./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bff47839034fd9cbb920af5a298a9e1741d5a9c8d5dbee3233345fdc3046fb27 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 05:39:50,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 05:39:50,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 05:39:50,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 05:39:50,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 05:39:50,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 05:39:50,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 05:39:50,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 05:39:50,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 05:39:50,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 05:39:50,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 05:39:50,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 05:39:50,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 05:39:50,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 05:39:50,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 05:39:50,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 05:39:50,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 05:39:50,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 05:39:50,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 05:39:50,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 05:39:50,710 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 05:39:50,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 05:39:50,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 05:39:50,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 05:39:50,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 05:39:50,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 05:39:50,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 05:39:50,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 05:39:50,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 05:39:50,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 05:39:50,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 05:39:50,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 05:39:50,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 05:39:50,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 05:39:50,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 05:39:50,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 05:39:50,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 05:39:50,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 05:39:50,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 05:39:50,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 05:39:50,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 05:39:50,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 05:39:50,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 05:39:50,746 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 05:39:50,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 05:39:50,747 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 05:39:50,747 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 05:39:50,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 05:39:50,748 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 05:39:50,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 05:39:50,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 05:39:50,748 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 05:39:50,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 05:39:50,749 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 05:39:50,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 05:39:50,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 05:39:50,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 05:39:50,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 05:39:50,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 05:39:50,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 05:39:50,750 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 05:39:50,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 05:39:50,751 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 05:39:50,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 05:39:50,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 05:39:50,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 05:39:50,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 05:39:50,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 05:39:50,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 05:39:50,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 05:39:50,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 05:39:50,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 05:39:50,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 05:39:50,752 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 05:39:50,753 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 05:39:50,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 05:39:50,753 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bff47839034fd9cbb920af5a298a9e1741d5a9c8d5dbee3233345fdc3046fb27 [2022-07-12 05:39:50,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 05:39:50,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 05:39:50,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 05:39:50,954 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 05:39:50,956 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 05:39:50,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c [2022-07-12 05:39:51,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe027ee2b/909b1bf45ebc4a35975a2181ce2e6247/FLAG41152e318 [2022-07-12 05:39:51,491 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 05:39:51,491 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c [2022-07-12 05:39:51,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe027ee2b/909b1bf45ebc4a35975a2181ce2e6247/FLAG41152e318 [2022-07-12 05:39:51,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe027ee2b/909b1bf45ebc4a35975a2181ce2e6247 [2022-07-12 05:39:51,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 05:39:51,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 05:39:51,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 05:39:51,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 05:39:51,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 05:39:51,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:39:51" (1/1) ... [2022-07-12 05:39:51,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ff2b842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:39:51, skipping insertion in model container [2022-07-12 05:39:51,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:39:51" (1/1) ... [2022-07-12 05:39:51,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 05:39:51,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 05:39:51,852 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c[63597,63610] [2022-07-12 05:39:51,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 05:39:51,902 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 05:39:51,964 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c[63597,63610] [2022-07-12 05:39:51,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 05:39:51,989 INFO L208 MainTranslator]: Completed translation [2022-07-12 05:39:51,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:39:51 WrapperNode [2022-07-12 05:39:51,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 05:39:51,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 05:39:51,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 05:39:51,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 05:39:51,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:39:51" (1/1) ... [2022-07-12 05:39:52,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:39:51" (1/1) ... [2022-07-12 05:39:52,064 INFO L137 Inliner]: procedures = 97, calls = 349, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 1167 [2022-07-12 05:39:52,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 05:39:52,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 05:39:52,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 05:39:52,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 05:39:52,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:39:51" (1/1) ... [2022-07-12 05:39:52,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:39:51" (1/1) ... [2022-07-12 05:39:52,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:39:51" (1/1) ... [2022-07-12 05:39:52,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:39:51" (1/1) ... [2022-07-12 05:39:52,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:39:51" (1/1) ... [2022-07-12 05:39:52,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:39:51" (1/1) ... [2022-07-12 05:39:52,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:39:51" (1/1) ... [2022-07-12 05:39:52,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 05:39:52,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 05:39:52,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 05:39:52,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 05:39:52,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:39:51" (1/1) ... [2022-07-12 05:39:52,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 05:39:52,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:52,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 05:39:52,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 05:39:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-12 05:39:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-12 05:39:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-12 05:39:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-12 05:39:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-12 05:39:52,240 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-12 05:39:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-12 05:39:52,241 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-12 05:39:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-12 05:39:52,242 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-12 05:39:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-12 05:39:52,242 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-12 05:39:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-12 05:39:52,242 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-12 05:39:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-12 05:39:52,243 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-12 05:39:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-12 05:39:52,243 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-12 05:39:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-07-12 05:39:52,243 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-07-12 05:39:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 05:39:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-12 05:39:52,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-12 05:39:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-12 05:39:52,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-12 05:39:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-12 05:39:52,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-12 05:39:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-12 05:39:52,244 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-12 05:39:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-12 05:39:52,245 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-12 05:39:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-12 05:39:52,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-12 05:39:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-12 05:39:52,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-12 05:39:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-12 05:39:52,246 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-12 05:39:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-07-12 05:39:52,246 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-07-12 05:39:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-12 05:39:52,246 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-12 05:39:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-12 05:39:52,247 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-12 05:39:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-12 05:39:52,247 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-12 05:39:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-12 05:39:52,247 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-12 05:39:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 05:39:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-12 05:39:52,248 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-12 05:39:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 05:39:52,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 05:39:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-12 05:39:52,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-12 05:39:52,250 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-07-12 05:39:52,250 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-07-12 05:39:52,401 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 05:39:52,408 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 05:39:53,128 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 05:39:53,136 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 05:39:53,136 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 05:39:53,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:39:53 BoogieIcfgContainer [2022-07-12 05:39:53,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 05:39:53,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 05:39:53,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 05:39:53,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 05:39:53,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 05:39:51" (1/3) ... [2022-07-12 05:39:53,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5822f2a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:39:53, skipping insertion in model container [2022-07-12 05:39:53,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:39:51" (2/3) ... [2022-07-12 05:39:53,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5822f2a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:39:53, skipping insertion in model container [2022-07-12 05:39:53,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:39:53" (3/3) ... [2022-07-12 05:39:53,144 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product28.cil.c [2022-07-12 05:39:53,153 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 05:39:53,154 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 05:39:53,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 05:39:53,198 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@28fbde59, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2d276a36 [2022-07-12 05:39:53,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 05:39:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 585 states, 455 states have (on average 1.6835164835164835) internal successors, (766), 478 states have internal predecessors, (766), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) [2022-07-12 05:39:53,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-12 05:39:53,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:53,216 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:53,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:53,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:53,223 INFO L85 PathProgramCache]: Analyzing trace with hash -512349069, now seen corresponding path program 1 times [2022-07-12 05:39:53,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:53,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313043164] [2022-07-12 05:39:53,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:53,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:53,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:53,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:53,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:39:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:53,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 05:39:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:53,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:53,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:39:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:53,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 05:39:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:53,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:53,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:53,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:39:53,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:53,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313043164] [2022-07-12 05:39:53,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313043164] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:53,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058217314] [2022-07-12 05:39:53,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:53,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:53,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:53,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:53,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 05:39:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:54,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 05:39:54,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:54,250 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 05:39:54,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:54,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058217314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:54,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:54,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2022-07-12 05:39:54,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930844534] [2022-07-12 05:39:54,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:54,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 05:39:54,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:54,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 05:39:54,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:39:54,283 INFO L87 Difference]: Start difference. First operand has 585 states, 455 states have (on average 1.6835164835164835) internal successors, (766), 478 states have internal predecessors, (766), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-12 05:39:54,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:54,368 INFO L93 Difference]: Finished difference Result 606 states and 1000 transitions. [2022-07-12 05:39:54,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 05:39:54,370 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 83 [2022-07-12 05:39:54,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:54,385 INFO L225 Difference]: With dead ends: 606 [2022-07-12 05:39:54,390 INFO L226 Difference]: Without dead ends: 577 [2022-07-12 05:39:54,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:39:54,396 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:54,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:39:54,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-07-12 05:39:54,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2022-07-12 05:39:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 449 states have (on average 1.6815144766146994) internal successors, (755), 470 states have internal predecessors, (755), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:39:54,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 954 transitions. [2022-07-12 05:39:54,479 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 954 transitions. Word has length 83 [2022-07-12 05:39:54,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:54,480 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 954 transitions. [2022-07-12 05:39:54,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-12 05:39:54,481 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 954 transitions. [2022-07-12 05:39:54,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-12 05:39:54,489 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:54,489 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:54,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 05:39:54,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-12 05:39:54,696 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:54,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:54,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1351265145, now seen corresponding path program 1 times [2022-07-12 05:39:54,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:54,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889189474] [2022-07-12 05:39:54,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:54,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:54,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:54,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:54,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:39:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:54,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 05:39:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:54,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:54,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:39:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 05:39:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:39:55,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:55,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889189474] [2022-07-12 05:39:55,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889189474] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:55,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442985945] [2022-07-12 05:39:55,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:55,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:55,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:55,069 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:55,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 05:39:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:39:55,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:55,412 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:39:55,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:55,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442985945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:55,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:55,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:39:55,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126085245] [2022-07-12 05:39:55,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:55,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:39:55,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:55,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:39:55,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:39:55,414 INFO L87 Difference]: Start difference. First operand 577 states and 954 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:39:55,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:55,493 INFO L93 Difference]: Finished difference Result 1145 states and 1900 transitions. [2022-07-12 05:39:55,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 05:39:55,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2022-07-12 05:39:55,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:55,499 INFO L225 Difference]: With dead ends: 1145 [2022-07-12 05:39:55,499 INFO L226 Difference]: Without dead ends: 577 [2022-07-12 05:39:55,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:39:55,505 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 14 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:55,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2813 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:39:55,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-07-12 05:39:55,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2022-07-12 05:39:55,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 449 states have (on average 1.6792873051224944) internal successors, (754), 470 states have internal predecessors, (754), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:39:55,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 953 transitions. [2022-07-12 05:39:55,530 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 953 transitions. Word has length 85 [2022-07-12 05:39:55,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:55,532 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 953 transitions. [2022-07-12 05:39:55,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:39:55,532 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 953 transitions. [2022-07-12 05:39:55,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-12 05:39:55,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:55,533 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:55,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 05:39:55,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-12 05:39:55,752 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:55,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:55,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1160595213, now seen corresponding path program 1 times [2022-07-12 05:39:55,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:55,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840611709] [2022-07-12 05:39:55,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:55,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 05:39:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:55,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:56,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 05:39:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:56,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:56,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:56,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:56,114 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:39:56,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:56,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840611709] [2022-07-12 05:39:56,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840611709] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:56,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264105054] [2022-07-12 05:39:56,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:56,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:56,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:56,119 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:56,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 05:39:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:56,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:39:56,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:39:56,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:56,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264105054] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:56,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:56,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:39:56,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753507784] [2022-07-12 05:39:56,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:56,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:39:56,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:56,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:39:56,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:39:56,410 INFO L87 Difference]: Start difference. First operand 577 states and 953 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:39:56,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:56,474 INFO L93 Difference]: Finished difference Result 1145 states and 1898 transitions. [2022-07-12 05:39:56,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 05:39:56,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2022-07-12 05:39:56,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:56,478 INFO L225 Difference]: With dead ends: 1145 [2022-07-12 05:39:56,478 INFO L226 Difference]: Without dead ends: 577 [2022-07-12 05:39:56,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:39:56,480 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 12 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:56,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2813 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:39:56,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-07-12 05:39:56,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2022-07-12 05:39:56,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 449 states have (on average 1.6770601336302895) internal successors, (753), 470 states have internal predecessors, (753), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:39:56,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 952 transitions. [2022-07-12 05:39:56,493 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 952 transitions. Word has length 87 [2022-07-12 05:39:56,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:56,493 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 952 transitions. [2022-07-12 05:39:56,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:39:56,494 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 952 transitions. [2022-07-12 05:39:56,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-12 05:39:56,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:56,495 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:56,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 05:39:56,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:56,708 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:56,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:56,708 INFO L85 PathProgramCache]: Analyzing trace with hash 301700615, now seen corresponding path program 1 times [2022-07-12 05:39:56,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:56,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650432628] [2022-07-12 05:39:56,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:56,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:56,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:56,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:56,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:56,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 05:39:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:56,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:56,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:56,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 05:39:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:57,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:57,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:57,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:39:57,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:57,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650432628] [2022-07-12 05:39:57,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650432628] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:57,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303176644] [2022-07-12 05:39:57,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:57,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:57,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:57,032 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:57,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 05:39:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:57,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:39:57,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:57,311 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:39:57,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:57,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303176644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:57,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:57,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:39:57,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545389027] [2022-07-12 05:39:57,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:57,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:39:57,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:57,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:39:57,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:39:57,314 INFO L87 Difference]: Start difference. First operand 577 states and 952 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:39:57,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:57,361 INFO L93 Difference]: Finished difference Result 1152 states and 1905 transitions. [2022-07-12 05:39:57,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:39:57,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2022-07-12 05:39:57,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:57,364 INFO L225 Difference]: With dead ends: 1152 [2022-07-12 05:39:57,364 INFO L226 Difference]: Without dead ends: 586 [2022-07-12 05:39:57,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:39:57,369 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 20 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:57,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2813 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:39:57,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-07-12 05:39:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2022-07-12 05:39:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 457 states have (on average 1.6739606126914661) internal successors, (765), 478 states have internal predecessors, (765), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:39:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 964 transitions. [2022-07-12 05:39:57,413 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 964 transitions. Word has length 89 [2022-07-12 05:39:57,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:57,414 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 964 transitions. [2022-07-12 05:39:57,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:39:57,414 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 964 transitions. [2022-07-12 05:39:57,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 05:39:57,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:57,415 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:57,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 05:39:57,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:57,636 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:57,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:57,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1609654872, now seen corresponding path program 1 times [2022-07-12 05:39:57,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:57,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360891978] [2022-07-12 05:39:57,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:57,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:57,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:57,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:57,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 05:39:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:57,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:39:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:57,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:57,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:57,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 05:39:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:57,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:57,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:57,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:57,902 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:39:57,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:57,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360891978] [2022-07-12 05:39:57,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360891978] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:57,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596722487] [2022-07-12 05:39:57,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:57,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:57,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:57,904 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:57,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 05:39:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:58,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:39:58,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:39:58,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:58,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596722487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:58,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:58,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:39:58,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845933379] [2022-07-12 05:39:58,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:58,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:39:58,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:58,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:39:58,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:39:58,191 INFO L87 Difference]: Start difference. First operand 586 states and 964 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:39:58,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:58,240 INFO L93 Difference]: Finished difference Result 1154 states and 1906 transitions. [2022-07-12 05:39:58,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:39:58,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2022-07-12 05:39:58,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:58,243 INFO L225 Difference]: With dead ends: 1154 [2022-07-12 05:39:58,243 INFO L226 Difference]: Without dead ends: 586 [2022-07-12 05:39:58,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:39:58,246 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 18 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:58,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2813 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:39:58,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-07-12 05:39:58,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2022-07-12 05:39:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 457 states have (on average 1.6717724288840263) internal successors, (764), 478 states have internal predecessors, (764), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:39:58,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 963 transitions. [2022-07-12 05:39:58,267 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 963 transitions. Word has length 90 [2022-07-12 05:39:58,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:58,267 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 963 transitions. [2022-07-12 05:39:58,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:39:58,267 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 963 transitions. [2022-07-12 05:39:58,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 05:39:58,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:58,272 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:58,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 05:39:58,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:58,483 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:58,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:58,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1558891221, now seen corresponding path program 1 times [2022-07-12 05:39:58,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:58,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403986155] [2022-07-12 05:39:58,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:58,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:58,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:58,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:58,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 05:39:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:58,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 05:39:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:58,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:58,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:58,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 05:39:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:58,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:58,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:58,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:58,746 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:39:58,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:58,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403986155] [2022-07-12 05:39:58,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403986155] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:58,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191789487] [2022-07-12 05:39:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:58,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:58,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:58,749 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:58,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 05:39:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:59,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:39:59,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 05:39:59,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:59,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191789487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:59,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:59,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:39:59,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242071942] [2022-07-12 05:39:59,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:59,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:39:59,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:59,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:39:59,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:39:59,028 INFO L87 Difference]: Start difference. First operand 586 states and 963 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:39:59,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:59,075 INFO L93 Difference]: Finished difference Result 1154 states and 1905 transitions. [2022-07-12 05:39:59,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:39:59,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2022-07-12 05:39:59,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:59,078 INFO L225 Difference]: With dead ends: 1154 [2022-07-12 05:39:59,078 INFO L226 Difference]: Without dead ends: 586 [2022-07-12 05:39:59,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:39:59,080 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 17 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:59,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2813 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:39:59,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-07-12 05:39:59,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2022-07-12 05:39:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 457 states have (on average 1.6695842450765865) internal successors, (763), 478 states have internal predecessors, (763), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:39:59,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 962 transitions. [2022-07-12 05:39:59,092 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 962 transitions. Word has length 91 [2022-07-12 05:39:59,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:59,092 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 962 transitions. [2022-07-12 05:39:59,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:39:59,092 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 962 transitions. [2022-07-12 05:39:59,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 05:39:59,093 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:59,093 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:39:59,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 05:39:59,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:59,307 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:39:59,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:39:59,308 INFO L85 PathProgramCache]: Analyzing trace with hash -811976436, now seen corresponding path program 1 times [2022-07-12 05:39:59,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:39:59,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829070907] [2022-07-12 05:39:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:59,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:39:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:59,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:39:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:59,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:59,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:39:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:59,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 05:39:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:59,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:59,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:59,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 05:39:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:59,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:59,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:39:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:59,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:39:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:59,579 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 05:39:59,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:39:59,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829070907] [2022-07-12 05:39:59,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829070907] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:39:59,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715247920] [2022-07-12 05:39:59,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:39:59,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:39:59,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:39:59,581 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:39:59,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 05:39:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:39:59,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:39:59,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:39:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:39:59,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:39:59,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715247920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:39:59,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:39:59,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:39:59,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784111442] [2022-07-12 05:39:59,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:39:59,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:39:59,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:39:59,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:39:59,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:39:59,869 INFO L87 Difference]: Start difference. First operand 586 states and 962 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:39:59,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:39:59,971 INFO L93 Difference]: Finished difference Result 1165 states and 1926 transitions. [2022-07-12 05:39:59,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 05:39:59,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2022-07-12 05:39:59,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:39:59,976 INFO L225 Difference]: With dead ends: 1165 [2022-07-12 05:39:59,977 INFO L226 Difference]: Without dead ends: 586 [2022-07-12 05:39:59,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:39:59,979 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 135 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:39:59,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2630 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:39:59,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-07-12 05:39:59,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2022-07-12 05:39:59,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 457 states have (on average 1.6586433260393874) internal successors, (758), 478 states have internal predecessors, (758), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:39:59,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 957 transitions. [2022-07-12 05:39:59,992 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 957 transitions. Word has length 92 [2022-07-12 05:39:59,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:39:59,992 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 957 transitions. [2022-07-12 05:39:59,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:39:59,992 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 957 transitions. [2022-07-12 05:39:59,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-12 05:39:59,993 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:39:59,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:00,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:00,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:00,211 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:00,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:00,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1634858132, now seen corresponding path program 1 times [2022-07-12 05:40:00,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:00,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094280004] [2022-07-12 05:40:00,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:00,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:00,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:00,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:00,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:00,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:40:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:00,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:00,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:00,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 05:40:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:00,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:00,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:00,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:00,616 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 05:40:00,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:00,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094280004] [2022-07-12 05:40:00,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094280004] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:00,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804724429] [2022-07-12 05:40:00,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:00,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:00,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:00,640 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:00,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 05:40:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:00,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:40:00,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:00,953 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:40:00,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:00,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804724429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:00,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:00,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:40:00,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631713980] [2022-07-12 05:40:00,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:00,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:40:00,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:00,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:40:00,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:40:00,957 INFO L87 Difference]: Start difference. First operand 586 states and 957 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:40:01,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:01,046 INFO L93 Difference]: Finished difference Result 1165 states and 1916 transitions. [2022-07-12 05:40:01,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 05:40:01,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2022-07-12 05:40:01,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:01,049 INFO L225 Difference]: With dead ends: 1165 [2022-07-12 05:40:01,049 INFO L226 Difference]: Without dead ends: 586 [2022-07-12 05:40:01,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:40:01,052 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 129 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:01,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2630 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:40:01,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-07-12 05:40:01,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2022-07-12 05:40:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 457 states have (on average 1.6477024070021882) internal successors, (753), 478 states have internal predecessors, (753), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:40:01,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 952 transitions. [2022-07-12 05:40:01,062 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 952 transitions. Word has length 94 [2022-07-12 05:40:01,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:01,062 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 952 transitions. [2022-07-12 05:40:01,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:40:01,063 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 952 transitions. [2022-07-12 05:40:01,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-12 05:40:01,063 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:01,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:01,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:01,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-12 05:40:01,282 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:01,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:01,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1183890708, now seen corresponding path program 1 times [2022-07-12 05:40:01,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:01,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076109963] [2022-07-12 05:40:01,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:01,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:01,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:01,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:01,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:01,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 05:40:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:01,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:01,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:01,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:40:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:01,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:01,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:01,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 05:40:01,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:01,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076109963] [2022-07-12 05:40:01,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076109963] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:01,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477386614] [2022-07-12 05:40:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:01,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:01,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:01,580 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:01,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 05:40:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:01,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:40:01,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:01,861 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:40:01,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:01,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477386614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:01,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:01,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:40:01,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468586839] [2022-07-12 05:40:01,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:01,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:40:01,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:01,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:40:01,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:40:01,863 INFO L87 Difference]: Start difference. First operand 586 states and 952 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:40:01,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:01,998 INFO L93 Difference]: Finished difference Result 1201 states and 1965 transitions. [2022-07-12 05:40:01,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:40:01,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2022-07-12 05:40:02,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:02,006 INFO L225 Difference]: With dead ends: 1201 [2022-07-12 05:40:02,006 INFO L226 Difference]: Without dead ends: 637 [2022-07-12 05:40:02,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:40:02,009 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 179 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:02,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2640 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:40:02,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-07-12 05:40:02,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2022-07-12 05:40:02,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 507 states have (on average 1.6528599605522682) internal successors, (838), 528 states have internal predecessors, (838), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:40:02,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1037 transitions. [2022-07-12 05:40:02,023 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1037 transitions. Word has length 96 [2022-07-12 05:40:02,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:02,023 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 1037 transitions. [2022-07-12 05:40:02,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:40:02,023 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1037 transitions. [2022-07-12 05:40:02,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-12 05:40:02,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:02,025 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:02,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:02,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:02,239 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:02,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:02,240 INFO L85 PathProgramCache]: Analyzing trace with hash -230053963, now seen corresponding path program 1 times [2022-07-12 05:40:02,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:02,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901137828] [2022-07-12 05:40:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:02,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:02,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:02,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:02,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:02,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:40:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:02,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:02,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:02,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 05:40:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:02,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:02,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:02,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:02,562 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 05:40:02,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:02,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901137828] [2022-07-12 05:40:02,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901137828] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:02,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457098121] [2022-07-12 05:40:02,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:02,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:02,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:02,564 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:02,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 05:40:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:02,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 1742 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:40:02,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:40:02,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:02,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457098121] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:02,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:02,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:40:02,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726206787] [2022-07-12 05:40:02,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:02,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:40:02,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:02,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:40:02,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:40:02,861 INFO L87 Difference]: Start difference. First operand 637 states and 1037 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:40:02,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:02,989 INFO L93 Difference]: Finished difference Result 1216 states and 1989 transitions. [2022-07-12 05:40:02,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:40:02,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2022-07-12 05:40:02,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:02,992 INFO L225 Difference]: With dead ends: 1216 [2022-07-12 05:40:02,993 INFO L226 Difference]: Without dead ends: 637 [2022-07-12 05:40:02,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:40:02,995 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 173 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:02,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2640 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:40:02,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-07-12 05:40:03,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2022-07-12 05:40:03,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 507 states have (on average 1.6429980276134122) internal successors, (833), 528 states have internal predecessors, (833), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-12 05:40:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1032 transitions. [2022-07-12 05:40:03,011 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1032 transitions. Word has length 97 [2022-07-12 05:40:03,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:03,011 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 1032 transitions. [2022-07-12 05:40:03,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:40:03,012 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1032 transitions. [2022-07-12 05:40:03,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-12 05:40:03,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:03,013 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:03,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:03,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 05:40:03,227 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:03,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:03,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1704271756, now seen corresponding path program 1 times [2022-07-12 05:40:03,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:03,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911716194] [2022-07-12 05:40:03,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:03,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:03,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:03,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:03,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:03,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:40:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:03,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:03,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:03,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 05:40:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:03,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:03,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:03,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:03,491 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 05:40:03,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:03,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911716194] [2022-07-12 05:40:03,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911716194] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:03,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279439652] [2022-07-12 05:40:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:03,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:03,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:03,493 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:03,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 05:40:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:03,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 05:40:03,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:40:03,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:03,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279439652] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:03,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:03,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-07-12 05:40:03,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617111555] [2022-07-12 05:40:03,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:03,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:40:03,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:03,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:40:03,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:40:03,816 INFO L87 Difference]: Start difference. First operand 637 states and 1032 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:40:03,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:03,954 INFO L93 Difference]: Finished difference Result 1239 states and 2019 transitions. [2022-07-12 05:40:03,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:40:03,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2022-07-12 05:40:03,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:03,958 INFO L225 Difference]: With dead ends: 1239 [2022-07-12 05:40:03,958 INFO L226 Difference]: Without dead ends: 675 [2022-07-12 05:40:03,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:40:03,961 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 177 mSDsluCounter, 5419 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6340 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:03,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6340 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:40:03,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-07-12 05:40:03,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 656. [2022-07-12 05:40:03,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 523 states have (on average 1.6424474187380498) internal successors, (859), 546 states have internal predecessors, (859), 103 states have call successors, (103), 28 states have call predecessors, (103), 29 states have return successors, (100), 95 states have call predecessors, (100), 98 states have call successors, (100) [2022-07-12 05:40:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1062 transitions. [2022-07-12 05:40:03,977 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1062 transitions. Word has length 97 [2022-07-12 05:40:03,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:03,977 INFO L495 AbstractCegarLoop]: Abstraction has 656 states and 1062 transitions. [2022-07-12 05:40:03,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:40:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1062 transitions. [2022-07-12 05:40:03,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-12 05:40:03,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:03,979 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:03,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:04,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-12 05:40:04,191 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:04,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:04,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2019444307, now seen corresponding path program 1 times [2022-07-12 05:40:04,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:04,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362675249] [2022-07-12 05:40:04,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:04,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:04,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:04,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:04,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:04,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:40:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:04,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:04,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:04,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 05:40:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:04,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:04,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:04,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 05:40:04,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:04,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362675249] [2022-07-12 05:40:04,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362675249] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:04,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535873869] [2022-07-12 05:40:04,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:04,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:04,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:04,482 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:04,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 05:40:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:04,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 05:40:04,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:04,779 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 05:40:04,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:04,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535873869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:04,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:04,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-07-12 05:40:04,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477936062] [2022-07-12 05:40:04,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:04,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:40:04,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:04,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:40:04,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:40:04,781 INFO L87 Difference]: Start difference. First operand 656 states and 1062 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:40:04,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:04,846 INFO L93 Difference]: Finished difference Result 1177 states and 1919 transitions. [2022-07-12 05:40:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:40:04,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2022-07-12 05:40:04,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:04,849 INFO L225 Difference]: With dead ends: 1177 [2022-07-12 05:40:04,849 INFO L226 Difference]: Without dead ends: 680 [2022-07-12 05:40:04,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:40:04,851 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 134 mSDsluCounter, 4559 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5492 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:04,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5492 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:40:04,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-07-12 05:40:04,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 675. [2022-07-12 05:40:04,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 539 states have (on average 1.6419294990723563) internal successors, (885), 564 states have internal predecessors, (885), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2022-07-12 05:40:04,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1092 transitions. [2022-07-12 05:40:04,864 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1092 transitions. Word has length 97 [2022-07-12 05:40:04,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:04,865 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1092 transitions. [2022-07-12 05:40:04,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:40:04,865 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1092 transitions. [2022-07-12 05:40:04,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 05:40:04,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:04,866 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:04,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:05,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-12 05:40:05,079 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:05,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:05,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1024682681, now seen corresponding path program 1 times [2022-07-12 05:40:05,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:05,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455815217] [2022-07-12 05:40:05,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:05,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:05,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:05,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:05,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:05,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:40:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:05,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:05,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:05,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 05:40:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:05,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:05,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:05,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:05,338 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 05:40:05,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:05,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455815217] [2022-07-12 05:40:05,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455815217] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:05,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073214071] [2022-07-12 05:40:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:05,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:05,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:05,340 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:05,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 05:40:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:05,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 05:40:05,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:05,632 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 05:40:05,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:05,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073214071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:05,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:05,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-07-12 05:40:05,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128755824] [2022-07-12 05:40:05,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:05,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:40:05,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:05,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:40:05,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:40:05,634 INFO L87 Difference]: Start difference. First operand 675 states and 1092 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:40:05,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:05,704 INFO L93 Difference]: Finished difference Result 1207 states and 1970 transitions. [2022-07-12 05:40:05,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:40:05,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-07-12 05:40:05,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:05,708 INFO L225 Difference]: With dead ends: 1207 [2022-07-12 05:40:05,708 INFO L226 Difference]: Without dead ends: 710 [2022-07-12 05:40:05,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:40:05,710 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 143 mSDsluCounter, 4549 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5482 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:05,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5482 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:40:05,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-07-12 05:40:05,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 675. [2022-07-12 05:40:05,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 539 states have (on average 1.6419294990723563) internal successors, (885), 564 states have internal predecessors, (885), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2022-07-12 05:40:05,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1092 transitions. [2022-07-12 05:40:05,726 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1092 transitions. Word has length 98 [2022-07-12 05:40:05,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:05,726 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1092 transitions. [2022-07-12 05:40:05,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:40:05,727 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1092 transitions. [2022-07-12 05:40:05,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 05:40:05,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:05,728 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:05,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:05,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-12 05:40:05,946 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:05,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:05,946 INFO L85 PathProgramCache]: Analyzing trace with hash 846899001, now seen corresponding path program 1 times [2022-07-12 05:40:05,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:05,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693383588] [2022-07-12 05:40:05,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:05,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:06,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:06,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:06,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:06,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:40:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:06,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:06,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:06,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 05:40:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:06,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:06,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:06,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 05:40:06,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:06,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693383588] [2022-07-12 05:40:06,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693383588] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:06,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102406457] [2022-07-12 05:40:06,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:06,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:06,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:06,248 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:06,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 05:40:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:06,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 05:40:06,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:06,542 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 05:40:06,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:06,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102406457] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:06,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:06,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-07-12 05:40:06,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507765863] [2022-07-12 05:40:06,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:06,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:40:06,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:06,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:40:06,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:40:06,545 INFO L87 Difference]: Start difference. First operand 675 states and 1092 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:40:06,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:06,659 INFO L93 Difference]: Finished difference Result 1192 states and 1944 transitions. [2022-07-12 05:40:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:40:06,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-07-12 05:40:06,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:06,663 INFO L225 Difference]: With dead ends: 1192 [2022-07-12 05:40:06,663 INFO L226 Difference]: Without dead ends: 695 [2022-07-12 05:40:06,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:40:06,665 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 177 mSDsluCounter, 5425 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6348 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:06,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6348 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:40:06,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-07-12 05:40:06,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 675. [2022-07-12 05:40:06,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 539 states have (on average 1.6419294990723563) internal successors, (885), 564 states have internal predecessors, (885), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2022-07-12 05:40:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1092 transitions. [2022-07-12 05:40:06,679 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1092 transitions. Word has length 98 [2022-07-12 05:40:06,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:06,679 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1092 transitions. [2022-07-12 05:40:06,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:40:06,680 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1092 transitions. [2022-07-12 05:40:06,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 05:40:06,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:06,681 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:06,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:06,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:06,899 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:06,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:06,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1531565404, now seen corresponding path program 1 times [2022-07-12 05:40:06,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:06,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194842550] [2022-07-12 05:40:06,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:06,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:06,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:40:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 05:40:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 05:40:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,185 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 05:40:07,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:07,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194842550] [2022-07-12 05:40:07,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194842550] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:07,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750425496] [2022-07-12 05:40:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:07,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:07,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:07,187 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:07,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 05:40:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:40:07,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 05:40:07,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:07,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750425496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:07,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:07,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:40:07,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422427406] [2022-07-12 05:40:07,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:07,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:40:07,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:07,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:40:07,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:40:07,447 INFO L87 Difference]: Start difference. First operand 675 states and 1092 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:40:07,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:07,492 INFO L93 Difference]: Finished difference Result 1244 states and 2029 transitions. [2022-07-12 05:40:07,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:40:07,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 98 [2022-07-12 05:40:07,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:07,496 INFO L225 Difference]: With dead ends: 1244 [2022-07-12 05:40:07,496 INFO L226 Difference]: Without dead ends: 675 [2022-07-12 05:40:07,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:40:07,498 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 23 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:07,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2782 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:40:07,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-07-12 05:40:07,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2022-07-12 05:40:07,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 539 states have (on average 1.634508348794063) internal successors, (881), 564 states have internal predecessors, (881), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2022-07-12 05:40:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1088 transitions. [2022-07-12 05:40:07,511 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1088 transitions. Word has length 98 [2022-07-12 05:40:07,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:07,511 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1088 transitions. [2022-07-12 05:40:07,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:40:07,512 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1088 transitions. [2022-07-12 05:40:07,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 05:40:07,513 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:07,513 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:07,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:07,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 05:40:07,727 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:07,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:07,728 INFO L85 PathProgramCache]: Analyzing trace with hash -907050453, now seen corresponding path program 1 times [2022-07-12 05:40:07,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:07,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860503012] [2022-07-12 05:40:07,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:07,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:40:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 05:40:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:07,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:08,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:08,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 05:40:08,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:08,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860503012] [2022-07-12 05:40:08,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860503012] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:08,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461935146] [2022-07-12 05:40:08,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:08,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:08,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:08,004 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:08,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 05:40:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:08,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 05:40:08,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:08,288 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 05:40:08,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:08,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461935146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:08,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:08,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-07-12 05:40:08,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650287198] [2022-07-12 05:40:08,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:08,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:40:08,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:08,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:40:08,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:40:08,289 INFO L87 Difference]: Start difference. First operand 675 states and 1088 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:40:08,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:08,410 INFO L93 Difference]: Finished difference Result 1192 states and 1941 transitions. [2022-07-12 05:40:08,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:40:08,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-07-12 05:40:08,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:08,414 INFO L225 Difference]: With dead ends: 1192 [2022-07-12 05:40:08,414 INFO L226 Difference]: Without dead ends: 695 [2022-07-12 05:40:08,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:40:08,416 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 185 mSDsluCounter, 5388 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 6305 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:08,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 6305 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 05:40:08,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-07-12 05:40:08,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 675. [2022-07-12 05:40:08,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 539 states have (on average 1.634508348794063) internal successors, (881), 564 states have internal predecessors, (881), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2022-07-12 05:40:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1088 transitions. [2022-07-12 05:40:08,434 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1088 transitions. Word has length 99 [2022-07-12 05:40:08,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:08,434 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1088 transitions. [2022-07-12 05:40:08,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:40:08,435 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1088 transitions. [2022-07-12 05:40:08,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 05:40:08,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:08,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:08,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:08,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-12 05:40:08,654 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:08,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:08,655 INFO L85 PathProgramCache]: Analyzing trace with hash -533275522, now seen corresponding path program 1 times [2022-07-12 05:40:08,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:08,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384624154] [2022-07-12 05:40:08,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:08,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:08,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:08,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:08,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:08,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:40:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:08,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:08,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:08,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:40:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:08,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:08,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:08,911 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 05:40:08,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:08,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384624154] [2022-07-12 05:40:08,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384624154] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:08,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585088223] [2022-07-12 05:40:08,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:08,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:08,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:08,913 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:08,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 05:40:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:09,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 05:40:09,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 05:40:09,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:09,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585088223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:09,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:09,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-12 05:40:09,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13512052] [2022-07-12 05:40:09,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:09,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:40:09,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:09,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:40:09,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:40:09,163 INFO L87 Difference]: Start difference. First operand 675 states and 1088 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:40:09,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:09,211 INFO L93 Difference]: Finished difference Result 1300 states and 2111 transitions. [2022-07-12 05:40:09,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 05:40:09,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 100 [2022-07-12 05:40:09,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:09,214 INFO L225 Difference]: With dead ends: 1300 [2022-07-12 05:40:09,214 INFO L226 Difference]: Without dead ends: 711 [2022-07-12 05:40:09,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:40:09,217 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 38 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:09,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2758 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:40:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-07-12 05:40:09,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 699. [2022-07-12 05:40:09,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 563 states have (on average 1.6145648312611012) internal successors, (909), 588 states have internal predecessors, (909), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2022-07-12 05:40:09,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1116 transitions. [2022-07-12 05:40:09,234 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1116 transitions. Word has length 100 [2022-07-12 05:40:09,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:09,234 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 1116 transitions. [2022-07-12 05:40:09,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:40:09,235 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1116 transitions. [2022-07-12 05:40:09,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 05:40:09,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:09,236 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:09,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:09,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-12 05:40:09,455 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:09,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:09,455 INFO L85 PathProgramCache]: Analyzing trace with hash 160673055, now seen corresponding path program 1 times [2022-07-12 05:40:09,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:09,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130882911] [2022-07-12 05:40:09,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:09,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:09,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:09,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:09,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:09,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:40:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:09,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:09,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:09,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:40:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:09,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:09,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:09,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:09,708 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 05:40:09,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:09,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130882911] [2022-07-12 05:40:09,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130882911] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:09,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414373213] [2022-07-12 05:40:09,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:09,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:09,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:09,710 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:09,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-12 05:40:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:09,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 05:40:09,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 05:40:10,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:10,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414373213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:10,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:10,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-07-12 05:40:10,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462296] [2022-07-12 05:40:10,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:10,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:40:10,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:10,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:40:10,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:40:10,213 INFO L87 Difference]: Start difference. First operand 699 states and 1116 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:40:12,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:12,688 INFO L93 Difference]: Finished difference Result 2262 states and 3731 transitions. [2022-07-12 05:40:12,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 05:40:12,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 100 [2022-07-12 05:40:12,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:12,697 INFO L225 Difference]: With dead ends: 2262 [2022-07-12 05:40:12,697 INFO L226 Difference]: Without dead ends: 1770 [2022-07-12 05:40:12,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:40:12,700 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 3417 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 3239 mSolverCounterSat, 812 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3601 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 4051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 812 IncrementalHoareTripleChecker+Valid, 3239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:12,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3601 Valid, 2726 Invalid, 4051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [812 Valid, 3239 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 05:40:12,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2022-07-12 05:40:12,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1583. [2022-07-12 05:40:12,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1258 states have (on average 1.6534181240063592) internal successors, (2080), 1301 states have internal predecessors, (2080), 259 states have call successors, (259), 60 states have call predecessors, (259), 65 states have return successors, (268), 236 states have call predecessors, (268), 254 states have call successors, (268) [2022-07-12 05:40:12,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2607 transitions. [2022-07-12 05:40:12,742 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2607 transitions. Word has length 100 [2022-07-12 05:40:12,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:12,743 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 2607 transitions. [2022-07-12 05:40:12,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:40:12,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2607 transitions. [2022-07-12 05:40:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-12 05:40:12,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:12,746 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-07-12 05:40:12,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:12,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-12 05:40:12,959 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:12,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:12,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2113386268, now seen corresponding path program 1 times [2022-07-12 05:40:12,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:12,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628269554] [2022-07-12 05:40:12,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:12,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:40:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:40:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:40:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 05:40:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:40:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 05:40:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-12 05:40:13,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:13,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628269554] [2022-07-12 05:40:13,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628269554] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:13,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675809662] [2022-07-12 05:40:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:13,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:13,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:13,404 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:13,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-12 05:40:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:13,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 2111 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 05:40:13,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:13,776 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 05:40:13,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:13,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675809662] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:13,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:13,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-12 05:40:13,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636348872] [2022-07-12 05:40:13,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:13,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:40:13,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:13,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:40:13,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:40:13,779 INFO L87 Difference]: Start difference. First operand 1583 states and 2607 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 05:40:14,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:14,189 INFO L93 Difference]: Finished difference Result 2983 states and 5020 transitions. [2022-07-12 05:40:14,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:40:14,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2022-07-12 05:40:14,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:14,197 INFO L225 Difference]: With dead ends: 2983 [2022-07-12 05:40:14,198 INFO L226 Difference]: Without dead ends: 1607 [2022-07-12 05:40:14,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:40:14,203 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 877 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:14,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 2361 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 05:40:14,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2022-07-12 05:40:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1607. [2022-07-12 05:40:14,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1279 states have (on average 1.6544175136825645) internal successors, (2116), 1322 states have internal predecessors, (2116), 259 states have call successors, (259), 63 states have call predecessors, (259), 68 states have return successors, (271), 236 states have call predecessors, (271), 254 states have call successors, (271) [2022-07-12 05:40:14,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2646 transitions. [2022-07-12 05:40:14,252 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2646 transitions. Word has length 153 [2022-07-12 05:40:14,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:14,252 INFO L495 AbstractCegarLoop]: Abstraction has 1607 states and 2646 transitions. [2022-07-12 05:40:14,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 05:40:14,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2646 transitions. [2022-07-12 05:40:14,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-12 05:40:14,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:14,256 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2022-07-12 05:40:14,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:14,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:14,475 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:14,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:14,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1096950762, now seen corresponding path program 1 times [2022-07-12 05:40:14,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:14,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710327969] [2022-07-12 05:40:14,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:14,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:40:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:40:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:40:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 05:40:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 05:40:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 05:40:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 05:40:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:14,858 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 05:40:14,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:14,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710327969] [2022-07-12 05:40:14,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710327969] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:14,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469002448] [2022-07-12 05:40:14,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:14,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:14,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:14,860 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:14,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-12 05:40:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:15,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 2113 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 05:40:15,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:15,295 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 05:40:15,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:15,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469002448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:15,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:15,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-12 05:40:15,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661917185] [2022-07-12 05:40:15,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:15,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:40:15,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:15,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:40:15,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:40:15,296 INFO L87 Difference]: Start difference. First operand 1607 states and 2646 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-12 05:40:17,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:17,541 INFO L93 Difference]: Finished difference Result 4298 states and 7128 transitions. [2022-07-12 05:40:17,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 05:40:17,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 154 [2022-07-12 05:40:17,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:17,559 INFO L225 Difference]: With dead ends: 4298 [2022-07-12 05:40:17,559 INFO L226 Difference]: Without dead ends: 2738 [2022-07-12 05:40:17,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-07-12 05:40:17,569 INFO L413 NwaCegarLoop]: 1163 mSDtfsCounter, 1791 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 4680 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1874 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 5056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 4680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:17,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1874 Valid, 2769 Invalid, 5056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 4680 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 05:40:17,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2022-07-12 05:40:17,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 2518. [2022-07-12 05:40:17,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 1978 states have (on average 1.634479271991911) internal successors, (3233), 2030 states have internal predecessors, (3233), 425 states have call successors, (425), 95 states have call predecessors, (425), 114 states have return successors, (473), 403 states have call predecessors, (473), 420 states have call successors, (473) [2022-07-12 05:40:17,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 4131 transitions. [2022-07-12 05:40:17,685 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 4131 transitions. Word has length 154 [2022-07-12 05:40:17,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:17,685 INFO L495 AbstractCegarLoop]: Abstraction has 2518 states and 4131 transitions. [2022-07-12 05:40:17,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-12 05:40:17,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 4131 transitions. [2022-07-12 05:40:17,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-12 05:40:17,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:17,699 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-07-12 05:40:17,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:17,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:17,916 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:17,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:17,917 INFO L85 PathProgramCache]: Analyzing trace with hash -2098133100, now seen corresponding path program 1 times [2022-07-12 05:40:17,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:17,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678015732] [2022-07-12 05:40:17,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:17,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:40:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:40:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 05:40:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 05:40:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 05:40:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 05:40:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 05:40:18,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:18,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678015732] [2022-07-12 05:40:18,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678015732] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:18,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925865107] [2022-07-12 05:40:18,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:18,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:18,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:18,303 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:18,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-12 05:40:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:18,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 2110 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 05:40:18,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:18,685 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 05:40:18,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:18,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925865107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:18,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:18,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-12 05:40:18,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457138949] [2022-07-12 05:40:18,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:18,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:40:18,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:18,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:40:18,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:40:18,687 INFO L87 Difference]: Start difference. First operand 2518 states and 4131 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 05:40:19,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:19,084 INFO L93 Difference]: Finished difference Result 4877 states and 8166 transitions. [2022-07-12 05:40:19,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:40:19,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 155 [2022-07-12 05:40:19,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:19,096 INFO L225 Difference]: With dead ends: 4877 [2022-07-12 05:40:19,096 INFO L226 Difference]: Without dead ends: 2566 [2022-07-12 05:40:19,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:40:19,107 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 878 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:19,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 2361 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 05:40:19,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2022-07-12 05:40:19,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2566. [2022-07-12 05:40:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 2020 states have (on average 1.636138613861386) internal successors, (3305), 2072 states have internal predecessors, (3305), 425 states have call successors, (425), 101 states have call predecessors, (425), 120 states have return successors, (478), 403 states have call predecessors, (478), 420 states have call successors, (478) [2022-07-12 05:40:19,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 4208 transitions. [2022-07-12 05:40:19,212 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 4208 transitions. Word has length 155 [2022-07-12 05:40:19,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:19,212 INFO L495 AbstractCegarLoop]: Abstraction has 2566 states and 4208 transitions. [2022-07-12 05:40:19,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 05:40:19,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 4208 transitions. [2022-07-12 05:40:19,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 05:40:19,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:19,235 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-07-12 05:40:19,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:19,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:19,435 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:19,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:19,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1899860194, now seen corresponding path program 1 times [2022-07-12 05:40:19,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:19,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359695578] [2022-07-12 05:40:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:19,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:40:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:40:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:40:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 05:40:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 05:40:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 05:40:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:19,814 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-12 05:40:19,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:19,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359695578] [2022-07-12 05:40:19,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359695578] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:19,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920506429] [2022-07-12 05:40:19,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:19,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:19,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:19,816 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:19,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-12 05:40:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:20,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 2112 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 05:40:20,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 05:40:20,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:20,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920506429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:20,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:20,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-12 05:40:20,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636025380] [2022-07-12 05:40:20,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:20,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:40:20,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:20,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:40:20,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:40:20,219 INFO L87 Difference]: Start difference. First operand 2566 states and 4208 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 05:40:20,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:20,629 INFO L93 Difference]: Finished difference Result 4973 states and 8304 transitions. [2022-07-12 05:40:20,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:40:20,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 157 [2022-07-12 05:40:20,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:20,643 INFO L225 Difference]: With dead ends: 4973 [2022-07-12 05:40:20,643 INFO L226 Difference]: Without dead ends: 2614 [2022-07-12 05:40:20,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:40:20,653 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 876 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:20,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 2361 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 05:40:20,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2022-07-12 05:40:20,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 2614. [2022-07-12 05:40:20,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2614 states, 2062 states have (on average 1.6377303588748788) internal successors, (3377), 2114 states have internal predecessors, (3377), 425 states have call successors, (425), 107 states have call predecessors, (425), 126 states have return successors, (483), 403 states have call predecessors, (483), 420 states have call successors, (483) [2022-07-12 05:40:20,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 4285 transitions. [2022-07-12 05:40:20,736 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 4285 transitions. Word has length 157 [2022-07-12 05:40:20,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:20,736 INFO L495 AbstractCegarLoop]: Abstraction has 2614 states and 4285 transitions. [2022-07-12 05:40:20,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 05:40:20,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 4285 transitions. [2022-07-12 05:40:20,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-12 05:40:20,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:20,740 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-07-12 05:40:20,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:20,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:20,958 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:20,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:20,959 INFO L85 PathProgramCache]: Analyzing trace with hash 288018188, now seen corresponding path program 1 times [2022-07-12 05:40:20,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:20,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972085264] [2022-07-12 05:40:20,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:20,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:40:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:40:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 05:40:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 05:40:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 05:40:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 05:40:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,380 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 05:40:21,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:21,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972085264] [2022-07-12 05:40:21,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972085264] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:21,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145774381] [2022-07-12 05:40:21,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:21,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:21,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:21,382 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:21,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-12 05:40:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:21,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 05:40:21,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 05:40:21,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:21,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145774381] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:21,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:21,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-12 05:40:21,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299923213] [2022-07-12 05:40:21,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:21,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:40:21,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:21,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:40:21,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:40:21,741 INFO L87 Difference]: Start difference. First operand 2614 states and 4285 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 05:40:22,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:22,131 INFO L93 Difference]: Finished difference Result 5069 states and 8442 transitions. [2022-07-12 05:40:22,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:40:22,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 159 [2022-07-12 05:40:22,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:22,143 INFO L225 Difference]: With dead ends: 5069 [2022-07-12 05:40:22,143 INFO L226 Difference]: Without dead ends: 2662 [2022-07-12 05:40:22,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:40:22,152 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 853 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:22,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 2361 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 05:40:22,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2022-07-12 05:40:22,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 2662. [2022-07-12 05:40:22,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2104 states have (on average 1.6392585551330798) internal successors, (3449), 2156 states have internal predecessors, (3449), 425 states have call successors, (425), 113 states have call predecessors, (425), 132 states have return successors, (488), 403 states have call predecessors, (488), 420 states have call successors, (488) [2022-07-12 05:40:22,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 4362 transitions. [2022-07-12 05:40:22,252 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 4362 transitions. Word has length 159 [2022-07-12 05:40:22,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:22,253 INFO L495 AbstractCegarLoop]: Abstraction has 2662 states and 4362 transitions. [2022-07-12 05:40:22,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 05:40:22,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 4362 transitions. [2022-07-12 05:40:22,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 05:40:22,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:22,258 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-07-12 05:40:22,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:22,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:22,471 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:22,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:22,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1518908770, now seen corresponding path program 1 times [2022-07-12 05:40:22,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:22,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037105358] [2022-07-12 05:40:22,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:22,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:40:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:40:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:40:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:40:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:40:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:40:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-12 05:40:22,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:22,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037105358] [2022-07-12 05:40:22,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037105358] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:22,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330407042] [2022-07-12 05:40:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:22,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:22,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:22,887 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:22,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-12 05:40:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:23,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 2116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 05:40:23,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 05:40:23,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:23,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330407042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:23,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:23,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-12 05:40:23,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246492875] [2022-07-12 05:40:23,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:23,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:40:23,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:23,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:40:23,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:40:23,326 INFO L87 Difference]: Start difference. First operand 2662 states and 4362 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-12 05:40:23,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:23,637 INFO L93 Difference]: Finished difference Result 2777 states and 4552 transitions. [2022-07-12 05:40:23,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:40:23,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 161 [2022-07-12 05:40:23,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:23,649 INFO L225 Difference]: With dead ends: 2777 [2022-07-12 05:40:23,649 INFO L226 Difference]: Without dead ends: 2762 [2022-07-12 05:40:23,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:40:23,651 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 890 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 1677 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 [2022-07-12 05:40:23,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 1677 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 05:40:23,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2022-07-12 05:40:23,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 2671. [2022-07-12 05:40:23,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2671 states, 2113 states have (on average 1.6365357311878845) internal successors, (3458), 2165 states have internal predecessors, (3458), 425 states have call successors, (425), 113 states have call predecessors, (425), 132 states have return successors, (488), 403 states have call predecessors, (488), 420 states have call successors, (488) [2022-07-12 05:40:23,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2671 states to 2671 states and 4371 transitions. [2022-07-12 05:40:23,732 INFO L78 Accepts]: Start accepts. Automaton has 2671 states and 4371 transitions. Word has length 161 [2022-07-12 05:40:23,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:23,733 INFO L495 AbstractCegarLoop]: Abstraction has 2671 states and 4371 transitions. [2022-07-12 05:40:23,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-12 05:40:23,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2671 states and 4371 transitions. [2022-07-12 05:40:23,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 05:40:23,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:23,737 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:23,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:23,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:23,955 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:23,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:23,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1800866105, now seen corresponding path program 1 times [2022-07-12 05:40:23,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:23,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167103898] [2022-07-12 05:40:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:23,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:40:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:40:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:40:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:40:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:40:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:40:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:40:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-12 05:40:24,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:24,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167103898] [2022-07-12 05:40:24,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167103898] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:24,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365202806] [2022-07-12 05:40:24,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:24,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:24,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:24,349 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:24,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-12 05:40:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:24,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 2132 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 05:40:24,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 05:40:24,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:24,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365202806] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:24,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:24,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-12 05:40:24,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212080284] [2022-07-12 05:40:24,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:24,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:40:24,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:24,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:40:24,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-12 05:40:24,703 INFO L87 Difference]: Start difference. First operand 2671 states and 4371 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 05:40:25,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:25,009 INFO L93 Difference]: Finished difference Result 2911 states and 4709 transitions. [2022-07-12 05:40:25,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 05:40:25,010 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2022-07-12 05:40:25,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:25,022 INFO L225 Difference]: With dead ends: 2911 [2022-07-12 05:40:25,022 INFO L226 Difference]: Without dead ends: 2896 [2022-07-12 05:40:25,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:40:25,024 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 908 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 3731 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:25,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 3731 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 05:40:25,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2022-07-12 05:40:25,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 2837. [2022-07-12 05:40:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2837 states, 2247 states have (on average 1.6297285269247885) internal successors, (3662), 2299 states have internal predecessors, (3662), 441 states have call successors, (441), 131 states have call predecessors, (441), 148 states have return successors, (507), 417 states have call predecessors, (507), 436 states have call successors, (507) [2022-07-12 05:40:25,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2837 states to 2837 states and 4610 transitions. [2022-07-12 05:40:25,125 INFO L78 Accepts]: Start accepts. Automaton has 2837 states and 4610 transitions. Word has length 167 [2022-07-12 05:40:25,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:25,125 INFO L495 AbstractCegarLoop]: Abstraction has 2837 states and 4610 transitions. [2022-07-12 05:40:25,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 05:40:25,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2837 states and 4610 transitions. [2022-07-12 05:40:25,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-12 05:40:25,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:25,132 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:25,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:25,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-12 05:40:25,351 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:25,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:25,351 INFO L85 PathProgramCache]: Analyzing trace with hash 161590231, now seen corresponding path program 1 times [2022-07-12 05:40:25,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:25,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658636695] [2022-07-12 05:40:25,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:25,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:40:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:40:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:40:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:40:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:40:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:40:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:40:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:40:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:25,865 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 05:40:25,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:25,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658636695] [2022-07-12 05:40:25,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658636695] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:25,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863674618] [2022-07-12 05:40:25,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:25,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:25,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:25,867 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:25,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-12 05:40:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:26,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 2169 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 05:40:26,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:26,165 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-12 05:40:26,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:26,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863674618] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:26,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:26,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2022-07-12 05:40:26,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918571887] [2022-07-12 05:40:26,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:26,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:40:26,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:26,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:40:26,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-12 05:40:26,167 INFO L87 Difference]: Start difference. First operand 2837 states and 4610 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 05:40:26,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:26,278 INFO L93 Difference]: Finished difference Result 5648 states and 9190 transitions. [2022-07-12 05:40:26,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:40:26,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 178 [2022-07-12 05:40:26,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:26,293 INFO L225 Difference]: With dead ends: 5648 [2022-07-12 05:40:26,293 INFO L226 Difference]: Without dead ends: 2806 [2022-07-12 05:40:26,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2022-07-12 05:40:26,298 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 11 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2784 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:26,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2784 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:40:26,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2022-07-12 05:40:26,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2806. [2022-07-12 05:40:26,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 2219 states have (on average 1.629562866155926) internal successors, (3616), 2269 states have internal predecessors, (3616), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2022-07-12 05:40:26,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 4560 transitions. [2022-07-12 05:40:26,376 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 4560 transitions. Word has length 178 [2022-07-12 05:40:26,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:26,376 INFO L495 AbstractCegarLoop]: Abstraction has 2806 states and 4560 transitions. [2022-07-12 05:40:26,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 05:40:26,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 4560 transitions. [2022-07-12 05:40:26,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-12 05:40:26,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:26,380 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:26,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:26,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-12 05:40:26,596 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:26,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:26,596 INFO L85 PathProgramCache]: Analyzing trace with hash -738863476, now seen corresponding path program 1 times [2022-07-12 05:40:26,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:26,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464125789] [2022-07-12 05:40:26,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:26,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:26,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:26,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:26,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:26,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:40:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:26,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:26,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:26,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 05:40:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:26,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:26,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:27,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:27,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:27,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:27,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:40:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:27,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:40:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:27,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:27,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:27,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:40:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:27,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:40:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:27,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:40:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:27,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:40:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:27,159 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 05:40:27,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:27,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464125789] [2022-07-12 05:40:27,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464125789] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:27,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058888429] [2022-07-12 05:40:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:27,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:27,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:27,161 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:27,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-12 05:40:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:27,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 2172 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-12 05:40:27,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 05:40:27,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:27,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058888429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:27,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:27,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2022-07-12 05:40:27,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232054015] [2022-07-12 05:40:27,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:27,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:40:27,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:27,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:40:27,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-07-12 05:40:27,516 INFO L87 Difference]: Start difference. First operand 2806 states and 4560 transitions. Second operand has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 05:40:27,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:27,644 INFO L93 Difference]: Finished difference Result 5581 states and 9084 transitions. [2022-07-12 05:40:27,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:40:27,644 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 180 [2022-07-12 05:40:27,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:27,653 INFO L225 Difference]: With dead ends: 5581 [2022-07-12 05:40:27,653 INFO L226 Difference]: Without dead ends: 2806 [2022-07-12 05:40:27,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2022-07-12 05:40:27,659 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 143 mSDsluCounter, 4570 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5519 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:27,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5519 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:40:27,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2022-07-12 05:40:27,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2785. [2022-07-12 05:40:27,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2198 states have (on average 1.629663330300273) internal successors, (3582), 2248 states have internal predecessors, (3582), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2022-07-12 05:40:27,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4526 transitions. [2022-07-12 05:40:27,736 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4526 transitions. Word has length 180 [2022-07-12 05:40:27,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:27,736 INFO L495 AbstractCegarLoop]: Abstraction has 2785 states and 4526 transitions. [2022-07-12 05:40:27,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 05:40:27,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4526 transitions. [2022-07-12 05:40:27,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-12 05:40:27,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:27,739 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:27,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:27,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-12 05:40:27,948 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:27,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:27,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1801077873, now seen corresponding path program 1 times [2022-07-12 05:40:27,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:27,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893576670] [2022-07-12 05:40:27,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:27,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 05:40:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 05:40:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:40:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:40:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:40:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:40:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:40:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:40:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 05:40:28,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:28,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893576670] [2022-07-12 05:40:28,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893576670] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:28,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061277133] [2022-07-12 05:40:28,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:28,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:28,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:28,470 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:28,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-12 05:40:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:28,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 2178 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 05:40:28,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 05:40:28,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:28,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061277133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:28,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:28,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2022-07-12 05:40:28,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838184789] [2022-07-12 05:40:28,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:28,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:40:28,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:28,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:40:28,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2022-07-12 05:40:28,771 INFO L87 Difference]: Start difference. First operand 2785 states and 4526 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 05:40:28,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:28,888 INFO L93 Difference]: Finished difference Result 5539 states and 9018 transitions. [2022-07-12 05:40:28,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:40:28,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 182 [2022-07-12 05:40:28,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:28,897 INFO L225 Difference]: With dead ends: 5539 [2022-07-12 05:40:28,898 INFO L226 Difference]: Without dead ends: 2785 [2022-07-12 05:40:28,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-07-12 05:40:28,904 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 176 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:28,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2617 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:40:28,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2022-07-12 05:40:28,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2785. [2022-07-12 05:40:28,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2198 states have (on average 1.629208371246588) internal successors, (3581), 2248 states have internal predecessors, (3581), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2022-07-12 05:40:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4525 transitions. [2022-07-12 05:40:28,993 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4525 transitions. Word has length 182 [2022-07-12 05:40:28,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:28,993 INFO L495 AbstractCegarLoop]: Abstraction has 2785 states and 4525 transitions. [2022-07-12 05:40:28,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 05:40:28,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4525 transitions. [2022-07-12 05:40:28,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-12 05:40:28,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:28,997 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:29,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:29,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-12 05:40:29,212 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:29,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:29,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2123248668, now seen corresponding path program 1 times [2022-07-12 05:40:29,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:29,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936501178] [2022-07-12 05:40:29,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:29,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:40:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:40:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:40:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:40:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:40:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:40:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:40:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:40:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 05:40:29,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:29,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936501178] [2022-07-12 05:40:29,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936501178] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:29,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637078850] [2022-07-12 05:40:29,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:29,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:29,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:29,726 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:29,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-12 05:40:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:29,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 05:40:29,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:30,005 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-12 05:40:30,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:30,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637078850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:30,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:30,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 17 [2022-07-12 05:40:30,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707297307] [2022-07-12 05:40:30,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:30,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 05:40:30,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:30,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 05:40:30,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-07-12 05:40:30,007 INFO L87 Difference]: Start difference. First operand 2785 states and 4525 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 05:40:30,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:30,086 INFO L93 Difference]: Finished difference Result 5498 states and 8963 transitions. [2022-07-12 05:40:30,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 05:40:30,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 183 [2022-07-12 05:40:30,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:30,097 INFO L225 Difference]: With dead ends: 5498 [2022-07-12 05:40:30,097 INFO L226 Difference]: Without dead ends: 2745 [2022-07-12 05:40:30,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-07-12 05:40:30,103 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 13 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:30,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2782 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:40:30,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2022-07-12 05:40:30,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2745. [2022-07-12 05:40:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2745 states, 2161 states have (on average 1.6279500231374364) internal successors, (3518), 2209 states have internal predecessors, (3518), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2022-07-12 05:40:30,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 4458 transitions. [2022-07-12 05:40:30,178 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 4458 transitions. Word has length 183 [2022-07-12 05:40:30,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:30,178 INFO L495 AbstractCegarLoop]: Abstraction has 2745 states and 4458 transitions. [2022-07-12 05:40:30,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 05:40:30,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 4458 transitions. [2022-07-12 05:40:30,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-12 05:40:30,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:30,182 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:30,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:30,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-12 05:40:30,400 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:30,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:30,400 INFO L85 PathProgramCache]: Analyzing trace with hash -162275507, now seen corresponding path program 1 times [2022-07-12 05:40:30,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:30,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354306996] [2022-07-12 05:40:30,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:30,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:40:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 05:40:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:40:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:40:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:40:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:40:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:40:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:40:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 05:40:30,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:30,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354306996] [2022-07-12 05:40:30,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354306996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:30,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:40:30,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 05:40:30,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053137248] [2022-07-12 05:40:30,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:30,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 05:40:30,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:30,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 05:40:30,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:40:30,812 INFO L87 Difference]: Start difference. First operand 2745 states and 4458 transitions. Second operand has 11 states, 10 states have (on average 12.4) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 05:40:38,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:38,041 INFO L93 Difference]: Finished difference Result 6322 states and 10406 transitions. [2022-07-12 05:40:38,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 05:40:38,042 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.4) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 184 [2022-07-12 05:40:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:38,056 INFO L225 Difference]: With dead ends: 6322 [2022-07-12 05:40:38,056 INFO L226 Difference]: Without dead ends: 3678 [2022-07-12 05:40:38,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2022-07-12 05:40:38,065 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 1099 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 6798 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 7116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 6798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:38,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 3182 Invalid, 7116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [318 Valid, 6798 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-07-12 05:40:38,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3678 states. [2022-07-12 05:40:38,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3678 to 2745. [2022-07-12 05:40:38,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2745 states, 2161 states have (on average 1.6274872744099953) internal successors, (3517), 2209 states have internal predecessors, (3517), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2022-07-12 05:40:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 4457 transitions. [2022-07-12 05:40:38,293 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 4457 transitions. Word has length 184 [2022-07-12 05:40:38,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:38,293 INFO L495 AbstractCegarLoop]: Abstraction has 2745 states and 4457 transitions. [2022-07-12 05:40:38,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.4) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 05:40:38,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 4457 transitions. [2022-07-12 05:40:38,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-12 05:40:38,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:38,297 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:38,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 05:40:38,298 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:38,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:38,298 INFO L85 PathProgramCache]: Analyzing trace with hash -373773566, now seen corresponding path program 1 times [2022-07-12 05:40:38,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:38,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274946795] [2022-07-12 05:40:38,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:38,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:40:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 05:40:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:40:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:40:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:40:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:40:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:40:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:40:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 05:40:38,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:38,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274946795] [2022-07-12 05:40:38,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274946795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:38,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:40:38,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 05:40:38,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146364104] [2022-07-12 05:40:38,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:38,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 05:40:38,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:38,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 05:40:38,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:40:38,702 INFO L87 Difference]: Start difference. First operand 2745 states and 4457 transitions. Second operand has 11 states, 10 states have (on average 12.6) internal successors, (126), 6 states have internal predecessors, (126), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 05:40:45,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:45,373 INFO L93 Difference]: Finished difference Result 6338 states and 10433 transitions. [2022-07-12 05:40:45,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 05:40:45,374 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.6) internal successors, (126), 6 states have internal predecessors, (126), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 185 [2022-07-12 05:40:45,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:45,385 INFO L225 Difference]: With dead ends: 6338 [2022-07-12 05:40:45,386 INFO L226 Difference]: Without dead ends: 3636 [2022-07-12 05:40:45,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2022-07-12 05:40:45,392 INFO L413 NwaCegarLoop]: 953 mSDtfsCounter, 1075 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 6536 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 3207 SdHoareTripleChecker+Invalid, 6839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 6536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:45,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 3207 Invalid, 6839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 6536 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-12 05:40:45,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2022-07-12 05:40:45,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 2733. [2022-07-12 05:40:45,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2149 states have (on average 1.6300604932526757) internal successors, (3503), 2197 states have internal predecessors, (3503), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2022-07-12 05:40:45,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4443 transitions. [2022-07-12 05:40:45,635 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4443 transitions. Word has length 185 [2022-07-12 05:40:45,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:45,635 INFO L495 AbstractCegarLoop]: Abstraction has 2733 states and 4443 transitions. [2022-07-12 05:40:45,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.6) internal successors, (126), 6 states have internal predecessors, (126), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 05:40:45,636 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4443 transitions. [2022-07-12 05:40:45,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-12 05:40:45,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:45,640 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:45,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 05:40:45,641 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:45,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:45,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1548995776, now seen corresponding path program 1 times [2022-07-12 05:40:45,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:45,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649980791] [2022-07-12 05:40:45,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:45,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:45,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:45,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:45,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:45,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:40:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:45,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:45,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:45,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 05:40:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:45,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:45,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:46,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:46,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:46,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:46,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:40:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:46,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:40:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:46,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:46,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:46,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:40:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:46,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:40:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:46,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:40:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:46,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:40:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:46,095 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 05:40:46,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:46,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649980791] [2022-07-12 05:40:46,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649980791] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:46,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:40:46,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 05:40:46,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520255747] [2022-07-12 05:40:46,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:46,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 05:40:46,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:46,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 05:40:46,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:40:46,097 INFO L87 Difference]: Start difference. First operand 2733 states and 4443 transitions. Second operand has 11 states, 10 states have (on average 12.5) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 05:40:53,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:53,029 INFO L93 Difference]: Finished difference Result 6389 states and 10504 transitions. [2022-07-12 05:40:53,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 05:40:53,029 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.5) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 185 [2022-07-12 05:40:53,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:53,040 INFO L225 Difference]: With dead ends: 6389 [2022-07-12 05:40:53,041 INFO L226 Difference]: Without dead ends: 3693 [2022-07-12 05:40:53,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2022-07-12 05:40:53,046 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 1536 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 6481 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 6951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 6481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:53,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 3091 Invalid, 6951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 6481 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-12 05:40:53,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3693 states. [2022-07-12 05:40:53,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3693 to 2737. [2022-07-12 05:40:53,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2737 states, 2153 states have (on average 1.6284254528564794) internal successors, (3506), 2201 states have internal predecessors, (3506), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2022-07-12 05:40:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 4446 transitions. [2022-07-12 05:40:53,272 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 4446 transitions. Word has length 185 [2022-07-12 05:40:53,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:53,273 INFO L495 AbstractCegarLoop]: Abstraction has 2737 states and 4446 transitions. [2022-07-12 05:40:53,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.5) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 05:40:53,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 4446 transitions. [2022-07-12 05:40:53,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-12 05:40:53,276 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:53,276 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:53,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 05:40:53,277 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:53,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:53,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1856819284, now seen corresponding path program 1 times [2022-07-12 05:40:53,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:53,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818245088] [2022-07-12 05:40:53,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:53,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:40:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:40:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:40:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:40:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:40:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:40:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:40:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:40:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:53,879 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:40:53,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:53,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818245088] [2022-07-12 05:40:53,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818245088] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:53,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947297182] [2022-07-12 05:40:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:53,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:53,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:53,881 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:53,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-07-12 05:40:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:54,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 2183 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 05:40:54,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-12 05:40:54,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:54,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947297182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:54,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:54,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 21 [2022-07-12 05:40:54,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294523562] [2022-07-12 05:40:54,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:54,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:40:54,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:54,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:40:54,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-07-12 05:40:54,378 INFO L87 Difference]: Start difference. First operand 2737 states and 4446 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 6 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-12 05:40:55,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:55,746 INFO L93 Difference]: Finished difference Result 5456 states and 8904 transitions. [2022-07-12 05:40:55,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:40:55,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 6 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) Word has length 186 [2022-07-12 05:40:55,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:55,755 INFO L225 Difference]: With dead ends: 5456 [2022-07-12 05:40:55,755 INFO L226 Difference]: Without dead ends: 2834 [2022-07-12 05:40:55,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-07-12 05:40:55,760 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 1849 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 2194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:55,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1954 Valid, 1833 Invalid, 2194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 1714 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 05:40:55,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2022-07-12 05:40:56,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 2659. [2022-07-12 05:40:56,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2659 states, 2051 states have (on average 1.613359336908825) internal successors, (3309), 2113 states have internal predecessors, (3309), 471 states have call successors, (471), 123 states have call predecessors, (471), 136 states have return successors, (520), 444 states have call predecessors, (520), 466 states have call successors, (520) [2022-07-12 05:40:56,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2659 states to 2659 states and 4300 transitions. [2022-07-12 05:40:56,022 INFO L78 Accepts]: Start accepts. Automaton has 2659 states and 4300 transitions. Word has length 186 [2022-07-12 05:40:56,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:40:56,022 INFO L495 AbstractCegarLoop]: Abstraction has 2659 states and 4300 transitions. [2022-07-12 05:40:56,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 6 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-12 05:40:56,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2659 states and 4300 transitions. [2022-07-12 05:40:56,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-12 05:40:56,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:40:56,025 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:40:56,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-07-12 05:40:56,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-07-12 05:40:56,240 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:40:56,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:40:56,240 INFO L85 PathProgramCache]: Analyzing trace with hash -360811114, now seen corresponding path program 1 times [2022-07-12 05:40:56,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:40:56,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714005460] [2022-07-12 05:40:56,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:56,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:40:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:40:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:40:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:40:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:40:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:40:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:40:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:40:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:40:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:40:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:40:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 05:40:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:40:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:56,729 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 05:40:56,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:40:56,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714005460] [2022-07-12 05:40:56,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714005460] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:40:56,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166249407] [2022-07-12 05:40:56,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:40:56,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:40:56,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:40:56,731 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:40:56,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-07-12 05:40:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:40:57,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 2186 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-12 05:40:57,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:40:57,201 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 05:40:57,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:40:57,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166249407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:40:57,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:40:57,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 23 [2022-07-12 05:40:57,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292023538] [2022-07-12 05:40:57,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:40:57,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:40:57,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:40:57,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:40:57,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2022-07-12 05:40:57,203 INFO L87 Difference]: Start difference. First operand 2659 states and 4300 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-12 05:40:59,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:40:59,912 INFO L93 Difference]: Finished difference Result 9073 states and 14925 transitions. [2022-07-12 05:40:59,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 05:40:59,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 186 [2022-07-12 05:40:59,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:40:59,931 INFO L225 Difference]: With dead ends: 9073 [2022-07-12 05:40:59,931 INFO L226 Difference]: Without dead ends: 6529 [2022-07-12 05:40:59,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2022-07-12 05:40:59,938 INFO L413 NwaCegarLoop]: 1247 mSDtfsCounter, 3042 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 4087 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3122 SdHoareTripleChecker+Valid, 3631 SdHoareTripleChecker+Invalid, 4724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 4087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:40:59,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3122 Valid, 3631 Invalid, 4724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 4087 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 05:40:59,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6529 states. [2022-07-12 05:41:00,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6529 to 6061. [2022-07-12 05:41:00,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6061 states, 4672 states have (on average 1.6235017123287672) internal successors, (7585), 4815 states have internal predecessors, (7585), 1061 states have call successors, (1061), 268 states have call predecessors, (1061), 327 states have return successors, (1262), 1021 states have call predecessors, (1262), 1056 states have call successors, (1262) [2022-07-12 05:41:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6061 states to 6061 states and 9908 transitions. [2022-07-12 05:41:00,477 INFO L78 Accepts]: Start accepts. Automaton has 6061 states and 9908 transitions. Word has length 186 [2022-07-12 05:41:00,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:00,477 INFO L495 AbstractCegarLoop]: Abstraction has 6061 states and 9908 transitions. [2022-07-12 05:41:00,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-12 05:41:00,478 INFO L276 IsEmpty]: Start isEmpty. Operand 6061 states and 9908 transitions. [2022-07-12 05:41:00,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-12 05:41:00,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:00,481 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:41:00,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:00,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:00,698 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:00,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:00,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1575623402, now seen corresponding path program 1 times [2022-07-12 05:41:00,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:00,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074336427] [2022-07-12 05:41:00,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:00,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:00,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:00,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:00,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:00,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:41:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:00,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:00,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:41:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:41:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:41:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:41:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:41:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 05:41:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 05:41:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 05:41:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-12 05:41:01,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:01,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074336427] [2022-07-12 05:41:01,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074336427] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:01,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971103783] [2022-07-12 05:41:01,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:01,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:01,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:01,329 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:41:01,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-07-12 05:41:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:01,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 2182 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-12 05:41:01,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 05:41:01,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:01,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971103783] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:01,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:01,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 23 [2022-07-12 05:41:01,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747187875] [2022-07-12 05:41:01,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:01,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:41:01,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:01,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:41:01,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-07-12 05:41:01,773 INFO L87 Difference]: Start difference. First operand 6061 states and 9908 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-12 05:41:04,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:04,281 INFO L93 Difference]: Finished difference Result 13105 states and 21599 transitions. [2022-07-12 05:41:04,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 05:41:04,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) Word has length 188 [2022-07-12 05:41:04,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:04,305 INFO L225 Difference]: With dead ends: 13105 [2022-07-12 05:41:04,305 INFO L226 Difference]: Without dead ends: 7159 [2022-07-12 05:41:04,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 228 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=945, Unknown=0, NotChecked=0, Total=1056 [2022-07-12 05:41:04,320 INFO L413 NwaCegarLoop]: 1058 mSDtfsCounter, 2183 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 3450 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2267 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 3968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 3450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 05:41:04,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2267 Valid, 2683 Invalid, 3968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 3450 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 05:41:04,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7159 states. [2022-07-12 05:41:04,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7159 to 6336. [2022-07-12 05:41:04,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6336 states, 4873 states have (on average 1.6158423968807716) internal successors, (7874), 5034 states have internal predecessors, (7874), 1097 states have call successors, (1097), 283 states have call predecessors, (1097), 365 states have return successors, (1395), 1062 states have call predecessors, (1395), 1092 states have call successors, (1395) [2022-07-12 05:41:04,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6336 states to 6336 states and 10366 transitions. [2022-07-12 05:41:04,854 INFO L78 Accepts]: Start accepts. Automaton has 6336 states and 10366 transitions. Word has length 188 [2022-07-12 05:41:04,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:04,855 INFO L495 AbstractCegarLoop]: Abstraction has 6336 states and 10366 transitions. [2022-07-12 05:41:04,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-12 05:41:04,855 INFO L276 IsEmpty]: Start isEmpty. Operand 6336 states and 10366 transitions. [2022-07-12 05:41:04,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-12 05:41:04,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:04,858 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:41:04,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-07-12 05:41:05,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:05,072 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:05,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:05,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1048691848, now seen corresponding path program 1 times [2022-07-12 05:41:05,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:05,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709367379] [2022-07-12 05:41:05,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:05,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:41:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:41:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:41:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:41:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:41:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:41:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:41:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:41:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:41:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 05:41:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:05,582 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 05:41:05,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:05,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709367379] [2022-07-12 05:41:05,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709367379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:05,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:41:05,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 05:41:05,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565196359] [2022-07-12 05:41:05,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:05,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 05:41:05,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:05,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 05:41:05,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:41:05,584 INFO L87 Difference]: Start difference. First operand 6336 states and 10366 transitions. Second operand has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 9 states have internal predecessors, (120), 5 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-12 05:41:39,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:39,249 INFO L93 Difference]: Finished difference Result 33006 states and 56342 transitions. [2022-07-12 05:41:39,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-07-12 05:41:39,249 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 9 states have internal predecessors, (120), 5 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 193 [2022-07-12 05:41:39,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:39,349 INFO L225 Difference]: With dead ends: 33006 [2022-07-12 05:41:39,349 INFO L226 Difference]: Without dead ends: 26789 [2022-07-12 05:41:39,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3021 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1595, Invalid=6777, Unknown=0, NotChecked=0, Total=8372 [2022-07-12 05:41:39,380 INFO L413 NwaCegarLoop]: 1800 mSDtfsCounter, 11856 mSDsluCounter, 3901 mSDsCounter, 0 mSdLazyCounter, 18649 mSolverCounterSat, 6947 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11907 SdHoareTripleChecker+Valid, 5701 SdHoareTripleChecker+Invalid, 25596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6947 IncrementalHoareTripleChecker+Valid, 18649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2022-07-12 05:41:39,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11907 Valid, 5701 Invalid, 25596 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6947 Valid, 18649 Invalid, 0 Unknown, 0 Unchecked, 23.2s Time] [2022-07-12 05:41:39,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26789 states. [2022-07-12 05:41:40,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26789 to 6632. [2022-07-12 05:41:40,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6632 states, 5103 states have (on average 1.6049382716049383) internal successors, (8190), 5252 states have internal predecessors, (8190), 1137 states have call successors, (1137), 304 states have call predecessors, (1137), 391 states have return successors, (1419), 1119 states have call predecessors, (1419), 1132 states have call successors, (1419) [2022-07-12 05:41:40,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 10746 transitions. [2022-07-12 05:41:40,516 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 10746 transitions. Word has length 193 [2022-07-12 05:41:40,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:40,517 INFO L495 AbstractCegarLoop]: Abstraction has 6632 states and 10746 transitions. [2022-07-12 05:41:40,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 9 states have internal predecessors, (120), 5 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-12 05:41:40,517 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 10746 transitions. [2022-07-12 05:41:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-12 05:41:40,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:40,520 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:41:40,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-12 05:41:40,520 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:40,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:40,521 INFO L85 PathProgramCache]: Analyzing trace with hash 879580854, now seen corresponding path program 1 times [2022-07-12 05:41:40,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:40,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706916925] [2022-07-12 05:41:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:40,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:40,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:40,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:40,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:40,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:41:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:40,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:40,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:40,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:41:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:40,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:40,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:40,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:41,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:41,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:41:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:41,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:41:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:41,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:41,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:41:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:41:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:41,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:41:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:41,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:41:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:41,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:41:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:41,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 05:41:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:41,245 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 05:41:41,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:41,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706916925] [2022-07-12 05:41:41,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706916925] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:41,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777517628] [2022-07-12 05:41:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:41,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:41,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:41,247 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:41:41,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-07-12 05:41:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:41,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 2198 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 05:41:41,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 05:41:41,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:41:41,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777517628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:41:41,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:41:41,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [23] total 26 [2022-07-12 05:41:41,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023394670] [2022-07-12 05:41:41,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:41:41,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:41:41,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:41,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:41:41,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2022-07-12 05:41:41,574 INFO L87 Difference]: Start difference. First operand 6632 states and 10746 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-12 05:41:42,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:41:42,506 INFO L93 Difference]: Finished difference Result 6955 states and 11266 transitions. [2022-07-12 05:41:42,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:41:42,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 193 [2022-07-12 05:41:42,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:41:42,533 INFO L225 Difference]: With dead ends: 6955 [2022-07-12 05:41:42,533 INFO L226 Difference]: Without dead ends: 6940 [2022-07-12 05:41:42,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2022-07-12 05:41:42,540 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 64 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 3811 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 [2022-07-12 05:41:42,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 3811 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:41:42,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6940 states. [2022-07-12 05:41:43,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6940 to 6680. [2022-07-12 05:41:43,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6680 states, 5151 states have (on average 1.5993011065812464) internal successors, (8238), 5300 states have internal predecessors, (8238), 1137 states have call successors, (1137), 304 states have call predecessors, (1137), 391 states have return successors, (1419), 1119 states have call predecessors, (1419), 1132 states have call successors, (1419) [2022-07-12 05:41:43,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6680 states to 6680 states and 10794 transitions. [2022-07-12 05:41:43,421 INFO L78 Accepts]: Start accepts. Automaton has 6680 states and 10794 transitions. Word has length 193 [2022-07-12 05:41:43,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:41:43,421 INFO L495 AbstractCegarLoop]: Abstraction has 6680 states and 10794 transitions. [2022-07-12 05:41:43,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-12 05:41:43,421 INFO L276 IsEmpty]: Start isEmpty. Operand 6680 states and 10794 transitions. [2022-07-12 05:41:43,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-07-12 05:41:43,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:41:43,426 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:41:43,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-07-12 05:41:43,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-07-12 05:41:43,627 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:41:43,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:41:43,627 INFO L85 PathProgramCache]: Analyzing trace with hash 421278368, now seen corresponding path program 1 times [2022-07-12 05:41:43,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:41:43,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159389567] [2022-07-12 05:41:43,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:43,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:41:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:43,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:43,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:43,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:41:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:43,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:41:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:43,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:43,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:41:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:43,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:41:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:43,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:41:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:41:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 05:41:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:41:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 05:41:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:41:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:41:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:41:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:41:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 05:41:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 05:41:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 05:41:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 05:41:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 05:41:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 10 proven. 39 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-07-12 05:41:44,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:41:44,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159389567] [2022-07-12 05:41:44,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159389567] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:41:44,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474956407] [2022-07-12 05:41:44,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:41:44,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:41:44,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:41:44,331 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:41:44,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-07-12 05:41:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:41:44,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 2303 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 05:41:44,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:41:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-12 05:41:44,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 05:41:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-12 05:41:45,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474956407] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 05:41:45,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 05:41:45,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 9, 8] total 38 [2022-07-12 05:41:45,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162881337] [2022-07-12 05:41:45,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 05:41:45,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-07-12 05:41:45,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:41:45,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-07-12 05:41:45,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1286, Unknown=0, NotChecked=0, Total=1406 [2022-07-12 05:41:45,553 INFO L87 Difference]: Start difference. First operand 6680 states and 10794 transitions. Second operand has 38 states, 38 states have (on average 8.947368421052632) internal successors, (340), 29 states have internal predecessors, (340), 13 states have call successors, (66), 9 states have call predecessors, (66), 18 states have return successors, (66), 18 states have call predecessors, (66), 13 states have call successors, (66)