IsEmpty]: Start isEmpty. Operand 55170 states and 117019 transitions. [2022-07-19 17:02:53,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-19 17:02:53,565 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:53,565 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 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] [2022-07-19 17:02:53,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 17:02:53,566 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:53,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:53,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1557112543, now seen corresponding path program 1 times [2022-07-19 17:02:53,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:53,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455191805] [2022-07-19 17:02:53,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:53,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:53,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:02:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:53,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:53,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:02:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:53,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:53,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:02:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:53,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 17:02:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:53,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 17:02:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:53,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 17:02:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:53,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 17:02:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:53,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 17:02:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:53,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 17:02:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:53,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 17:02:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:53,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:02:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:53,816 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-19 17:02:53,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:53,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455191805] [2022-07-19 17:02:53,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455191805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:53,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:53,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:02:53,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362772779] [2022-07-19 17:02:53,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:53,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:02:53,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:53,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:02:53,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:02:53,820 INFO L87 Difference]: Start difference. First operand 55170 states and 117019 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-19 17:03:14,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:14,158 INFO L93 Difference]: Finished difference Result 138542 states and 309128 transitions. [2022-07-19 17:03:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:03:14,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 120 [2022-07-19 17:03:14,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:15,097 INFO L225 Difference]: With dead ends: 138542 [2022-07-19 17:03:15,098 INFO L226 Difference]: Without dead ends: 83342 [2022-07-19 17:03:15,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:03:15,569 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 3238 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 5563 mSolverCounterSat, 1097 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3383 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 6660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1097 IncrementalHoareTripleChecker+Valid, 5563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:15,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3383 Valid, 2609 Invalid, 6660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1097 Valid, 5563 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-07-19 17:03:15,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83342 states.