./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec2_product31.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 a8dba55a6053d72f9111ac5cd147f9f45da0f79494b1facfa57c6480910007fb --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 14:39:22,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 14:39:22,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 14:39:22,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 14:39:22,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 14:39:22,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 14:39:22,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 14:39:22,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 14:39:22,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 14:39:22,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 14:39:22,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 14:39:22,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 14:39:22,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 14:39:22,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 14:39:22,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 14:39:22,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 14:39:22,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 14:39:22,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 14:39:22,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 14:39:22,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 14:39:22,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 14:39:22,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 14:39:22,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 14:39:22,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 14:39:22,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 14:39:22,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 14:39:22,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 14:39:22,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 14:39:22,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 14:39:22,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 14:39:22,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 14:39:22,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 14:39:22,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 14:39:22,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 14:39:22,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 14:39:22,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 14:39:22,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 14:39:22,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 14:39:22,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 14:39:22,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 14:39:22,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 14:39:22,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 14:39:22,501 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 14:39:22,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 14:39:22,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 14:39:22,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 14:39:22,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 14:39:22,504 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 14:39:22,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 14:39:22,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 14:39:22,504 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 14:39:22,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 14:39:22,505 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 14:39:22,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 14:39:22,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 14:39:22,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 14:39:22,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 14:39:22,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 14:39:22,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 14:39:22,506 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 14:39:22,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 14:39:22,507 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 14:39:22,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 14:39:22,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 14:39:22,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 14:39:22,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 14:39:22,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:39:22,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 14:39:22,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 14:39:22,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 14:39:22,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 14:39:22,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 14:39:22,509 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 14:39:22,509 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 14:39:22,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 14:39:22,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 14:39:22,510 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8dba55a6053d72f9111ac5cd147f9f45da0f79494b1facfa57c6480910007fb [2021-12-17 14:39:22,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 14:39:22,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 14:39:22,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 14:39:22,730 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 14:39:22,730 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 14:39:22,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c [2021-12-17 14:39:22,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98e44cb6f/6179e3c3ccdc4a1fb3e6f8b9f7fa4f73/FLAG26e086a00 [2021-12-17 14:39:23,209 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 14:39:23,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c [2021-12-17 14:39:23,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98e44cb6f/6179e3c3ccdc4a1fb3e6f8b9f7fa4f73/FLAG26e086a00 [2021-12-17 14:39:23,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98e44cb6f/6179e3c3ccdc4a1fb3e6f8b9f7fa4f73 [2021-12-17 14:39:23,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 14:39:23,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 14:39:23,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 14:39:23,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 14:39:23,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 14:39:23,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:39:23" (1/1) ... [2021-12-17 14:39:23,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fe2f543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:23, skipping insertion in model container [2021-12-17 14:39:23,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:39:23" (1/1) ... [2021-12-17 14:39:23,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 14:39:23,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 14:39:23,945 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c[64450,64463] [2021-12-17 14:39:23,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:39:23,974 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 14:39:24,036 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c[64450,64463] [2021-12-17 14:39:24,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:39:24,067 INFO L208 MainTranslator]: Completed translation [2021-12-17 14:39:24,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:24 WrapperNode [2021-12-17 14:39:24,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 14:39:24,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 14:39:24,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 14:39:24,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 14:39:24,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:24" (1/1) ... [2021-12-17 14:39:24,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:24" (1/1) ... [2021-12-17 14:39:24,132 INFO L137 Inliner]: procedures = 97, calls = 349, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 966 [2021-12-17 14:39:24,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 14:39:24,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 14:39:24,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 14:39:24,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 14:39:24,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:24" (1/1) ... [2021-12-17 14:39:24,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:24" (1/1) ... [2021-12-17 14:39:24,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:24" (1/1) ... [2021-12-17 14:39:24,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:24" (1/1) ... [2021-12-17 14:39:24,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:24" (1/1) ... [2021-12-17 14:39:24,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:24" (1/1) ... [2021-12-17 14:39:24,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:24" (1/1) ... [2021-12-17 14:39:24,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 14:39:24,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 14:39:24,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 14:39:24,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 14:39:24,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:24" (1/1) ... [2021-12-17 14:39:24,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:39:24,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:39:24,233 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) [2021-12-17 14:39:24,234 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 [2021-12-17 14:39:24,271 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-12-17 14:39:24,271 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-12-17 14:39:24,271 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-17 14:39:24,271 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-17 14:39:24,272 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-17 14:39:24,272 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-17 14:39:24,272 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2021-12-17 14:39:24,272 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2021-12-17 14:39:24,272 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-17 14:39:24,272 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-17 14:39:24,273 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-17 14:39:24,273 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-17 14:39:24,273 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-17 14:39:24,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-17 14:39:24,273 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-12-17 14:39:24,273 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-12-17 14:39:24,273 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-12-17 14:39:24,273 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-12-17 14:39:24,274 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-17 14:39:24,274 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-17 14:39:24,274 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-17 14:39:24,274 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-17 14:39:24,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 14:39:24,274 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-17 14:39:24,274 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-17 14:39:24,274 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-17 14:39:24,274 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-17 14:39:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-12-17 14:39:24,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-12-17 14:39:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-17 14:39:24,275 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-17 14:39:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-17 14:39:24,275 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-17 14:39:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-12-17 14:39:24,276 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-12-17 14:39:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-17 14:39:24,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-17 14:39:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-17 14:39:24,276 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-17 14:39:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-17 14:39:24,276 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-17 14:39:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-17 14:39:24,277 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-17 14:39:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-17 14:39:24,277 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-17 14:39:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-17 14:39:24,277 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-17 14:39:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-17 14:39:24,277 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-17 14:39:24,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 14:39:24,278 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-17 14:39:24,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-17 14:39:24,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 14:39:24,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 14:39:24,279 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-17 14:39:24,279 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-17 14:39:24,446 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 14:39:24,449 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 14:39:25,134 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 14:39:25,141 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 14:39:25,141 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 14:39:25,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:39:25 BoogieIcfgContainer [2021-12-17 14:39:25,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 14:39:25,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 14:39:25,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 14:39:25,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 14:39:25,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 02:39:23" (1/3) ... [2021-12-17 14:39:25,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e1133e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:39:25, skipping insertion in model container [2021-12-17 14:39:25,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:39:24" (2/3) ... [2021-12-17 14:39:25,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e1133e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:39:25, skipping insertion in model container [2021-12-17 14:39:25,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:39:25" (3/3) ... [2021-12-17 14:39:25,164 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product31.cil.c [2021-12-17 14:39:25,167 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 14:39:25,167 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 14:39:25,197 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 14:39:25,201 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 14:39:25,201 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 14:39:25,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 466 states have (on average 1.6802575107296138) internal successors, (783), 487 states have internal predecessors, (783), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) [2021-12-17 14:39:25,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-17 14:39:25,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:39:25,258 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:39:25,259 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:39:25,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:39:25,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1539098875, now seen corresponding path program 1 times [2021-12-17 14:39:25,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:39:25,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104525321] [2021-12-17 14:39:25,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:39:25,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:39:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:25,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:25,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:25,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:39:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:25,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 14:39:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:25,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:25,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:25,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:25,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:39:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:25,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:39:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:25,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:25,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:25,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:39:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:25,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:39:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:25,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:39:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:25,914 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:39:25,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:39:25,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104525321] [2021-12-17 14:39:25,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104525321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:39:25,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:39:25,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:39:25,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114020497] [2021-12-17 14:39:25,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:39:25,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:39:25,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:39:25,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:39:25,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:39:25,951 INFO L87 Difference]: Start difference. First operand has 596 states, 466 states have (on average 1.6802575107296138) internal successors, (783), 487 states have internal predecessors, (783), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-17 14:39:29,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:39:29,740 INFO L93 Difference]: Finished difference Result 1433 states and 2411 transitions. [2021-12-17 14:39:29,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 14:39:29,742 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2021-12-17 14:39:29,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:39:29,756 INFO L225 Difference]: With dead ends: 1433 [2021-12-17 14:39:29,756 INFO L226 Difference]: Without dead ends: 849 [2021-12-17 14:39:29,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:39:29,764 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 1952 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 615 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2039 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 2999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 615 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:39:29,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2039 Valid, 2391 Invalid, 2999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [615 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-17 14:39:29,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-12-17 14:39:29,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 588. [2021-12-17 14:39:29,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.6760869565217391) internal successors, (771), 479 states have internal predecessors, (771), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-17 14:39:29,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 970 transitions. [2021-12-17 14:39:29,853 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 970 transitions. Word has length 104 [2021-12-17 14:39:29,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:39:29,853 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 970 transitions. [2021-12-17 14:39:29,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-17 14:39:29,853 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 970 transitions. [2021-12-17 14:39:29,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-17 14:39:29,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:39:29,858 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:39:29,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 14:39:29,859 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:39:29,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:39:29,860 INFO L85 PathProgramCache]: Analyzing trace with hash 351124629, now seen corresponding path program 1 times [2021-12-17 14:39:29,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:39:29,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570202526] [2021-12-17 14:39:29,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:39:29,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:39:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:29,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-17 14:39:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:39:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:39:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:39:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:39:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:39:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:39:30,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:39:30,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570202526] [2021-12-17 14:39:30,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570202526] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:39:30,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:39:30,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:39:30,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471510290] [2021-12-17 14:39:30,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:39:30,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:39:30,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:39:30,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:39:30,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:39:30,221 INFO L87 Difference]: Start difference. First operand 588 states and 970 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-17 14:39:33,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:39:33,765 INFO L93 Difference]: Finished difference Result 1419 states and 2373 transitions. [2021-12-17 14:39:33,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 14:39:33,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2021-12-17 14:39:33,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:39:33,771 INFO L225 Difference]: With dead ends: 1419 [2021-12-17 14:39:33,772 INFO L226 Difference]: Without dead ends: 849 [2021-12-17 14:39:33,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:39:33,775 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 1941 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2028 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 2991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:39:33,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2028 Valid, 2375 Invalid, 2991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-17 14:39:33,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-12-17 14:39:33,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 588. [2021-12-17 14:39:33,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.673913043478261) internal successors, (770), 479 states have internal predecessors, (770), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-17 14:39:33,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 969 transitions. [2021-12-17 14:39:33,830 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 969 transitions. Word has length 107 [2021-12-17 14:39:33,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:39:33,831 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 969 transitions. [2021-12-17 14:39:33,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-17 14:39:33,832 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 969 transitions. [2021-12-17 14:39:33,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-17 14:39:33,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:39:33,836 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:39:33,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 14:39:33,837 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:39:33,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:39:33,837 INFO L85 PathProgramCache]: Analyzing trace with hash 401682534, now seen corresponding path program 1 times [2021-12-17 14:39:33,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:39:33,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132007420] [2021-12-17 14:39:33,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:39:33,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:39:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:33,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:33,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:33,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 14:39:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 14:39:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:39:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:39:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:39:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:39:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:39:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:39:34,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:39:34,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132007420] [2021-12-17 14:39:34,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132007420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:39:34,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:39:34,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:39:34,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810884520] [2021-12-17 14:39:34,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:39:34,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:39:34,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:39:34,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:39:34,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:39:34,141 INFO L87 Difference]: Start difference. First operand 588 states and 969 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-17 14:39:38,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:39:38,076 INFO L93 Difference]: Finished difference Result 1419 states and 2372 transitions. [2021-12-17 14:39:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 14:39:38,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2021-12-17 14:39:38,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:39:38,083 INFO L225 Difference]: With dead ends: 1419 [2021-12-17 14:39:38,084 INFO L226 Difference]: Without dead ends: 849 [2021-12-17 14:39:38,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:39:38,087 INFO L933 BasicCegarLoop]: 1005 mSDtfsCounter, 1011 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 2925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-17 14:39:38,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 2498 Invalid, 2925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-17 14:39:38,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-12-17 14:39:38,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 588. [2021-12-17 14:39:38,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.6717391304347826) internal successors, (769), 479 states have internal predecessors, (769), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-17 14:39:38,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 968 transitions. [2021-12-17 14:39:38,173 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 968 transitions. Word has length 108 [2021-12-17 14:39:38,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:39:38,174 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 968 transitions. [2021-12-17 14:39:38,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-17 14:39:38,174 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 968 transitions. [2021-12-17 14:39:38,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-17 14:39:38,177 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:39:38,177 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:39:38,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 14:39:38,177 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:39:38,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:39:38,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1268972239, now seen corresponding path program 1 times [2021-12-17 14:39:38,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:39:38,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108141490] [2021-12-17 14:39:38,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:39:38,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:39:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 14:39:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:39:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:39:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:39:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:39:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:39:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:39:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:39:38,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:39:38,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108141490] [2021-12-17 14:39:38,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108141490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:39:38,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:39:38,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:39:38,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073926861] [2021-12-17 14:39:38,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:39:38,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:39:38,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:39:38,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:39:38,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:39:38,493 INFO L87 Difference]: Start difference. First operand 588 states and 968 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-17 14:39:41,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:39:41,755 INFO L93 Difference]: Finished difference Result 1419 states and 2371 transitions. [2021-12-17 14:39:41,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 14:39:41,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2021-12-17 14:39:41,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:39:41,759 INFO L225 Difference]: With dead ends: 1419 [2021-12-17 14:39:41,759 INFO L226 Difference]: Without dead ends: 849 [2021-12-17 14:39:41,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:39:41,762 INFO L933 BasicCegarLoop]: 1001 mSDtfsCounter, 1935 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2022 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 2990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:39:41,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2022 Valid, 2358 Invalid, 2990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-17 14:39:41,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-12-17 14:39:41,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 588. [2021-12-17 14:39:41,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.6695652173913043) internal successors, (768), 479 states have internal predecessors, (768), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-17 14:39:41,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 967 transitions. [2021-12-17 14:39:41,818 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 967 transitions. Word has length 109 [2021-12-17 14:39:41,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:39:41,818 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 967 transitions. [2021-12-17 14:39:41,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-17 14:39:41,819 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 967 transitions. [2021-12-17 14:39:41,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-17 14:39:41,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:39:41,821 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:39:41,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 14:39:41,821 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:39:41,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:39:41,822 INFO L85 PathProgramCache]: Analyzing trace with hash -462645182, now seen corresponding path program 1 times [2021-12-17 14:39:41,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:39:41,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118498455] [2021-12-17 14:39:41,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:39:41,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:39:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:41,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:41,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:41,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 14:39:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:42,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:39:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:42,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:42,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:42,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:42,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:39:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:42,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:39:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:42,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:42,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:42,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:39:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:42,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:39:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:42,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:39:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:42,116 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:39:42,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:39:42,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118498455] [2021-12-17 14:39:42,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118498455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:39:42,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:39:42,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:39:42,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783149375] [2021-12-17 14:39:42,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:39:42,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:39:42,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:39:42,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:39:42,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:39:42,120 INFO L87 Difference]: Start difference. First operand 588 states and 967 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-17 14:39:45,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:39:45,860 INFO L93 Difference]: Finished difference Result 1419 states and 2370 transitions. [2021-12-17 14:39:45,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 14:39:45,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 110 [2021-12-17 14:39:45,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:39:45,864 INFO L225 Difference]: With dead ends: 1419 [2021-12-17 14:39:45,864 INFO L226 Difference]: Without dead ends: 849 [2021-12-17 14:39:45,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:39:45,867 INFO L933 BasicCegarLoop]: 1009 mSDtfsCounter, 1005 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 2639 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 2639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:39:45,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 2510 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 2639 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-17 14:39:45,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-12-17 14:39:45,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 588. [2021-12-17 14:39:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.6673913043478261) internal successors, (767), 479 states have internal predecessors, (767), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-17 14:39:45,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 966 transitions. [2021-12-17 14:39:45,904 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 966 transitions. Word has length 110 [2021-12-17 14:39:45,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:39:45,904 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 966 transitions. [2021-12-17 14:39:45,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-17 14:39:45,905 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 966 transitions. [2021-12-17 14:39:45,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-17 14:39:45,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:39:45,907 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:39:45,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 14:39:45,907 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:39:45,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:39:45,908 INFO L85 PathProgramCache]: Analyzing trace with hash -179292723, now seen corresponding path program 1 times [2021-12-17 14:39:45,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:39:45,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586116128] [2021-12-17 14:39:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:39:45,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:39:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:45,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:46,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:46,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:39:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:46,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:39:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:46,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:46,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:46,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:46,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:39:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:46,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:39:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:46,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:46,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:46,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:39:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:46,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:39:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:46,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:39:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:46,213 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:39:46,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:39:46,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586116128] [2021-12-17 14:39:46,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586116128] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:39:46,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:39:46,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:39:46,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134009721] [2021-12-17 14:39:46,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:39:46,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:39:46,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:39:46,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:39:46,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:39:46,215 INFO L87 Difference]: Start difference. First operand 588 states and 966 transitions. Second operand has 10 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:39:50,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:39:50,925 INFO L93 Difference]: Finished difference Result 1387 states and 2305 transitions. [2021-12-17 14:39:50,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 14:39:50,925 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 111 [2021-12-17 14:39:50,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:39:50,929 INFO L225 Difference]: With dead ends: 1387 [2021-12-17 14:39:50,929 INFO L226 Difference]: Without dead ends: 857 [2021-12-17 14:39:50,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-12-17 14:39:50,931 INFO L933 BasicCegarLoop]: 955 mSDtfsCounter, 1510 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 5004 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 3962 SdHoareTripleChecker+Invalid, 5516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 5004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:39:50,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1598 Valid, 3962 Invalid, 5516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 5004 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-17 14:39:50,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2021-12-17 14:39:50,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 588. [2021-12-17 14:39:50,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.6565217391304348) internal successors, (762), 479 states have internal predecessors, (762), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-17 14:39:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 961 transitions. [2021-12-17 14:39:50,987 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 961 transitions. Word has length 111 [2021-12-17 14:39:50,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:39:50,988 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 961 transitions. [2021-12-17 14:39:50,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:39:50,989 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 961 transitions. [2021-12-17 14:39:50,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-17 14:39:50,992 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:39:50,992 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:39:50,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 14:39:50,996 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:39:50,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:39:50,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1651817026, now seen corresponding path program 1 times [2021-12-17 14:39:50,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:39:50,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108620880] [2021-12-17 14:39:50,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:39:50,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:39:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:51,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:51,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:51,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:39:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:51,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 14:39:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:51,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:51,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:51,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:51,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:39:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:51,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:39:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:51,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:51,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:51,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:39:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:51,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:39:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:51,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:39:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:51,354 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:39:51,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:39:51,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108620880] [2021-12-17 14:39:51,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108620880] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:39:51,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:39:51,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:39:51,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667394330] [2021-12-17 14:39:51,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:39:51,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:39:51,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:39:51,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:39:51,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:39:51,356 INFO L87 Difference]: Start difference. First operand 588 states and 961 transitions. Second operand has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:39:55,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:39:55,961 INFO L93 Difference]: Finished difference Result 1387 states and 2300 transitions. [2021-12-17 14:39:55,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 14:39:55,961 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2021-12-17 14:39:55,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:39:55,965 INFO L225 Difference]: With dead ends: 1387 [2021-12-17 14:39:55,965 INFO L226 Difference]: Without dead ends: 857 [2021-12-17 14:39:55,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-12-17 14:39:55,970 INFO L933 BasicCegarLoop]: 943 mSDtfsCounter, 1057 mSDsluCounter, 3013 mSDsCounter, 0 mSdLazyCounter, 5050 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 3956 SdHoareTripleChecker+Invalid, 5392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 5050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-17 14:39:55,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 3956 Invalid, 5392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 5050 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-17 14:39:55,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2021-12-17 14:39:56,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 588. [2021-12-17 14:39:56,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.6456521739130434) internal successors, (757), 479 states have internal predecessors, (757), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-17 14:39:56,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 956 transitions. [2021-12-17 14:39:56,019 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 956 transitions. Word has length 112 [2021-12-17 14:39:56,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:39:56,020 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 956 transitions. [2021-12-17 14:39:56,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:39:56,021 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 956 transitions. [2021-12-17 14:39:56,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 14:39:56,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:39:56,024 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:39:56,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 14:39:56,024 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:39:56,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:39:56,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1031529806, now seen corresponding path program 1 times [2021-12-17 14:39:56,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:39:56,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43673110] [2021-12-17 14:39:56,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:39:56,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:39:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:56,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:39:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:56,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:56,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:39:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:56,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 14:39:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:56,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:56,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:56,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:56,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:39:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:56,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:39:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:56,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:56,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:39:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:56,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:39:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:56,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:39:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:56,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:39:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:39:56,353 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:39:56,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:39:56,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43673110] [2021-12-17 14:39:56,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43673110] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:39:56,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:39:56,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:39:56,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106195898] [2021-12-17 14:39:56,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:39:56,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:39:56,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:39:56,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:39:56,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:39:56,356 INFO L87 Difference]: Start difference. First operand 588 states and 956 transitions. Second operand has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:40:00,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:00,977 INFO L93 Difference]: Finished difference Result 1387 states and 2295 transitions. [2021-12-17 14:40:00,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 14:40:00,977 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2021-12-17 14:40:00,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:00,983 INFO L225 Difference]: With dead ends: 1387 [2021-12-17 14:40:00,983 INFO L226 Difference]: Without dead ends: 857 [2021-12-17 14:40:00,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-12-17 14:40:00,985 INFO L933 BasicCegarLoop]: 955 mSDtfsCounter, 1070 mSDsluCounter, 3059 mSDsCounter, 0 mSdLazyCounter, 5010 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 4014 SdHoareTripleChecker+Invalid, 5339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 5010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:00,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1158 Valid, 4014 Invalid, 5339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 5010 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-17 14:40:00,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2021-12-17 14:40:01,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 588. [2021-12-17 14:40:01,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.6347826086956523) internal successors, (752), 479 states have internal predecessors, (752), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-17 14:40:01,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 951 transitions. [2021-12-17 14:40:01,026 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 951 transitions. Word has length 113 [2021-12-17 14:40:01,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:01,026 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 951 transitions. [2021-12-17 14:40:01,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:40:01,026 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 951 transitions. [2021-12-17 14:40:01,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-17 14:40:01,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:01,033 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:01,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 14:40:01,034 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:01,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:01,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1655596120, now seen corresponding path program 1 times [2021-12-17 14:40:01,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:01,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124910332] [2021-12-17 14:40:01,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:01,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:01,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:01,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:01,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:01,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-17 14:40:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:01,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:01,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:01,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:01,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:01,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:40:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:01,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:01,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:01,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:01,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:40:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:01,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:40:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:40:01,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:01,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124910332] [2021-12-17 14:40:01,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124910332] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:01,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:01,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:40:01,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257097712] [2021-12-17 14:40:01,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:01,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:40:01,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:01,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:40:01,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:40:01,363 INFO L87 Difference]: Start difference. First operand 588 states and 951 transitions. Second operand has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:40:06,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:06,272 INFO L93 Difference]: Finished difference Result 1402 states and 2313 transitions. [2021-12-17 14:40:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 14:40:06,273 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2021-12-17 14:40:06,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:06,276 INFO L225 Difference]: With dead ends: 1402 [2021-12-17 14:40:06,276 INFO L226 Difference]: Without dead ends: 878 [2021-12-17 14:40:06,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:40:06,278 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 1069 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 4964 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 4043 SdHoareTripleChecker+Invalid, 5262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 4964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:06,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1157 Valid, 4043 Invalid, 5262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 4964 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-17 14:40:06,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-12-17 14:40:06,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 590. [2021-12-17 14:40:06,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 462 states have (on average 1.632034632034632) internal successors, (754), 481 states have internal predecessors, (754), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-17 14:40:06,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 953 transitions. [2021-12-17 14:40:06,331 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 953 transitions. Word has length 114 [2021-12-17 14:40:06,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:06,332 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 953 transitions. [2021-12-17 14:40:06,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:40:06,332 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 953 transitions. [2021-12-17 14:40:06,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-17 14:40:06,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:06,334 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:06,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 14:40:06,335 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:06,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:06,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1929109881, now seen corresponding path program 1 times [2021-12-17 14:40:06,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:06,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483444175] [2021-12-17 14:40:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:06,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-17 14:40:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:40:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:40:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:40:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:40:06,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:06,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483444175] [2021-12-17 14:40:06,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483444175] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:06,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:06,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:40:06,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657677230] [2021-12-17 14:40:06,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:06,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:40:06,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:06,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:40:06,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:40:06,621 INFO L87 Difference]: Start difference. First operand 590 states and 953 transitions. Second operand has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:40:10,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:10,706 INFO L93 Difference]: Finished difference Result 1393 states and 2296 transitions. [2021-12-17 14:40:10,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 14:40:10,706 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2021-12-17 14:40:10,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:10,709 INFO L225 Difference]: With dead ends: 1393 [2021-12-17 14:40:10,709 INFO L226 Difference]: Without dead ends: 861 [2021-12-17 14:40:10,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-12-17 14:40:10,711 INFO L933 BasicCegarLoop]: 950 mSDtfsCounter, 1997 mSDsluCounter, 2915 mSDsCounter, 0 mSdLazyCounter, 4712 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2085 SdHoareTripleChecker+Valid, 3865 SdHoareTripleChecker+Invalid, 5370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 4712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:10,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2085 Valid, 3865 Invalid, 5370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 4712 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-17 14:40:10,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2021-12-17 14:40:10,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 590. [2021-12-17 14:40:10,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 462 states have (on average 1.621212121212121) internal successors, (749), 481 states have internal predecessors, (749), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-17 14:40:10,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 948 transitions. [2021-12-17 14:40:10,752 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 948 transitions. Word has length 114 [2021-12-17 14:40:10,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:10,752 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 948 transitions. [2021-12-17 14:40:10,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:40:10,752 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 948 transitions. [2021-12-17 14:40:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 14:40:10,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:10,754 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:10,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 14:40:10,755 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:10,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:10,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1108944620, now seen corresponding path program 1 times [2021-12-17 14:40:10,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:10,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371414603] [2021-12-17 14:40:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:10,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:10,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:10,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:10,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:40:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:40:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:40:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:40:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:11,037 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:40:11,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:11,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371414603] [2021-12-17 14:40:11,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371414603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:11,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:11,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:40:11,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479125838] [2021-12-17 14:40:11,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:11,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:40:11,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:11,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:40:11,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:40:11,039 INFO L87 Difference]: Start difference. First operand 590 states and 948 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:40:15,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:15,709 INFO L93 Difference]: Finished difference Result 1406 states and 2310 transitions. [2021-12-17 14:40:15,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 14:40:15,710 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2021-12-17 14:40:15,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:15,713 INFO L225 Difference]: With dead ends: 1406 [2021-12-17 14:40:15,713 INFO L226 Difference]: Without dead ends: 882 [2021-12-17 14:40:15,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:40:15,715 INFO L933 BasicCegarLoop]: 956 mSDtfsCounter, 1075 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 4906 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 3960 SdHoareTripleChecker+Invalid, 5208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 4906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:15,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 3960 Invalid, 5208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 4906 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-17 14:40:15,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2021-12-17 14:40:15,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 593. [2021-12-17 14:40:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 465 states have (on average 1.6172043010752688) internal successors, (752), 484 states have internal predecessors, (752), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-17 14:40:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 951 transitions. [2021-12-17 14:40:15,772 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 951 transitions. Word has length 115 [2021-12-17 14:40:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:15,773 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 951 transitions. [2021-12-17 14:40:15,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:40:15,773 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 951 transitions. [2021-12-17 14:40:15,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 14:40:15,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:15,775 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:15,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 14:40:15,776 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:15,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:15,776 INFO L85 PathProgramCache]: Analyzing trace with hash 992471959, now seen corresponding path program 1 times [2021-12-17 14:40:15,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:15,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055834798] [2021-12-17 14:40:15,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:15,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:15,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:15,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:15,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:40:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:40:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:40:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:40:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:40:16,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:16,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055834798] [2021-12-17 14:40:16,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055834798] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:16,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:16,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:40:16,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314670304] [2021-12-17 14:40:16,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:16,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:40:16,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:16,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:40:16,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:40:16,074 INFO L87 Difference]: Start difference. First operand 593 states and 951 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:40:20,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:20,405 INFO L93 Difference]: Finished difference Result 1402 states and 2300 transitions. [2021-12-17 14:40:20,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 14:40:20,406 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2021-12-17 14:40:20,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:20,409 INFO L225 Difference]: With dead ends: 1402 [2021-12-17 14:40:20,409 INFO L226 Difference]: Without dead ends: 867 [2021-12-17 14:40:20,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-12-17 14:40:20,411 INFO L933 BasicCegarLoop]: 943 mSDtfsCounter, 1533 mSDsluCounter, 2947 mSDsCounter, 0 mSdLazyCounter, 4854 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 3890 SdHoareTripleChecker+Invalid, 5335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 4854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:20,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1621 Valid, 3890 Invalid, 5335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 4854 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-17 14:40:20,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-12-17 14:40:20,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 593. [2021-12-17 14:40:20,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 465 states have (on average 1.6064516129032258) internal successors, (747), 484 states have internal predecessors, (747), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-17 14:40:20,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 946 transitions. [2021-12-17 14:40:20,454 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 946 transitions. Word has length 115 [2021-12-17 14:40:20,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:20,455 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 946 transitions. [2021-12-17 14:40:20,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:40:20,455 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 946 transitions. [2021-12-17 14:40:20,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-17 14:40:20,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:20,473 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:20,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 14:40:20,474 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:20,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:20,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1201106093, now seen corresponding path program 1 times [2021-12-17 14:40:20,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:20,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849490795] [2021-12-17 14:40:20,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:20,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:40:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:40:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:40:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:40:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:20,779 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:40:20,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:20,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849490795] [2021-12-17 14:40:20,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849490795] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:20,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:20,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:40:20,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656189509] [2021-12-17 14:40:20,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:20,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:40:20,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:20,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:40:20,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:40:20,781 INFO L87 Difference]: Start difference. First operand 593 states and 946 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:40:25,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:25,412 INFO L93 Difference]: Finished difference Result 1412 states and 2309 transitions. [2021-12-17 14:40:25,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 14:40:25,412 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2021-12-17 14:40:25,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:25,416 INFO L225 Difference]: With dead ends: 1412 [2021-12-17 14:40:25,416 INFO L226 Difference]: Without dead ends: 888 [2021-12-17 14:40:25,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:40:25,418 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 1523 mSDsluCounter, 2959 mSDsCounter, 0 mSdLazyCounter, 4805 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 3916 SdHoareTripleChecker+Invalid, 5280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 4805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:25,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1611 Valid, 3916 Invalid, 5280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 4805 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-17 14:40:25,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2021-12-17 14:40:25,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 597. [2021-12-17 14:40:25,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 469 states have (on average 1.6012793176972282) internal successors, (751), 488 states have internal predecessors, (751), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-17 14:40:25,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 950 transitions. [2021-12-17 14:40:25,477 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 950 transitions. Word has length 116 [2021-12-17 14:40:25,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:25,477 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 950 transitions. [2021-12-17 14:40:25,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:40:25,478 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 950 transitions. [2021-12-17 14:40:25,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-17 14:40:25,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:25,480 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:25,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 14:40:25,480 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:25,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:25,480 INFO L85 PathProgramCache]: Analyzing trace with hash 2048988876, now seen corresponding path program 1 times [2021-12-17 14:40:25,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:25,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739071674] [2021-12-17 14:40:25,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:25,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:25,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:25,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:25,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:25,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:40:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:25,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:25,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:25,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:25,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:25,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:40:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:25,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:25,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:25,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:25,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:40:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:25,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:40:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:40:25,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:25,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739071674] [2021-12-17 14:40:25,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739071674] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:25,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:25,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:40:25,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218957778] [2021-12-17 14:40:25,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:25,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:40:25,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:25,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:40:25,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:40:25,759 INFO L87 Difference]: Start difference. First operand 597 states and 950 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:40:30,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:30,259 INFO L93 Difference]: Finished difference Result 1410 states and 2303 transitions. [2021-12-17 14:40:30,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 14:40:30,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2021-12-17 14:40:30,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:30,263 INFO L225 Difference]: With dead ends: 1410 [2021-12-17 14:40:30,263 INFO L226 Difference]: Without dead ends: 889 [2021-12-17 14:40:30,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-17 14:40:30,266 INFO L933 BasicCegarLoop]: 982 mSDtfsCounter, 1534 mSDsluCounter, 2983 mSDsCounter, 0 mSdLazyCounter, 4828 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 3965 SdHoareTripleChecker+Invalid, 5285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 4828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:30,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1622 Valid, 3965 Invalid, 5285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 4828 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-17 14:40:30,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2021-12-17 14:40:30,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 608. [2021-12-17 14:40:30,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 477 states have (on average 1.5953878406708595) internal successors, (761), 498 states have internal predecessors, (761), 103 states have call successors, (103), 26 states have call predecessors, (103), 27 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2021-12-17 14:40:30,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 964 transitions. [2021-12-17 14:40:30,352 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 964 transitions. Word has length 116 [2021-12-17 14:40:30,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:30,353 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 964 transitions. [2021-12-17 14:40:30,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:40:30,353 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 964 transitions. [2021-12-17 14:40:30,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-17 14:40:30,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:30,355 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:30,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 14:40:30,356 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:30,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:30,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1730457971, now seen corresponding path program 1 times [2021-12-17 14:40:30,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:30,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340098469] [2021-12-17 14:40:30,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:30,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:30,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:30,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:30,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:30,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:40:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:30,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:30,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:30,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:30,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:30,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:40:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:30,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:30,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:30,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:30,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:40:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:30,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:40:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:30,636 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:40:30,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:30,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340098469] [2021-12-17 14:40:30,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340098469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:30,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:30,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:40:30,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047390566] [2021-12-17 14:40:30,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:30,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:40:30,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:30,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:40:30,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:40:30,638 INFO L87 Difference]: Start difference. First operand 608 states and 964 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-17 14:40:34,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:34,186 INFO L93 Difference]: Finished difference Result 1467 states and 2371 transitions. [2021-12-17 14:40:34,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 14:40:34,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2021-12-17 14:40:34,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:34,190 INFO L225 Difference]: With dead ends: 1467 [2021-12-17 14:40:34,190 INFO L226 Difference]: Without dead ends: 857 [2021-12-17 14:40:34,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:40:34,192 INFO L933 BasicCegarLoop]: 970 mSDtfsCounter, 978 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:34,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1065 Valid, 2456 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-17 14:40:34,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2021-12-17 14:40:34,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 589. [2021-12-17 14:40:34,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 461 states have (on average 1.6030368763557483) internal successors, (739), 480 states have internal predecessors, (739), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-17 14:40:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 938 transitions. [2021-12-17 14:40:34,243 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 938 transitions. Word has length 116 [2021-12-17 14:40:34,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:34,243 INFO L470 AbstractCegarLoop]: Abstraction has 589 states and 938 transitions. [2021-12-17 14:40:34,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-17 14:40:34,243 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 938 transitions. [2021-12-17 14:40:34,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-17 14:40:34,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:34,245 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:34,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 14:40:34,246 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:34,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:34,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1953009735, now seen corresponding path program 1 times [2021-12-17 14:40:34,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:34,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963550684] [2021-12-17 14:40:34,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:34,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:34,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:34,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:34,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-17 14:40:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:34,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:34,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:34,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:34,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:34,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:40:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:34,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:34,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:34,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:34,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:40:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:34,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:40:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:40:34,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:34,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963550684] [2021-12-17 14:40:34,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963550684] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:34,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:34,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 14:40:34,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291091015] [2021-12-17 14:40:34,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:34,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:40:34,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:34,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:40:34,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:40:34,595 INFO L87 Difference]: Start difference. First operand 589 states and 938 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:40:38,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:38,921 INFO L93 Difference]: Finished difference Result 1402 states and 2286 transitions. [2021-12-17 14:40:38,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 14:40:38,921 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2021-12-17 14:40:38,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:38,925 INFO L225 Difference]: With dead ends: 1402 [2021-12-17 14:40:38,925 INFO L226 Difference]: Without dead ends: 878 [2021-12-17 14:40:38,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:40:38,927 INFO L933 BasicCegarLoop]: 950 mSDtfsCounter, 1496 mSDsluCounter, 2956 mSDsCounter, 0 mSdLazyCounter, 4630 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 3906 SdHoareTripleChecker+Invalid, 5094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 4630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:38,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1583 Valid, 3906 Invalid, 5094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 4630 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-17 14:40:38,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-12-17 14:40:38,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 594. [2021-12-17 14:40:38,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 466 states have (on average 1.5965665236051503) internal successors, (744), 485 states have internal predecessors, (744), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-17 14:40:38,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 943 transitions. [2021-12-17 14:40:38,983 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 943 transitions. Word has length 117 [2021-12-17 14:40:38,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:38,983 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 943 transitions. [2021-12-17 14:40:38,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:40:38,984 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 943 transitions. [2021-12-17 14:40:38,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-17 14:40:38,986 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:38,986 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:38,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 14:40:38,987 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:38,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:38,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2048301696, now seen corresponding path program 1 times [2021-12-17 14:40:38,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:38,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102457616] [2021-12-17 14:40:38,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:38,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:39,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:39,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:39,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:39,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:40:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:39,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:39,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:39,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:39,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:39,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:40:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:39,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:39,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:39,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:39,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:40:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:39,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:40:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:39,268 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:40:39,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:39,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102457616] [2021-12-17 14:40:39,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102457616] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:39,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:39,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:40:39,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017612381] [2021-12-17 14:40:39,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:39,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:40:39,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:39,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:40:39,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:40:39,269 INFO L87 Difference]: Start difference. First operand 594 states and 943 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-17 14:40:42,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:42,808 INFO L93 Difference]: Finished difference Result 1400 states and 2281 transitions. [2021-12-17 14:40:42,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 14:40:42,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2021-12-17 14:40:42,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:42,812 INFO L225 Difference]: With dead ends: 1400 [2021-12-17 14:40:42,812 INFO L226 Difference]: Without dead ends: 855 [2021-12-17 14:40:42,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:40:42,814 INFO L933 BasicCegarLoop]: 947 mSDtfsCounter, 1017 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2465 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:42,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1104 Valid, 2435 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2465 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-17 14:40:42,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-12-17 14:40:42,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 594. [2021-12-17 14:40:42,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 466 states have (on average 1.5879828326180256) internal successors, (740), 485 states have internal predecessors, (740), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-17 14:40:42,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 939 transitions. [2021-12-17 14:40:42,869 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 939 transitions. Word has length 118 [2021-12-17 14:40:42,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:42,869 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 939 transitions. [2021-12-17 14:40:42,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-17 14:40:42,869 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 939 transitions. [2021-12-17 14:40:42,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-17 14:40:42,871 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:42,871 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:42,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 14:40:42,872 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:42,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:42,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1053607998, now seen corresponding path program 1 times [2021-12-17 14:40:42,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:42,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58334967] [2021-12-17 14:40:42,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:42,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:42,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:42,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:42,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:43,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:40:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:43,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:43,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:43,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:43,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:43,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:40:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:43,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:43,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:43,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:43,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:40:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:43,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:40:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 14:40:43,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:43,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58334967] [2021-12-17 14:40:43,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58334967] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:43,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:43,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 14:40:43,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159328010] [2021-12-17 14:40:43,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:43,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 14:40:43,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:43,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 14:40:43,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 14:40:43,141 INFO L87 Difference]: Start difference. First operand 594 states and 939 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:40:48,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:48,496 INFO L93 Difference]: Finished difference Result 2062 states and 3448 transitions. [2021-12-17 14:40:48,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 14:40:48,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 118 [2021-12-17 14:40:48,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:48,503 INFO L225 Difference]: With dead ends: 2062 [2021-12-17 14:40:48,504 INFO L226 Difference]: Without dead ends: 1546 [2021-12-17 14:40:48,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-12-17 14:40:48,505 INFO L933 BasicCegarLoop]: 1605 mSDtfsCounter, 3268 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 1603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3281 SdHoareTripleChecker+Valid, 2530 SdHoareTripleChecker+Invalid, 3939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1603 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:48,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3281 Valid, 2530 Invalid, 3939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1603 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-17 14:40:48,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2021-12-17 14:40:48,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1147. [2021-12-17 14:40:48,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 896 states have (on average 1.6272321428571428) internal successors, (1458), 928 states have internal predecessors, (1458), 202 states have call successors, (202), 46 states have call predecessors, (202), 48 states have return successors, (206), 196 states have call predecessors, (206), 197 states have call successors, (206) [2021-12-17 14:40:48,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1866 transitions. [2021-12-17 14:40:48,630 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1866 transitions. Word has length 118 [2021-12-17 14:40:48,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:48,630 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 1866 transitions. [2021-12-17 14:40:48,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-17 14:40:48,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1866 transitions. [2021-12-17 14:40:48,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-17 14:40:48,632 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:48,632 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:48,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 14:40:48,633 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:48,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:48,633 INFO L85 PathProgramCache]: Analyzing trace with hash 869620036, now seen corresponding path program 1 times [2021-12-17 14:40:48,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:48,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123565475] [2021-12-17 14:40:48,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:48,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:48,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:48,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:48,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:48,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:40:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:48,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:48,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:48,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:48,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:48,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:40:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:48,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:48,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:48,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 14:40:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-17 14:40:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:48,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:40:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 14:40:48,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:48,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123565475] [2021-12-17 14:40:48,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123565475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:48,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:48,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 14:40:48,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979197709] [2021-12-17 14:40:48,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:48,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 14:40:48,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:48,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 14:40:48,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:40:48,967 INFO L87 Difference]: Start difference. First operand 1147 states and 1866 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-17 14:40:53,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:53,394 INFO L93 Difference]: Finished difference Result 2597 states and 4413 transitions. [2021-12-17 14:40:53,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 14:40:53,394 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2021-12-17 14:40:53,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:53,409 INFO L225 Difference]: With dead ends: 2597 [2021-12-17 14:40:53,409 INFO L226 Difference]: Without dead ends: 1528 [2021-12-17 14:40:53,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-12-17 14:40:53,413 INFO L933 BasicCegarLoop]: 940 mSDtfsCounter, 1855 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 3490 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 4183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 3490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:53,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1865 Valid, 2690 Invalid, 4183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 3490 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-17 14:40:53,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-12-17 14:40:53,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1155. [2021-12-17 14:40:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 902 states have (on average 1.623059866962306) internal successors, (1464), 934 states have internal predecessors, (1464), 202 states have call successors, (202), 48 states have call predecessors, (202), 50 states have return successors, (208), 196 states have call predecessors, (208), 197 states have call successors, (208) [2021-12-17 14:40:53,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1874 transitions. [2021-12-17 14:40:53,539 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1874 transitions. Word has length 118 [2021-12-17 14:40:53,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:53,539 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 1874 transitions. [2021-12-17 14:40:53,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-17 14:40:53,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1874 transitions. [2021-12-17 14:40:53,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-17 14:40:53,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:53,541 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:53,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 14:40:53,542 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:53,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:53,542 INFO L85 PathProgramCache]: Analyzing trace with hash -2004879898, now seen corresponding path program 1 times [2021-12-17 14:40:53,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:53,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801808521] [2021-12-17 14:40:53,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:53,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:53,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:53,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:53,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:53,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:40:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:53,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:53,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:53,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:53,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:40:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:53,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 14:40:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:53,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:53,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:53,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 14:40:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:53,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 14:40:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:53,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:40:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 14:40:53,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:53,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801808521] [2021-12-17 14:40:53,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801808521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:53,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:53,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 14:40:53,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723934815] [2021-12-17 14:40:53,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:53,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 14:40:53,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:53,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 14:40:53,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:40:53,885 INFO L87 Difference]: Start difference. First operand 1155 states and 1874 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 6 states have internal predecessors, (86), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-17 14:40:57,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:40:57,946 INFO L93 Difference]: Finished difference Result 2615 states and 4423 transitions. [2021-12-17 14:40:57,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 14:40:57,946 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 6 states have internal predecessors, (86), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2021-12-17 14:40:57,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:40:57,953 INFO L225 Difference]: With dead ends: 2615 [2021-12-17 14:40:57,954 INFO L226 Difference]: Without dead ends: 1538 [2021-12-17 14:40:57,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-12-17 14:40:57,962 INFO L933 BasicCegarLoop]: 950 mSDtfsCounter, 2743 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 3267 mSolverCounterSat, 1007 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2753 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 4274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1007 IncrementalHoareTripleChecker+Valid, 3267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:40:57,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2753 Valid, 2596 Invalid, 4274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1007 Valid, 3267 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-17 14:40:57,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2021-12-17 14:40:58,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1165. [2021-12-17 14:40:58,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 910 states have (on average 1.6175824175824176) internal successors, (1472), 942 states have internal predecessors, (1472), 202 states have call successors, (202), 50 states have call predecessors, (202), 52 states have return successors, (210), 196 states have call predecessors, (210), 197 states have call successors, (210) [2021-12-17 14:40:58,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1884 transitions. [2021-12-17 14:40:58,125 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1884 transitions. Word has length 120 [2021-12-17 14:40:58,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:40:58,126 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 1884 transitions. [2021-12-17 14:40:58,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 6 states have internal predecessors, (86), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-17 14:40:58,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1884 transitions. [2021-12-17 14:40:58,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-17 14:40:58,128 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:40:58,128 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:40:58,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 14:40:58,129 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:40:58,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:40:58,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1716398020, now seen corresponding path program 1 times [2021-12-17 14:40:58,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:40:58,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238285698] [2021-12-17 14:40:58,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:40:58,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:40:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:58,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:40:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:58,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:58,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:40:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:58,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:40:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:58,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:58,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:58,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:58,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:40:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:58,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 14:40:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:58,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:58,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:40:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:58,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 14:40:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:58,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-17 14:40:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:58,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 14:40:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:40:58,423 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 14:40:58,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:40:58,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238285698] [2021-12-17 14:40:58,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238285698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:40:58,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:40:58,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 14:40:58,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963672853] [2021-12-17 14:40:58,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:40:58,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 14:40:58,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:40:58,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 14:40:58,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:40:58,426 INFO L87 Difference]: Start difference. First operand 1165 states and 1884 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 6 states have internal predecessors, (88), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-17 14:41:02,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:41:02,688 INFO L93 Difference]: Finished difference Result 2637 states and 4437 transitions. [2021-12-17 14:41:02,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 14:41:02,689 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 6 states have internal predecessors, (88), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2021-12-17 14:41:02,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:41:02,695 INFO L225 Difference]: With dead ends: 2637 [2021-12-17 14:41:02,696 INFO L226 Difference]: Without dead ends: 1550 [2021-12-17 14:41:02,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-12-17 14:41:02,700 INFO L933 BasicCegarLoop]: 940 mSDtfsCounter, 2304 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 3420 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 2629 SdHoareTripleChecker+Invalid, 4271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 3420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-17 14:41:02,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2314 Valid, 2629 Invalid, 4271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 3420 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-17 14:41:02,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2021-12-17 14:41:02,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1177. [2021-12-17 14:41:02,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 920 states have (on average 1.6108695652173912) internal successors, (1482), 952 states have internal predecessors, (1482), 202 states have call successors, (202), 52 states have call predecessors, (202), 54 states have return successors, (212), 196 states have call predecessors, (212), 197 states have call successors, (212) [2021-12-17 14:41:02,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1896 transitions. [2021-12-17 14:41:02,834 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1896 transitions. Word has length 122 [2021-12-17 14:41:02,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:41:02,834 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1896 transitions. [2021-12-17 14:41:02,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 6 states have internal predecessors, (88), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-17 14:41:02,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1896 transitions. [2021-12-17 14:41:02,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 14:41:02,837 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:41:02,837 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:41:02,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 14:41:02,837 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:41:02,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:41:02,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1726082210, now seen corresponding path program 1 times [2021-12-17 14:41:02,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:41:02,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607225965] [2021-12-17 14:41:02,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:41:02,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:41:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:02,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:41:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:02,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:02,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:41:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:03,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:41:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:03,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:03,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:03,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:03,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:41:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:03,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:41:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:03,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:03,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:03,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 14:41:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:03,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 14:41:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:03,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 14:41:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 14:41:03,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:41:03,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607225965] [2021-12-17 14:41:03,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607225965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:41:03,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:41:03,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 14:41:03,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359010638] [2021-12-17 14:41:03,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:41:03,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 14:41:03,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:41:03,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 14:41:03,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:41:03,124 INFO L87 Difference]: Start difference. First operand 1177 states and 1896 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-17 14:41:07,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:41:07,600 INFO L93 Difference]: Finished difference Result 2663 states and 4455 transitions. [2021-12-17 14:41:07,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 14:41:07,601 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 124 [2021-12-17 14:41:07,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:41:07,630 INFO L225 Difference]: With dead ends: 2663 [2021-12-17 14:41:07,630 INFO L226 Difference]: Without dead ends: 1564 [2021-12-17 14:41:07,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-12-17 14:41:07,634 INFO L933 BasicCegarLoop]: 948 mSDtfsCounter, 1848 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 3510 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 4179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 3510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:41:07,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1858 Valid, 2716 Invalid, 4179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 3510 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-17 14:41:07,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2021-12-17 14:41:07,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1191. [2021-12-17 14:41:07,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 932 states have (on average 1.6030042918454936) internal successors, (1494), 964 states have internal predecessors, (1494), 202 states have call successors, (202), 54 states have call predecessors, (202), 56 states have return successors, (214), 196 states have call predecessors, (214), 197 states have call successors, (214) [2021-12-17 14:41:07,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1910 transitions. [2021-12-17 14:41:07,766 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1910 transitions. Word has length 124 [2021-12-17 14:41:07,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:41:07,766 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 1910 transitions. [2021-12-17 14:41:07,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-17 14:41:07,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1910 transitions. [2021-12-17 14:41:07,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-17 14:41:07,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:41:07,769 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:41:07,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 14:41:07,769 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:41:07,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:41:07,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1177199684, now seen corresponding path program 1 times [2021-12-17 14:41:07,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:41:07,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798836748] [2021-12-17 14:41:07,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:41:07,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:41:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:07,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:41:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:07,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:07,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:41:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:41:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:41:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-17 14:41:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:41:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:41:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:41:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-17 14:41:08,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:41:08,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798836748] [2021-12-17 14:41:08,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798836748] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:41:08,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764337452] [2021-12-17 14:41:08,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:41:08,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:41:08,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:41:08,118 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) [2021-12-17 14:41:08,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 14:41:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:08,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 14:41:08,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:41:08,705 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-17 14:41:08,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:41:08,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764337452] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:41:08,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:41:08,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 17 [2021-12-17 14:41:08,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075394189] [2021-12-17 14:41:08,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:41:08,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 14:41:08,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:41:08,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 14:41:08,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-12-17 14:41:08,707 INFO L87 Difference]: Start difference. First operand 1191 states and 1910 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-17 14:41:09,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:41:09,060 INFO L93 Difference]: Finished difference Result 1272 states and 2038 transitions. [2021-12-17 14:41:09,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 14:41:09,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 126 [2021-12-17 14:41:09,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:41:09,066 INFO L225 Difference]: With dead ends: 1272 [2021-12-17 14:41:09,066 INFO L226 Difference]: Without dead ends: 1257 [2021-12-17 14:41:09,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-12-17 14:41:09,068 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 942 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:41:09,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 1646 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 14:41:09,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2021-12-17 14:41:09,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1197. [2021-12-17 14:41:09,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 938 states have (on average 1.5991471215351811) internal successors, (1500), 970 states have internal predecessors, (1500), 202 states have call successors, (202), 54 states have call predecessors, (202), 56 states have return successors, (214), 196 states have call predecessors, (214), 197 states have call successors, (214) [2021-12-17 14:41:09,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1916 transitions. [2021-12-17 14:41:09,201 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1916 transitions. Word has length 126 [2021-12-17 14:41:09,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:41:09,202 INFO L470 AbstractCegarLoop]: Abstraction has 1197 states and 1916 transitions. [2021-12-17 14:41:09,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-17 14:41:09,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1916 transitions. [2021-12-17 14:41:09,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-17 14:41:09,204 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:41:09,204 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:41:09,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-17 14:41:09,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-17 14:41:09,419 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:41:09,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:41:09,420 INFO L85 PathProgramCache]: Analyzing trace with hash -153685569, now seen corresponding path program 1 times [2021-12-17 14:41:09,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:41:09,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741131788] [2021-12-17 14:41:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:41:09,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:41:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:09,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:41:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:09,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:09,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:41:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:09,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:41:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:09,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:09,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:09,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:09,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:41:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:09,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-17 14:41:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:09,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:09,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:09,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:41:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:09,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:41:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:09,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:41:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:09,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 14:41:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-17 14:41:09,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:41:09,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741131788] [2021-12-17 14:41:09,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741131788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:41:09,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:41:09,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 14:41:09,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061109540] [2021-12-17 14:41:09,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:41:09,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 14:41:09,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:41:09,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 14:41:09,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:41:09,761 INFO L87 Difference]: Start difference. First operand 1197 states and 1916 transitions. Second operand has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-17 14:41:18,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:41:18,148 INFO L93 Difference]: Finished difference Result 3382 states and 5660 transitions. [2021-12-17 14:41:18,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-12-17 14:41:18,149 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) Word has length 132 [2021-12-17 14:41:18,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:41:18,168 INFO L225 Difference]: With dead ends: 3382 [2021-12-17 14:41:18,168 INFO L226 Difference]: Without dead ends: 3367 [2021-12-17 14:41:18,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=455, Invalid=1707, Unknown=0, NotChecked=0, Total=2162 [2021-12-17 14:41:18,171 INFO L933 BasicCegarLoop]: 960 mSDtfsCounter, 5832 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 5441 mSolverCounterSat, 2403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5871 SdHoareTripleChecker+Valid, 3225 SdHoareTripleChecker+Invalid, 7844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2403 IncrementalHoareTripleChecker+Valid, 5441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:41:18,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5871 Valid, 3225 Invalid, 7844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2403 Valid, 5441 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-12-17 14:41:18,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2021-12-17 14:41:18,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 1197. [2021-12-17 14:41:18,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 938 states have (on average 1.5970149253731343) internal successors, (1498), 970 states have internal predecessors, (1498), 202 states have call successors, (202), 54 states have call predecessors, (202), 56 states have return successors, (214), 196 states have call predecessors, (214), 197 states have call successors, (214) [2021-12-17 14:41:18,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1914 transitions. [2021-12-17 14:41:18,373 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1914 transitions. Word has length 132 [2021-12-17 14:41:18,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:41:18,373 INFO L470 AbstractCegarLoop]: Abstraction has 1197 states and 1914 transitions. [2021-12-17 14:41:18,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-17 14:41:18,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1914 transitions. [2021-12-17 14:41:18,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-17 14:41:18,376 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:41:18,376 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:41:18,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 14:41:18,376 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:41:18,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:41:18,376 INFO L85 PathProgramCache]: Analyzing trace with hash 865372949, now seen corresponding path program 1 times [2021-12-17 14:41:18,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:41:18,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702208718] [2021-12-17 14:41:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:41:18,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:41:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:18,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:41:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:18,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:18,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:41:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:18,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:41:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:18,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:18,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:18,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:18,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:41:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:18,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-17 14:41:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:18,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:18,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:18,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:41:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:18,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:41:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:18,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:41:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:18,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 14:41:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:18,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 14:41:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:18,694 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-17 14:41:18,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:41:18,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702208718] [2021-12-17 14:41:18,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702208718] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:41:18,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119755718] [2021-12-17 14:41:18,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:41:18,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:41:18,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:41:18,696 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) [2021-12-17 14:41:18,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 14:41:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:18,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 1501 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-17 14:41:18,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:41:19,263 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-17 14:41:19,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:41:19,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119755718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:41:19,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:41:19,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 20 [2021-12-17 14:41:19,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769681271] [2021-12-17 14:41:19,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:41:19,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 14:41:19,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:41:19,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 14:41:19,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-12-17 14:41:19,265 INFO L87 Difference]: Start difference. First operand 1197 states and 1914 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-17 14:41:21,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:41:21,139 INFO L93 Difference]: Finished difference Result 2452 states and 3971 transitions. [2021-12-17 14:41:21,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 14:41:21,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 143 [2021-12-17 14:41:21,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:41:21,146 INFO L225 Difference]: With dead ends: 2452 [2021-12-17 14:41:21,146 INFO L226 Difference]: Without dead ends: 1333 [2021-12-17 14:41:21,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2021-12-17 14:41:21,151 INFO L933 BasicCegarLoop]: 1629 mSDtfsCounter, 3368 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 3135 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3472 SdHoareTripleChecker+Valid, 2632 SdHoareTripleChecker+Invalid, 3993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 3135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:41:21,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3472 Valid, 2632 Invalid, 3993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 3135 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 14:41:21,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2021-12-17 14:41:21,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1221. [2021-12-17 14:41:21,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 954 states have (on average 1.5880503144654088) internal successors, (1515), 990 states have internal predecessors, (1515), 206 states have call successors, (206), 56 states have call predecessors, (206), 60 states have return successors, (223), 200 states have call predecessors, (223), 201 states have call successors, (223) [2021-12-17 14:41:21,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1944 transitions. [2021-12-17 14:41:21,303 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1944 transitions. Word has length 143 [2021-12-17 14:41:21,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:41:21,303 INFO L470 AbstractCegarLoop]: Abstraction has 1221 states and 1944 transitions. [2021-12-17 14:41:21,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-17 14:41:21,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1944 transitions. [2021-12-17 14:41:21,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-17 14:41:21,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:41:21,306 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:41:21,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-17 14:41:21,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-17 14:41:21,506 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:41:21,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:41:21,507 INFO L85 PathProgramCache]: Analyzing trace with hash 914578033, now seen corresponding path program 1 times [2021-12-17 14:41:21,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:41:21,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030465054] [2021-12-17 14:41:21,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:41:21,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:41:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:21,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:41:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:21,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:21,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:41:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:21,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:41:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:21,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:21,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:21,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:21,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:41:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:21,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-17 14:41:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:21,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:21,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:21,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:41:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:21,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:41:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:21,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:41:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:21,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 14:41:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:21,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 14:41:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:22,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:41:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:22,004 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-17 14:41:22,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:41:22,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030465054] [2021-12-17 14:41:22,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030465054] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:41:22,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464483654] [2021-12-17 14:41:22,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:41:22,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:41:22,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:41:22,006 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) [2021-12-17 14:41:22,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 14:41:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:22,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-17 14:41:22,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:41:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 14:41:22,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:41:22,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464483654] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:41:22,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:41:22,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [21] total 24 [2021-12-17 14:41:22,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940255582] [2021-12-17 14:41:22,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:41:22,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 14:41:22,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:41:22,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 14:41:22,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2021-12-17 14:41:22,436 INFO L87 Difference]: Start difference. First operand 1221 states and 1944 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-17 14:41:22,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:41:22,618 INFO L93 Difference]: Finished difference Result 1320 states and 2089 transitions. [2021-12-17 14:41:22,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:41:22,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 148 [2021-12-17 14:41:22,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:41:22,623 INFO L225 Difference]: With dead ends: 1320 [2021-12-17 14:41:22,623 INFO L226 Difference]: Without dead ends: 1305 [2021-12-17 14:41:22,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2021-12-17 14:41:22,624 INFO L933 BasicCegarLoop]: 968 mSDtfsCounter, 67 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3804 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:41:22,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 3804 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:41:22,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2021-12-17 14:41:22,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1227. [2021-12-17 14:41:22,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 960 states have (on average 1.584375) internal successors, (1521), 996 states have internal predecessors, (1521), 206 states have call successors, (206), 56 states have call predecessors, (206), 60 states have return successors, (223), 200 states have call predecessors, (223), 201 states have call successors, (223) [2021-12-17 14:41:22,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1950 transitions. [2021-12-17 14:41:22,777 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1950 transitions. Word has length 148 [2021-12-17 14:41:22,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:41:22,778 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 1950 transitions. [2021-12-17 14:41:22,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-17 14:41:22,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1950 transitions. [2021-12-17 14:41:22,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-12-17 14:41:22,781 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:41:22,781 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:41:22,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 14:41:22,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:41:22,982 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:41:22,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:41:22,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1551016812, now seen corresponding path program 1 times [2021-12-17 14:41:22,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:41:22,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256955089] [2021-12-17 14:41:22,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:41:22,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:41:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:41:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:41:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:41:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:41:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-17 14:41:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:41:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:41:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:41:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 14:41:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 14:41:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:41:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 14:41:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:41:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:41:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 14:41:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:41:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:41:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:41:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:41:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 14:41:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,411 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-12-17 14:41:23,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:41:23,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256955089] [2021-12-17 14:41:23,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256955089] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:41:23,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754649228] [2021-12-17 14:41:23,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:41:23,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:41:23,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:41:23,413 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:41:23,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 14:41:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:23,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 2007 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 14:41:23,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:41:23,946 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2021-12-17 14:41:23,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:41:23,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754649228] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:41:23,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:41:23,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [19] total 20 [2021-12-17 14:41:23,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21912182] [2021-12-17 14:41:23,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:41:23,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 14:41:23,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:41:23,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 14:41:23,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-12-17 14:41:23,948 INFO L87 Difference]: Start difference. First operand 1227 states and 1950 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-17 14:41:24,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:41:24,238 INFO L93 Difference]: Finished difference Result 3500 states and 5665 transitions. [2021-12-17 14:41:24,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 14:41:24,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 243 [2021-12-17 14:41:24,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:41:24,246 INFO L225 Difference]: With dead ends: 3500 [2021-12-17 14:41:24,246 INFO L226 Difference]: Without dead ends: 2351 [2021-12-17 14:41:24,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-12-17 14:41:24,250 INFO L933 BasicCegarLoop]: 1109 mSDtfsCounter, 905 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:41:24,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 1951 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:41:24,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2021-12-17 14:41:24,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 2349. [2021-12-17 14:41:24,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2349 states, 1833 states have (on average 1.6012002182214948) internal successors, (2935), 1901 states have internal predecessors, (2935), 398 states have call successors, (398), 107 states have call predecessors, (398), 117 states have return successors, (457), 392 states have call predecessors, (457), 393 states have call successors, (457) [2021-12-17 14:41:24,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 3790 transitions. [2021-12-17 14:41:24,528 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 3790 transitions. Word has length 243 [2021-12-17 14:41:24,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:41:24,529 INFO L470 AbstractCegarLoop]: Abstraction has 2349 states and 3790 transitions. [2021-12-17 14:41:24,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-17 14:41:24,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 3790 transitions. [2021-12-17 14:41:24,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-12-17 14:41:24,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:41:24,533 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:41:24,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 14:41:24,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-17 14:41:24,733 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:41:24,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:41:24,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1534669380, now seen corresponding path program 1 times [2021-12-17 14:41:24,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:41:24,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533280148] [2021-12-17 14:41:24,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:41:24,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:41:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:24,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:41:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:24,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:24,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:41:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:24,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:41:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:24,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:41:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-17 14:41:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:41:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:41:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:41:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 14:41:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 14:41:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:41:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 14:41:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:41:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:41:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 14:41:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:41:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:41:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:41:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:41:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:41:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-12-17 14:41:25,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:41:25,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533280148] [2021-12-17 14:41:25,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533280148] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:41:25,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138795802] [2021-12-17 14:41:25,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:41:25,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:41:25,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:41:25,182 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:41:25,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 14:41:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:41:25,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 1994 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 14:41:25,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:41:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 33 proven. 88 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-12-17 14:41:25,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 14:41:26,275 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-12-17 14:41:26,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138795802] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 14:41:26,275 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 14:41:26,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 5, 5] total 23 [2021-12-17 14:41:26,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262448908] [2021-12-17 14:41:26,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 14:41:26,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-17 14:41:26,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:41:26,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-17 14:41:26,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2021-12-17 14:41:26,276 INFO L87 Difference]: Start difference. First operand 2349 states and 3790 transitions. Second operand has 23 states, 23 states have (on average 10.521739130434783) internal successors, (242), 17 states have internal predecessors, (242), 9 states have call successors, (52), 8 states have call predecessors, (52), 10 states have return successors, (52), 13 states have call predecessors, (52), 9 states have call successors, (52) [2021-12-17 14:41:58,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:41:58,622 INFO L93 Difference]: Finished difference Result 18090 states and 32224 transitions. [2021-12-17 14:41:58,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-12-17 14:41:58,623 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.521739130434783) internal successors, (242), 17 states have internal predecessors, (242), 9 states have call successors, (52), 8 states have call predecessors, (52), 10 states have return successors, (52), 13 states have call predecessors, (52), 9 states have call successors, (52) Word has length 241 [2021-12-17 14:41:58,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:41:58,706 INFO L225 Difference]: With dead ends: 18090 [2021-12-17 14:41:58,707 INFO L226 Difference]: Without dead ends: 15819 [2021-12-17 14:41:58,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 553 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4931 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1864, Invalid=12416, Unknown=0, NotChecked=0, Total=14280 [2021-12-17 14:41:58,741 INFO L933 BasicCegarLoop]: 2795 mSDtfsCounter, 10385 mSDsluCounter, 22320 mSDsCounter, 0 mSdLazyCounter, 39663 mSolverCounterSat, 5992 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10391 SdHoareTripleChecker+Valid, 25115 SdHoareTripleChecker+Invalid, 45655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5992 IncrementalHoareTripleChecker+Valid, 39663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2021-12-17 14:41:58,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10391 Valid, 25115 Invalid, 45655 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5992 Valid, 39663 Invalid, 0 Unknown, 0 Unchecked, 20.5s Time] [2021-12-17 14:41:58,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15819 states. [2021-12-17 14:42:00,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15819 to 8767. [2021-12-17 14:42:00,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8767 states, 6739 states have (on average 1.5638818815848048) internal successors, (10539), 6955 states have internal predecessors, (10539), 1562 states have call successors, (1562), 350 states have call predecessors, (1562), 465 states have return successors, (2116), 1577 states have call predecessors, (2116), 1557 states have call successors, (2116) [2021-12-17 14:42:00,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8767 states to 8767 states and 14217 transitions. [2021-12-17 14:42:00,263 INFO L78 Accepts]: Start accepts. Automaton has 8767 states and 14217 transitions. Word has length 241 [2021-12-17 14:42:00,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:42:00,264 INFO L470 AbstractCegarLoop]: Abstraction has 8767 states and 14217 transitions. [2021-12-17 14:42:00,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.521739130434783) internal successors, (242), 17 states have internal predecessors, (242), 9 states have call successors, (52), 8 states have call predecessors, (52), 10 states have return successors, (52), 13 states have call predecessors, (52), 9 states have call successors, (52) [2021-12-17 14:42:00,264 INFO L276 IsEmpty]: Start isEmpty. Operand 8767 states and 14217 transitions. [2021-12-17 14:42:00,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-17 14:42:00,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:42:00,278 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:42:00,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 14:42:00,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-17 14:42:00,484 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:42:00,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:42:00,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1918361902, now seen corresponding path program 1 times [2021-12-17 14:42:00,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:42:00,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102748710] [2021-12-17 14:42:00,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:42:00,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:42:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:42:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:42:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:42:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:42:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-17 14:42:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:42:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 14:42:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:42:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 14:42:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 14:42:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:42:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 14:42:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:42:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:42:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:42:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:42:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:42:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 14:42:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:42:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:42:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 59 proven. 13 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-17 14:42:00,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:42:00,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102748710] [2021-12-17 14:42:00,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102748710] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:42:00,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223308893] [2021-12-17 14:42:00,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:42:00,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:42:00,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:42:00,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:42:00,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 14:42:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:01,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 1993 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 14:42:01,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:42:01,537 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-12-17 14:42:01,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:42:01,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223308893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:42:01,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:42:01,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 21 [2021-12-17 14:42:01,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398522547] [2021-12-17 14:42:01,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:42:01,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 14:42:01,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:42:01,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 14:42:01,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:42:01,538 INFO L87 Difference]: Start difference. First operand 8767 states and 14217 transitions. Second operand has 8 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-17 14:42:02,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:42:02,290 INFO L93 Difference]: Finished difference Result 12766 states and 20649 transitions. [2021-12-17 14:42:02,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:42:02,291 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 244 [2021-12-17 14:42:02,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:42:02,304 INFO L225 Difference]: With dead ends: 12766 [2021-12-17 14:42:02,304 INFO L226 Difference]: Without dead ends: 4057 [2021-12-17 14:42:02,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 300 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2021-12-17 14:42:02,324 INFO L933 BasicCegarLoop]: 898 mSDtfsCounter, 60 mSDsluCounter, 5337 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 6235 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:42:02,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 6235 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:42:02,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2021-12-17 14:42:02,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 4057. [2021-12-17 14:42:02,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4057 states, 3157 states have (on average 1.5701615457713018) internal successors, (4957), 3255 states have internal predecessors, (4957), 680 states have call successors, (680), 177 states have call predecessors, (680), 219 states have return successors, (858), 672 states have call predecessors, (858), 675 states have call successors, (858) [2021-12-17 14:42:02,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4057 states to 4057 states and 6495 transitions. [2021-12-17 14:42:02,918 INFO L78 Accepts]: Start accepts. Automaton has 4057 states and 6495 transitions. Word has length 244 [2021-12-17 14:42:02,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:42:02,918 INFO L470 AbstractCegarLoop]: Abstraction has 4057 states and 6495 transitions. [2021-12-17 14:42:02,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-17 14:42:02,918 INFO L276 IsEmpty]: Start isEmpty. Operand 4057 states and 6495 transitions. [2021-12-17 14:42:02,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-12-17 14:42:02,923 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:42:02,923 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:42:02,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-17 14:42:03,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-17 14:42:03,140 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:42:03,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:42:03,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2084370174, now seen corresponding path program 1 times [2021-12-17 14:42:03,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:42:03,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263717936] [2021-12-17 14:42:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:42:03,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:42:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:42:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:42:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:42:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:42:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:42:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:42:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:42:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:42:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 14:42:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:42:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:42:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 14:42:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 14:42:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-17 14:42:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:42:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:42:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:42:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:42:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:42:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:42:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 14:42:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:42:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:42:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-17 14:42:03,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:42:03,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263717936] [2021-12-17 14:42:03,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263717936] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:42:03,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83683398] [2021-12-17 14:42:03,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:42:03,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:42:03,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:42:03,592 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:42:03,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-17 14:42:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:42:03,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 2034 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-17 14:42:03,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:42:04,326 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 14 proven. 34 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-12-17 14:42:04,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 14:42:05,408 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 17 proven. 36 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-17 14:42:05,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83683398] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 14:42:05,408 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 14:42:05,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 34 [2021-12-17 14:42:05,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050900237] [2021-12-17 14:42:05,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 14:42:05,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-17 14:42:05,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:42:05,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-17 14:42:05,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 14:42:05,410 INFO L87 Difference]: Start difference. First operand 4057 states and 6495 transitions. Second operand has 34 states, 32 states have (on average 8.78125) internal successors, (281), 26 states have internal predecessors, (281), 14 states have call successors, (59), 9 states have call predecessors, (59), 15 states have return successors, (62), 19 states have call predecessors, (62), 14 states have call successors, (62) [2021-12-17 14:43:11,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:43:11,809 INFO L93 Difference]: Finished difference Result 23827 states and 41406 transitions. [2021-12-17 14:43:11,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2021-12-17 14:43:11,809 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 8.78125) internal successors, (281), 26 states have internal predecessors, (281), 14 states have call successors, (59), 9 states have call predecessors, (59), 15 states have return successors, (62), 19 states have call predecessors, (62), 14 states have call successors, (62) Word has length 255 [2021-12-17 14:43:11,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:43:11,911 INFO L225 Difference]: With dead ends: 23827 [2021-12-17 14:43:11,912 INFO L226 Difference]: Without dead ends: 17946 [2021-12-17 14:43:11,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 636 SyntacticMatches, 2 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20124 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=5613, Invalid=47057, Unknown=0, NotChecked=0, Total=52670 [2021-12-17 14:43:11,982 INFO L933 BasicCegarLoop]: 1716 mSDtfsCounter, 22322 mSDsluCounter, 17681 mSDsCounter, 0 mSdLazyCounter, 51967 mSolverCounterSat, 13877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22322 SdHoareTripleChecker+Valid, 19397 SdHoareTripleChecker+Invalid, 65844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 13877 IncrementalHoareTripleChecker+Valid, 51967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:43:11,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22322 Valid, 19397 Invalid, 65844 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [13877 Valid, 51967 Invalid, 0 Unknown, 0 Unchecked, 33.2s Time] [2021-12-17 14:43:11,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17946 states. [2021-12-17 14:43:14,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17946 to 14038. [2021-12-17 14:43:14,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14038 states, 10767 states have (on average 1.5254945667316802) internal successors, (16425), 11128 states have internal predecessors, (16425), 2453 states have call successors, (2453), 657 states have call predecessors, (2453), 817 states have return successors, (3588), 2444 states have call predecessors, (3588), 2448 states have call successors, (3588) [2021-12-17 14:43:14,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14038 states to 14038 states and 22466 transitions. [2021-12-17 14:43:14,459 INFO L78 Accepts]: Start accepts. Automaton has 14038 states and 22466 transitions. Word has length 255 [2021-12-17 14:43:14,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:43:14,459 INFO L470 AbstractCegarLoop]: Abstraction has 14038 states and 22466 transitions. [2021-12-17 14:43:14,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 8.78125) internal successors, (281), 26 states have internal predecessors, (281), 14 states have call successors, (59), 9 states have call predecessors, (59), 15 states have return successors, (62), 19 states have call predecessors, (62), 14 states have call successors, (62) [2021-12-17 14:43:14,460 INFO L276 IsEmpty]: Start isEmpty. Operand 14038 states and 22466 transitions. [2021-12-17 14:43:14,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-17 14:43:14,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:43:14,465 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:43:14,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-17 14:43:14,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:43:14,669 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:43:14,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:43:14,670 INFO L85 PathProgramCache]: Analyzing trace with hash -405509867, now seen corresponding path program 1 times [2021-12-17 14:43:14,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:43:14,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760302194] [2021-12-17 14:43:14,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:43:14,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:43:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:43:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:14,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:43:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:14,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:43:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:14,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:43:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:14,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:43:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:14,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:43:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:14,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:43:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:14,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:43:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:14,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:43:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:14,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:43:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:14,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:43:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:14,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:43:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:14,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:43:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:14,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 14:43:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:15,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-17 14:43:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:15,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:43:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:15,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:43:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:15,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 14:43:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:15,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 14:43:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:15,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-17 14:43:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:15,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-17 14:43:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:15,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-17 14:43:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:15,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-17 14:43:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:15,023 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-12-17 14:43:15,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:43:15,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760302194] [2021-12-17 14:43:15,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760302194] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:43:15,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:43:15,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:43:15,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158974073] [2021-12-17 14:43:15,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:43:15,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:43:15,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:43:15,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:43:15,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:43:15,025 INFO L87 Difference]: Start difference. First operand 14038 states and 22466 transitions. Second operand has 12 states, 12 states have (on average 10.75) internal successors, (129), 7 states have internal predecessors, (129), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 5 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-17 14:43:33,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:43:33,054 INFO L93 Difference]: Finished difference Result 50372 states and 88349 transitions. [2021-12-17 14:43:33,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-17 14:43:33,055 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.75) internal successors, (129), 7 states have internal predecessors, (129), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 5 states have call predecessors, (22), 3 states have call successors, (22) Word has length 209 [2021-12-17 14:43:33,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:43:33,341 INFO L225 Difference]: With dead ends: 50372 [2021-12-17 14:43:33,341 INFO L226 Difference]: Without dead ends: 36414 [2021-12-17 14:43:33,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=236, Invalid=954, Unknown=0, NotChecked=0, Total=1190 [2021-12-17 14:43:33,448 INFO L933 BasicCegarLoop]: 1100 mSDtfsCounter, 2626 mSDsluCounter, 4881 mSDsCounter, 0 mSdLazyCounter, 8264 mSolverCounterSat, 964 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2709 SdHoareTripleChecker+Valid, 5981 SdHoareTripleChecker+Invalid, 9228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 964 IncrementalHoareTripleChecker+Valid, 8264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:43:33,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2709 Valid, 5981 Invalid, 9228 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [964 Valid, 8264 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2021-12-17 14:43:33,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36414 states. [2021-12-17 14:43:38,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36414 to 28311. [2021-12-17 14:43:38,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28311 states, 21669 states have (on average 1.5245281277400895) internal successors, (33035), 22374 states have internal predecessors, (33035), 4952 states have call successors, (4952), 1231 states have call predecessors, (4952), 1689 states have return successors, (9268), 5089 states have call predecessors, (9268), 4947 states have call successors, (9268) [2021-12-17 14:43:38,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28311 states to 28311 states and 47255 transitions. [2021-12-17 14:43:38,913 INFO L78 Accepts]: Start accepts. Automaton has 28311 states and 47255 transitions. Word has length 209 [2021-12-17 14:43:38,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:43:38,914 INFO L470 AbstractCegarLoop]: Abstraction has 28311 states and 47255 transitions. [2021-12-17 14:43:38,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.75) internal successors, (129), 7 states have internal predecessors, (129), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 5 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-17 14:43:38,914 INFO L276 IsEmpty]: Start isEmpty. Operand 28311 states and 47255 transitions. [2021-12-17 14:43:38,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-12-17 14:43:38,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:43:38,919 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:43:38,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-17 14:43:38,920 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:43:38,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:43:38,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1077325411, now seen corresponding path program 1 times [2021-12-17 14:43:38,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:43:38,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869670674] [2021-12-17 14:43:38,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:43:38,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:43:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:43:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:43:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:43:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:43:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:43:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:43:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:43:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:43:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:43:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:43:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:43:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:43:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:43:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 14:43:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 14:43:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:43:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 14:43:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 14:43:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 14:43:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:43:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-17 14:43:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-17 14:43:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-17 14:43:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:43:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-12-17 14:43:39,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:43:39,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869670674] [2021-12-17 14:43:39,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869670674] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:43:39,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:43:39,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 14:43:39,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899407708] [2021-12-17 14:43:39,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:43:39,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 14:43:39,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:43:39,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 14:43:39,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:43:39,285 INFO L87 Difference]: Start difference. First operand 28311 states and 47255 transitions. Second operand has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 7 states have internal predecessors, (131), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 5 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-17 14:44:03,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:44:03,949 INFO L93 Difference]: Finished difference Result 100147 states and 189498 transitions. [2021-12-17 14:44:03,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-17 14:44:03,949 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 7 states have internal predecessors, (131), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 5 states have call predecessors, (22), 3 states have call successors, (22) Word has length 211 [2021-12-17 14:44:03,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:44:04,703 INFO L225 Difference]: With dead ends: 100147 [2021-12-17 14:44:04,704 INFO L226 Difference]: Without dead ends: 71924 [2021-12-17 14:44:04,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=236, Invalid=954, Unknown=0, NotChecked=0, Total=1190 [2021-12-17 14:44:04,986 INFO L933 BasicCegarLoop]: 1135 mSDtfsCounter, 4220 mSDsluCounter, 5079 mSDsCounter, 0 mSdLazyCounter, 7801 mSolverCounterSat, 1471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4304 SdHoareTripleChecker+Valid, 6214 SdHoareTripleChecker+Invalid, 9272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1471 IncrementalHoareTripleChecker+Valid, 7801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-12-17 14:44:04,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4304 Valid, 6214 Invalid, 9272 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1471 Valid, 7801 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-12-17 14:44:05,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71924 states. [2021-12-17 14:44:15,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71924 to 55827. [2021-12-17 14:44:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55827 states, 42667 states have (on average 1.5250427731033351) internal successors, (65069), 44060 states have internal predecessors, (65069), 9804 states have call successors, (9804), 2405 states have call predecessors, (9804), 3355 states have return successors, (22219), 10129 states have call predecessors, (22219), 9799 states have call successors, (22219) [2021-12-17 14:44:15,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55827 states to 55827 states and 97092 transitions. [2021-12-17 14:44:15,626 INFO L78 Accepts]: Start accepts. Automaton has 55827 states and 97092 transitions. Word has length 211 [2021-12-17 14:44:15,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:44:15,627 INFO L470 AbstractCegarLoop]: Abstraction has 55827 states and 97092 transitions. [2021-12-17 14:44:15,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 7 states have internal predecessors, (131), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 5 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-17 14:44:15,627 INFO L276 IsEmpty]: Start isEmpty. Operand 55827 states and 97092 transitions. [2021-12-17 14:44:15,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-12-17 14:44:15,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:44:15,635 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:44:15,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-17 14:44:15,635 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:44:15,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:44:15,635 INFO L85 PathProgramCache]: Analyzing trace with hash -342872348, now seen corresponding path program 1 times [2021-12-17 14:44:15,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:44:15,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970514489] [2021-12-17 14:44:15,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:44:15,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:44:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 14:44:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:44:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:44:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 14:44:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:44:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-17 14:44:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:44:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:44:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 14:44:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 14:44:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 14:44:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 14:44:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 14:44:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-17 14:44:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 14:44:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-17 14:44:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-17 14:44:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-17 14:44:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:44:15,933 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-12-17 14:44:15,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:44:15,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970514489] [2021-12-17 14:44:15,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970514489] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:44:15,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:44:15,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 14:44:15,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662301315] [2021-12-17 14:44:15,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:44:15,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 14:44:15,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:44:15,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 14:44:15,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-17 14:44:15,934 INFO L87 Difference]: Start difference. First operand 55827 states and 97092 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-17 14:44:52,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:44:52,389 INFO L93 Difference]: Finished difference Result 187557 states and 388152 transitions. [2021-12-17 14:44:52,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 14:44:52,389 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 212 [2021-12-17 14:44:52,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:44:54,559 INFO L225 Difference]: With dead ends: 187557 [2021-12-17 14:44:54,560 INFO L226 Difference]: Without dead ends: 131834 [2021-12-17 14:44:55,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2021-12-17 14:44:55,484 INFO L933 BasicCegarLoop]: 1091 mSDtfsCounter, 3360 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 3830 mSolverCounterSat, 1187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3445 SdHoareTripleChecker+Valid, 3325 SdHoareTripleChecker+Invalid, 5017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1187 IncrementalHoareTripleChecker+Valid, 3830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-17 14:44:55,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3445 Valid, 3325 Invalid, 5017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1187 Valid, 3830 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-17 14:44:55,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131834 states.