./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_spec13_product24.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 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 17:13:08,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 17:13:08,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 17:13:08,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 17:13:08,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 17:13:08,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 17:13:08,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 17:13:08,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 17:13:08,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 17:13:08,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 17:13:08,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 17:13:08,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 17:13:08,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 17:13:08,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 17:13:08,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 17:13:08,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 17:13:08,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 17:13:08,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 17:13:08,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 17:13:08,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 17:13:08,527 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 17:13:08,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 17:13:08,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 17:13:08,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 17:13:08,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 17:13:08,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 17:13:08,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 17:13:08,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 17:13:08,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 17:13:08,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 17:13:08,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 17:13:08,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 17:13:08,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 17:13:08,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 17:13:08,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 17:13:08,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 17:13:08,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 17:13:08,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 17:13:08,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 17:13:08,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 17:13:08,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 17:13:08,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 17:13:08,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 17:13:08,552 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 17:13:08,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 17:13:08,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 17:13:08,553 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 17:13:08,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 17:13:08,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 17:13:08,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 17:13:08,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 17:13:08,554 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 17:13:08,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 17:13:08,555 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 17:13:08,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 17:13:08,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 17:13:08,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 17:13:08,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 17:13:08,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 17:13:08,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 17:13:08,556 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 17:13:08,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 17:13:08,556 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 17:13:08,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 17:13:08,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 17:13:08,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 17:13:08,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 17:13:08,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:13:08,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 17:13:08,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 17:13:08,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 17:13:08,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 17:13:08,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 17:13:08,557 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 17:13:08,558 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 17:13:08,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 17:13:08,558 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 [2022-07-13 17:13:08,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 17:13:08,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 17:13:08,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 17:13:08,770 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 17:13:08,771 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 17:13:08,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2022-07-13 17:13:08,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c744217ef/350c1346e5a94a0ab420673d2d3afa93/FLAG25566b65b [2022-07-13 17:13:09,231 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 17:13:09,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2022-07-13 17:13:09,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c744217ef/350c1346e5a94a0ab420673d2d3afa93/FLAG25566b65b [2022-07-13 17:13:09,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c744217ef/350c1346e5a94a0ab420673d2d3afa93 [2022-07-13 17:13:09,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 17:13:09,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 17:13:09,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 17:13:09,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 17:13:09,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 17:13:09,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:13:09" (1/1) ... [2022-07-13 17:13:09,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47dfb2a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:13:09, skipping insertion in model container [2022-07-13 17:13:09,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:13:09" (1/1) ... [2022-07-13 17:13:09,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 17:13:09,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 17:13:10,013 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_spec13_product24.cil.c[51490,51503] [2022-07-13 17:13:10,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:13:10,061 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 17:13:10,106 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_spec13_product24.cil.c[51490,51503] [2022-07-13 17:13:10,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:13:10,138 INFO L208 MainTranslator]: Completed translation [2022-07-13 17:13:10,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:13:10 WrapperNode [2022-07-13 17:13:10,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 17:13:10,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 17:13:10,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 17:13:10,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 17:13:10,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:13:10" (1/1) ... [2022-07-13 17:13:10,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:13:10" (1/1) ... [2022-07-13 17:13:10,202 INFO L137 Inliner]: procedures = 96, calls = 352, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 894 [2022-07-13 17:13:10,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 17:13:10,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 17:13:10,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 17:13:10,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 17:13:10,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:13:10" (1/1) ... [2022-07-13 17:13:10,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:13:10" (1/1) ... [2022-07-13 17:13:10,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:13:10" (1/1) ... [2022-07-13 17:13:10,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:13:10" (1/1) ... [2022-07-13 17:13:10,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:13:10" (1/1) ... [2022-07-13 17:13:10,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:13:10" (1/1) ... [2022-07-13 17:13:10,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:13:10" (1/1) ... [2022-07-13 17:13:10,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 17:13:10,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 17:13:10,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 17:13:10,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 17:13:10,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:13:10" (1/1) ... [2022-07-13 17:13:10,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:13:10,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:10,306 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) [2022-07-13 17:13:10,308 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 [2022-07-13 17:13:10,337 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-07-13 17:13:10,337 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-07-13 17:13:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 17:13:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-13 17:13:10,338 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-13 17:13:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-07-13 17:13:10,338 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-07-13 17:13:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-13 17:13:10,338 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-13 17:13:10,338 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2022-07-13 17:13:10,339 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2022-07-13 17:13:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-13 17:13:10,339 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-13 17:13:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-13 17:13:10,339 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-13 17:13:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-13 17:13:10,340 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-13 17:13:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-13 17:13:10,340 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-13 17:13:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-13 17:13:10,340 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-13 17:13:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-13 17:13:10,341 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-13 17:13:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-13 17:13:10,341 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-13 17:13:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-13 17:13:10,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-13 17:13:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-13 17:13:10,341 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-13 17:13:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-13 17:13:10,342 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-13 17:13:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-13 17:13:10,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-13 17:13:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-13 17:13:10,342 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-13 17:13:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-13 17:13:10,343 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-13 17:13:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-13 17:13:10,343 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-13 17:13:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-13 17:13:10,343 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-13 17:13:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-13 17:13:10,343 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-13 17:13:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-13 17:13:10,344 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-13 17:13:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 17:13:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-13 17:13:10,344 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-13 17:13:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-13 17:13:10,344 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-13 17:13:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-13 17:13:10,345 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-13 17:13:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-13 17:13:10,345 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-13 17:13:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-07-13 17:13:10,346 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-07-13 17:13:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 17:13:10,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 17:13:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-13 17:13:10,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-13 17:13:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-07-13 17:13:10,348 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-07-13 17:13:10,498 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 17:13:10,500 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 17:13:11,208 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 17:13:11,216 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 17:13:11,216 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-13 17:13:11,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:13:11 BoogieIcfgContainer [2022-07-13 17:13:11,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 17:13:11,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 17:13:11,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 17:13:11,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 17:13:11,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 05:13:09" (1/3) ... [2022-07-13 17:13:11,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c72be14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:13:11, skipping insertion in model container [2022-07-13 17:13:11,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:13:10" (2/3) ... [2022-07-13 17:13:11,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c72be14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:13:11, skipping insertion in model container [2022-07-13 17:13:11,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:13:11" (3/3) ... [2022-07-13 17:13:11,223 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product24.cil.c [2022-07-13 17:13:11,231 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 17:13:11,231 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 17:13:11,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 17:13:11,273 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@5a2602df, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@269c5180 [2022-07-13 17:13:11,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 17:13:11,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 628 states, 487 states have (on average 1.6714579055441479) internal successors, (814), 507 states have internal predecessors, (814), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2022-07-13 17:13:11,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 17:13:11,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:11,293 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] [2022-07-13 17:13:11,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:11,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:11,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1869945943, now seen corresponding path program 1 times [2022-07-13 17:13:11,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:11,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23877123] [2022-07-13 17:13:11,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:11,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:11,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:11,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:13:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:11,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:13:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:11,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:11,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:11,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 17:13:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:11,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:11,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:13:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:11,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:13:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:11,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:13:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:11,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:13:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:11,835 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:13:11,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:11,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23877123] [2022-07-13 17:13:11,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23877123] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:11,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164015911] [2022-07-13 17:13:11,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:11,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:11,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:11,838 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) [2022-07-13 17:13:11,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 17:13:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:12,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:13:12,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:12,141 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 17:13:12,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:12,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164015911] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:12,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:12,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-13 17:13:12,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693161075] [2022-07-13 17:13:12,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:12,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:13:12,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:12,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:13:12,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:13:12,175 INFO L87 Difference]: Start difference. First operand has 628 states, 487 states have (on average 1.6714579055441479) internal successors, (814), 507 states have internal predecessors, (814), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:13:12,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:12,330 INFO L93 Difference]: Finished difference Result 1255 states and 2084 transitions. [2022-07-13 17:13:12,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:13:12,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2022-07-13 17:13:12,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:12,349 INFO L225 Difference]: With dead ends: 1255 [2022-07-13 17:13:12,349 INFO L226 Difference]: Without dead ends: 627 [2022-07-13 17:13:12,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:13:12,360 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 26 mSDsluCounter, 2005 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:12,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3012 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:13:12,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-07-13 17:13:12,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 627. [2022-07-13 17:13:12,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 488 states have (on average 1.6557377049180328) internal successors, (808), 506 states have internal predecessors, (808), 110 states have call successors, (110), 30 states have call predecessors, (110), 28 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2022-07-13 17:13:12,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1025 transitions. [2022-07-13 17:13:12,423 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1025 transitions. Word has length 99 [2022-07-13 17:13:12,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:12,423 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 1025 transitions. [2022-07-13 17:13:12,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:13:12,424 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1025 transitions. [2022-07-13 17:13:12,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-13 17:13:12,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:12,428 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 17:13:12,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 17:13:12,662 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 [2022-07-13 17:13:12,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:12,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:12,663 INFO L85 PathProgramCache]: Analyzing trace with hash -56223332, now seen corresponding path program 1 times [2022-07-13 17:13:12,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:12,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310396506] [2022-07-13 17:13:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:12,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:12,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:12,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:13:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:12,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:13:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:12,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:12,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:13:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:12,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 17:13:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:12,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:13:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:12,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:13:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:12,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:13:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:12,860 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:13:12,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:12,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310396506] [2022-07-13 17:13:12,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310396506] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:12,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021084611] [2022-07-13 17:13:12,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:12,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:12,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:12,862 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) [2022-07-13 17:13:12,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 17:13:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:13,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 17:13:13,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 17:13:13,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:13,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021084611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:13,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:13,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-07-13 17:13:13,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125552512] [2022-07-13 17:13:13,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:13,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:13:13,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:13,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:13:13,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:13:13,123 INFO L87 Difference]: Start difference. First operand 627 states and 1025 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 17:13:13,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:13,217 INFO L93 Difference]: Finished difference Result 1268 states and 2077 transitions. [2022-07-13 17:13:13,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:13:13,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 85 [2022-07-13 17:13:13,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:13,221 INFO L225 Difference]: With dead ends: 1268 [2022-07-13 17:13:13,221 INFO L226 Difference]: Without dead ends: 651 [2022-07-13 17:13:13,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:13:13,224 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 119 mSDsluCounter, 4922 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5929 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:13,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5929 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:13:13,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-07-13 17:13:13,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 640. [2022-07-13 17:13:13,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 498 states have (on average 1.6526104417670682) internal successors, (823), 518 states have internal predecessors, (823), 111 states have call successors, (111), 30 states have call predecessors, (111), 30 states have return successors, (113), 105 states have call predecessors, (113), 108 states have call successors, (113) [2022-07-13 17:13:13,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1047 transitions. [2022-07-13 17:13:13,261 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1047 transitions. Word has length 85 [2022-07-13 17:13:13,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:13,261 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 1047 transitions. [2022-07-13 17:13:13,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 17:13:13,261 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1047 transitions. [2022-07-13 17:13:13,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 17:13:13,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:13,274 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] [2022-07-13 17:13:13,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:13,495 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 [2022-07-13 17:13:13,495 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:13,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:13,496 INFO L85 PathProgramCache]: Analyzing trace with hash -94231770, now seen corresponding path program 1 times [2022-07-13 17:13:13,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:13,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969785586] [2022-07-13 17:13:13,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:13,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:13,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:13,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:13:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:13,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:13:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:13,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:13,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:13:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:13,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 17:13:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:13,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:13,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:13:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:13,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:13:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:13,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:13:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:13,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:13:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 17:13:13,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:13,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969785586] [2022-07-13 17:13:13,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969785586] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:13,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424758277] [2022-07-13 17:13:13,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:13,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:13,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:13,824 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) [2022-07-13 17:13:13,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 17:13:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:14,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 17:13:14,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:14,134 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:13:14,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:14,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424758277] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:14,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:14,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-07-13 17:13:14,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386953468] [2022-07-13 17:13:14,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:14,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:13:14,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:14,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:13:14,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:13:14,137 INFO L87 Difference]: Start difference. First operand 640 states and 1047 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:13:14,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:14,242 INFO L93 Difference]: Finished difference Result 1288 states and 2110 transitions. [2022-07-13 17:13:14,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:13:14,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 102 [2022-07-13 17:13:14,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:14,249 INFO L225 Difference]: With dead ends: 1288 [2022-07-13 17:13:14,249 INFO L226 Difference]: Without dead ends: 660 [2022-07-13 17:13:14,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:13:14,253 INFO L413 NwaCegarLoop]: 1006 mSDtfsCounter, 130 mSDsluCounter, 4905 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 5911 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:14,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 5911 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:13:14,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-07-13 17:13:14,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 640. [2022-07-13 17:13:14,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 498 states have (on average 1.6526104417670682) internal successors, (823), 518 states have internal predecessors, (823), 111 states have call successors, (111), 30 states have call predecessors, (111), 30 states have return successors, (113), 105 states have call predecessors, (113), 108 states have call successors, (113) [2022-07-13 17:13:14,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1047 transitions. [2022-07-13 17:13:14,284 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1047 transitions. Word has length 102 [2022-07-13 17:13:14,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:14,286 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 1047 transitions. [2022-07-13 17:13:14,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:13:14,287 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1047 transitions. [2022-07-13 17:13:14,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 17:13:14,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:14,289 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] [2022-07-13 17:13:14,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:14,503 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 [2022-07-13 17:13:14,504 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:14,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:14,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1654658892, now seen corresponding path program 1 times [2022-07-13 17:13:14,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:14,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083794172] [2022-07-13 17:13:14,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:14,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:14,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:14,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:13:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:14,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:13:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:14,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:14,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:13:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 17:13:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:14,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:14,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:13:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:14,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:13:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:14,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:13:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:14,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:13:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:14,774 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:13:14,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:14,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083794172] [2022-07-13 17:13:14,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083794172] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:14,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321328405] [2022-07-13 17:13:14,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:14,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:14,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:14,776 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) [2022-07-13 17:13:14,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 17:13:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:14,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:13:14,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 17:13:15,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:15,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321328405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:15,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:15,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-13 17:13:15,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342164152] [2022-07-13 17:13:15,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:15,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:13:15,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:15,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:13:15,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:13:15,017 INFO L87 Difference]: Start difference. First operand 640 states and 1047 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:13:15,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:15,075 INFO L93 Difference]: Finished difference Result 1283 states and 2100 transitions. [2022-07-13 17:13:15,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:13:15,075 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2022-07-13 17:13:15,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:15,078 INFO L225 Difference]: With dead ends: 1283 [2022-07-13 17:13:15,078 INFO L226 Difference]: Without dead ends: 651 [2022-07-13 17:13:15,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:13:15,080 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 20 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:15,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2980 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:13:15,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-07-13 17:13:15,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 649. [2022-07-13 17:13:15,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 506 states have (on average 1.6442687747035574) internal successors, (832), 526 states have internal predecessors, (832), 111 states have call successors, (111), 31 states have call predecessors, (111), 31 states have return successors, (112), 105 states have call predecessors, (112), 108 states have call successors, (112) [2022-07-13 17:13:15,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1055 transitions. [2022-07-13 17:13:15,104 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1055 transitions. Word has length 102 [2022-07-13 17:13:15,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:15,104 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 1055 transitions. [2022-07-13 17:13:15,104 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:13:15,105 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1055 transitions. [2022-07-13 17:13:15,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-13 17:13:15,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:15,106 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] [2022-07-13 17:13:15,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:15,329 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 [2022-07-13 17:13:15,330 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:15,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:15,330 INFO L85 PathProgramCache]: Analyzing trace with hash 498695512, now seen corresponding path program 1 times [2022-07-13 17:13:15,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:15,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892745166] [2022-07-13 17:13:15,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:15,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:15,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:15,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:13:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:15,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 17:13:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:15,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:15,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:13:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:15,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 17:13:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:15,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:13:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:15,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:13:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:15,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 17:13:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:15,487 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 17:13:15,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:15,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892745166] [2022-07-13 17:13:15,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892745166] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:15,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199368956] [2022-07-13 17:13:15,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:15,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:15,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:15,502 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) [2022-07-13 17:13:15,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 17:13:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:15,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 17:13:15,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:15,773 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 17:13:15,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:15,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199368956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:15,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:15,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-13 17:13:15,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543178717] [2022-07-13 17:13:15,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:15,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:13:15,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:15,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:13:15,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:13:15,775 INFO L87 Difference]: Start difference. First operand 649 states and 1055 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 17:13:15,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:15,850 INFO L93 Difference]: Finished difference Result 1297 states and 2113 transitions. [2022-07-13 17:13:15,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:13:15,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2022-07-13 17:13:15,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:15,853 INFO L225 Difference]: With dead ends: 1297 [2022-07-13 17:13:15,853 INFO L226 Difference]: Without dead ends: 671 [2022-07-13 17:13:15,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:13:15,855 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 141 mSDsluCounter, 4874 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 5876 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:15,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 5876 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:13:15,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-07-13 17:13:15,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 649. [2022-07-13 17:13:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 506 states have (on average 1.6442687747035574) internal successors, (832), 526 states have internal predecessors, (832), 111 states have call successors, (111), 31 states have call predecessors, (111), 31 states have return successors, (112), 105 states have call predecessors, (112), 108 states have call successors, (112) [2022-07-13 17:13:15,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1055 transitions. [2022-07-13 17:13:15,870 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1055 transitions. Word has length 87 [2022-07-13 17:13:15,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:15,870 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 1055 transitions. [2022-07-13 17:13:15,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 17:13:15,870 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1055 transitions. [2022-07-13 17:13:15,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 17:13:15,882 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:15,882 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] [2022-07-13 17:13:15,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:16,095 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 [2022-07-13 17:13:16,096 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:16,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:16,096 INFO L85 PathProgramCache]: Analyzing trace with hash -954877534, now seen corresponding path program 1 times [2022-07-13 17:13:16,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:16,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825143709] [2022-07-13 17:13:16,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:16,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:16,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:16,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:13:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:16,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 17:13:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:16,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:16,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:13:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:16,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 17:13:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:16,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:16,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:13:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:16,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:13:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:16,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:13:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:16,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:13:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:16,352 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:13:16,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:16,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825143709] [2022-07-13 17:13:16,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825143709] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:16,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012603320] [2022-07-13 17:13:16,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:16,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:16,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:16,368 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) [2022-07-13 17:13:16,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 17:13:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:16,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:13:16,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:16,613 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:13:16,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:16,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012603320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:16,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:16,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-07-13 17:13:16,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618098583] [2022-07-13 17:13:16,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:16,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:13:16,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:16,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:13:16,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:13:16,614 INFO L87 Difference]: Start difference. First operand 649 states and 1055 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:13:16,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:16,748 INFO L93 Difference]: Finished difference Result 1329 states and 2181 transitions. [2022-07-13 17:13:16,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:13:16,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2022-07-13 17:13:16,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:16,751 INFO L225 Difference]: With dead ends: 1329 [2022-07-13 17:13:16,751 INFO L226 Difference]: Without dead ends: 703 [2022-07-13 17:13:16,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:13:16,754 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 167 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:16,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 2823 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:13:16,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2022-07-13 17:13:16,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 694. [2022-07-13 17:13:16,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.6654545454545455) internal successors, (916), 570 states have internal predecessors, (916), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2022-07-13 17:13:16,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1138 transitions. [2022-07-13 17:13:16,779 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1138 transitions. Word has length 104 [2022-07-13 17:13:16,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:16,779 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1138 transitions. [2022-07-13 17:13:16,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:13:16,780 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1138 transitions. [2022-07-13 17:13:16,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 17:13:16,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:16,781 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] [2022-07-13 17:13:16,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-13 17:13:16,995 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 [2022-07-13 17:13:16,996 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:16,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:16,996 INFO L85 PathProgramCache]: Analyzing trace with hash 274298455, now seen corresponding path program 1 times [2022-07-13 17:13:16,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:16,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013997890] [2022-07-13 17:13:16,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:16,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:17,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:17,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:13:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:17,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 17:13:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:17,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:17,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:13:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:17,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 17:13:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:17,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:17,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:13:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:17,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 17:13:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:17,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:13:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:13:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:17,222 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 17:13:17,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:17,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013997890] [2022-07-13 17:13:17,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013997890] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:17,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031410364] [2022-07-13 17:13:17,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:17,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:17,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:17,224 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) [2022-07-13 17:13:17,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 17:13:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:17,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 17:13:17,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:13:17,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:17,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031410364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:17,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:17,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-07-13 17:13:17,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130494053] [2022-07-13 17:13:17,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:17,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:13:17,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:17,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:13:17,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:13:17,502 INFO L87 Difference]: Start difference. First operand 694 states and 1138 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:13:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:17,627 INFO L93 Difference]: Finished difference Result 1399 states and 2296 transitions. [2022-07-13 17:13:17,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:13:17,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 105 [2022-07-13 17:13:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:17,631 INFO L225 Difference]: With dead ends: 1399 [2022-07-13 17:13:17,631 INFO L226 Difference]: Without dead ends: 728 [2022-07-13 17:13:17,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-13 17:13:17,634 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 140 mSDsluCounter, 5844 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 6836 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:17,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 6836 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:13:17,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-07-13 17:13:17,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 694. [2022-07-13 17:13:17,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.6654545454545455) internal successors, (916), 570 states have internal predecessors, (916), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2022-07-13 17:13:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1138 transitions. [2022-07-13 17:13:17,652 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1138 transitions. Word has length 105 [2022-07-13 17:13:17,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:17,652 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1138 transitions. [2022-07-13 17:13:17,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:13:17,652 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1138 transitions. [2022-07-13 17:13:17,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 17:13:17,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:17,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:13:17,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:17,875 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 [2022-07-13 17:13:17,876 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:17,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:17,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1901691604, now seen corresponding path program 1 times [2022-07-13 17:13:17,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:17,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316368110] [2022-07-13 17:13:17,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:17,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:17,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:17,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:13:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:17,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:13:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:17,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:17,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:13:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:13:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:13:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 17:13:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:13:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:13:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,074 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 17:13:18,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:18,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316368110] [2022-07-13 17:13:18,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316368110] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:18,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550587976] [2022-07-13 17:13:18,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:18,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:18,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:18,076 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) [2022-07-13 17:13:18,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 17:13:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 17:13:18,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:13:18,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:18,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550587976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:18,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:18,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-07-13 17:13:18,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086774296] [2022-07-13 17:13:18,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:18,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:13:18,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:18,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:13:18,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:13:18,370 INFO L87 Difference]: Start difference. First operand 694 states and 1138 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:13:18,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:18,488 INFO L93 Difference]: Finished difference Result 1399 states and 2296 transitions. [2022-07-13 17:13:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:13:18,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 106 [2022-07-13 17:13:18,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:18,492 INFO L225 Difference]: With dead ends: 1399 [2022-07-13 17:13:18,492 INFO L226 Difference]: Without dead ends: 728 [2022-07-13 17:13:18,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-13 17:13:18,494 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 150 mSDsluCounter, 5832 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 6824 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:18,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 6824 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:13:18,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-07-13 17:13:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 694. [2022-07-13 17:13:18,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.6654545454545455) internal successors, (916), 570 states have internal predecessors, (916), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2022-07-13 17:13:18,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1138 transitions. [2022-07-13 17:13:18,510 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1138 transitions. Word has length 106 [2022-07-13 17:13:18,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:18,510 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1138 transitions. [2022-07-13 17:13:18,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:13:18,510 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1138 transitions. [2022-07-13 17:13:18,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 17:13:18,512 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:18,512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:13:18,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:18,727 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 [2022-07-13 17:13:18,728 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:18,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:18,728 INFO L85 PathProgramCache]: Analyzing trace with hash 526750140, now seen corresponding path program 1 times [2022-07-13 17:13:18,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:18,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283263975] [2022-07-13 17:13:18,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:18,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:13:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:13:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:13:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 17:13:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:13:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:13:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:13:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:13:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 17:13:18,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:18,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283263975] [2022-07-13 17:13:18,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283263975] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:18,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31843368] [2022-07-13 17:13:18,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:18,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:18,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:18,964 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) [2022-07-13 17:13:18,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 17:13:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:19,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 17:13:19,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:13:19,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:19,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31843368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:19,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:19,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-07-13 17:13:19,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389794864] [2022-07-13 17:13:19,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:19,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:13:19,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:19,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:13:19,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:13:19,313 INFO L87 Difference]: Start difference. First operand 694 states and 1138 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:13:19,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:19,437 INFO L93 Difference]: Finished difference Result 1390 states and 2281 transitions. [2022-07-13 17:13:19,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:13:19,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 107 [2022-07-13 17:13:19,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:19,441 INFO L225 Difference]: With dead ends: 1390 [2022-07-13 17:13:19,441 INFO L226 Difference]: Without dead ends: 719 [2022-07-13 17:13:19,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-13 17:13:19,446 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 160 mSDsluCounter, 5820 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 6812 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:19,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 6812 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:13:19,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-07-13 17:13:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 694. [2022-07-13 17:13:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.6654545454545455) internal successors, (916), 570 states have internal predecessors, (916), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2022-07-13 17:13:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1138 transitions. [2022-07-13 17:13:19,466 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1138 transitions. Word has length 107 [2022-07-13 17:13:19,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:19,467 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1138 transitions. [2022-07-13 17:13:19,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:13:19,467 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1138 transitions. [2022-07-13 17:13:19,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 17:13:19,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:19,468 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] [2022-07-13 17:13:19,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:19,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:19,687 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:19,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:19,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1217546010, now seen corresponding path program 1 times [2022-07-13 17:13:19,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:19,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805466968] [2022-07-13 17:13:19,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:19,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:19,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:19,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:13:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:19,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:13:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:19,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:19,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:13:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:19,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 17:13:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:19,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:19,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:13:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:19,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:13:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:19,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:13:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:19,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:13:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 17:13:19,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:19,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805466968] [2022-07-13 17:13:19,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805466968] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:19,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367707066] [2022-07-13 17:13:19,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:19,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:19,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:19,908 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) [2022-07-13 17:13:19,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 17:13:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:20,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:13:20,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:20,163 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-13 17:13:20,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:20,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367707066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:20,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:20,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-13 17:13:20,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990790586] [2022-07-13 17:13:20,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:20,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:13:20,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:20,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:13:20,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:13:20,165 INFO L87 Difference]: Start difference. First operand 694 states and 1138 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:13:20,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:20,230 INFO L93 Difference]: Finished difference Result 1354 states and 2228 transitions. [2022-07-13 17:13:20,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:13:20,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 107 [2022-07-13 17:13:20,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:20,233 INFO L225 Difference]: With dead ends: 1354 [2022-07-13 17:13:20,233 INFO L226 Difference]: Without dead ends: 694 [2022-07-13 17:13:20,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:13:20,235 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 35 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2978 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 [2022-07-13 17:13:20,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2978 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:13:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-07-13 17:13:20,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 694. [2022-07-13 17:13:20,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.6563636363636363) internal successors, (911), 570 states have internal predecessors, (911), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2022-07-13 17:13:20,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1133 transitions. [2022-07-13 17:13:20,248 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1133 transitions. Word has length 107 [2022-07-13 17:13:20,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:20,249 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1133 transitions. [2022-07-13 17:13:20,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:13:20,249 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1133 transitions. [2022-07-13 17:13:20,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-13 17:13:20,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:20,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:13:20,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:20,465 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 [2022-07-13 17:13:20,465 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:20,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:20,465 INFO L85 PathProgramCache]: Analyzing trace with hash -20880589, now seen corresponding path program 1 times [2022-07-13 17:13:20,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:20,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774019139] [2022-07-13 17:13:20,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:20,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:20,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:20,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:13:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:20,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:13:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:20,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:20,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:13:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:20,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 17:13:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:20,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:20,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:13:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:20,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:13:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:20,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:13:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:20,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:13:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 17:13:20,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:20,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774019139] [2022-07-13 17:13:20,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774019139] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:20,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078935032] [2022-07-13 17:13:20,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:20,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:20,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:20,688 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) [2022-07-13 17:13:20,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 17:13:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:20,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 17:13:20,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-13 17:13:20,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:20,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078935032] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:20,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:20,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-13 17:13:20,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978523537] [2022-07-13 17:13:20,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:20,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:13:20,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:20,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:13:20,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:13:20,953 INFO L87 Difference]: Start difference. First operand 694 states and 1133 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:13:21,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:21,034 INFO L93 Difference]: Finished difference Result 1322 states and 2160 transitions. [2022-07-13 17:13:21,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:13:21,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 108 [2022-07-13 17:13:21,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:21,062 INFO L225 Difference]: With dead ends: 1322 [2022-07-13 17:13:21,062 INFO L226 Difference]: Without dead ends: 720 [2022-07-13 17:13:21,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:13:21,065 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 116 mSDsluCounter, 4888 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 5887 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:21,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 5887 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:13:21,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-07-13 17:13:21,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 707. [2022-07-13 17:13:21,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 560 states have (on average 1.6535714285714285) internal successors, (926), 582 states have internal predecessors, (926), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2022-07-13 17:13:21,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1154 transitions. [2022-07-13 17:13:21,082 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1154 transitions. Word has length 108 [2022-07-13 17:13:21,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:21,083 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 1154 transitions. [2022-07-13 17:13:21,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 17:13:21,083 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1154 transitions. [2022-07-13 17:13:21,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 17:13:21,084 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:21,085 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] [2022-07-13 17:13:21,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:21,303 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 [2022-07-13 17:13:21,303 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:21,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:21,303 INFO L85 PathProgramCache]: Analyzing trace with hash -707188911, now seen corresponding path program 1 times [2022-07-13 17:13:21,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:21,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556633756] [2022-07-13 17:13:21,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:21,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:21,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:21,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:13:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:21,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:13:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:21,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:21,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:13:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:21,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 17:13:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:21,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:13:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:21,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:13:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:21,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:13:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 17:13:21,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:21,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556633756] [2022-07-13 17:13:21,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556633756] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:21,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106480684] [2022-07-13 17:13:21,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:21,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:21,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:21,419 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) [2022-07-13 17:13:21,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 17:13:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:21,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 17:13:21,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:21,652 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 17:13:21,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:21,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106480684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:21,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:21,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-13 17:13:21,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746835357] [2022-07-13 17:13:21,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:21,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:13:21,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:21,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:13:21,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:13:21,653 INFO L87 Difference]: Start difference. First operand 707 states and 1154 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 17:13:21,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:21,717 INFO L93 Difference]: Finished difference Result 1331 states and 2175 transitions. [2022-07-13 17:13:21,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:13:21,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2022-07-13 17:13:21,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:21,721 INFO L225 Difference]: With dead ends: 1331 [2022-07-13 17:13:21,721 INFO L226 Difference]: Without dead ends: 729 [2022-07-13 17:13:21,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:13:21,724 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 127 mSDsluCounter, 4876 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 5875 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:21,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 5875 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:13:21,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-07-13 17:13:21,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 707. [2022-07-13 17:13:21,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 560 states have (on average 1.6535714285714285) internal successors, (926), 582 states have internal predecessors, (926), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2022-07-13 17:13:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1154 transitions. [2022-07-13 17:13:21,738 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1154 transitions. Word has length 93 [2022-07-13 17:13:21,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:21,739 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 1154 transitions. [2022-07-13 17:13:21,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 17:13:21,739 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1154 transitions. [2022-07-13 17:13:21,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 17:13:21,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:21,741 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] [2022-07-13 17:13:21,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:21,955 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 [2022-07-13 17:13:21,955 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:21,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:21,956 INFO L85 PathProgramCache]: Analyzing trace with hash 715482686, now seen corresponding path program 1 times [2022-07-13 17:13:21,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:21,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193941106] [2022-07-13 17:13:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:21,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:21,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:13:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:13:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 17:13:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:13:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:13:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:13:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 17:13:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 17:13:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 17:13:22,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:22,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193941106] [2022-07-13 17:13:22,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193941106] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:22,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780323293] [2022-07-13 17:13:22,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:22,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:22,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:22,221 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) [2022-07-13 17:13:22,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 17:13:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:13:22,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:22,473 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-13 17:13:22,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:22,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780323293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:22,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:22,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-13 17:13:22,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10603615] [2022-07-13 17:13:22,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:22,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:13:22,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:22,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:13:22,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:13:22,476 INFO L87 Difference]: Start difference. First operand 707 states and 1154 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:13:22,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:22,508 INFO L93 Difference]: Finished difference Result 1376 states and 2258 transitions. [2022-07-13 17:13:22,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 17:13:22,508 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 109 [2022-07-13 17:13:22,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:22,511 INFO L225 Difference]: With dead ends: 1376 [2022-07-13 17:13:22,512 INFO L226 Difference]: Without dead ends: 707 [2022-07-13 17:13:22,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:13:22,514 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 10 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2980 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 [2022-07-13 17:13:22,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2980 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:13:22,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-07-13 17:13:22,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2022-07-13 17:13:22,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 560 states have (on average 1.6482142857142856) internal successors, (923), 582 states have internal predecessors, (923), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2022-07-13 17:13:22,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1151 transitions. [2022-07-13 17:13:22,529 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1151 transitions. Word has length 109 [2022-07-13 17:13:22,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:22,529 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 1151 transitions. [2022-07-13 17:13:22,530 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 17:13:22,530 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1151 transitions. [2022-07-13 17:13:22,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-13 17:13:22,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:22,531 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] [2022-07-13 17:13:22,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:22,749 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 [2022-07-13 17:13:22,749 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:22,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:22,750 INFO L85 PathProgramCache]: Analyzing trace with hash -932828768, now seen corresponding path program 1 times [2022-07-13 17:13:22,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:22,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464087741] [2022-07-13 17:13:22,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:22,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:13:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:13:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:13:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 17:13:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:13:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:13:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:13:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 17:13:22,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:22,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464087741] [2022-07-13 17:13:22,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464087741] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:22,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440620579] [2022-07-13 17:13:22,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:22,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:22,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:22,888 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) [2022-07-13 17:13:22,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 17:13:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:23,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:13:23,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:23,098 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 17:13:23,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:23,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440620579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:23,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:23,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-13 17:13:23,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228064045] [2022-07-13 17:13:23,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:23,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:13:23,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:23,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:13:23,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:13:23,101 INFO L87 Difference]: Start difference. First operand 707 states and 1151 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 17:13:23,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:23,209 INFO L93 Difference]: Finished difference Result 1372 states and 2253 transitions. [2022-07-13 17:13:23,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:13:23,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2022-07-13 17:13:23,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:23,213 INFO L225 Difference]: With dead ends: 1372 [2022-07-13 17:13:23,213 INFO L226 Difference]: Without dead ends: 770 [2022-07-13 17:13:23,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:13:23,215 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 237 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:23,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 2803 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:13:23,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-07-13 17:13:23,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 752. [2022-07-13 17:13:23,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 604 states have (on average 1.6672185430463575) internal successors, (1007), 626 states have internal predecessors, (1007), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2022-07-13 17:13:23,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1232 transitions. [2022-07-13 17:13:23,231 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1232 transitions. Word has length 94 [2022-07-13 17:13:23,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:23,232 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 1232 transitions. [2022-07-13 17:13:23,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 17:13:23,232 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1232 transitions. [2022-07-13 17:13:23,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-13 17:13:23,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:23,233 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] [2022-07-13 17:13:23,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:23,451 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 [2022-07-13 17:13:23,451 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:23,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:23,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1159601758, now seen corresponding path program 1 times [2022-07-13 17:13:23,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:23,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754164970] [2022-07-13 17:13:23,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:23,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:23,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:23,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:13:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:23,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:13:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:23,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:23,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:13:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:23,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 17:13:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:23,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:13:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:23,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:13:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:23,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:13:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 17:13:23,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:23,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754164970] [2022-07-13 17:13:23,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754164970] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:23,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056984795] [2022-07-13 17:13:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:23,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:23,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:23,597 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) [2022-07-13 17:13:23,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 17:13:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:23,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 17:13:23,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 17:13:23,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:23,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056984795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:23,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:23,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2022-07-13 17:13:23,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416894829] [2022-07-13 17:13:23,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:23,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:13:23,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:23,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:13:23,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:13:23,861 INFO L87 Difference]: Start difference. First operand 752 states and 1232 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 17:13:23,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:23,978 INFO L93 Difference]: Finished difference Result 1388 states and 2269 transitions. [2022-07-13 17:13:23,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:13:23,979 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2022-07-13 17:13:23,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:23,983 INFO L225 Difference]: With dead ends: 1388 [2022-07-13 17:13:23,983 INFO L226 Difference]: Without dead ends: 786 [2022-07-13 17:13:23,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:13:23,986 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 138 mSDsluCounter, 5805 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 6789 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:23,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 6789 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:13:23,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-07-13 17:13:23,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 752. [2022-07-13 17:13:23,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 604 states have (on average 1.6672185430463575) internal successors, (1007), 626 states have internal predecessors, (1007), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2022-07-13 17:13:24,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1232 transitions. [2022-07-13 17:13:24,001 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1232 transitions. Word has length 94 [2022-07-13 17:13:24,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:24,002 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 1232 transitions. [2022-07-13 17:13:24,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 17:13:24,002 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1232 transitions. [2022-07-13 17:13:24,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 17:13:24,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:24,003 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] [2022-07-13 17:13:24,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:24,221 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 [2022-07-13 17:13:24,221 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:24,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:24,221 INFO L85 PathProgramCache]: Analyzing trace with hash -2057288235, now seen corresponding path program 1 times [2022-07-13 17:13:24,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:24,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194171237] [2022-07-13 17:13:24,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:24,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:24,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:24,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:13:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:24,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:13:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:24,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:13:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:24,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:13:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:24,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:13:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:24,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:13:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:24,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:13:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 17:13:24,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:24,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194171237] [2022-07-13 17:13:24,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194171237] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:24,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340917053] [2022-07-13 17:13:24,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:24,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:24,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:24,342 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) [2022-07-13 17:13:24,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 17:13:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:24,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 17:13:24,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 17:13:24,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:24,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340917053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:24,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:24,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2022-07-13 17:13:24,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327386650] [2022-07-13 17:13:24,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:24,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:13:24,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:24,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:13:24,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:13:24,589 INFO L87 Difference]: Start difference. First operand 752 states and 1232 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 17:13:24,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:24,718 INFO L93 Difference]: Finished difference Result 1379 states and 2255 transitions. [2022-07-13 17:13:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:13:24,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2022-07-13 17:13:24,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:24,722 INFO L225 Difference]: With dead ends: 1379 [2022-07-13 17:13:24,722 INFO L226 Difference]: Without dead ends: 777 [2022-07-13 17:13:24,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:13:24,724 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 148 mSDsluCounter, 5793 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 6777 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:24,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 6777 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:13:24,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2022-07-13 17:13:24,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 752. [2022-07-13 17:13:24,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 604 states have (on average 1.6672185430463575) internal successors, (1007), 626 states have internal predecessors, (1007), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2022-07-13 17:13:24,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1232 transitions. [2022-07-13 17:13:24,739 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1232 transitions. Word has length 95 [2022-07-13 17:13:24,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:24,739 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 1232 transitions. [2022-07-13 17:13:24,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 17:13:24,739 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1232 transitions. [2022-07-13 17:13:24,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-13 17:13:24,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:24,740 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] [2022-07-13 17:13:24,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:24,958 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 [2022-07-13 17:13:24,958 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:24,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:24,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1443964743, now seen corresponding path program 1 times [2022-07-13 17:13:24,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:24,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460294627] [2022-07-13 17:13:24,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:24,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:24,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:25,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:13:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:25,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:13:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:25,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:25,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:13:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:25,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 17:13:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:25,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:13:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 17:13:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:25,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:13:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 17:13:25,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:25,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460294627] [2022-07-13 17:13:25,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460294627] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:25,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246649506] [2022-07-13 17:13:25,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:25,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:25,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:25,076 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) [2022-07-13 17:13:25,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 17:13:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:25,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 17:13:25,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:25,506 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-13 17:13:25,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:25,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246649506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:25,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:25,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-07-13 17:13:25,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520414139] [2022-07-13 17:13:25,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:25,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:13:25,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:25,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:13:25,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:13:25,507 INFO L87 Difference]: Start difference. First operand 752 states and 1232 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 17:13:25,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:25,600 INFO L93 Difference]: Finished difference Result 1944 states and 3206 transitions. [2022-07-13 17:13:25,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:13:25,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 96 [2022-07-13 17:13:25,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:25,607 INFO L225 Difference]: With dead ends: 1944 [2022-07-13 17:13:25,607 INFO L226 Difference]: Without dead ends: 1346 [2022-07-13 17:13:25,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:13:25,609 INFO L413 NwaCegarLoop]: 1156 mSDtfsCounter, 933 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:25,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 2127 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:13:25,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2022-07-13 17:13:25,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1281. [2022-07-13 17:13:25,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1029 states have (on average 1.6695821185617103) internal successors, (1718), 1060 states have internal predecessors, (1718), 194 states have call successors, (194), 56 states have call predecessors, (194), 57 states have return successors, (201), 179 states have call predecessors, (201), 190 states have call successors, (201) [2022-07-13 17:13:25,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 2113 transitions. [2022-07-13 17:13:25,666 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 2113 transitions. Word has length 96 [2022-07-13 17:13:25,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:25,666 INFO L495 AbstractCegarLoop]: Abstraction has 1281 states and 2113 transitions. [2022-07-13 17:13:25,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 17:13:25,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 2113 transitions. [2022-07-13 17:13:25,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-13 17:13:25,671 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:25,671 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-07-13 17:13:25,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:25,889 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 [2022-07-13 17:13:25,889 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:25,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:25,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1050295996, now seen corresponding path program 1 times [2022-07-13 17:13:25,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:25,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702963700] [2022-07-13 17:13:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:25,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:25,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:13:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:13:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:13:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 17:13:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 17:13:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:13:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:13:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:13:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:13:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 17:13:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-13 17:13:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:13:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:13:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:13:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:13:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-13 17:13:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-13 17:13:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-13 17:13:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-07-13 17:13:26,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:26,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702963700] [2022-07-13 17:13:26,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702963700] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:26,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385351439] [2022-07-13 17:13:26,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:26,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:26,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:26,348 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) [2022-07-13 17:13:26,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-13 17:13:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:26,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 2251 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 17:13:26,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-13 17:13:26,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:26,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385351439] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:26,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:26,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-13 17:13:26,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582574035] [2022-07-13 17:13:26,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:26,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:13:26,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:26,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:13:26,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:13:26,752 INFO L87 Difference]: Start difference. First operand 1281 states and 2113 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-13 17:13:27,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:27,152 INFO L93 Difference]: Finished difference Result 2424 states and 4061 transitions. [2022-07-13 17:13:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:13:27,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 221 [2022-07-13 17:13:27,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:27,158 INFO L225 Difference]: With dead ends: 2424 [2022-07-13 17:13:27,158 INFO L226 Difference]: Without dead ends: 1297 [2022-07-13 17:13:27,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:13:27,164 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 950 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:27,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 2529 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 17:13:27,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2022-07-13 17:13:27,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1297. [2022-07-13 17:13:27,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 1043 states have (on average 1.670182166826462) internal successors, (1742), 1074 states have internal predecessors, (1742), 194 states have call successors, (194), 58 states have call predecessors, (194), 59 states have return successors, (203), 179 states have call predecessors, (203), 190 states have call successors, (203) [2022-07-13 17:13:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 2139 transitions. [2022-07-13 17:13:27,204 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 2139 transitions. Word has length 221 [2022-07-13 17:13:27,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:27,204 INFO L495 AbstractCegarLoop]: Abstraction has 1297 states and 2139 transitions. [2022-07-13 17:13:27,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-13 17:13:27,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 2139 transitions. [2022-07-13 17:13:27,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-13 17:13:27,208 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:27,208 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] [2022-07-13 17:13:27,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:27,427 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 [2022-07-13 17:13:27,427 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:27,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:27,427 INFO L85 PathProgramCache]: Analyzing trace with hash 795686906, now seen corresponding path program 1 times [2022-07-13 17:13:27,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:27,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706921988] [2022-07-13 17:13:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:27,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:13:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:13:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:13:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 17:13:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:13:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:13:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:13:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:13:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 17:13:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 17:13:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 17:13:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 17:13:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:13:27,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:27,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706921988] [2022-07-13 17:13:27,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706921988] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:27,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630595255] [2022-07-13 17:13:27,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:27,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:27,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:27,694 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) [2022-07-13 17:13:27,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-13 17:13:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:27,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 17:13:27,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:28,014 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-13 17:13:28,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:28,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630595255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:28,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:28,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-13 17:13:28,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774112277] [2022-07-13 17:13:28,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:28,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:13:28,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:28,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:13:28,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:13:28,015 INFO L87 Difference]: Start difference. First operand 1297 states and 2139 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:13:28,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:28,408 INFO L93 Difference]: Finished difference Result 2456 states and 4107 transitions. [2022-07-13 17:13:28,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:13:28,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2022-07-13 17:13:28,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:28,414 INFO L225 Difference]: With dead ends: 2456 [2022-07-13 17:13:28,414 INFO L226 Difference]: Without dead ends: 1313 [2022-07-13 17:13:28,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:13:28,418 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 941 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:28,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 2529 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 17:13:28,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2022-07-13 17:13:28,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1313. [2022-07-13 17:13:28,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1057 states have (on average 1.6707663197729423) internal successors, (1766), 1088 states have internal predecessors, (1766), 194 states have call successors, (194), 60 states have call predecessors, (194), 61 states have return successors, (205), 179 states have call predecessors, (205), 190 states have call successors, (205) [2022-07-13 17:13:28,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 2165 transitions. [2022-07-13 17:13:28,447 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 2165 transitions. Word has length 153 [2022-07-13 17:13:28,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:28,447 INFO L495 AbstractCegarLoop]: Abstraction has 1313 states and 2165 transitions. [2022-07-13 17:13:28,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:13:28,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 2165 transitions. [2022-07-13 17:13:28,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-13 17:13:28,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:28,451 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] [2022-07-13 17:13:28,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-07-13 17:13:28,669 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 [2022-07-13 17:13:28,669 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:28,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:28,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1942016924, now seen corresponding path program 1 times [2022-07-13 17:13:28,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:28,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464444430] [2022-07-13 17:13:28,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:28,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:13:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:13:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:13:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 17:13:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:13:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:13:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:13:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:13:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 17:13:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 17:13:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-13 17:13:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 17:13:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:28,924 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 17:13:28,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:28,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464444430] [2022-07-13 17:13:28,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464444430] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:28,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4717057] [2022-07-13 17:13:28,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:28,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:28,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:28,928 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) [2022-07-13 17:13:28,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-13 17:13:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 17:13:29,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 17:13:29,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:29,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4717057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:29,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:29,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-13 17:13:29,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421619261] [2022-07-13 17:13:29,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:29,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:13:29,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:29,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:13:29,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:13:29,240 INFO L87 Difference]: Start difference. First operand 1313 states and 2165 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:13:29,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:29,364 INFO L93 Difference]: Finished difference Result 3351 states and 5510 transitions. [2022-07-13 17:13:29,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:13:29,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2022-07-13 17:13:29,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:29,372 INFO L225 Difference]: With dead ends: 3351 [2022-07-13 17:13:29,372 INFO L226 Difference]: Without dead ends: 2192 [2022-07-13 17:13:29,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:13:29,377 INFO L413 NwaCegarLoop]: 1436 mSDtfsCounter, 1042 mSDsluCounter, 3457 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 4893 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:29,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 4893 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:13:29,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2022-07-13 17:13:29,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 2184. [2022-07-13 17:13:29,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2184 states, 1751 states have (on average 1.6442033123929183) internal successors, (2879), 1785 states have internal predecessors, (2879), 327 states have call successors, (327), 102 states have call predecessors, (327), 105 states have return successors, (367), 312 states have call predecessors, (367), 321 states have call successors, (367) [2022-07-13 17:13:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 3573 transitions. [2022-07-13 17:13:29,438 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 3573 transitions. Word has length 154 [2022-07-13 17:13:29,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:29,438 INFO L495 AbstractCegarLoop]: Abstraction has 2184 states and 3573 transitions. [2022-07-13 17:13:29,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:13:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 3573 transitions. [2022-07-13 17:13:29,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-13 17:13:29,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:29,444 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:13:29,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:29,659 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 [2022-07-13 17:13:29,659 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:29,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:29,660 INFO L85 PathProgramCache]: Analyzing trace with hash -345557712, now seen corresponding path program 1 times [2022-07-13 17:13:29,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:29,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994347645] [2022-07-13 17:13:29,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:29,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:13:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:13:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:13:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 17:13:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 17:13:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:13:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:13:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:13:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 17:13:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 17:13:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 17:13:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:13:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:29,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:13:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:30,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:30,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:30,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:13:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:30,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 17:13:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:30,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-13 17:13:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:30,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-13 17:13:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:30,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-13 17:13:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:30,008 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-13 17:13:30,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:30,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994347645] [2022-07-13 17:13:30,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994347645] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:30,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854607172] [2022-07-13 17:13:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:30,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:30,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:30,017 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) [2022-07-13 17:13:30,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-13 17:13:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:30,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 2253 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 17:13:30,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:30,427 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-13 17:13:30,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:30,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854607172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:30,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:30,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-13 17:13:30,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530927252] [2022-07-13 17:13:30,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:30,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:13:30,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:30,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:13:30,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:13:30,430 INFO L87 Difference]: Start difference. First operand 2184 states and 3573 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-13 17:13:30,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:30,798 INFO L93 Difference]: Finished difference Result 4246 states and 7058 transitions. [2022-07-13 17:13:30,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:13:30,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 230 [2022-07-13 17:13:30,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:30,809 INFO L225 Difference]: With dead ends: 4246 [2022-07-13 17:13:30,809 INFO L226 Difference]: Without dead ends: 2216 [2022-07-13 17:13:30,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:13:30,821 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 927 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:30,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 2529 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 17:13:30,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2022-07-13 17:13:30,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 2216. [2022-07-13 17:13:30,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 1779 states have (on average 1.6453063518830804) internal successors, (2927), 1813 states have internal predecessors, (2927), 327 states have call successors, (327), 106 states have call predecessors, (327), 109 states have return successors, (371), 312 states have call predecessors, (371), 321 states have call successors, (371) [2022-07-13 17:13:30,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3625 transitions. [2022-07-13 17:13:30,871 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3625 transitions. Word has length 230 [2022-07-13 17:13:30,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:30,871 INFO L495 AbstractCegarLoop]: Abstraction has 2216 states and 3625 transitions. [2022-07-13 17:13:30,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-13 17:13:30,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3625 transitions. [2022-07-13 17:13:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-13 17:13:30,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:30,876 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:13:30,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:31,094 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 [2022-07-13 17:13:31,094 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:31,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:31,095 INFO L85 PathProgramCache]: Analyzing trace with hash -269076624, now seen corresponding path program 1 times [2022-07-13 17:13:31,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:31,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989978650] [2022-07-13 17:13:31,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:31,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:13:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:13:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:13:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 17:13:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 17:13:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:13:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:13:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:13:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 17:13:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 17:13:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-13 17:13:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:13:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:13:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:13:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 17:13:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 17:13:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-13 17:13:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-13 17:13:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-13 17:13:31,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:31,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989978650] [2022-07-13 17:13:31,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989978650] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:31,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045571530] [2022-07-13 17:13:31,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:31,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:31,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:31,460 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) [2022-07-13 17:13:31,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-13 17:13:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:31,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 2257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 17:13:31,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:31,880 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-13 17:13:31,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:31,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045571530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:31,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:31,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-07-13 17:13:31,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439002441] [2022-07-13 17:13:31,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:31,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:13:31,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:31,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:13:31,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:13:31,881 INFO L87 Difference]: Start difference. First operand 2216 states and 3625 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-13 17:13:32,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:32,287 INFO L93 Difference]: Finished difference Result 4310 states and 7150 transitions. [2022-07-13 17:13:32,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:13:32,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 234 [2022-07-13 17:13:32,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:32,300 INFO L225 Difference]: With dead ends: 4310 [2022-07-13 17:13:32,300 INFO L226 Difference]: Without dead ends: 2248 [2022-07-13 17:13:32,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:13:32,308 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 935 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:32,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 2529 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 17:13:32,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2022-07-13 17:13:32,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 2248. [2022-07-13 17:13:32,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 1807 states have (on average 1.6463752075262867) internal successors, (2975), 1841 states have internal predecessors, (2975), 327 states have call successors, (327), 110 states have call predecessors, (327), 113 states have return successors, (375), 312 states have call predecessors, (375), 321 states have call successors, (375) [2022-07-13 17:13:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 3677 transitions. [2022-07-13 17:13:32,376 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 3677 transitions. Word has length 234 [2022-07-13 17:13:32,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:32,376 INFO L495 AbstractCegarLoop]: Abstraction has 2248 states and 3677 transitions. [2022-07-13 17:13:32,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-13 17:13:32,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 3677 transitions. [2022-07-13 17:13:32,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-13 17:13:32,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:32,381 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] [2022-07-13 17:13:32,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:32,595 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 [2022-07-13 17:13:32,595 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:32,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:32,596 INFO L85 PathProgramCache]: Analyzing trace with hash 242840774, now seen corresponding path program 1 times [2022-07-13 17:13:32,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:32,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337893841] [2022-07-13 17:13:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:32,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:13:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:13:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:13:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 17:13:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:13:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:13:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 17:13:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:13:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:13:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 17:13:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 17:13:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-13 17:13:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 17:13:32,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:32,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337893841] [2022-07-13 17:13:32,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337893841] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:32,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340801501] [2022-07-13 17:13:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:32,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:32,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:32,832 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) [2022-07-13 17:13:32,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-13 17:13:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 1644 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 17:13:33,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:33,082 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 17:13:33,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:33,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340801501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:33,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:33,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-13 17:13:33,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065246157] [2022-07-13 17:13:33,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:33,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:13:33,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:33,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:13:33,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:13:33,083 INFO L87 Difference]: Start difference. First operand 2248 states and 3677 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:13:33,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:33,142 INFO L93 Difference]: Finished difference Result 4473 states and 7334 transitions. [2022-07-13 17:13:33,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:13:33,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2022-07-13 17:13:33,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:33,152 INFO L225 Difference]: With dead ends: 4473 [2022-07-13 17:13:33,152 INFO L226 Difference]: Without dead ends: 2213 [2022-07-13 17:13:33,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:13:33,157 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 13 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:33,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2979 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:13:33,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2022-07-13 17:13:33,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 2213. [2022-07-13 17:13:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2213 states, 1775 states have (on average 1.6371830985915492) internal successors, (2906), 1807 states have internal predecessors, (2906), 326 states have call successors, (326), 110 states have call predecessors, (326), 111 states have return successors, (372), 311 states have call predecessors, (372), 320 states have call successors, (372) [2022-07-13 17:13:33,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 3604 transitions. [2022-07-13 17:13:33,203 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 3604 transitions. Word has length 159 [2022-07-13 17:13:33,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:33,203 INFO L495 AbstractCegarLoop]: Abstraction has 2213 states and 3604 transitions. [2022-07-13 17:13:33,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:13:33,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 3604 transitions. [2022-07-13 17:13:33,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 17:13:33,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:33,207 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, 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] [2022-07-13 17:13:33,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:33,425 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 [2022-07-13 17:13:33,425 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:33,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:33,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1766682595, now seen corresponding path program 1 times [2022-07-13 17:13:33,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:33,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840044299] [2022-07-13 17:13:33,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:33,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:13:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:13:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:13:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:13:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:13:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:13:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 17:13:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:13:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:13:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-13 17:13:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 17:13:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-13 17:13:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,688 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 17:13:33,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:33,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840044299] [2022-07-13 17:13:33,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840044299] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:33,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536161054] [2022-07-13 17:13:33,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:33,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:33,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:33,694 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) [2022-07-13 17:13:33,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-13 17:13:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:33,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 17:13:33,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-13 17:13:33,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:13:33,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536161054] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:33,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:13:33,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 12 [2022-07-13 17:13:33,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580435691] [2022-07-13 17:13:33,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:33,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:13:33,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:33,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:13:33,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:13:33,969 INFO L87 Difference]: Start difference. First operand 2213 states and 3604 transitions. Second operand has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 17:13:34,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:34,066 INFO L93 Difference]: Finished difference Result 4450 states and 7244 transitions. [2022-07-13 17:13:34,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:13:34,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 160 [2022-07-13 17:13:34,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:34,083 INFO L225 Difference]: With dead ends: 4450 [2022-07-13 17:13:34,083 INFO L226 Difference]: Without dead ends: 2254 [2022-07-13 17:13:34,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:13:34,090 INFO L413 NwaCegarLoop]: 1006 mSDtfsCounter, 138 mSDsluCounter, 4858 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5864 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:34,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5864 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:13:34,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2022-07-13 17:13:34,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2206. [2022-07-13 17:13:34,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2206 states, 1768 states have (on average 1.6346153846153846) internal successors, (2890), 1800 states have internal predecessors, (2890), 326 states have call successors, (326), 110 states have call predecessors, (326), 111 states have return successors, (372), 311 states have call predecessors, (372), 320 states have call successors, (372) [2022-07-13 17:13:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 3588 transitions. [2022-07-13 17:13:34,146 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 3588 transitions. Word has length 160 [2022-07-13 17:13:34,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:34,147 INFO L495 AbstractCegarLoop]: Abstraction has 2206 states and 3588 transitions. [2022-07-13 17:13:34,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 17:13:34,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 3588 transitions. [2022-07-13 17:13:34,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-13 17:13:34,151 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:34,151 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, 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] [2022-07-13 17:13:34,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-13 17:13:34,363 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 [2022-07-13 17:13:34,363 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:34,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:34,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1867859416, now seen corresponding path program 1 times [2022-07-13 17:13:34,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:34,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722132138] [2022-07-13 17:13:34,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:34,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:13:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:13:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:13:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:13:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:13:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:13:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 17:13:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:13:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:13:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 17:13:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-13 17:13:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 17:13:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:34,641 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:13:34,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:34,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722132138] [2022-07-13 17:13:34,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722132138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:34,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:13:34,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:13:34,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595547422] [2022-07-13 17:13:34,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:34,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:13:34,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:34,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:13:34,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:13:34,642 INFO L87 Difference]: Start difference. First operand 2206 states and 3588 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:13:38,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:38,986 INFO L93 Difference]: Finished difference Result 5140 states and 8421 transitions. [2022-07-13 17:13:38,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 17:13:38,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 161 [2022-07-13 17:13:38,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:38,997 INFO L225 Difference]: With dead ends: 5140 [2022-07-13 17:13:38,998 INFO L226 Difference]: Without dead ends: 3036 [2022-07-13 17:13:39,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:13:39,003 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 1179 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 2832 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 3143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 2832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:39,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 2223 Invalid, 3143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 2832 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-13 17:13:39,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2022-07-13 17:13:39,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 2255. [2022-07-13 17:13:39,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 1808 states have (on average 1.6305309734513274) internal successors, (2948), 1840 states have internal predecessors, (2948), 332 states have call successors, (332), 110 states have call predecessors, (332), 114 states have return successors, (384), 318 states have call predecessors, (384), 326 states have call successors, (384) [2022-07-13 17:13:39,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3664 transitions. [2022-07-13 17:13:39,221 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3664 transitions. Word has length 161 [2022-07-13 17:13:39,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:39,221 INFO L495 AbstractCegarLoop]: Abstraction has 2255 states and 3664 transitions. [2022-07-13 17:13:39,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:13:39,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3664 transitions. [2022-07-13 17:13:39,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-13 17:13:39,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:39,225 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, 1, 1] [2022-07-13 17:13:39,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 17:13:39,225 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:39,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:39,226 INFO L85 PathProgramCache]: Analyzing trace with hash 186936908, now seen corresponding path program 1 times [2022-07-13 17:13:39,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:39,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510158020] [2022-07-13 17:13:39,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:39,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:13:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:13:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:13:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:13:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:13:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:13:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 17:13:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:13:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:13:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 17:13:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-13 17:13:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 17:13:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 17:13:39,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:39,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510158020] [2022-07-13 17:13:39,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510158020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:13:39,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:13:39,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:13:39,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087950885] [2022-07-13 17:13:39,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:13:39,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:13:39,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:39,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:13:39,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:13:39,464 INFO L87 Difference]: Start difference. First operand 2255 states and 3664 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:13:43,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:13:43,238 INFO L93 Difference]: Finished difference Result 5178 states and 8480 transitions. [2022-07-13 17:13:43,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:13:43,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 161 [2022-07-13 17:13:43,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:13:43,248 INFO L225 Difference]: With dead ends: 5178 [2022-07-13 17:13:43,248 INFO L226 Difference]: Without dead ends: 2931 [2022-07-13 17:13:43,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:13:43,253 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 1633 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 2694 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 3184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 2694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:13:43,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 2194 Invalid, 3184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 2694 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-13 17:13:43,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2022-07-13 17:13:43,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 2227. [2022-07-13 17:13:43,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 1783 states have (on average 1.6275939427930455) internal successors, (2902), 1813 states have internal predecessors, (2902), 331 states have call successors, (331), 110 states have call predecessors, (331), 112 states have return successors, (381), 317 states have call predecessors, (381), 325 states have call successors, (381) [2022-07-13 17:13:43,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 3614 transitions. [2022-07-13 17:13:43,393 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 3614 transitions. Word has length 161 [2022-07-13 17:13:43,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:13:43,393 INFO L495 AbstractCegarLoop]: Abstraction has 2227 states and 3614 transitions. [2022-07-13 17:13:43,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:13:43,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 3614 transitions. [2022-07-13 17:13:43,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-13 17:13:43,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:13:43,397 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:13:43,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 17:13:43,397 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:13:43,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:13:43,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1818342087, now seen corresponding path program 1 times [2022-07-13 17:13:43,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:13:43,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908655017] [2022-07-13 17:13:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:43,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:13:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:43,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:13:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:43,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:13:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:43,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:13:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:43,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:43,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:13:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:43,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:13:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:43,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:43,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 17:13:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:43,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:43,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:43,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:13:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:43,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 17:13:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:43,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:44,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:44,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:13:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:44,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:13:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:44,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 17:13:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:44,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-13 17:13:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:44,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:44,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:44,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:13:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:44,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 17:13:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:44,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:44,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:13:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:44,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:13:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:44,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:13:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:44,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-13 17:13:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:44,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-13 17:13:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:44,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-07-13 17:13:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:44,111 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 12 proven. 70 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-13 17:13:44,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:13:44,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908655017] [2022-07-13 17:13:44,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908655017] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:13:44,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009383602] [2022-07-13 17:13:44,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:13:44,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:13:44,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:13:44,122 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) [2022-07-13 17:13:44,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-13 17:13:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:13:44,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 2269 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 17:13:44,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:13:44,547 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-13 17:13:44,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 17:13:44,885 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-13 17:13:44,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009383602] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 17:13:44,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 17:13:44,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 6, 6] total 29 [2022-07-13 17:13:44,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737868705] [2022-07-13 17:13:44,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 17:13:44,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-13 17:13:44,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:13:44,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-13 17:13:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2022-07-13 17:13:44,888 INFO L87 Difference]: Start difference. First operand 2227 states and 3614 transitions. Second operand has 29 states, 27 states have (on average 8.407407407407407) internal successors, (227), 23 states have internal predecessors, (227), 11 states have call successors, (52), 9 states have call predecessors, (52), 12 states have return successors, (50), 14 states have call predecessors, (50), 11 states have call successors, (50) [2022-07-13 17:15:22,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:15:22,693 INFO L93 Difference]: Finished difference Result 38375 states and 71098 transitions. [2022-07-13 17:15:22,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 329 states. [2022-07-13 17:15:22,693 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 8.407407407407407) internal successors, (227), 23 states have internal predecessors, (227), 11 states have call successors, (52), 9 states have call predecessors, (52), 12 states have return successors, (50), 14 states have call predecessors, (50), 11 states have call successors, (50) Word has length 241 [2022-07-13 17:15:22,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:15:22,973 INFO L225 Difference]: With dead ends: 38375 [2022-07-13 17:15:22,973 INFO L226 Difference]: Without dead ends: 35747 [2022-07-13 17:15:23,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1044 GetRequests, 686 SyntacticMatches, 5 SemanticMatches, 353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59660 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=16465, Invalid=109205, Unknown=0, NotChecked=0, Total=125670 [2022-07-13 17:15:23,033 INFO L413 NwaCegarLoop]: 2209 mSDtfsCounter, 40175 mSDsluCounter, 13393 mSDsCounter, 0 mSdLazyCounter, 80999 mSolverCounterSat, 28713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40186 SdHoareTripleChecker+Valid, 15602 SdHoareTripleChecker+Invalid, 109712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 28713 IncrementalHoareTripleChecker+Valid, 80999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:15:23,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40186 Valid, 15602 Invalid, 109712 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [28713 Valid, 80999 Invalid, 0 Unknown, 0 Unchecked, 63.3s Time] [2022-07-13 17:15:23,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35747 states. [2022-07-13 17:15:24,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35747 to 11243. [2022-07-13 17:15:24,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11243 states, 8859 states have (on average 1.5443052263235129) internal successors, (13681), 9040 states have internal predecessors, (13681), 1668 states have call successors, (1668), 657 states have call predecessors, (1668), 715 states have return successors, (2880), 1605 states have call predecessors, (2880), 1648 states have call successors, (2880) [2022-07-13 17:15:24,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11243 states to 11243 states and 18229 transitions. [2022-07-13 17:15:24,570 INFO L78 Accepts]: Start accepts. Automaton has 11243 states and 18229 transitions. Word has length 241 [2022-07-13 17:15:24,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:15:24,570 INFO L495 AbstractCegarLoop]: Abstraction has 11243 states and 18229 transitions. [2022-07-13 17:15:24,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 8.407407407407407) internal successors, (227), 23 states have internal predecessors, (227), 11 states have call successors, (52), 9 states have call predecessors, (52), 12 states have return successors, (50), 14 states have call predecessors, (50), 11 states have call successors, (50) [2022-07-13 17:15:24,571 INFO L276 IsEmpty]: Start isEmpty. Operand 11243 states and 18229 transitions. [2022-07-13 17:15:24,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 17:15:24,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:15:24,577 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, 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] [2022-07-13 17:15:24,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-07-13 17:15:24,795 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,SelfDestructingSolverStorable26 [2022-07-13 17:15:24,796 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:15:24,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:15:24,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1532460751, now seen corresponding path program 1 times [2022-07-13 17:15:24,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:15:24,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179797026] [2022-07-13 17:15:24,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:15:24,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:15:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:24,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:15:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:24,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:15:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:24,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:15:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:24,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:15:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:24,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:15:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:24,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:15:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:25,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:15:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:25,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:15:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:25,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:15:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:25,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:15:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:25,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 17:15:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:25,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:15:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:25,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:15:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:25,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:15:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:25,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:15:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:25,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 17:15:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:25,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 17:15:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-13 17:15:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:25,131 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-13 17:15:25,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:15:25,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179797026] [2022-07-13 17:15:25,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179797026] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:15:25,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310945777] [2022-07-13 17:15:25,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:15:25,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:15:25,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:15:25,133 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) [2022-07-13 17:15:25,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-13 17:15:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:25,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 17:15:25,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:15:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 17:15:25,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:15:25,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310945777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:15:25,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:15:25,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2022-07-13 17:15:25,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329333385] [2022-07-13 17:15:25,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:15:25,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:15:25,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:15:25,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:15:25,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-13 17:15:25,510 INFO L87 Difference]: Start difference. First operand 11243 states and 18229 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-07-13 17:15:28,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:15:28,042 INFO L93 Difference]: Finished difference Result 20778 states and 34158 transitions. [2022-07-13 17:15:28,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:15:28,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 162 [2022-07-13 17:15:28,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:15:28,119 INFO L225 Difference]: With dead ends: 20778 [2022-07-13 17:15:28,119 INFO L226 Difference]: Without dead ends: 10735 [2022-07-13 17:15:28,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-07-13 17:15:28,164 INFO L413 NwaCegarLoop]: 1327 mSDtfsCounter, 2763 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2885 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 2169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:15:28,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2885 Valid, 1865 Invalid, 2169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 17:15:28,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10735 states. [2022-07-13 17:15:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10735 to 10199. [2022-07-13 17:15:29,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10199 states, 7895 states have (on average 1.5566814439518684) internal successors, (12290), 8142 states have internal predecessors, (12290), 1719 states have call successors, (1719), 537 states have call predecessors, (1719), 584 states have return successors, (2664), 1627 states have call predecessors, (2664), 1699 states have call successors, (2664) [2022-07-13 17:15:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10199 states to 10199 states and 16673 transitions. [2022-07-13 17:15:29,309 INFO L78 Accepts]: Start accepts. Automaton has 10199 states and 16673 transitions. Word has length 162 [2022-07-13 17:15:29,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:15:29,309 INFO L495 AbstractCegarLoop]: Abstraction has 10199 states and 16673 transitions. [2022-07-13 17:15:29,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-07-13 17:15:29,310 INFO L276 IsEmpty]: Start isEmpty. Operand 10199 states and 16673 transitions. [2022-07-13 17:15:29,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 17:15:29,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:15:29,315 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, 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] [2022-07-13 17:15:29,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-13 17:15:29,528 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,SelfDestructingSolverStorable27 [2022-07-13 17:15:29,528 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:15:29,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:15:29,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2030539119, now seen corresponding path program 1 times [2022-07-13 17:15:29,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:15:29,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371647580] [2022-07-13 17:15:29,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:15:29,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:15:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:15:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:15:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:15:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:15:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:15:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:15:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:15:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:15:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:15:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:15:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 17:15:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:15:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:15:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:15:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:15:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 17:15:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 17:15:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-13 17:15:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-13 17:15:29,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:15:29,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371647580] [2022-07-13 17:15:29,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371647580] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:15:29,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520348158] [2022-07-13 17:15:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:15:29,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:15:29,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:15:29,845 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) [2022-07-13 17:15:29,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-13 17:15:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:30,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 17:15:30,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:15:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-13 17:15:30,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:15:30,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520348158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:15:30,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:15:30,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-07-13 17:15:30,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978553341] [2022-07-13 17:15:30,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:15:30,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:15:30,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:15:30,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:15:30,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-07-13 17:15:30,208 INFO L87 Difference]: Start difference. First operand 10199 states and 16673 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 17:15:35,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:15:35,018 INFO L93 Difference]: Finished difference Result 31643 states and 52668 transitions. [2022-07-13 17:15:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 17:15:35,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 162 [2022-07-13 17:15:35,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:15:35,121 INFO L225 Difference]: With dead ends: 31643 [2022-07-13 17:15:35,121 INFO L226 Difference]: Without dead ends: 22665 [2022-07-13 17:15:35,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-07-13 17:15:35,164 INFO L413 NwaCegarLoop]: 1765 mSDtfsCounter, 3036 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 4576 mSolverCounterSat, 741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3224 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 5317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 741 IncrementalHoareTripleChecker+Valid, 4576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:15:35,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3224 Valid, 2772 Invalid, 5317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [741 Valid, 4576 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 17:15:35,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22665 states. [2022-07-13 17:15:37,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22665 to 22265. [2022-07-13 17:15:37,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22265 states, 17089 states have (on average 1.543683070981333) internal successors, (26380), 17667 states have internal predecessors, (26380), 3893 states have call successors, (3893), 1145 states have call predecessors, (3893), 1282 states have return successors, (6326), 3704 states have call predecessors, (6326), 3867 states have call successors, (6326) [2022-07-13 17:15:37,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22265 states to 22265 states and 36599 transitions. [2022-07-13 17:15:37,730 INFO L78 Accepts]: Start accepts. Automaton has 22265 states and 36599 transitions. Word has length 162 [2022-07-13 17:15:37,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:15:37,731 INFO L495 AbstractCegarLoop]: Abstraction has 22265 states and 36599 transitions. [2022-07-13 17:15:37,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 17:15:37,731 INFO L276 IsEmpty]: Start isEmpty. Operand 22265 states and 36599 transitions. [2022-07-13 17:15:37,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 17:15:37,738 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:15:37,738 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, 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] [2022-07-13 17:15:37,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-07-13 17:15:37,956 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,SelfDestructingSolverStorable28 [2022-07-13 17:15:37,956 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:15:37,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:15:37,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1396351483, now seen corresponding path program 1 times [2022-07-13 17:15:37,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:15:37,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414364105] [2022-07-13 17:15:37,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:15:37,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:15:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:37,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:15:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:15:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:15:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:15:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:15:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:15:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:15:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:15:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:15:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:15:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 17:15:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:15:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:15:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:15:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:15:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:15:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 17:15:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 17:15:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-13 17:15:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:15:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-13 17:15:38,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:15:38,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414364105] [2022-07-13 17:15:38,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414364105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:15:38,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:15:38,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:15:38,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169751504] [2022-07-13 17:15:38,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:15:38,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:15:38,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:15:38,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:15:38,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:15:38,280 INFO L87 Difference]: Start difference. First operand 22265 states and 36599 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-13 17:16:01,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:16:01,851 INFO L93 Difference]: Finished difference Result 97035 states and 167567 transitions. [2022-07-13 17:16:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 17:16:01,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 167 [2022-07-13 17:16:01,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:16:02,294 INFO L225 Difference]: With dead ends: 97035 [2022-07-13 17:16:02,295 INFO L226 Difference]: Without dead ends: 76501 [2022-07-13 17:16:02,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2022-07-13 17:16:02,414 INFO L413 NwaCegarLoop]: 1836 mSDtfsCounter, 9086 mSDsluCounter, 1427 mSDsCounter, 0 mSdLazyCounter, 6455 mSolverCounterSat, 4975 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9159 SdHoareTripleChecker+Valid, 3263 SdHoareTripleChecker+Invalid, 11430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4975 IncrementalHoareTripleChecker+Valid, 6455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:16:02,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9159 Valid, 3263 Invalid, 11430 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4975 Valid, 6455 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-07-13 17:16:02,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76501 states. [2022-07-13 17:16:07,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76501 to 28707. [2022-07-13 17:16:07,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28707 states, 22110 states have (on average 1.5448213478064223) internal successors, (34156), 22791 states have internal predecessors, (34156), 4963 states have call successors, (4963), 1473 states have call predecessors, (4963), 1633 states have return successors, (8231), 4766 states have call predecessors, (8231), 4927 states have call successors, (8231) [2022-07-13 17:16:07,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28707 states to 28707 states and 47350 transitions. [2022-07-13 17:16:07,496 INFO L78 Accepts]: Start accepts. Automaton has 28707 states and 47350 transitions. Word has length 167 [2022-07-13 17:16:07,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:16:07,499 INFO L495 AbstractCegarLoop]: Abstraction has 28707 states and 47350 transitions. [2022-07-13 17:16:07,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-13 17:16:07,499 INFO L276 IsEmpty]: Start isEmpty. Operand 28707 states and 47350 transitions. [2022-07-13 17:16:07,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 17:16:07,505 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:16:07,505 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, 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] [2022-07-13 17:16:07,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 17:16:07,505 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:16:07,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:16:07,505 INFO L85 PathProgramCache]: Analyzing trace with hash -847631815, now seen corresponding path program 1 times [2022-07-13 17:16:07,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:16:07,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547513043] [2022-07-13 17:16:07,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:16:07,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:16:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:16:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:16:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:16:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:16:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:16:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:16:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:16:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 17:16:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:16:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:16:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:16:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 17:16:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 17:16:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-13 17:16:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-13 17:16:07,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:16:07,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547513043] [2022-07-13 17:16:07,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547513043] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:16:07,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106268155] [2022-07-13 17:16:07,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:16:07,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:16:07,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:16:07,848 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) [2022-07-13 17:16:07,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-13 17:16:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:08,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 17:16:08,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:16:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-13 17:16:08,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:16:08,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106268155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:16:08,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:16:08,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2022-07-13 17:16:08,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268899547] [2022-07-13 17:16:08,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:16:08,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:16:08,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:16:08,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:16:08,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-07-13 17:16:08,198 INFO L87 Difference]: Start difference. First operand 28707 states and 47350 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:16:12,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:16:12,212 INFO L93 Difference]: Finished difference Result 28910 states and 48139 transitions. [2022-07-13 17:16:12,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:16:12,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2022-07-13 17:16:12,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:16:12,339 INFO L225 Difference]: With dead ends: 28910 [2022-07-13 17:16:12,339 INFO L226 Difference]: Without dead ends: 28907 [2022-07-13 17:16:12,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-07-13 17:16:12,358 INFO L413 NwaCegarLoop]: 1883 mSDtfsCounter, 953 mSDsluCounter, 6417 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 8300 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:16:12,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 8300 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 17:16:12,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28907 states. [2022-07-13 17:16:16,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28907 to 28707. [2022-07-13 17:16:16,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28707 states, 22110 states have (on average 1.5436906377204884) internal successors, (34131), 22791 states have internal predecessors, (34131), 4963 states have call successors, (4963), 1473 states have call predecessors, (4963), 1633 states have return successors, (8231), 4766 states have call predecessors, (8231), 4927 states have call successors, (8231) [2022-07-13 17:16:16,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28707 states to 28707 states and 47325 transitions. [2022-07-13 17:16:16,607 INFO L78 Accepts]: Start accepts. Automaton has 28707 states and 47325 transitions. Word has length 167 [2022-07-13 17:16:16,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:16:16,608 INFO L495 AbstractCegarLoop]: Abstraction has 28707 states and 47325 transitions. [2022-07-13 17:16:16,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:16:16,608 INFO L276 IsEmpty]: Start isEmpty. Operand 28707 states and 47325 transitions. [2022-07-13 17:16:16,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 17:16:16,614 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:16:16,615 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, 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] [2022-07-13 17:16:16,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-07-13 17:16:16,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:16:16,834 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:16:16,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:16:16,835 INFO L85 PathProgramCache]: Analyzing trace with hash 552345981, now seen corresponding path program 1 times [2022-07-13 17:16:16,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:16:16,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446047790] [2022-07-13 17:16:16,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:16:16,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:16:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:16,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:16:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:16,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:16:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:16,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:16:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:16,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:16,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:16:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:16,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:16:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:17,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:16:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:17,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:17,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:17,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:16:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:17,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 17:16:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:17,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:17,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:17,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:16:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:17,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:16:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:17,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:16:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:17,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 17:16:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:17,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 17:16:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:17,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-13 17:16:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:17,198 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-13 17:16:17,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:16:17,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446047790] [2022-07-13 17:16:17,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446047790] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:16:17,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782957474] [2022-07-13 17:16:17,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:16:17,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:16:17,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:16:17,200 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) [2022-07-13 17:16:17,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-13 17:16:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:17,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 17:16:17,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:16:17,463 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 17:16:17,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:16:17,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782957474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:16:17,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:16:17,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-07-13 17:16:17,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051386514] [2022-07-13 17:16:17,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:16:17,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:16:17,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:16:17,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:16:17,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:16:17,464 INFO L87 Difference]: Start difference. First operand 28707 states and 47325 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:16:21,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:16:21,645 INFO L93 Difference]: Finished difference Result 57555 states and 96864 transitions. [2022-07-13 17:16:21,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:16:21,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2022-07-13 17:16:21,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:16:21,775 INFO L225 Difference]: With dead ends: 57555 [2022-07-13 17:16:21,775 INFO L226 Difference]: Without dead ends: 28995 [2022-07-13 17:16:21,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:16:21,931 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 86 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:16:21,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 2911 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:16:21,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28995 states. [2022-07-13 17:16:25,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28995 to 28995. [2022-07-13 17:16:25,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28995 states, 22350 states have (on average 1.54) internal successors, (34419), 23031 states have internal predecessors, (34419), 4963 states have call successors, (4963), 1521 states have call predecessors, (4963), 1681 states have return successors, (8231), 4766 states have call predecessors, (8231), 4927 states have call successors, (8231) [2022-07-13 17:16:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28995 states to 28995 states and 47613 transitions. [2022-07-13 17:16:25,962 INFO L78 Accepts]: Start accepts. Automaton has 28995 states and 47613 transitions. Word has length 167 [2022-07-13 17:16:25,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:16:25,963 INFO L495 AbstractCegarLoop]: Abstraction has 28995 states and 47613 transitions. [2022-07-13 17:16:25,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:16:25,963 INFO L276 IsEmpty]: Start isEmpty. Operand 28995 states and 47613 transitions. [2022-07-13 17:16:25,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-13 17:16:25,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:16:25,967 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, 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] [2022-07-13 17:16:25,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-07-13 17:16:26,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:16:26,185 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:16:26,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:16:26,186 INFO L85 PathProgramCache]: Analyzing trace with hash -750377434, now seen corresponding path program 1 times [2022-07-13 17:16:26,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:16:26,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341254001] [2022-07-13 17:16:26,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:16:26,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:16:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:16:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:16:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:16:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:16:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:16:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:16:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:16:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 17:16:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:16:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:16:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:16:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 17:16:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-13 17:16:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-13 17:16:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-13 17:16:26,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:16:26,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341254001] [2022-07-13 17:16:26,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341254001] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:16:26,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833304045] [2022-07-13 17:16:26,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:16:26,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:16:26,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:16:26,522 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) [2022-07-13 17:16:26,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-07-13 17:16:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:26,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 1676 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 17:16:26,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:16:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-13 17:16:26,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:16:26,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833304045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:16:26,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:16:26,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-07-13 17:16:26,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201135045] [2022-07-13 17:16:26,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:16:26,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:16:26,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:16:26,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:16:26,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-07-13 17:16:26,940 INFO L87 Difference]: Start difference. First operand 28995 states and 47613 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-07-13 17:16:35,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:16:35,711 INFO L93 Difference]: Finished difference Result 69858 states and 115586 transitions. [2022-07-13 17:16:35,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 17:16:35,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 169 [2022-07-13 17:16:35,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:16:35,897 INFO L225 Difference]: With dead ends: 69858 [2022-07-13 17:16:35,897 INFO L226 Difference]: Without dead ends: 43405 [2022-07-13 17:16:36,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-07-13 17:16:36,019 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 3247 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 5481 mSolverCounterSat, 1028 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3361 SdHoareTripleChecker+Valid, 3092 SdHoareTripleChecker+Invalid, 6509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1028 IncrementalHoareTripleChecker+Valid, 5481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:16:36,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3361 Valid, 3092 Invalid, 6509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1028 Valid, 5481 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 17:16:36,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43405 states. [2022-07-13 17:16:41,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43405 to 42544. [2022-07-13 17:16:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42544 states, 32696 states have (on average 1.5425740151700513) internal successors, (50436), 33707 states have internal predecessors, (50436), 7400 states have call successors, (7400), 2233 states have call predecessors, (7400), 2447 states have return successors, (12724), 7107 states have call predecessors, (12724), 7346 states have call successors, (12724) [2022-07-13 17:16:42,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42544 states to 42544 states and 70560 transitions. [2022-07-13 17:16:42,186 INFO L78 Accepts]: Start accepts. Automaton has 42544 states and 70560 transitions. Word has length 169 [2022-07-13 17:16:42,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:16:42,186 INFO L495 AbstractCegarLoop]: Abstraction has 42544 states and 70560 transitions. [2022-07-13 17:16:42,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-07-13 17:16:42,187 INFO L276 IsEmpty]: Start isEmpty. Operand 42544 states and 70560 transitions. [2022-07-13 17:16:42,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-13 17:16:42,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:16:42,192 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:16:42,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-07-13 17:16:42,410 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 [2022-07-13 17:16:42,410 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:16:42,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:16:42,410 INFO L85 PathProgramCache]: Analyzing trace with hash 903395973, now seen corresponding path program 1 times [2022-07-13 17:16:42,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:16:42,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123555872] [2022-07-13 17:16:42,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:16:42,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:16:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:16:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:16:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:16:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:16:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:16:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:16:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:16:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 17:16:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:16:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:16:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:16:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:16:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 17:16:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-13 17:16:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-13 17:16:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-13 17:16:42,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:16:42,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123555872] [2022-07-13 17:16:42,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123555872] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:16:42,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876642196] [2022-07-13 17:16:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:16:42,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:16:42,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:16:42,735 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) [2022-07-13 17:16:42,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-07-13 17:16:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:16:42,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 17:16:42,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:16:43,143 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-13 17:16:43,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:16:43,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876642196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:16:43,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:16:43,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2022-07-13 17:16:43,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143595097] [2022-07-13 17:16:43,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:16:43,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:16:43,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:16:43,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:16:43,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-07-13 17:16:43,145 INFO L87 Difference]: Start difference. First operand 42544 states and 70560 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-13 17:16:51,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:16:51,786 INFO L93 Difference]: Finished difference Result 97357 states and 165783 transitions. [2022-07-13 17:16:51,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:16:51,786 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 170 [2022-07-13 17:16:51,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:16:52,077 INFO L225 Difference]: With dead ends: 97357 [2022-07-13 17:16:52,078 INFO L226 Difference]: Without dead ends: 54945 [2022-07-13 17:16:52,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-07-13 17:16:52,330 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 1749 mSDsluCounter, 5016 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 6535 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:16:52,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1751 Valid, 6535 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 17:16:52,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54945 states. [2022-07-13 17:16:59,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54945 to 54848. [2022-07-13 17:16:59,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54848 states, 43159 states have (on average 1.5348594731110545) internal successors, (66243), 44267 states have internal predecessors, (66243), 8292 states have call successors, (8292), 3053 states have call predecessors, (8292), 3396 states have return successors, (20065), 8031 states have call predecessors, (20065), 8196 states have call successors, (20065) [2022-07-13 17:17:00,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54848 states to 54848 states and 94600 transitions. [2022-07-13 17:17:00,483 INFO L78 Accepts]: Start accepts. Automaton has 54848 states and 94600 transitions. Word has length 170 [2022-07-13 17:17:00,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:17:00,484 INFO L495 AbstractCegarLoop]: Abstraction has 54848 states and 94600 transitions. [2022-07-13 17:17:00,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-13 17:17:00,484 INFO L276 IsEmpty]: Start isEmpty. Operand 54848 states and 94600 transitions. [2022-07-13 17:17:00,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-13 17:17:00,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:17:00,488 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:17:00,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-07-13 17:17:00,703 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 [2022-07-13 17:17:00,703 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:17:00,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:17:00,704 INFO L85 PathProgramCache]: Analyzing trace with hash 90405515, now seen corresponding path program 1 times [2022-07-13 17:17:00,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:17:00,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876340369] [2022-07-13 17:17:00,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:17:00,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:17:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:00,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:17:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:00,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:17:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:00,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:17:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:00,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:17:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:00,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:17:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:00,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:17:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:00,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:17:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:00,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:17:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:01,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:17:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:01,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:17:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:01,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 17:17:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:01,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:17:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:01,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:17:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:01,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:17:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:01,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:17:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:01,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:17:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:01,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 17:17:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:01,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-13 17:17:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:01,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-13 17:17:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:01,035 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-13 17:17:01,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:17:01,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876340369] [2022-07-13 17:17:01,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876340369] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:17:01,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611133171] [2022-07-13 17:17:01,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:17:01,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:17:01,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:17:01,037 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) [2022-07-13 17:17:01,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-07-13 17:17:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:01,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1683 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 17:17:01,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:17:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 17:17:01,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:17:01,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611133171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:17:01,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:17:01,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-07-13 17:17:01,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622393720] [2022-07-13 17:17:01,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:17:01,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:17:01,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:17:01,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:17:01,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-07-13 17:17:01,438 INFO L87 Difference]: Start difference. First operand 54848 states and 94600 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-07-13 17:17:12,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:17:12,502 INFO L93 Difference]: Finished difference Result 103396 states and 176887 transitions. [2022-07-13 17:17:12,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 17:17:12,502 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 173 [2022-07-13 17:17:12,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:17:12,832 INFO L225 Difference]: With dead ends: 103396 [2022-07-13 17:17:12,832 INFO L226 Difference]: Without dead ends: 55836 [2022-07-13 17:17:13,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-07-13 17:17:13,313 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 3032 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 4843 mSolverCounterSat, 894 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3146 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 5737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 894 IncrementalHoareTripleChecker+Valid, 4843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:17:13,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3146 Valid, 2895 Invalid, 5737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [894 Valid, 4843 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 17:17:13,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55836 states. [2022-07-13 17:17:20,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55836 to 54836. [2022-07-13 17:17:20,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54836 states, 43147 states have (on average 1.5344519897095974) internal successors, (66207), 44255 states have internal predecessors, (66207), 8292 states have call successors, (8292), 3053 states have call predecessors, (8292), 3396 states have return successors, (20065), 8031 states have call predecessors, (20065), 8196 states have call successors, (20065) [2022-07-13 17:17:21,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54836 states to 54836 states and 94564 transitions. [2022-07-13 17:17:21,160 INFO L78 Accepts]: Start accepts. Automaton has 54836 states and 94564 transitions. Word has length 173 [2022-07-13 17:17:21,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:17:21,160 INFO L495 AbstractCegarLoop]: Abstraction has 54836 states and 94564 transitions. [2022-07-13 17:17:21,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-07-13 17:17:21,161 INFO L276 IsEmpty]: Start isEmpty. Operand 54836 states and 94564 transitions. [2022-07-13 17:17:21,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-13 17:17:21,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:17:21,165 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, 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] [2022-07-13 17:17:21,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-07-13 17:17:21,373 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 [2022-07-13 17:17:21,374 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:17:21,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:17:21,374 INFO L85 PathProgramCache]: Analyzing trace with hash 28756065, now seen corresponding path program 1 times [2022-07-13 17:17:21,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:17:21,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251684403] [2022-07-13 17:17:21,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:17:21,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:17:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:17:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:17:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:17:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:17:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:17:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:17:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:17:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:17:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:17:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:17:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 17:17:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:17:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:17:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 17:17:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:17:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:17:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 17:17:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 17:17:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-13 17:17:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-13 17:17:21,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:17:21,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251684403] [2022-07-13 17:17:21,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251684403] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:17:21,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147227279] [2022-07-13 17:17:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:17:21,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:17:21,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:17:21,705 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) [2022-07-13 17:17:21,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-07-13 17:17:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:17:21,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 1685 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 17:17:21,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:17:21,911 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 17:17:21,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:17:21,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147227279] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:17:21,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:17:21,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-07-13 17:17:21,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020567848] [2022-07-13 17:17:21,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:17:21,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:17:21,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:17:21,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:17:21,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:17:21,913 INFO L87 Difference]: Start difference. First operand 54836 states and 94564 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 17:17:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:17:30,418 INFO L93 Difference]: Finished difference Result 109922 states and 198870 transitions. [2022-07-13 17:17:30,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:17:30,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 175 [2022-07-13 17:17:30,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:17:30,688 INFO L225 Difference]: With dead ends: 109922 [2022-07-13 17:17:30,688 INFO L226 Difference]: Without dead ends: 54702 [2022-07-13 17:17:31,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:17:31,154 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 93 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 2905 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:17:31,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 2905 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:17:31,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54702 states.