./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec1_product11.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 5477c3156be335e627e6d8ad4c695e912cf982226281f4316d6a1123dc83cedb --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 16:45:02,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 16:45:02,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 16:45:02,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 16:45:02,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 16:45:02,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 16:45:02,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 16:45:02,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 16:45:02,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 16:45:02,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 16:45:02,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 16:45:02,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 16:45:02,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 16:45:02,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 16:45:02,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 16:45:02,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 16:45:02,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 16:45:02,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 16:45:02,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 16:45:02,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 16:45:02,387 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 16:45:02,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 16:45:02,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 16:45:02,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 16:45:02,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 16:45:02,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 16:45:02,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 16:45:02,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 16:45:02,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 16:45:02,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 16:45:02,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 16:45:02,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 16:45:02,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 16:45:02,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 16:45:02,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 16:45:02,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 16:45:02,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 16:45:02,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 16:45:02,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 16:45:02,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 16:45:02,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 16:45:02,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 16:45:02,415 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 16:45:02,443 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 16:45:02,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 16:45:02,444 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 16:45:02,444 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 16:45:02,445 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 16:45:02,445 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 16:45:02,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 16:45:02,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 16:45:02,446 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 16:45:02,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 16:45:02,447 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 16:45:02,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 16:45:02,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 16:45:02,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 16:45:02,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 16:45:02,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 16:45:02,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 16:45:02,448 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 16:45:02,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 16:45:02,449 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 16:45:02,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 16:45:02,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 16:45:02,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 16:45:02,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 16:45:02,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:45:02,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 16:45:02,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 16:45:02,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 16:45:02,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 16:45:02,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 16:45:02,451 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 16:45:02,452 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 16:45:02,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 16:45:02,452 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5477c3156be335e627e6d8ad4c695e912cf982226281f4316d6a1123dc83cedb [2022-07-19 16:45:02,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 16:45:02,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 16:45:02,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 16:45:02,679 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 16:45:02,680 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 16:45:02,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2022-07-19 16:45:02,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98f1ef89c/3dc799e73b134ae7854f0d5d2f2adcd0/FLAG74ebab8f8 [2022-07-19 16:45:03,219 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 16:45:03,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2022-07-19 16:45:03,244 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98f1ef89c/3dc799e73b134ae7854f0d5d2f2adcd0/FLAG74ebab8f8 [2022-07-19 16:45:03,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98f1ef89c/3dc799e73b134ae7854f0d5d2f2adcd0 [2022-07-19 16:45:03,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 16:45:03,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 16:45:03,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 16:45:03,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 16:45:03,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 16:45:03,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:45:03" (1/1) ... [2022-07-19 16:45:03,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5570fccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:45:03, skipping insertion in model container [2022-07-19 16:45:03,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:45:03" (1/1) ... [2022-07-19 16:45:03,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 16:45:03,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 16:45:03,914 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c[40826,40839] [2022-07-19 16:45:04,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:45:04,013 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 16:45:04,063 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c[40826,40839] [2022-07-19 16:45:04,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:45:04,139 INFO L208 MainTranslator]: Completed translation [2022-07-19 16:45:04,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:45:04 WrapperNode [2022-07-19 16:45:04,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 16:45:04,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 16:45:04,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 16:45:04,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 16:45:04,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:45:04" (1/1) ... [2022-07-19 16:45:04,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:45:04" (1/1) ... [2022-07-19 16:45:04,248 INFO L137 Inliner]: procedures = 93, calls = 339, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1118 [2022-07-19 16:45:04,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 16:45:04,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 16:45:04,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 16:45:04,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 16:45:04,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:45:04" (1/1) ... [2022-07-19 16:45:04,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:45:04" (1/1) ... [2022-07-19 16:45:04,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:45:04" (1/1) ... [2022-07-19 16:45:04,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:45:04" (1/1) ... [2022-07-19 16:45:04,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:45:04" (1/1) ... [2022-07-19 16:45:04,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:45:04" (1/1) ... [2022-07-19 16:45:04,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:45:04" (1/1) ... [2022-07-19 16:45:04,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 16:45:04,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 16:45:04,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 16:45:04,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 16:45:04,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:45:04" (1/1) ... [2022-07-19 16:45:04,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:45:04,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:04,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 16:45:04,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 16:45:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-07-19 16:45:04,441 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-07-19 16:45:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 16:45:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-19 16:45:04,442 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-19 16:45:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-19 16:45:04,442 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-19 16:45:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-19 16:45:04,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-19 16:45:04,443 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-19 16:45:04,443 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-19 16:45:04,443 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-19 16:45:04,443 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-19 16:45:04,443 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-19 16:45:04,443 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-19 16:45:04,444 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-19 16:45:04,444 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-19 16:45:04,444 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-19 16:45:04,444 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-19 16:45:04,444 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-19 16:45:04,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-19 16:45:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-19 16:45:04,445 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-19 16:45:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-19 16:45:04,445 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-19 16:45:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-19 16:45:04,445 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-19 16:45:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-19 16:45:04,446 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-19 16:45:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-19 16:45:04,446 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-19 16:45:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-07-19 16:45:04,446 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-07-19 16:45:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-19 16:45:04,447 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-19 16:45:04,447 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-19 16:45:04,447 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-19 16:45:04,447 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-19 16:45:04,447 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-19 16:45:04,447 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-19 16:45:04,448 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-19 16:45:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 16:45:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-19 16:45:04,448 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-19 16:45:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-19 16:45:04,448 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-19 16:45:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-19 16:45:04,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-19 16:45:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 16:45:04,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 16:45:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-19 16:45:04,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-19 16:45:04,630 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 16:45:04,632 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 16:45:05,466 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 16:45:05,481 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 16:45:05,481 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 16:45:05,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:45:05 BoogieIcfgContainer [2022-07-19 16:45:05,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 16:45:05,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 16:45:05,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 16:45:05,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 16:45:05,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 04:45:03" (1/3) ... [2022-07-19 16:45:05,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30562dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:45:05, skipping insertion in model container [2022-07-19 16:45:05,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:45:04" (2/3) ... [2022-07-19 16:45:05,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30562dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:45:05, skipping insertion in model container [2022-07-19 16:45:05,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:45:05" (3/3) ... [2022-07-19 16:45:05,490 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product11.cil.c [2022-07-19 16:45:05,504 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 16:45:05,505 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 16:45:05,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 16:45:05,592 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@14d9f674, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@41e511d3 [2022-07-19 16:45:05,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 16:45:05,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 561 states, 438 states have (on average 1.6917808219178083) internal successors, (741), 459 states have internal predecessors, (741), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-19 16:45:05,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-19 16:45:05,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:05,629 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:05,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:05,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:05,634 INFO L85 PathProgramCache]: Analyzing trace with hash 962722650, now seen corresponding path program 1 times [2022-07-19 16:45:05,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:05,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86530174] [2022-07-19 16:45:05,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:05,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:06,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:06,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:06,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:45:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:06,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:45:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:06,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:45:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:06,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 16:45:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:06,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:06,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:06,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:06,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:06,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:06,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:06,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:06,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:06,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:06,573 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 16:45:06,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:06,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86530174] [2022-07-19 16:45:06,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86530174] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:06,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215958905] [2022-07-19 16:45:06,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:06,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:06,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:06,587 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:45:06,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 16:45:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:06,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 16:45:06,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 16:45:07,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:07,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215958905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:07,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:07,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2022-07-19 16:45:07,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385375058] [2022-07-19 16:45:07,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:07,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 16:45:07,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:07,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 16:45:07,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:45:07,068 INFO L87 Difference]: Start difference. First operand has 561 states, 438 states have (on average 1.6917808219178083) internal successors, (741), 459 states have internal predecessors, (741), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 16:45:07,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:07,137 INFO L93 Difference]: Finished difference Result 582 states and 965 transitions. [2022-07-19 16:45:07,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 16:45:07,144 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 125 [2022-07-19 16:45:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:07,169 INFO L225 Difference]: With dead ends: 582 [2022-07-19 16:45:07,170 INFO L226 Difference]: Without dead ends: 553 [2022-07-19 16:45:07,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:45:07,176 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:07,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:45:07,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-07-19 16:45:07,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2022-07-19 16:45:07,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 432 states have (on average 1.6898148148148149) internal successors, (730), 451 states have internal predecessors, (730), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-07-19 16:45:07,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 919 transitions. [2022-07-19 16:45:07,271 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 919 transitions. Word has length 125 [2022-07-19 16:45:07,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:07,273 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 919 transitions. [2022-07-19 16:45:07,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 16:45:07,274 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 919 transitions. [2022-07-19 16:45:07,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 16:45:07,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:07,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:07,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 16:45:07,499 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 [2022-07-19 16:45:07,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:07,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:07,500 INFO L85 PathProgramCache]: Analyzing trace with hash 612259598, now seen corresponding path program 1 times [2022-07-19 16:45:07,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:07,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925678880] [2022-07-19 16:45:07,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:07,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:07,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:07,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:07,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:45:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:07,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:45:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:07,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:07,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:45:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:07,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 16:45:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:07,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:08,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:08,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:08,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:08,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:08,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:08,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:08,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 16:45:08,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:08,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925678880] [2022-07-19 16:45:08,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925678880] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:08,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700285254] [2022-07-19 16:45:08,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:08,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:08,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:08,033 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:45:08,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 16:45:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:08,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:45:08,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 16:45:08,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:08,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700285254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:08,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:08,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-19 16:45:08,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869794212] [2022-07-19 16:45:08,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:08,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:45:08,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:08,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:45:08,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:45:08,442 INFO L87 Difference]: Start difference. First operand 553 states and 919 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:08,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:08,565 INFO L93 Difference]: Finished difference Result 1097 states and 1830 transitions. [2022-07-19 16:45:08,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 16:45:08,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2022-07-19 16:45:08,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:08,575 INFO L225 Difference]: With dead ends: 1097 [2022-07-19 16:45:08,575 INFO L226 Difference]: Without dead ends: 553 [2022-07-19 16:45:08,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:08,584 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 14 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:08,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2708 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:45:08,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-07-19 16:45:08,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2022-07-19 16:45:08,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 432 states have (on average 1.6875) internal successors, (729), 451 states have internal predecessors, (729), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-07-19 16:45:08,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 918 transitions. [2022-07-19 16:45:08,646 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 918 transitions. Word has length 127 [2022-07-19 16:45:08,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:08,647 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 918 transitions. [2022-07-19 16:45:08,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:08,648 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 918 transitions. [2022-07-19 16:45:08,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-19 16:45:08,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:08,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:08,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 16:45:08,883 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 [2022-07-19 16:45:08,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:08,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:08,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1908031680, now seen corresponding path program 1 times [2022-07-19 16:45:08,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:08,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667617019] [2022-07-19 16:45:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:08,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:09,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:09,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:09,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:09,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 16:45:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:09,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:09,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:09,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 16:45:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:09,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:09,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:09,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:09,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:09,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:09,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:09,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:09,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:09,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 16:45:09,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:09,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667617019] [2022-07-19 16:45:09,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667617019] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:09,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176389873] [2022-07-19 16:45:09,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:09,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:09,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:09,402 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:45:09,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 16:45:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:09,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:45:09,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 16:45:09,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:09,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176389873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:09,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:09,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-19 16:45:09,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608447743] [2022-07-19 16:45:09,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:09,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:45:09,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:09,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:45:09,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:45:09,749 INFO L87 Difference]: Start difference. First operand 553 states and 918 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:09,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:09,815 INFO L93 Difference]: Finished difference Result 1097 states and 1828 transitions. [2022-07-19 16:45:09,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 16:45:09,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 129 [2022-07-19 16:45:09,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:09,821 INFO L225 Difference]: With dead ends: 1097 [2022-07-19 16:45:09,821 INFO L226 Difference]: Without dead ends: 553 [2022-07-19 16:45:09,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:09,826 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 12 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:09,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2708 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:45:09,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-07-19 16:45:09,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2022-07-19 16:45:09,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 432 states have (on average 1.6851851851851851) internal successors, (728), 451 states have internal predecessors, (728), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-07-19 16:45:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 917 transitions. [2022-07-19 16:45:09,859 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 917 transitions. Word has length 129 [2022-07-19 16:45:09,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:09,859 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 917 transitions. [2022-07-19 16:45:09,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:09,859 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 917 transitions. [2022-07-19 16:45:09,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 16:45:09,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:09,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:09,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:10,083 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 [2022-07-19 16:45:10,084 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:10,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:10,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1032252274, now seen corresponding path program 1 times [2022-07-19 16:45:10,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:10,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591586890] [2022-07-19 16:45:10,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:10,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:10,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:10,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:10,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:10,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:45:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:10,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:10,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:10,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 16:45:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:10,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:10,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:10,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:10,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:10,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:10,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:10,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:10,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:10,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 16:45:10,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:10,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591586890] [2022-07-19 16:45:10,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591586890] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:10,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606756217] [2022-07-19 16:45:10,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:10,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:10,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:10,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:45:10,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 16:45:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:10,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:45:10,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:10,848 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 16:45:10,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:10,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606756217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:10,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:10,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-19 16:45:10,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112955576] [2022-07-19 16:45:10,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:10,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:45:10,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:10,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:45:10,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:45:10,851 INFO L87 Difference]: Start difference. First operand 553 states and 917 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:10,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:10,911 INFO L93 Difference]: Finished difference Result 1104 states and 1835 transitions. [2022-07-19 16:45:10,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:45:10,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2022-07-19 16:45:10,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:10,916 INFO L225 Difference]: With dead ends: 1104 [2022-07-19 16:45:10,917 INFO L226 Difference]: Without dead ends: 562 [2022-07-19 16:45:10,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:10,921 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 20 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:10,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2708 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:45:10,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-07-19 16:45:10,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2022-07-19 16:45:10,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 440 states have (on average 1.6818181818181819) internal successors, (740), 459 states have internal predecessors, (740), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-07-19 16:45:10,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 929 transitions. [2022-07-19 16:45:10,942 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 929 transitions. Word has length 131 [2022-07-19 16:45:10,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:10,942 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 929 transitions. [2022-07-19 16:45:10,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:10,943 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 929 transitions. [2022-07-19 16:45:10,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-19 16:45:10,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:10,947 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:10,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:11,167 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 [2022-07-19 16:45:11,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:11,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:11,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1063424087, now seen corresponding path program 1 times [2022-07-19 16:45:11,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:11,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62352960] [2022-07-19 16:45:11,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:11,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:11,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:11,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:11,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 16:45:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:11,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 16:45:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:11,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:11,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:11,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 16:45:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:11,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:11,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:11,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:11,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:11,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:11,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:11,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:11,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:11,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 16:45:11,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:11,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62352960] [2022-07-19 16:45:11,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62352960] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:11,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923638509] [2022-07-19 16:45:11,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:11,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:11,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:11,571 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:45:11,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 16:45:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:11,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:45:11,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:11,927 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 16:45:11,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:11,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923638509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:11,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:11,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-19 16:45:11,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684162844] [2022-07-19 16:45:11,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:11,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:45:11,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:11,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:45:11,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:45:11,930 INFO L87 Difference]: Start difference. First operand 562 states and 929 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:11,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:11,988 INFO L93 Difference]: Finished difference Result 1106 states and 1836 transitions. [2022-07-19 16:45:11,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:45:11,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2022-07-19 16:45:11,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:11,993 INFO L225 Difference]: With dead ends: 1106 [2022-07-19 16:45:11,993 INFO L226 Difference]: Without dead ends: 562 [2022-07-19 16:45:11,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:11,996 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 18 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:11,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2708 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:45:12,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-07-19 16:45:12,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2022-07-19 16:45:12,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 440 states have (on average 1.6795454545454545) internal successors, (739), 459 states have internal predecessors, (739), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-07-19 16:45:12,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 928 transitions. [2022-07-19 16:45:12,018 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 928 transitions. Word has length 132 [2022-07-19 16:45:12,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:12,019 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 928 transitions. [2022-07-19 16:45:12,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:12,020 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 928 transitions. [2022-07-19 16:45:12,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-19 16:45:12,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:12,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:12,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:12,251 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 [2022-07-19 16:45:12,252 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:12,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:12,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1178788366, now seen corresponding path program 1 times [2022-07-19 16:45:12,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:12,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520515136] [2022-07-19 16:45:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:12,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:12,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:12,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:12,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 16:45:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:12,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 16:45:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:12,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:12,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:12,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 16:45:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:12,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:12,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:12,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:12,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:12,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:12,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:12,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:12,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:12,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 16:45:12,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:12,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520515136] [2022-07-19 16:45:12,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520515136] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:12,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122810226] [2022-07-19 16:45:12,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:12,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:12,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:12,613 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) [2022-07-19 16:45:12,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 16:45:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:12,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:45:12,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 16:45:12,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:12,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122810226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:12,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:12,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-19 16:45:12,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195477673] [2022-07-19 16:45:12,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:12,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:45:12,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:12,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:45:12,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:45:12,977 INFO L87 Difference]: Start difference. First operand 562 states and 928 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:13,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:13,032 INFO L93 Difference]: Finished difference Result 1106 states and 1835 transitions. [2022-07-19 16:45:13,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:45:13,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2022-07-19 16:45:13,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:13,037 INFO L225 Difference]: With dead ends: 1106 [2022-07-19 16:45:13,037 INFO L226 Difference]: Without dead ends: 562 [2022-07-19 16:45:13,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:13,040 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 17 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2708 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 [2022-07-19 16:45:13,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2708 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:45:13,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-07-19 16:45:13,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2022-07-19 16:45:13,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 440 states have (on average 1.6772727272727272) internal successors, (738), 459 states have internal predecessors, (738), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-07-19 16:45:13,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 927 transitions. [2022-07-19 16:45:13,058 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 927 transitions. Word has length 133 [2022-07-19 16:45:13,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:13,059 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 927 transitions. [2022-07-19 16:45:13,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:13,059 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 927 transitions. [2022-07-19 16:45:13,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 16:45:13,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:13,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:13,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-19 16:45:13,275 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 [2022-07-19 16:45:13,276 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:13,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:13,276 INFO L85 PathProgramCache]: Analyzing trace with hash 390848205, now seen corresponding path program 1 times [2022-07-19 16:45:13,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:13,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909679925] [2022-07-19 16:45:13,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:13,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:13,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:13,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:13,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:13,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 16:45:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:13,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:13,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:13,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 16:45:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:13,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:13,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:13,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:13,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:13,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:13,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:13,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:13,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:13,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:13,690 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 16:45:13,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:13,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909679925] [2022-07-19 16:45:13,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909679925] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:13,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316022511] [2022-07-19 16:45:13,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:13,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:13,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:13,696 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) [2022-07-19 16:45:13,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 16:45:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:13,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 16:45:13,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:45:14,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:14,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316022511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:14,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:14,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-19 16:45:14,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084110270] [2022-07-19 16:45:14,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:14,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:45:14,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:14,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:45:14,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-19 16:45:14,067 INFO L87 Difference]: Start difference. First operand 562 states and 927 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 16:45:14,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:14,164 INFO L93 Difference]: Finished difference Result 1125 states and 1865 transitions. [2022-07-19 16:45:14,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:45:14,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 134 [2022-07-19 16:45:14,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:14,184 INFO L225 Difference]: With dead ends: 1125 [2022-07-19 16:45:14,184 INFO L226 Difference]: Without dead ends: 585 [2022-07-19 16:45:14,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:45:14,187 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 148 mSDsluCounter, 4417 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 5323 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:14,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 5323 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:45:14,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-07-19 16:45:14,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 581. [2022-07-19 16:45:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 456 states have (on average 1.6754385964912282) internal successors, (764), 477 states have internal predecessors, (764), 98 states have call successors, (98), 25 states have call predecessors, (98), 26 states have return successors, (96), 91 states have call predecessors, (96), 93 states have call successors, (96) [2022-07-19 16:45:14,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 958 transitions. [2022-07-19 16:45:14,208 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 958 transitions. Word has length 134 [2022-07-19 16:45:14,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:14,208 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 958 transitions. [2022-07-19 16:45:14,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 16:45:14,208 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 958 transitions. [2022-07-19 16:45:14,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 16:45:14,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:14,212 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:14,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:14,428 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 [2022-07-19 16:45:14,429 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:14,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:14,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1677330510, now seen corresponding path program 1 times [2022-07-19 16:45:14,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:14,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750372585] [2022-07-19 16:45:14,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:14,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:14,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:14,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:14,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:14,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 16:45:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:14,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:14,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:14,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 16:45:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:14,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:14,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:14,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:14,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:14,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:14,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:14,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:14,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 16:45:14,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:14,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750372585] [2022-07-19 16:45:14,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750372585] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:14,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501212556] [2022-07-19 16:45:14,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:14,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:14,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:14,820 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) [2022-07-19 16:45:14,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 16:45:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:15,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:45:15,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:45:15,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:15,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501212556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:15,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:15,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-19 16:45:15,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015507777] [2022-07-19 16:45:15,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:15,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:45:15,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:15,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:45:15,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:45:15,176 INFO L87 Difference]: Start difference. First operand 581 states and 958 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:15,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:15,329 INFO L93 Difference]: Finished difference Result 1166 states and 1939 transitions. [2022-07-19 16:45:15,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 16:45:15,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2022-07-19 16:45:15,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:15,335 INFO L225 Difference]: With dead ends: 1166 [2022-07-19 16:45:15,336 INFO L226 Difference]: Without dead ends: 581 [2022-07-19 16:45:15,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:15,339 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 135 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:15,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2525 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:45:15,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-07-19 16:45:15,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2022-07-19 16:45:15,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 456 states have (on average 1.6644736842105263) internal successors, (759), 477 states have internal predecessors, (759), 98 states have call successors, (98), 25 states have call predecessors, (98), 26 states have return successors, (96), 91 states have call predecessors, (96), 93 states have call successors, (96) [2022-07-19 16:45:15,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 953 transitions. [2022-07-19 16:45:15,362 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 953 transitions. Word has length 134 [2022-07-19 16:45:15,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:15,363 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 953 transitions. [2022-07-19 16:45:15,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:15,363 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 953 transitions. [2022-07-19 16:45:15,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-19 16:45:15,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:15,367 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:15,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:15,581 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 [2022-07-19 16:45:15,582 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:15,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:15,582 INFO L85 PathProgramCache]: Analyzing trace with hash 572426598, now seen corresponding path program 1 times [2022-07-19 16:45:15,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:15,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752794173] [2022-07-19 16:45:15,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:15,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:15,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:15,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:15,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:15,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:45:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:15,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:15,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:15,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:45:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:15,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:15,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:15,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:15,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:15,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:15,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:15,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:15,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 16:45:15,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:15,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752794173] [2022-07-19 16:45:15,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752794173] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:15,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312214625] [2022-07-19 16:45:15,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:15,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:15,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:15,948 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) [2022-07-19 16:45:15,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 16:45:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:16,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:45:16,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:45:16,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:16,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312214625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:16,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:16,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-19 16:45:16,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099508490] [2022-07-19 16:45:16,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:16,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:45:16,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:16,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:45:16,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:45:16,307 INFO L87 Difference]: Start difference. First operand 581 states and 953 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:16,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:16,419 INFO L93 Difference]: Finished difference Result 1166 states and 1929 transitions. [2022-07-19 16:45:16,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 16:45:16,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2022-07-19 16:45:16,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:16,435 INFO L225 Difference]: With dead ends: 1166 [2022-07-19 16:45:16,435 INFO L226 Difference]: Without dead ends: 581 [2022-07-19 16:45:16,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:16,440 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 129 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:16,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2525 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:45:16,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-07-19 16:45:16,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2022-07-19 16:45:16,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 456 states have (on average 1.6535087719298245) internal successors, (754), 477 states have internal predecessors, (754), 98 states have call successors, (98), 25 states have call predecessors, (98), 26 states have return successors, (96), 91 states have call predecessors, (96), 93 states have call successors, (96) [2022-07-19 16:45:16,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 948 transitions. [2022-07-19 16:45:16,460 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 948 transitions. Word has length 136 [2022-07-19 16:45:16,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:16,460 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 948 transitions. [2022-07-19 16:45:16,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:16,461 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 948 transitions. [2022-07-19 16:45:16,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-19 16:45:16,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:16,464 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:16,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:16,680 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 [2022-07-19 16:45:16,680 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:16,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:16,681 INFO L85 PathProgramCache]: Analyzing trace with hash -516128210, now seen corresponding path program 1 times [2022-07-19 16:45:16,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:16,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627451019] [2022-07-19 16:45:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:16,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:16,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:16,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:16,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:16,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:45:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:16,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:16,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:17,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:45:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:17,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:17,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:17,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:17,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:17,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:17,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:17,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:17,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:17,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 16:45:17,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:17,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627451019] [2022-07-19 16:45:17,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627451019] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:17,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68724599] [2022-07-19 16:45:17,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:17,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:17,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:17,063 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) [2022-07-19 16:45:17,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 16:45:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:17,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:45:17,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:45:17,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:17,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68724599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:17,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:17,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-19 16:45:17,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099345379] [2022-07-19 16:45:17,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:17,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:45:17,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:17,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:45:17,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:45:17,435 INFO L87 Difference]: Start difference. First operand 581 states and 948 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:17,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:17,578 INFO L93 Difference]: Finished difference Result 1202 states and 1977 transitions. [2022-07-19 16:45:17,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:45:17,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2022-07-19 16:45:17,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:17,582 INFO L225 Difference]: With dead ends: 1202 [2022-07-19 16:45:17,582 INFO L226 Difference]: Without dead ends: 647 [2022-07-19 16:45:17,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:17,585 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 179 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:17,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2535 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:45:17,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-07-19 16:45:17,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 632. [2022-07-19 16:45:17,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 506 states have (on average 1.658102766798419) internal successors, (839), 527 states have internal predecessors, (839), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 91 states have call predecessors, (95), 93 states have call successors, (95) [2022-07-19 16:45:17,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1032 transitions. [2022-07-19 16:45:17,622 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1032 transitions. Word has length 138 [2022-07-19 16:45:17,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:17,622 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 1032 transitions. [2022-07-19 16:45:17,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:17,622 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1032 transitions. [2022-07-19 16:45:17,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-19 16:45:17,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:17,626 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:17,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:17,847 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 [2022-07-19 16:45:17,847 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:17,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:17,848 INFO L85 PathProgramCache]: Analyzing trace with hash 916705563, now seen corresponding path program 1 times [2022-07-19 16:45:17,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:17,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107771170] [2022-07-19 16:45:17,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:17,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:17,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:17,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:17,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:18,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:45:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:18,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:18,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:18,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 16:45:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:18,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:18,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:18,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:18,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:18,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:18,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:18,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:18,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:18,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:18,213 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 16:45:18,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:18,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107771170] [2022-07-19 16:45:18,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107771170] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:18,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561464178] [2022-07-19 16:45:18,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:18,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:18,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:18,216 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) [2022-07-19 16:45:18,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-19 16:45:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:18,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 16:45:18,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:45:18,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:18,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561464178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:18,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:18,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-19 16:45:18,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911787676] [2022-07-19 16:45:18,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:18,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:45:18,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:18,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:45:18,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:45:18,632 INFO L87 Difference]: Start difference. First operand 632 states and 1032 transitions. Second operand has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 16:45:18,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:18,778 INFO L93 Difference]: Finished difference Result 1194 states and 1957 transitions. [2022-07-19 16:45:18,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:45:18,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2022-07-19 16:45:18,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:18,784 INFO L225 Difference]: With dead ends: 1194 [2022-07-19 16:45:18,784 INFO L226 Difference]: Without dead ends: 654 [2022-07-19 16:45:18,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:45:18,787 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 177 mSDsluCounter, 5209 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6095 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:18,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6095 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:45:18,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2022-07-19 16:45:18,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 632. [2022-07-19 16:45:18,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 506 states have (on average 1.658102766798419) internal successors, (839), 527 states have internal predecessors, (839), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 91 states have call predecessors, (95), 93 states have call successors, (95) [2022-07-19 16:45:18,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1032 transitions. [2022-07-19 16:45:18,845 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1032 transitions. Word has length 139 [2022-07-19 16:45:18,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:18,846 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 1032 transitions. [2022-07-19 16:45:18,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 16:45:18,847 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1032 transitions. [2022-07-19 16:45:18,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-19 16:45:18,850 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:18,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:18,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:19,051 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 [2022-07-19 16:45:19,051 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:19,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:19,051 INFO L85 PathProgramCache]: Analyzing trace with hash 781948475, now seen corresponding path program 1 times [2022-07-19 16:45:19,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:19,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965796319] [2022-07-19 16:45:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:19,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:19,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:19,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:19,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:19,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:45:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:19,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:19,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:19,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 16:45:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:19,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:19,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:19,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:19,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:19,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:19,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:19,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:19,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:19,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 16:45:19,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:19,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965796319] [2022-07-19 16:45:19,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965796319] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:19,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331407408] [2022-07-19 16:45:19,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:19,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:19,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:19,456 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) [2022-07-19 16:45:19,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-19 16:45:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:19,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:45:19,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:19,798 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:45:19,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:19,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331407408] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:19,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:19,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-19 16:45:19,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273271439] [2022-07-19 16:45:19,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:19,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:45:19,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:19,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:45:19,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:45:19,801 INFO L87 Difference]: Start difference. First operand 632 states and 1032 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:19,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:19,937 INFO L93 Difference]: Finished difference Result 1202 states and 1975 transitions. [2022-07-19 16:45:19,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:45:19,938 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2022-07-19 16:45:19,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:19,943 INFO L225 Difference]: With dead ends: 1202 [2022-07-19 16:45:19,943 INFO L226 Difference]: Without dead ends: 632 [2022-07-19 16:45:19,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:19,946 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 173 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:19,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2535 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:45:19,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-07-19 16:45:19,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2022-07-19 16:45:19,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 506 states have (on average 1.6482213438735178) internal successors, (834), 527 states have internal predecessors, (834), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 91 states have call predecessors, (95), 93 states have call successors, (95) [2022-07-19 16:45:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1027 transitions. [2022-07-19 16:45:19,968 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1027 transitions. Word has length 139 [2022-07-19 16:45:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:19,968 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 1027 transitions. [2022-07-19 16:45:19,968 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:19,969 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1027 transitions. [2022-07-19 16:45:19,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-19 16:45:19,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:19,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:20,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:20,187 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 [2022-07-19 16:45:20,187 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:20,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:20,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2038984762, now seen corresponding path program 1 times [2022-07-19 16:45:20,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:20,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708593255] [2022-07-19 16:45:20,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:20,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:20,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:20,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:20,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:20,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:45:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:20,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:20,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:20,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 16:45:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:20,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:20,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:20,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:20,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:20,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:20,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:20,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:20,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:20,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:20,629 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 16:45:20,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:20,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708593255] [2022-07-19 16:45:20,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708593255] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:20,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040768278] [2022-07-19 16:45:20,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:20,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:20,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:20,631 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) [2022-07-19 16:45:20,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-19 16:45:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:20,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 16:45:20,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 16:45:21,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:21,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040768278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:21,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:21,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-19 16:45:21,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663596291] [2022-07-19 16:45:21,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:21,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:45:21,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:21,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:45:21,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-19 16:45:21,033 INFO L87 Difference]: Start difference. First operand 632 states and 1027 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 16:45:21,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:21,116 INFO L93 Difference]: Finished difference Result 1129 states and 1849 transitions. [2022-07-19 16:45:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:45:21,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2022-07-19 16:45:21,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:21,122 INFO L225 Difference]: With dead ends: 1129 [2022-07-19 16:45:21,122 INFO L226 Difference]: Without dead ends: 656 [2022-07-19 16:45:21,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:45:21,125 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 134 mSDsluCounter, 4384 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5282 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:21,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5282 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:45:21,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-07-19 16:45:21,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 651. [2022-07-19 16:45:21,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 522 states have (on average 1.6475095785440612) internal successors, (860), 545 states have internal predecessors, (860), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2022-07-19 16:45:21,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1057 transitions. [2022-07-19 16:45:21,148 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1057 transitions. Word has length 139 [2022-07-19 16:45:21,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:21,149 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1057 transitions. [2022-07-19 16:45:21,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 16:45:21,149 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1057 transitions. [2022-07-19 16:45:21,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-19 16:45:21,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:21,153 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:21,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:21,363 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 [2022-07-19 16:45:21,363 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:21,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:21,364 INFO L85 PathProgramCache]: Analyzing trace with hash 429591986, now seen corresponding path program 1 times [2022-07-19 16:45:21,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:21,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516132274] [2022-07-19 16:45:21,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:21,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:21,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:21,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:21,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:21,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:45:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:21,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:21,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:21,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 16:45:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:21,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:21,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:21,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:21,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:21,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:21,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:21,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:21,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:21,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:21,780 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 16:45:21,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:21,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516132274] [2022-07-19 16:45:21,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516132274] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:21,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561872678] [2022-07-19 16:45:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:21,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:21,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:21,782 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) [2022-07-19 16:45:21,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-19 16:45:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:22,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 16:45:22,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:22,140 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 16:45:22,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:22,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561872678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:22,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:22,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-19 16:45:22,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960275735] [2022-07-19 16:45:22,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:22,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:45:22,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:22,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:45:22,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-19 16:45:22,142 INFO L87 Difference]: Start difference. First operand 651 states and 1057 transitions. Second operand has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 16:45:22,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:22,232 INFO L93 Difference]: Finished difference Result 1159 states and 1900 transitions. [2022-07-19 16:45:22,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:45:22,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2022-07-19 16:45:22,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:22,238 INFO L225 Difference]: With dead ends: 1159 [2022-07-19 16:45:22,238 INFO L226 Difference]: Without dead ends: 686 [2022-07-19 16:45:22,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:45:22,241 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 143 mSDsluCounter, 4374 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5272 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:22,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5272 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:45:22,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-07-19 16:45:22,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 651. [2022-07-19 16:45:22,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 522 states have (on average 1.6475095785440612) internal successors, (860), 545 states have internal predecessors, (860), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2022-07-19 16:45:22,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1057 transitions. [2022-07-19 16:45:22,264 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1057 transitions. Word has length 140 [2022-07-19 16:45:22,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:22,264 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1057 transitions. [2022-07-19 16:45:22,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 16:45:22,265 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1057 transitions. [2022-07-19 16:45:22,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-19 16:45:22,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:22,269 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] [2022-07-19 16:45:22,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:22,483 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 [2022-07-19 16:45:22,483 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:22,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:22,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1424927282, now seen corresponding path program 1 times [2022-07-19 16:45:22,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:22,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768331592] [2022-07-19 16:45:22,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:22,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:22,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:22,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:22,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:22,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:45:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:22,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:22,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:22,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 16:45:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:22,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:22,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:22,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:22,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:22,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:22,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:22,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:22,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:22,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 16:45:22,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:22,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768331592] [2022-07-19 16:45:22,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768331592] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:22,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268081953] [2022-07-19 16:45:22,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:22,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:22,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:22,874 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) [2022-07-19 16:45:22,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-19 16:45:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:23,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 16:45:23,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:23,290 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 16:45:23,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:23,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268081953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:23,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:23,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-19 16:45:23,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843966322] [2022-07-19 16:45:23,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:23,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:45:23,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:23,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:45:23,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:45:23,292 INFO L87 Difference]: Start difference. First operand 651 states and 1057 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 16:45:23,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:23,423 INFO L93 Difference]: Finished difference Result 1144 states and 1874 transitions. [2022-07-19 16:45:23,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:45:23,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2022-07-19 16:45:23,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:23,429 INFO L225 Difference]: With dead ends: 1144 [2022-07-19 16:45:23,429 INFO L226 Difference]: Without dead ends: 671 [2022-07-19 16:45:23,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:45:23,434 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 177 mSDsluCounter, 5215 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6103 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:23,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6103 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:45:23,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-07-19 16:45:23,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 651. [2022-07-19 16:45:23,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 522 states have (on average 1.6475095785440612) internal successors, (860), 545 states have internal predecessors, (860), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2022-07-19 16:45:23,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1057 transitions. [2022-07-19 16:45:23,457 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1057 transitions. Word has length 140 [2022-07-19 16:45:23,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:23,458 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1057 transitions. [2022-07-19 16:45:23,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 16:45:23,458 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1057 transitions. [2022-07-19 16:45:23,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-19 16:45:23,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:23,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:23,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:23,675 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 [2022-07-19 16:45:23,675 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:23,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:23,676 INFO L85 PathProgramCache]: Analyzing trace with hash 401422641, now seen corresponding path program 1 times [2022-07-19 16:45:23,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:23,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623045196] [2022-07-19 16:45:23,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:23,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:23,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:23,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:23,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:23,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:45:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:23,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:23,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 16:45:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:24,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 16:45:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:24,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:24,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:24,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:24,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:24,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:24,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:24,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:24,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:24,061 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 16:45:24,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:24,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623045196] [2022-07-19 16:45:24,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623045196] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:24,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645837184] [2022-07-19 16:45:24,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:24,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:24,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:24,064 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) [2022-07-19 16:45:24,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-19 16:45:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:24,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:45:24,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:24,424 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 16:45:24,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:24,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645837184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:24,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:24,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-19 16:45:24,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585047862] [2022-07-19 16:45:24,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:24,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:45:24,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:24,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:45:24,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:45:24,428 INFO L87 Difference]: Start difference. First operand 651 states and 1057 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:24,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:24,471 INFO L93 Difference]: Finished difference Result 1196 states and 1959 transitions. [2022-07-19 16:45:24,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:45:24,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2022-07-19 16:45:24,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:24,476 INFO L225 Difference]: With dead ends: 1196 [2022-07-19 16:45:24,476 INFO L226 Difference]: Without dead ends: 651 [2022-07-19 16:45:24,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:24,479 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 23 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:24,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2677 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:45:24,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-07-19 16:45:24,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2022-07-19 16:45:24,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 522 states have (on average 1.6398467432950192) internal successors, (856), 545 states have internal predecessors, (856), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2022-07-19 16:45:24,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1053 transitions. [2022-07-19 16:45:24,499 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1053 transitions. Word has length 140 [2022-07-19 16:45:24,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:24,500 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1053 transitions. [2022-07-19 16:45:24,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:24,500 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1053 transitions. [2022-07-19 16:45:24,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 16:45:24,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:24,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:24,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:24,717 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 [2022-07-19 16:45:24,717 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:24,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:24,718 INFO L85 PathProgramCache]: Analyzing trace with hash 144732242, now seen corresponding path program 1 times [2022-07-19 16:45:24,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:24,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855704438] [2022-07-19 16:45:24,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:24,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:24,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:24,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:24,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:24,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:45:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:24,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:24,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:25,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 16:45:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:25,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:25,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:25,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:25,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:25,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:25,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:25,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:25,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:25,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 16:45:25,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:25,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855704438] [2022-07-19 16:45:25,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855704438] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:25,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017588073] [2022-07-19 16:45:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:25,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:25,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:25,084 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) [2022-07-19 16:45:25,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-19 16:45:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:25,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 16:45:25,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 16:45:25,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:25,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017588073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:25,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:25,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-19 16:45:25,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164027345] [2022-07-19 16:45:25,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:25,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:45:25,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:25,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:45:25,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:45:25,472 INFO L87 Difference]: Start difference. First operand 651 states and 1053 transitions. Second operand has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 16:45:25,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:25,604 INFO L93 Difference]: Finished difference Result 1144 states and 1871 transitions. [2022-07-19 16:45:25,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:45:25,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 141 [2022-07-19 16:45:25,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:25,609 INFO L225 Difference]: With dead ends: 1144 [2022-07-19 16:45:25,609 INFO L226 Difference]: Without dead ends: 671 [2022-07-19 16:45:25,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:45:25,612 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 185 mSDsluCounter, 5178 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 6060 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:25,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 6060 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:45:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-07-19 16:45:25,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 651. [2022-07-19 16:45:25,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 522 states have (on average 1.6398467432950192) internal successors, (856), 545 states have internal predecessors, (856), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2022-07-19 16:45:25,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1053 transitions. [2022-07-19 16:45:25,634 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1053 transitions. Word has length 141 [2022-07-19 16:45:25,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:25,634 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1053 transitions. [2022-07-19 16:45:25,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 16:45:25,634 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1053 transitions. [2022-07-19 16:45:25,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-19 16:45:25,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:25,638 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:25,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:25,851 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 [2022-07-19 16:45:25,851 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:25,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash 278048503, now seen corresponding path program 1 times [2022-07-19 16:45:25,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:25,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020516296] [2022-07-19 16:45:25,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:25,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:25,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:45:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:45:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,214 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 16:45:26,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:26,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020516296] [2022-07-19 16:45:26,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020516296] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:26,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818279486] [2022-07-19 16:45:26,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:26,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:26,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:26,216 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) [2022-07-19 16:45:26,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-19 16:45:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 16:45:26,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:26,512 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 16:45:26,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:26,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818279486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:26,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:26,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-19 16:45:26,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642525250] [2022-07-19 16:45:26,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:26,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:45:26,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:26,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:45:26,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:45:26,515 INFO L87 Difference]: Start difference. First operand 651 states and 1053 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:26,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:26,569 INFO L93 Difference]: Finished difference Result 1252 states and 2041 transitions. [2022-07-19 16:45:26,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 16:45:26,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2022-07-19 16:45:26,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:26,573 INFO L225 Difference]: With dead ends: 1252 [2022-07-19 16:45:26,573 INFO L226 Difference]: Without dead ends: 687 [2022-07-19 16:45:26,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:26,576 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 38 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:26,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2653 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:45:26,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-07-19 16:45:26,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 675. [2022-07-19 16:45:26,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 546 states have (on average 1.619047619047619) internal successors, (884), 569 states have internal predecessors, (884), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2022-07-19 16:45:26,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1081 transitions. [2022-07-19 16:45:26,599 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1081 transitions. Word has length 142 [2022-07-19 16:45:26,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:26,599 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1081 transitions. [2022-07-19 16:45:26,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 16:45:26,599 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1081 transitions. [2022-07-19 16:45:26,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-19 16:45:26,603 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:26,603 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:26,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:26,830 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 [2022-07-19 16:45:26,830 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:26,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:26,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2115711700, now seen corresponding path program 1 times [2022-07-19 16:45:26,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:26,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763550098] [2022-07-19 16:45:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:26,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:45:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:26,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:27,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:45:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:27,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:27,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:27,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:27,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:45:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:27,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:45:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:27,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:27,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:27,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:45:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:27,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:27,154 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 16:45:27,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:27,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763550098] [2022-07-19 16:45:27,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763550098] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:27,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388374223] [2022-07-19 16:45:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:27,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:27,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:27,160 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) [2022-07-19 16:45:27,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-19 16:45:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:27,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:45:27,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 16:45:27,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:27,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388374223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:27,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:27,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-19 16:45:27,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359104940] [2022-07-19 16:45:27,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:27,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:45:27,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:27,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:45:27,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:27,541 INFO L87 Difference]: Start difference. First operand 675 states and 1081 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 16:45:27,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:27,960 INFO L93 Difference]: Finished difference Result 1151 states and 1893 transitions. [2022-07-19 16:45:27,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:45:27,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2022-07-19 16:45:27,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:27,965 INFO L225 Difference]: With dead ends: 1151 [2022-07-19 16:45:27,965 INFO L226 Difference]: Without dead ends: 683 [2022-07-19 16:45:27,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:45:27,968 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 842 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:27,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 2276 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 16:45:27,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-07-19 16:45:27,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-07-19 16:45:27,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 553 states have (on average 1.620253164556962) internal successors, (896), 576 states have internal predecessors, (896), 99 states have call successors, (99), 27 states have call predecessors, (99), 30 states have return successors, (99), 92 states have call predecessors, (99), 94 states have call successors, (99) [2022-07-19 16:45:27,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1094 transitions. [2022-07-19 16:45:27,990 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1094 transitions. Word has length 142 [2022-07-19 16:45:27,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:27,990 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 1094 transitions. [2022-07-19 16:45:27,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 16:45:27,991 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1094 transitions. [2022-07-19 16:45:27,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-19 16:45:27,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:27,994 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] [2022-07-19 16:45:28,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:28,214 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 [2022-07-19 16:45:28,215 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:28,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:28,215 INFO L85 PathProgramCache]: Analyzing trace with hash -990744076, now seen corresponding path program 1 times [2022-07-19 16:45:28,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:28,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68848911] [2022-07-19 16:45:28,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:28,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:28,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:28,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:28,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:28,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:45:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:28,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:28,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:28,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:45:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:28,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:28,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:28,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:28,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:45:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:28,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 16:45:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:28,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:28,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:28,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 16:45:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:28,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:45:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:28,567 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 16:45:28,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:28,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68848911] [2022-07-19 16:45:28,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68848911] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:28,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815288325] [2022-07-19 16:45:28,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:28,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:28,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:28,569 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) [2022-07-19 16:45:28,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-19 16:45:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:28,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:45:28,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:28,934 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 16:45:28,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:28,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815288325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:28,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:28,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-19 16:45:28,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869344019] [2022-07-19 16:45:28,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:28,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:45:28,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:28,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:45:28,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:28,936 INFO L87 Difference]: Start difference. First operand 683 states and 1094 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 16:45:29,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:29,371 INFO L93 Difference]: Finished difference Result 1167 states and 1916 transitions. [2022-07-19 16:45:29,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:45:29,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 144 [2022-07-19 16:45:29,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:29,376 INFO L225 Difference]: With dead ends: 1167 [2022-07-19 16:45:29,376 INFO L226 Difference]: Without dead ends: 691 [2022-07-19 16:45:29,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:45:29,379 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 845 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:29,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 2276 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 16:45:29,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-07-19 16:45:29,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2022-07-19 16:45:29,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 560 states have (on average 1.6214285714285714) internal successors, (908), 583 states have internal predecessors, (908), 99 states have call successors, (99), 28 states have call predecessors, (99), 31 states have return successors, (100), 92 states have call predecessors, (100), 94 states have call successors, (100) [2022-07-19 16:45:29,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1107 transitions. [2022-07-19 16:45:29,399 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1107 transitions. Word has length 144 [2022-07-19 16:45:29,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:29,399 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 1107 transitions. [2022-07-19 16:45:29,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 16:45:29,399 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1107 transitions. [2022-07-19 16:45:29,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 16:45:29,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:29,403 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] [2022-07-19 16:45:29,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:29,630 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 [2022-07-19 16:45:29,630 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:29,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:29,630 INFO L85 PathProgramCache]: Analyzing trace with hash -193570132, now seen corresponding path program 1 times [2022-07-19 16:45:29,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:29,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065443186] [2022-07-19 16:45:29,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:29,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:29,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:29,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:29,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:29,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:45:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:29,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:29,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:29,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:45:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:29,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:29,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:29,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:29,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:45:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:29,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 16:45:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:29,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:29,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:29,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 16:45:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:29,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 16:45:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:29,968 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 16:45:29,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:29,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065443186] [2022-07-19 16:45:29,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065443186] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:29,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933128584] [2022-07-19 16:45:29,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:29,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:29,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:29,972 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) [2022-07-19 16:45:29,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-19 16:45:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:30,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:45:30,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 16:45:30,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:30,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933128584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:30,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:30,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-19 16:45:30,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268877847] [2022-07-19 16:45:30,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:30,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:45:30,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:30,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:45:30,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:30,347 INFO L87 Difference]: Start difference. First operand 691 states and 1107 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 16:45:30,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:30,844 INFO L93 Difference]: Finished difference Result 1183 states and 1939 transitions. [2022-07-19 16:45:30,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:45:30,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 146 [2022-07-19 16:45:30,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:30,849 INFO L225 Difference]: With dead ends: 1183 [2022-07-19 16:45:30,849 INFO L226 Difference]: Without dead ends: 699 [2022-07-19 16:45:30,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:45:30,852 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 831 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:30,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 2276 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 16:45:30,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-07-19 16:45:30,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2022-07-19 16:45:30,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 567 states have (on average 1.6225749559082892) internal successors, (920), 590 states have internal predecessors, (920), 99 states have call successors, (99), 29 states have call predecessors, (99), 32 states have return successors, (101), 92 states have call predecessors, (101), 94 states have call successors, (101) [2022-07-19 16:45:30,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1120 transitions. [2022-07-19 16:45:30,876 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1120 transitions. Word has length 146 [2022-07-19 16:45:30,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:30,876 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 1120 transitions. [2022-07-19 16:45:30,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 16:45:30,877 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1120 transitions. [2022-07-19 16:45:30,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-19 16:45:30,880 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:30,880 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] [2022-07-19 16:45:30,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:31,095 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 [2022-07-19 16:45:31,095 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:31,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:31,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2115048172, now seen corresponding path program 1 times [2022-07-19 16:45:31,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:31,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203479989] [2022-07-19 16:45:31,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:31,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:31,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:31,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:31,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:31,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:45:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:31,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:31,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:45:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:31,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:31,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:31,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:31,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 16:45:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:31,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 16:45:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:31,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:31,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:31,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 16:45:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:31,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 16:45:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:31,403 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 16:45:31,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:31,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203479989] [2022-07-19 16:45:31,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203479989] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:31,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268600529] [2022-07-19 16:45:31,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:31,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:31,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:31,408 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) [2022-07-19 16:45:31,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-19 16:45:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:31,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:45:31,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 16:45:31,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:31,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268600529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:31,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:31,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-19 16:45:31,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048291605] [2022-07-19 16:45:31,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:31,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:45:31,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:31,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:45:31,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:31,806 INFO L87 Difference]: Start difference. First operand 699 states and 1120 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 16:45:32,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:32,201 INFO L93 Difference]: Finished difference Result 1199 states and 1962 transitions. [2022-07-19 16:45:32,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:45:32,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2022-07-19 16:45:32,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:32,205 INFO L225 Difference]: With dead ends: 1199 [2022-07-19 16:45:32,206 INFO L226 Difference]: Without dead ends: 707 [2022-07-19 16:45:32,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:45:32,209 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 833 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:32,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 2276 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 16:45:32,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-07-19 16:45:32,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2022-07-19 16:45:32,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 574 states have (on average 1.6236933797909407) internal successors, (932), 597 states have internal predecessors, (932), 99 states have call successors, (99), 30 states have call predecessors, (99), 33 states have return successors, (102), 92 states have call predecessors, (102), 94 states have call successors, (102) [2022-07-19 16:45:32,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1133 transitions. [2022-07-19 16:45:32,230 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1133 transitions. Word has length 148 [2022-07-19 16:45:32,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:32,231 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 1133 transitions. [2022-07-19 16:45:32,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 16:45:32,231 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1133 transitions. [2022-07-19 16:45:32,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-19 16:45:32,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:32,235 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:32,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-07-19 16:45:32,451 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 [2022-07-19 16:45:32,451 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:32,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:32,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1609352748, now seen corresponding path program 1 times [2022-07-19 16:45:32,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:32,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303877585] [2022-07-19 16:45:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:32,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:32,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:32,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:32,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:32,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:45:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:32,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:32,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:32,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:45:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:32,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:32,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:32,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:32,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:45:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:32,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:45:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:32,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:32,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:32,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:32,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:45:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-19 16:45:32,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:32,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303877585] [2022-07-19 16:45:32,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303877585] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:32,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3755425] [2022-07-19 16:45:32,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:32,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:32,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:32,788 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) [2022-07-19 16:45:32,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-19 16:45:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:33,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:45:33,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:33,241 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 16:45:33,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:33,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3755425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:33,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:33,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-19 16:45:33,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427304069] [2022-07-19 16:45:33,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:33,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:45:33,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:33,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:45:33,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:33,243 INFO L87 Difference]: Start difference. First operand 707 states and 1133 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 16:45:33,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:33,529 INFO L93 Difference]: Finished difference Result 756 states and 1205 transitions. [2022-07-19 16:45:33,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:45:33,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 150 [2022-07-19 16:45:33,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:33,534 INFO L225 Difference]: With dead ends: 756 [2022-07-19 16:45:33,534 INFO L226 Difference]: Without dead ends: 741 [2022-07-19 16:45:33,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:33,535 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 866 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:33,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1612 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 16:45:33,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-07-19 16:45:33,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 710. [2022-07-19 16:45:33,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 577 states have (on average 1.6204506065857887) internal successors, (935), 600 states have internal predecessors, (935), 99 states have call successors, (99), 30 states have call predecessors, (99), 33 states have return successors, (102), 92 states have call predecessors, (102), 94 states have call successors, (102) [2022-07-19 16:45:33,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1136 transitions. [2022-07-19 16:45:33,558 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1136 transitions. Word has length 150 [2022-07-19 16:45:33,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:33,559 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1136 transitions. [2022-07-19 16:45:33,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 16:45:33,559 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1136 transitions. [2022-07-19 16:45:33,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 16:45:33,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:33,563 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] [2022-07-19 16:45:33,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:33,787 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 [2022-07-19 16:45:33,788 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:33,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:33,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1229850585, now seen corresponding path program 1 times [2022-07-19 16:45:33,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:33,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834910928] [2022-07-19 16:45:33,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:33,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:33,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:33,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:33,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:33,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:45:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:33,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:33,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:45:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:45:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:45:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:45:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:45:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,082 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-19 16:45:34,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:34,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834910928] [2022-07-19 16:45:34,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834910928] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:34,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526793765] [2022-07-19 16:45:34,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:34,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:34,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:34,085 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) [2022-07-19 16:45:34,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-19 16:45:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 1887 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 16:45:34,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:34,361 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 16:45:34,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:34,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526793765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:34,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:34,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-07-19 16:45:34,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173280868] [2022-07-19 16:45:34,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:34,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:45:34,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:34,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:45:34,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:34,363 INFO L87 Difference]: Start difference. First operand 710 states and 1136 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-19 16:45:34,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:34,392 INFO L93 Difference]: Finished difference Result 727 states and 1157 transitions. [2022-07-19 16:45:34,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:45:34,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 156 [2022-07-19 16:45:34,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:34,396 INFO L225 Difference]: With dead ends: 727 [2022-07-19 16:45:34,397 INFO L226 Difference]: Without dead ends: 712 [2022-07-19 16:45:34,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:45:34,398 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 37 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:34,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3578 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:45:34,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-07-19 16:45:34,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 710. [2022-07-19 16:45:34,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 577 states have (on average 1.6187175043327557) internal successors, (934), 600 states have internal predecessors, (934), 99 states have call successors, (99), 30 states have call predecessors, (99), 33 states have return successors, (102), 92 states have call predecessors, (102), 94 states have call successors, (102) [2022-07-19 16:45:34,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1135 transitions. [2022-07-19 16:45:34,429 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1135 transitions. Word has length 156 [2022-07-19 16:45:34,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:34,430 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1135 transitions. [2022-07-19 16:45:34,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-19 16:45:34,431 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1135 transitions. [2022-07-19 16:45:34,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 16:45:34,435 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:34,435 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:34,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:34,659 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 [2022-07-19 16:45:34,660 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:34,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:34,660 INFO L85 PathProgramCache]: Analyzing trace with hash -392192306, now seen corresponding path program 1 times [2022-07-19 16:45:34,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:34,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778896039] [2022-07-19 16:45:34,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:34,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:45:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:45:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:45:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:45:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:34,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:45:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:45:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:45:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,006 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 16:45:35,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:35,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778896039] [2022-07-19 16:45:35,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778896039] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:35,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869903107] [2022-07-19 16:45:35,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:35,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:35,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:35,012 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) [2022-07-19 16:45:35,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-19 16:45:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 16:45:35,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:35,290 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 16:45:35,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:35,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869903107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:35,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:35,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-19 16:45:35,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848966692] [2022-07-19 16:45:35,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:35,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:45:35,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:35,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:45:35,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:45:35,292 INFO L87 Difference]: Start difference. First operand 710 states and 1135 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:45:35,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:35,362 INFO L93 Difference]: Finished difference Result 1394 states and 2240 transitions. [2022-07-19 16:45:35,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:45:35,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 167 [2022-07-19 16:45:35,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:35,367 INFO L225 Difference]: With dead ends: 1394 [2022-07-19 16:45:35,367 INFO L226 Difference]: Without dead ends: 679 [2022-07-19 16:45:35,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:45:35,370 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 11 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:35,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2676 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:45:35,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-07-19 16:45:35,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2022-07-19 16:45:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 549 states have (on average 1.6174863387978142) internal successors, (888), 570 states have internal predecessors, (888), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2022-07-19 16:45:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1085 transitions. [2022-07-19 16:45:35,400 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1085 transitions. Word has length 167 [2022-07-19 16:45:35,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:35,400 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 1085 transitions. [2022-07-19 16:45:35,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:45:35,401 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1085 transitions. [2022-07-19 16:45:35,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-19 16:45:35,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:35,404 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:35,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-07-19 16:45:35,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-19 16:45:35,619 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:35,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:35,620 INFO L85 PathProgramCache]: Analyzing trace with hash 616808057, now seen corresponding path program 1 times [2022-07-19 16:45:35,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:35,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137660557] [2022-07-19 16:45:35,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:35,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:45:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 16:45:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:45:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:45:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:45:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:45:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:45:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 16:45:35,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:35,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137660557] [2022-07-19 16:45:35,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137660557] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:35,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333147192] [2022-07-19 16:45:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:35,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:35,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:35,990 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) [2022-07-19 16:45:35,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-19 16:45:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:36,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1927 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-19 16:45:36,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 16:45:36,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:36,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333147192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:36,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:36,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-19 16:45:36,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174866586] [2022-07-19 16:45:36,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:36,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:45:36,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:36,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:45:36,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-19 16:45:36,389 INFO L87 Difference]: Start difference. First operand 679 states and 1085 transitions. Second operand has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 16:45:36,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:36,470 INFO L93 Difference]: Finished difference Result 1327 states and 2134 transitions. [2022-07-19 16:45:36,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:45:36,471 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 169 [2022-07-19 16:45:36,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:36,476 INFO L225 Difference]: With dead ends: 1327 [2022-07-19 16:45:36,476 INFO L226 Difference]: Without dead ends: 679 [2022-07-19 16:45:36,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:45:36,479 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 143 mSDsluCounter, 4390 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5303 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:36,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5303 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:45:36,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-07-19 16:45:36,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 658. [2022-07-19 16:45:36,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 528 states have (on average 1.6174242424242424) internal successors, (854), 549 states have internal predecessors, (854), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2022-07-19 16:45:36,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1051 transitions. [2022-07-19 16:45:36,503 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1051 transitions. Word has length 169 [2022-07-19 16:45:36,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:36,503 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 1051 transitions. [2022-07-19 16:45:36,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 16:45:36,503 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1051 transitions. [2022-07-19 16:45:36,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-19 16:45:36,507 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:36,507 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:36,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:36,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-19 16:45:36,733 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:36,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:36,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1646008076, now seen corresponding path program 1 times [2022-07-19 16:45:36,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:36,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124596117] [2022-07-19 16:45:36,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:36,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:36,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:36,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:36,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:36,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 16:45:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:36,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:36,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:37,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 16:45:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:37,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:37,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:37,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:37,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:45:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:37,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:45:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:37,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:37,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:37,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:37,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:45:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:37,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:45:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:37,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:45:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:37,223 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 16:45:37,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:37,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124596117] [2022-07-19 16:45:37,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124596117] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:37,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386850270] [2022-07-19 16:45:37,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:37,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:37,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:37,228 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) [2022-07-19 16:45:37,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-19 16:45:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:37,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 1933 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:45:37,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 16:45:37,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:37,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386850270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:37,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:37,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2022-07-19 16:45:37,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304042279] [2022-07-19 16:45:37,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:37,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:45:37,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:37,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:45:37,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-07-19 16:45:37,527 INFO L87 Difference]: Start difference. First operand 658 states and 1051 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:45:37,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:37,635 INFO L93 Difference]: Finished difference Result 1285 states and 2068 transitions. [2022-07-19 16:45:37,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:45:37,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 171 [2022-07-19 16:45:37,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:37,639 INFO L225 Difference]: With dead ends: 1285 [2022-07-19 16:45:37,639 INFO L226 Difference]: Without dead ends: 658 [2022-07-19 16:45:37,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:45:37,641 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 176 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:37,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2509 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:45:37,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-07-19 16:45:37,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2022-07-19 16:45:37,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 528 states have (on average 1.615530303030303) internal successors, (853), 549 states have internal predecessors, (853), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2022-07-19 16:45:37,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1050 transitions. [2022-07-19 16:45:37,662 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1050 transitions. Word has length 171 [2022-07-19 16:45:37,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:37,662 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 1050 transitions. [2022-07-19 16:45:37,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:45:37,662 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1050 transitions. [2022-07-19 16:45:37,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-19 16:45:37,665 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:37,665 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:37,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:37,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-19 16:45:37,891 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:37,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:37,891 INFO L85 PathProgramCache]: Analyzing trace with hash 495722115, now seen corresponding path program 1 times [2022-07-19 16:45:37,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:37,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917570439] [2022-07-19 16:45:37,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:37,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:45:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:45:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:45:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:45:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:45:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:45:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:45:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 16:45:38,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:38,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917570439] [2022-07-19 16:45:38,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917570439] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:38,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707606054] [2022-07-19 16:45:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:38,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:38,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:38,342 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) [2022-07-19 16:45:38,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-19 16:45:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:38,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 16:45:38,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 16:45:38,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:38,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707606054] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:38,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:38,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 16 [2022-07-19 16:45:38,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379401790] [2022-07-19 16:45:38,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:38,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:45:38,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:38,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:45:38,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:45:38,626 INFO L87 Difference]: Start difference. First operand 658 states and 1050 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:45:38,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:38,665 INFO L93 Difference]: Finished difference Result 1244 states and 2013 transitions. [2022-07-19 16:45:38,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:45:38,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 172 [2022-07-19 16:45:38,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:38,669 INFO L225 Difference]: With dead ends: 1244 [2022-07-19 16:45:38,669 INFO L226 Difference]: Without dead ends: 618 [2022-07-19 16:45:38,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-07-19 16:45:38,672 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 13 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:38,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2674 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:45:38,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2022-07-19 16:45:38,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2022-07-19 16:45:38,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 491 states have (on average 1.6089613034623218) internal successors, (790), 510 states have internal predecessors, (790), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2022-07-19 16:45:38,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 983 transitions. [2022-07-19 16:45:38,691 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 983 transitions. Word has length 172 [2022-07-19 16:45:38,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:38,691 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 983 transitions. [2022-07-19 16:45:38,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:45:38,691 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 983 transitions. [2022-07-19 16:45:38,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-19 16:45:38,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:38,694 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:38,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:38,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-19 16:45:38,916 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:38,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:38,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1965948772, now seen corresponding path program 1 times [2022-07-19 16:45:38,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:38,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820087950] [2022-07-19 16:45:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:38,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:45:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 16:45:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:45:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:45:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:45:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:45:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:45:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-19 16:45:39,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:39,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820087950] [2022-07-19 16:45:39,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820087950] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:39,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640916893] [2022-07-19 16:45:39,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:39,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:39,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:39,324 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) [2022-07-19 16:45:39,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-19 16:45:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:39,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 16:45:39,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 16:45:39,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:39,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640916893] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:39,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:39,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2022-07-19 16:45:39,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020521532] [2022-07-19 16:45:39,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:39,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:45:39,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:39,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:45:39,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-19 16:45:39,640 INFO L87 Difference]: Start difference. First operand 618 states and 983 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:45:39,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:39,698 INFO L93 Difference]: Finished difference Result 1205 states and 1934 transitions. [2022-07-19 16:45:39,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 16:45:39,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 173 [2022-07-19 16:45:39,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:39,702 INFO L225 Difference]: With dead ends: 1205 [2022-07-19 16:45:39,703 INFO L226 Difference]: Without dead ends: 636 [2022-07-19 16:45:39,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:45:39,720 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 36 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:39,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2602 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:45:39,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-07-19 16:45:39,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 621. [2022-07-19 16:45:39,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 494 states have (on average 1.6072874493927125) internal successors, (794), 513 states have internal predecessors, (794), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2022-07-19 16:45:39,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 987 transitions. [2022-07-19 16:45:39,741 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 987 transitions. Word has length 173 [2022-07-19 16:45:39,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:39,741 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 987 transitions. [2022-07-19 16:45:39,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:45:39,742 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 987 transitions. [2022-07-19 16:45:39,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-19 16:45:39,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:39,744 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:39,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:39,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-19 16:45:39,970 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:39,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:39,970 INFO L85 PathProgramCache]: Analyzing trace with hash 661057393, now seen corresponding path program 1 times [2022-07-19 16:45:39,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:39,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626294835] [2022-07-19 16:45:39,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:39,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:45:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 16:45:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:45:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:45:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:45:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:45:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:45:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:40,276 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 16:45:40,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:40,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626294835] [2022-07-19 16:45:40,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626294835] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:40,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:45:40,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:45:40,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997144397] [2022-07-19 16:45:40,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:40,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:45:40,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:40,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:45:40,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:45:40,278 INFO L87 Difference]: Start difference. First operand 621 states and 987 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:45:45,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:45,022 INFO L93 Difference]: Finished difference Result 1491 states and 2438 transitions. [2022-07-19 16:45:45,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 16:45:45,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 174 [2022-07-19 16:45:45,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:45,027 INFO L225 Difference]: With dead ends: 1491 [2022-07-19 16:45:45,027 INFO L226 Difference]: Without dead ends: 916 [2022-07-19 16:45:45,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-19 16:45:45,030 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 1007 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 2644 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 2910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 2644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:45,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 2281 Invalid, 2910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 2644 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-19 16:45:45,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2022-07-19 16:45:45,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 618. [2022-07-19 16:45:45,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 491 states have (on average 1.6069246435845215) internal successors, (789), 510 states have internal predecessors, (789), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2022-07-19 16:45:45,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 982 transitions. [2022-07-19 16:45:45,088 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 982 transitions. Word has length 174 [2022-07-19 16:45:45,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:45,088 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 982 transitions. [2022-07-19 16:45:45,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:45:45,089 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 982 transitions. [2022-07-19 16:45:45,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-19 16:45:45,091 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:45,091 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:45,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 16:45:45,092 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:45,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:45,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1150689779, now seen corresponding path program 1 times [2022-07-19 16:45:45,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:45,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966625144] [2022-07-19 16:45:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:45,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:45:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 16:45:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:45:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:45:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:45:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:45:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:45:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:45,416 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 16:45:45,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:45,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966625144] [2022-07-19 16:45:45,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966625144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:45,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:45:45,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:45:45,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123257416] [2022-07-19 16:45:45,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:45,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:45:45,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:45,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:45:45,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:45:45,418 INFO L87 Difference]: Start difference. First operand 618 states and 982 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:45:49,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:49,916 INFO L93 Difference]: Finished difference Result 1536 states and 2499 transitions. [2022-07-19 16:45:49,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:45:49,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 174 [2022-07-19 16:45:49,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:49,922 INFO L225 Difference]: With dead ends: 1536 [2022-07-19 16:45:49,922 INFO L226 Difference]: Without dead ends: 961 [2022-07-19 16:45:49,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:45:49,924 INFO L413 NwaCegarLoop]: 915 mSDtfsCounter, 1046 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 2722 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 2722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:49,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 2308 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 2722 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-19 16:45:49,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-07-19 16:45:49,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 622. [2022-07-19 16:45:49,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 495 states have (on average 1.6020202020202021) internal successors, (793), 514 states have internal predecessors, (793), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2022-07-19 16:45:49,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 986 transitions. [2022-07-19 16:45:49,986 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 986 transitions. Word has length 174 [2022-07-19 16:45:49,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:49,987 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 986 transitions. [2022-07-19 16:45:49,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:45:49,987 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 986 transitions. [2022-07-19 16:45:49,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-19 16:45:49,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:49,989 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:49,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 16:45:49,990 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:49,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:49,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1838219517, now seen corresponding path program 1 times [2022-07-19 16:45:49,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:49,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108372242] [2022-07-19 16:45:49,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:49,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:45:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 16:45:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:45:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:45:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:45:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:45:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:45:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:45:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 16:45:50,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:50,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108372242] [2022-07-19 16:45:50,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108372242] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:50,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935884489] [2022-07-19 16:45:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:50,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:50,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:50,476 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) [2022-07-19 16:45:50,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-07-19 16:45:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:50,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 1938 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-19 16:45:50,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-19 16:45:50,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:50,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935884489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:50,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:50,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 22 [2022-07-19 16:45:50,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132955109] [2022-07-19 16:45:50,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:50,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:45:50,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:50,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:45:50,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2022-07-19 16:45:50,986 INFO L87 Difference]: Start difference. First operand 622 states and 986 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-19 16:45:53,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:53,399 INFO L93 Difference]: Finished difference Result 1969 states and 3229 transitions. [2022-07-19 16:45:53,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 16:45:53,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 175 [2022-07-19 16:45:53,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:53,408 INFO L225 Difference]: With dead ends: 1969 [2022-07-19 16:45:53,409 INFO L226 Difference]: Without dead ends: 1466 [2022-07-19 16:45:53,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-07-19 16:45:53,411 INFO L413 NwaCegarLoop]: 1214 mSDtfsCounter, 2971 mSDsluCounter, 2313 mSDsCounter, 0 mSdLazyCounter, 3911 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 3527 SdHoareTripleChecker+Invalid, 4523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 3911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:53,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3527 Invalid, 4523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 3911 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 16:45:53,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2022-07-19 16:45:53,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1345. [2022-07-19 16:45:53,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1064 states have (on average 1.6409774436090225) internal successors, (1746), 1103 states have internal predecessors, (1746), 213 states have call successors, (213), 62 states have call predecessors, (213), 67 states have return successors, (232), 205 states have call predecessors, (232), 208 states have call successors, (232) [2022-07-19 16:45:53,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 2191 transitions. [2022-07-19 16:45:53,554 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 2191 transitions. Word has length 175 [2022-07-19 16:45:53,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:53,556 INFO L495 AbstractCegarLoop]: Abstraction has 1345 states and 2191 transitions. [2022-07-19 16:45:53,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-19 16:45:53,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 2191 transitions. [2022-07-19 16:45:53,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-19 16:45:53,558 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:53,559 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:53,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:53,783 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,SelfDestructingSolverStorable31 [2022-07-19 16:45:53,784 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:53,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:53,784 INFO L85 PathProgramCache]: Analyzing trace with hash 5244925, now seen corresponding path program 1 times [2022-07-19 16:45:53,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:53,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231562782] [2022-07-19 16:45:53,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:53,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:53,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:53,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:53,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:53,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:45:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:53,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:53,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:54,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 16:45:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:54,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:54,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:54,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:54,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:45:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:54,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:45:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:54,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:54,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:54,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:45:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:54,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:45:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:54,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:45:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:54,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 16:45:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:54,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 16:45:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:54,282 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 16:45:54,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:54,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231562782] [2022-07-19 16:45:54,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231562782] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:54,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614575286] [2022-07-19 16:45:54,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:54,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:54,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:54,284 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) [2022-07-19 16:45:54,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-07-19 16:45:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:54,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-19 16:45:54,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-19 16:45:54,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:54,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614575286] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:54,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:54,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2022-07-19 16:45:54,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056255515] [2022-07-19 16:45:54,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:54,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:45:54,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:54,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:45:54,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-07-19 16:45:54,782 INFO L87 Difference]: Start difference. First operand 1345 states and 2191 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-19 16:45:56,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:56,868 INFO L93 Difference]: Finished difference Result 2830 states and 4656 transitions. [2022-07-19 16:45:56,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 16:45:56,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 177 [2022-07-19 16:45:56,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:56,877 INFO L225 Difference]: With dead ends: 2830 [2022-07-19 16:45:56,877 INFO L226 Difference]: Without dead ends: 1604 [2022-07-19 16:45:56,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=828, Unknown=0, NotChecked=0, Total=930 [2022-07-19 16:45:56,883 INFO L413 NwaCegarLoop]: 1016 mSDtfsCounter, 2117 mSDsluCounter, 1563 mSDsCounter, 0 mSdLazyCounter, 3287 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 3783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 3287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:56,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2199 Valid, 2579 Invalid, 3783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 3287 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 16:45:56,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2022-07-19 16:45:57,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1416. [2022-07-19 16:45:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1116 states have (on average 1.6290322580645162) internal successors, (1818), 1161 states have internal predecessors, (1818), 221 states have call successors, (221), 67 states have call predecessors, (221), 78 states have return successors, (258), 213 states have call predecessors, (258), 216 states have call successors, (258) [2022-07-19 16:45:57,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 2297 transitions. [2022-07-19 16:45:57,047 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 2297 transitions. Word has length 177 [2022-07-19 16:45:57,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:57,048 INFO L495 AbstractCegarLoop]: Abstraction has 1416 states and 2297 transitions. [2022-07-19 16:45:57,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-19 16:45:57,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 2297 transitions. [2022-07-19 16:45:57,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-19 16:45:57,051 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:57,051 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:57,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:57,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:57,277 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:57,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:57,277 INFO L85 PathProgramCache]: Analyzing trace with hash 354987505, now seen corresponding path program 1 times [2022-07-19 16:45:57,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:57,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551943777] [2022-07-19 16:45:57,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:57,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:45:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 16:45:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:45:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:45:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:45:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:45:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:45:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:45:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:45:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 16:45:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-19 16:45:57,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:57,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551943777] [2022-07-19 16:45:57,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551943777] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:57,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782368299] [2022-07-19 16:45:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:57,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:57,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:57,728 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) [2022-07-19 16:45:57,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-07-19 16:45:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:58,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 16:45:58,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:58,068 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-19 16:45:58,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:58,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782368299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:58,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:58,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2022-07-19 16:45:58,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209973790] [2022-07-19 16:45:58,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:58,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:45:58,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:58,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:45:58,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-19 16:45:58,071 INFO L87 Difference]: Start difference. First operand 1416 states and 2297 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-19 16:45:58,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:58,272 INFO L93 Difference]: Finished difference Result 1515 states and 2442 transitions. [2022-07-19 16:45:58,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:45:58,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 182 [2022-07-19 16:45:58,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:58,281 INFO L225 Difference]: With dead ends: 1515 [2022-07-19 16:45:58,281 INFO L226 Difference]: Without dead ends: 1500 [2022-07-19 16:45:58,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-07-19 16:45:58,282 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 67 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3648 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:58,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 3648 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:45:58,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-07-19 16:45:58,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1422. [2022-07-19 16:45:58,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1122 states have (on average 1.625668449197861) internal successors, (1824), 1167 states have internal predecessors, (1824), 221 states have call successors, (221), 67 states have call predecessors, (221), 78 states have return successors, (258), 213 states have call predecessors, (258), 216 states have call successors, (258) [2022-07-19 16:45:58,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2303 transitions. [2022-07-19 16:45:58,432 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2303 transitions. Word has length 182 [2022-07-19 16:45:58,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:58,432 INFO L495 AbstractCegarLoop]: Abstraction has 1422 states and 2303 transitions. [2022-07-19 16:45:58,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-19 16:45:58,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2303 transitions. [2022-07-19 16:45:58,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-07-19 16:45:58,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:58,436 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:58,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-07-19 16:45:58,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:58,660 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:45:58,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:45:58,660 INFO L85 PathProgramCache]: Analyzing trace with hash 488834352, now seen corresponding path program 1 times [2022-07-19 16:45:58,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:45:58,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288941204] [2022-07-19 16:45:58,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:58,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:45:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:58,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:45:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:58,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:58,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:45:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:58,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:45:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:58,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:58,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:45:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:58,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 16:45:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:45:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:45:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:45:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:45:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:45:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:45:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:45:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 16:45:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 16:45:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:45:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 16:45:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:45:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:45:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:45:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:45:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 16:45:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 16:45:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-19 16:45:59,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:45:59,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288941204] [2022-07-19 16:45:59,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288941204] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:45:59,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836031919] [2022-07-19 16:45:59,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:45:59,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:45:59,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:45:59,220 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) [2022-07-19 16:45:59,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-07-19 16:45:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:45:59,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 2422 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:45:59,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:45:59,646 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-07-19 16:45:59,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:45:59,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836031919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:45:59,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:45:59,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [18] total 19 [2022-07-19 16:45:59,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864516945] [2022-07-19 16:45:59,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:45:59,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 16:45:59,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:45:59,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 16:45:59,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:45:59,649 INFO L87 Difference]: Start difference. First operand 1422 states and 2303 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-19 16:45:59,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:45:59,795 INFO L93 Difference]: Finished difference Result 2709 states and 4434 transitions. [2022-07-19 16:45:59,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 16:45:59,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 275 [2022-07-19 16:45:59,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:45:59,802 INFO L225 Difference]: With dead ends: 2709 [2022-07-19 16:45:59,803 INFO L226 Difference]: Without dead ends: 1406 [2022-07-19 16:45:59,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:45:59,807 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 867 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:45:59,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 877 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:45:59,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2022-07-19 16:45:59,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1406. [2022-07-19 16:45:59,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1112 states have (on average 1.6214028776978417) internal successors, (1803), 1156 states have internal predecessors, (1803), 215 states have call successors, (215), 67 states have call predecessors, (215), 78 states have return successors, (253), 208 states have call predecessors, (253), 211 states have call successors, (253) [2022-07-19 16:45:59,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 2271 transitions. [2022-07-19 16:45:59,952 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 2271 transitions. Word has length 275 [2022-07-19 16:45:59,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:45:59,952 INFO L495 AbstractCegarLoop]: Abstraction has 1406 states and 2271 transitions. [2022-07-19 16:45:59,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-19 16:45:59,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 2271 transitions. [2022-07-19 16:45:59,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-07-19 16:45:59,956 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:45:59,957 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:45:59,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-07-19 16:46:00,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-19 16:46:00,182 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:46:00,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:46:00,183 INFO L85 PathProgramCache]: Analyzing trace with hash -259599323, now seen corresponding path program 1 times [2022-07-19 16:46:00,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:46:00,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911493111] [2022-07-19 16:46:00,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:46:00,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:46:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:46:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:46:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:46:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:46:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 16:46:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:46:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:46:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:46:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:46:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:46:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 16:46:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 16:46:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 16:46:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:46:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:46:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 16:46:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-19 16:46:00,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:46:00,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911493111] [2022-07-19 16:46:00,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911493111] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:46:00,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576688135] [2022-07-19 16:46:00,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:46:00,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:46:00,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:46:00,779 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:46:00,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-07-19 16:46:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:01,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 2409 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:46:01,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:46:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 33 proven. 88 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-19 16:46:01,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 16:46:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-07-19 16:46:01,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576688135] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 16:46:01,708 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 16:46:01,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5, 5] total 22 [2022-07-19 16:46:01,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133258047] [2022-07-19 16:46:01,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 16:46:01,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 16:46:01,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:46:01,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 16:46:01,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2022-07-19 16:46:01,711 INFO L87 Difference]: Start difference. First operand 1406 states and 2271 transitions. Second operand has 22 states, 22 states have (on average 12.363636363636363) internal successors, (272), 16 states have internal predecessors, (272), 9 states have call successors, (58), 8 states have call predecessors, (58), 10 states have return successors, (58), 13 states have call predecessors, (58), 9 states have call successors, (58) [2022-07-19 16:46:39,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:46:39,457 INFO L93 Difference]: Finished difference Result 10671 states and 19050 transitions. [2022-07-19 16:46:39,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-07-19 16:46:39,458 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 12.363636363636363) internal successors, (272), 16 states have internal predecessors, (272), 9 states have call successors, (58), 8 states have call predecessors, (58), 10 states have return successors, (58), 13 states have call predecessors, (58), 9 states have call successors, (58) Word has length 273 [2022-07-19 16:46:39,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:46:39,513 INFO L225 Difference]: With dead ends: 10671 [2022-07-19 16:46:39,513 INFO L226 Difference]: Without dead ends: 9384 [2022-07-19 16:46:39,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 630 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5957 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=2045, Invalid=14211, Unknown=0, NotChecked=0, Total=16256 [2022-07-19 16:46:39,530 INFO L413 NwaCegarLoop]: 2440 mSDtfsCounter, 13812 mSDsluCounter, 16217 mSDsCounter, 0 mSdLazyCounter, 39814 mSolverCounterSat, 7739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13818 SdHoareTripleChecker+Valid, 18657 SdHoareTripleChecker+Invalid, 47553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7739 IncrementalHoareTripleChecker+Valid, 39814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:46:39,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13818 Valid, 18657 Invalid, 47553 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7739 Valid, 39814 Invalid, 0 Unknown, 0 Unchecked, 26.5s Time] [2022-07-19 16:46:39,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9384 states. [2022-07-19 16:46:40,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9384 to 5304. [2022-07-19 16:46:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5304 states, 4115 states have (on average 1.5939246658566222) internal successors, (6559), 4293 states have internal predecessors, (6559), 851 states have call successors, (851), 220 states have call predecessors, (851), 337 states have return successors, (1289), 848 states have call predecessors, (1289), 847 states have call successors, (1289) [2022-07-19 16:46:40,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5304 states to 5304 states and 8699 transitions. [2022-07-19 16:46:40,308 INFO L78 Accepts]: Start accepts. Automaton has 5304 states and 8699 transitions. Word has length 273 [2022-07-19 16:46:40,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:46:40,308 INFO L495 AbstractCegarLoop]: Abstraction has 5304 states and 8699 transitions. [2022-07-19 16:46:40,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 12.363636363636363) internal successors, (272), 16 states have internal predecessors, (272), 9 states have call successors, (58), 8 states have call predecessors, (58), 10 states have return successors, (58), 13 states have call predecessors, (58), 9 states have call successors, (58) [2022-07-19 16:46:40,309 INFO L276 IsEmpty]: Start isEmpty. Operand 5304 states and 8699 transitions. [2022-07-19 16:46:40,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-07-19 16:46:40,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:46:40,320 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 16:46:40,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-07-19 16:46:40,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-07-19 16:46:40,547 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:46:40,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:46:40,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2119363244, now seen corresponding path program 1 times [2022-07-19 16:46:40,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:46:40,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636249395] [2022-07-19 16:46:40,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:46:40,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:46:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:40,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:46:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:40,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:40,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:46:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:40,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:46:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:40,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:40,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:46:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:40,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 16:46:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:40,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:46:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:46:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:46:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:46:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:46:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 16:46:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 16:46:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:46:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 16:46:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:46:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 16:46:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-07-19 16:46:41,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:46:41,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636249395] [2022-07-19 16:46:41,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636249395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:46:41,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:46:41,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:46:41,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325242716] [2022-07-19 16:46:41,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:46:41,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:46:41,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:46:41,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:46:41,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:46:41,065 INFO L87 Difference]: Start difference. First operand 5304 states and 8699 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-19 16:46:46,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:46:46,091 INFO L93 Difference]: Finished difference Result 11536 states and 19243 transitions. [2022-07-19 16:46:46,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 16:46:46,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 278 [2022-07-19 16:46:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:46:46,121 INFO L225 Difference]: With dead ends: 11536 [2022-07-19 16:46:46,121 INFO L226 Difference]: Without dead ends: 6389 [2022-07-19 16:46:46,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:46:46,138 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 932 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 2741 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 2993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 2741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:46:46,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 2375 Invalid, 2993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 2741 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-19 16:46:46,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2022-07-19 16:46:46,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 5316. [2022-07-19 16:46:46,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 4127 states have (on average 1.5926823358371698) internal successors, (6573), 4305 states have internal predecessors, (6573), 851 states have call successors, (851), 220 states have call predecessors, (851), 337 states have return successors, (1289), 848 states have call predecessors, (1289), 847 states have call successors, (1289) [2022-07-19 16:46:46,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 8713 transitions. [2022-07-19 16:46:46,857 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 8713 transitions. Word has length 278 [2022-07-19 16:46:46,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:46:46,858 INFO L495 AbstractCegarLoop]: Abstraction has 5316 states and 8713 transitions. [2022-07-19 16:46:46,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-19 16:46:46,858 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 8713 transitions. [2022-07-19 16:46:46,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-07-19 16:46:46,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:46:46,868 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 16:46:46,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-19 16:46:46,868 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:46:46,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:46:46,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1606690506, now seen corresponding path program 1 times [2022-07-19 16:46:46,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:46:46,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531346839] [2022-07-19 16:46:46,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:46:46,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:46:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:46:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:46:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:46:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:46:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 16:46:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:46:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:46:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:46:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:46:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:46:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 16:46:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 16:46:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:46:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 16:46:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:46:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 16:46:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:47,347 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-07-19 16:46:47,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:46:47,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531346839] [2022-07-19 16:46:47,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531346839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:46:47,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:46:47,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:46:47,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509067376] [2022-07-19 16:46:47,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:46:47,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:46:47,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:46:47,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:46:47,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:46:47,350 INFO L87 Difference]: Start difference. First operand 5316 states and 8713 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-19 16:46:52,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:46:52,312 INFO L93 Difference]: Finished difference Result 11743 states and 19526 transitions. [2022-07-19 16:46:52,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:46:52,312 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 278 [2022-07-19 16:46:52,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:46:52,342 INFO L225 Difference]: With dead ends: 11743 [2022-07-19 16:46:52,343 INFO L226 Difference]: Without dead ends: 6470 [2022-07-19 16:46:52,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:46:52,360 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 1423 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 2588 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 2588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-19 16:46:52,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 2275 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 2588 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-19 16:46:52,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6470 states. [2022-07-19 16:46:53,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6470 to 5326. [2022-07-19 16:46:53,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5326 states, 4137 states have (on average 1.591007976794779) internal successors, (6582), 4315 states have internal predecessors, (6582), 851 states have call successors, (851), 220 states have call predecessors, (851), 337 states have return successors, (1289), 848 states have call predecessors, (1289), 847 states have call successors, (1289) [2022-07-19 16:46:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5326 states to 5326 states and 8722 transitions. [2022-07-19 16:46:53,105 INFO L78 Accepts]: Start accepts. Automaton has 5326 states and 8722 transitions. Word has length 278 [2022-07-19 16:46:53,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:46:53,105 INFO L495 AbstractCegarLoop]: Abstraction has 5326 states and 8722 transitions. [2022-07-19 16:46:53,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-19 16:46:53,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5326 states and 8722 transitions. [2022-07-19 16:46:53,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-07-19 16:46:53,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:46:53,114 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 16:46:53,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-19 16:46:53,114 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:46:53,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:46:53,115 INFO L85 PathProgramCache]: Analyzing trace with hash -847728197, now seen corresponding path program 1 times [2022-07-19 16:46:53,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:46:53,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783879851] [2022-07-19 16:46:53,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:46:53,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:46:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:46:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:46:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:46:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:46:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 16:46:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:46:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:46:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:46:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:46:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:46:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 16:46:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 16:46:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:46:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 16:46:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:46:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 16:46:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:53,522 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-07-19 16:46:53,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:46:53,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783879851] [2022-07-19 16:46:53,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783879851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:46:53,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:46:53,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:46:53,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133674736] [2022-07-19 16:46:53,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:46:53,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:46:53,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:46:53,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:46:53,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:46:53,524 INFO L87 Difference]: Start difference. First operand 5326 states and 8722 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-19 16:46:58,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:46:58,150 INFO L93 Difference]: Finished difference Result 11763 states and 19538 transitions. [2022-07-19 16:46:58,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:46:58,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 279 [2022-07-19 16:46:58,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:46:58,175 INFO L225 Difference]: With dead ends: 11763 [2022-07-19 16:46:58,175 INFO L226 Difference]: Without dead ends: 6480 [2022-07-19 16:46:58,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:46:58,189 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 1452 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 2835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:46:58,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 2250 Invalid, 2835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-19 16:46:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6480 states. [2022-07-19 16:46:59,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6480 to 5338. [2022-07-19 16:46:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 4149 states have (on average 1.589057604241986) internal successors, (6593), 4327 states have internal predecessors, (6593), 851 states have call successors, (851), 220 states have call predecessors, (851), 337 states have return successors, (1289), 848 states have call predecessors, (1289), 847 states have call successors, (1289) [2022-07-19 16:46:59,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 8733 transitions. [2022-07-19 16:46:59,038 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 8733 transitions. Word has length 279 [2022-07-19 16:46:59,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:46:59,038 INFO L495 AbstractCegarLoop]: Abstraction has 5338 states and 8733 transitions. [2022-07-19 16:46:59,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-19 16:46:59,038 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 8733 transitions. [2022-07-19 16:46:59,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-07-19 16:46:59,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:46:59,045 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 16:46:59,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-19 16:46:59,045 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:46:59,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:46:59,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1711866724, now seen corresponding path program 1 times [2022-07-19 16:46:59,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:46:59,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418767937] [2022-07-19 16:46:59,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:46:59,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:46:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:46:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:46:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:46:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:46:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 16:46:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:46:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:46:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:46:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:46:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:46:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 16:46:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 16:46:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:46:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:46:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:46:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 16:46:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:46:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 16:46:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:46:59,418 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-07-19 16:46:59,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:46:59,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418767937] [2022-07-19 16:46:59,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418767937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:46:59,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:46:59,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:46:59,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741510359] [2022-07-19 16:46:59,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:46:59,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:46:59,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:46:59,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:46:59,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:46:59,420 INFO L87 Difference]: Start difference. First operand 5338 states and 8733 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-19 16:47:04,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:47:04,909 INFO L93 Difference]: Finished difference Result 11359 states and 18934 transitions. [2022-07-19 16:47:04,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:47:04,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 279 [2022-07-19 16:47:04,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:47:04,935 INFO L225 Difference]: With dead ends: 11359 [2022-07-19 16:47:04,935 INFO L226 Difference]: Without dead ends: 6315 [2022-07-19 16:47:04,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:47:04,949 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 992 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 2673 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:47:04,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 2335 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2673 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-19 16:47:04,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6315 states. [2022-07-19 16:47:05,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6315 to 5258. [2022-07-19 16:47:05,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5258 states, 4077 states have (on average 1.5938189845474613) internal successors, (6498), 4254 states have internal predecessors, (6498), 848 states have call successors, (848), 217 states have call predecessors, (848), 332 states have return successors, (1284), 844 states have call predecessors, (1284), 844 states have call successors, (1284) [2022-07-19 16:47:05,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5258 states to 5258 states and 8630 transitions. [2022-07-19 16:47:05,651 INFO L78 Accepts]: Start accepts. Automaton has 5258 states and 8630 transitions. Word has length 279 [2022-07-19 16:47:05,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:47:05,652 INFO L495 AbstractCegarLoop]: Abstraction has 5258 states and 8630 transitions. [2022-07-19 16:47:05,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-19 16:47:05,652 INFO L276 IsEmpty]: Start isEmpty. Operand 5258 states and 8630 transitions. [2022-07-19 16:47:05,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-07-19 16:47:05,661 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:47:05,661 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:47:05,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-19 16:47:05,661 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:47:05,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:47:05,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1091726320, now seen corresponding path program 1 times [2022-07-19 16:47:05,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:47:05,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384756926] [2022-07-19 16:47:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:47:05,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:47:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:05,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:47:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:05,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:05,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:47:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:05,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:47:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:05,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:05,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:47:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:05,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 16:47:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:05,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:05,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:05,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:05,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:47:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:05,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:47:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:05,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:05,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:05,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:47:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:06,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:47:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:06,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:47:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:06,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:47:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:06,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:47:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:06,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 16:47:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:06,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 16:47:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:06,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:06,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:06,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:47:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:06,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:06,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:47:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:06,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:06,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:06,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:47:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:06,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 16:47:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:06,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:47:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:06,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 16:47:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:06,077 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-07-19 16:47:06,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:47:06,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384756926] [2022-07-19 16:47:06,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384756926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:47:06,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:47:06,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:47:06,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780620752] [2022-07-19 16:47:06,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:47:06,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:47:06,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:47:06,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:47:06,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:47:06,079 INFO L87 Difference]: Start difference. First operand 5258 states and 8630 transitions. Second operand has 10 states, 9 states have (on average 16.0) internal successors, (144), 6 states have internal predecessors, (144), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-19 16:47:11,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:47:11,742 INFO L93 Difference]: Finished difference Result 8188 states and 13517 transitions. [2022-07-19 16:47:11,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:47:11,743 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 16.0) internal successors, (144), 6 states have internal predecessors, (144), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 282 [2022-07-19 16:47:11,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:47:11,752 INFO L225 Difference]: With dead ends: 8188 [2022-07-19 16:47:11,752 INFO L226 Difference]: Without dead ends: 3023 [2022-07-19 16:47:11,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:47:11,760 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 1385 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 5127 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 5522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 5127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:47:11,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 3533 Invalid, 5522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 5127 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-19 16:47:11,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2022-07-19 16:47:12,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 2503. [2022-07-19 16:47:12,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 1964 states have (on average 1.5941955193482689) internal successors, (3131), 2048 states have internal predecessors, (3131), 377 states have call successors, (377), 112 states have call predecessors, (377), 161 states have return successors, (550), 366 states have call predecessors, (550), 373 states have call successors, (550) [2022-07-19 16:47:12,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4058 transitions. [2022-07-19 16:47:12,066 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4058 transitions. Word has length 282 [2022-07-19 16:47:12,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:47:12,066 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 4058 transitions. [2022-07-19 16:47:12,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 16.0) internal successors, (144), 6 states have internal predecessors, (144), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-19 16:47:12,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4058 transitions. [2022-07-19 16:47:12,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-07-19 16:47:12,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:47:12,069 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 16:47:12,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-19 16:47:12,069 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:47:12,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:47:12,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1666593273, now seen corresponding path program 1 times [2022-07-19 16:47:12,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:47:12,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905309961] [2022-07-19 16:47:12,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:47:12,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:47:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:47:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:47:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:47:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:47:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 16:47:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:47:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:47:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:47:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 16:47:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:47:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 16:47:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 16:47:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 16:47:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 16:47:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:47:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:47:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:47:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:47:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 16:47:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:47:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 16:47:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-19 16:47:12,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:47:12,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905309961] [2022-07-19 16:47:12,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905309961] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:47:12,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133827892] [2022-07-19 16:47:12,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:47:12,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:47:12,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:47:12,533 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:47:12,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-07-19 16:47:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:47:12,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 2459 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-19 16:47:12,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:47:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-19 16:47:13,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 16:47:13,990 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 25 proven. 35 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-19 16:47:13,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133827892] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 16:47:13,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 16:47:13,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 11] total 29 [2022-07-19 16:47:13,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789733057] [2022-07-19 16:47:13,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 16:47:13,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-19 16:47:13,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:47:13,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-19 16:47:13,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2022-07-19 16:47:13,993 INFO L87 Difference]: Start difference. First operand 2503 states and 4058 transitions. Second operand has 29 states, 29 states have (on average 11.724137931034482) internal successors, (340), 23 states have internal predecessors, (340), 12 states have call successors, (66), 9 states have call predecessors, (66), 15 states have return successors, (70), 18 states have call predecessors, (70), 12 states have call successors, (70) [2022-07-19 16:48:04,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:48:04,746 INFO L93 Difference]: Finished difference Result 14308 states and 25184 transitions. [2022-07-19 16:48:04,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-07-19 16:48:04,746 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 11.724137931034482) internal successors, (340), 23 states have internal predecessors, (340), 12 states have call successors, (66), 9 states have call predecessors, (66), 15 states have return successors, (70), 18 states have call predecessors, (70), 12 states have call successors, (70) Word has length 285 [2022-07-19 16:48:04,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:48:04,787 INFO L225 Difference]: With dead ends: 14308 [2022-07-19 16:48:04,788 INFO L226 Difference]: Without dead ends: 10985 [2022-07-19 16:48:04,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 714 SyntacticMatches, 2 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11436 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=4149, Invalid=25953, Unknown=0, NotChecked=0, Total=30102 [2022-07-19 16:48:04,816 INFO L413 NwaCegarLoop]: 1283 mSDtfsCounter, 19695 mSDsluCounter, 8111 mSDsCounter, 0 mSdLazyCounter, 30318 mSolverCounterSat, 10189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19695 SdHoareTripleChecker+Valid, 9394 SdHoareTripleChecker+Invalid, 40507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 10189 IncrementalHoareTripleChecker+Valid, 30318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:48:04,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19695 Valid, 9394 Invalid, 40507 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [10189 Valid, 30318 Invalid, 0 Unknown, 0 Unchecked, 26.9s Time] [2022-07-19 16:48:04,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10985 states. [2022-07-19 16:48:05,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10985 to 8881. [2022-07-19 16:48:05,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8881 states, 6886 states have (on average 1.5515538774324718) internal successors, (10684), 7184 states have internal predecessors, (10684), 1380 states have call successors, (1380), 456 states have call predecessors, (1380), 614 states have return successors, (2235), 1336 states have call predecessors, (2235), 1376 states have call successors, (2235) [2022-07-19 16:48:06,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8881 states to 8881 states and 14299 transitions. [2022-07-19 16:48:06,007 INFO L78 Accepts]: Start accepts. Automaton has 8881 states and 14299 transitions. Word has length 285 [2022-07-19 16:48:06,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:48:06,007 INFO L495 AbstractCegarLoop]: Abstraction has 8881 states and 14299 transitions. [2022-07-19 16:48:06,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 11.724137931034482) internal successors, (340), 23 states have internal predecessors, (340), 12 states have call successors, (66), 9 states have call predecessors, (66), 15 states have return successors, (70), 18 states have call predecessors, (70), 12 states have call successors, (70) [2022-07-19 16:48:06,008 INFO L276 IsEmpty]: Start isEmpty. Operand 8881 states and 14299 transitions. [2022-07-19 16:48:06,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-19 16:48:06,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:48:06,011 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:48:06,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-07-19 16:48:06,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-07-19 16:48:06,221 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:48:06,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:48:06,222 INFO L85 PathProgramCache]: Analyzing trace with hash -28578643, now seen corresponding path program 1 times [2022-07-19 16:48:06,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:48:06,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522071076] [2022-07-19 16:48:06,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:48:06,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:48:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:48:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:48:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:48:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:48:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 16:48:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:48:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:48:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:48:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:48:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:48:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:48:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 16:48:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 16:48:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 16:48:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 16:48:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 16:48:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 16:48:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-19 16:48:06,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:48:06,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522071076] [2022-07-19 16:48:06,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522071076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:48:06,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:48:06,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:48:06,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254138520] [2022-07-19 16:48:06,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:48:06,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:48:06,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:48:06,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:48:06,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:48:06,560 INFO L87 Difference]: Start difference. First operand 8881 states and 14299 transitions. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 2 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-19 16:48:13,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:48:13,735 INFO L93 Difference]: Finished difference Result 20538 states and 34497 transitions. [2022-07-19 16:48:13,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:48:13,736 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 2 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 238 [2022-07-19 16:48:13,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:48:13,775 INFO L225 Difference]: With dead ends: 20538 [2022-07-19 16:48:13,775 INFO L226 Difference]: Without dead ends: 11783 [2022-07-19 16:48:13,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 16:48:13,796 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 950 mSDsluCounter, 2310 mSDsCounter, 0 mSdLazyCounter, 4384 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 3227 SdHoareTripleChecker+Invalid, 4681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 4384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:48:13,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 3227 Invalid, 4681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 4384 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-19 16:48:13,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11783 states. [2022-07-19 16:48:14,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11783 to 8941. [2022-07-19 16:48:14,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8941 states, 6956 states have (on average 1.5425531914893618) internal successors, (10730), 7223 states have internal predecessors, (10730), 1356 states have call successors, (1356), 456 states have call predecessors, (1356), 628 states have return successors, (2262), 1357 states have call predecessors, (2262), 1352 states have call successors, (2262) [2022-07-19 16:48:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8941 states to 8941 states and 14348 transitions. [2022-07-19 16:48:15,027 INFO L78 Accepts]: Start accepts. Automaton has 8941 states and 14348 transitions. Word has length 238 [2022-07-19 16:48:15,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:48:15,028 INFO L495 AbstractCegarLoop]: Abstraction has 8941 states and 14348 transitions. [2022-07-19 16:48:15,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 2 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-19 16:48:15,028 INFO L276 IsEmpty]: Start isEmpty. Operand 8941 states and 14348 transitions. [2022-07-19 16:48:15,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-07-19 16:48:15,032 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:48:15,033 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:48:15,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-19 16:48:15,033 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:48:15,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:48:15,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1303563419, now seen corresponding path program 1 times [2022-07-19 16:48:15,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:48:15,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199544150] [2022-07-19 16:48:15,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:48:15,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:48:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:48:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:48:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:48:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:48:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 16:48:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:48:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:48:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:48:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 16:48:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:48:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:48:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 16:48:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 16:48:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 16:48:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 16:48:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 16:48:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-19 16:48:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-19 16:48:15,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:48:15,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199544150] [2022-07-19 16:48:15,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199544150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:48:15,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:48:15,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:48:15,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608623244] [2022-07-19 16:48:15,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:48:15,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:48:15,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:48:15,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:48:15,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:48:15,399 INFO L87 Difference]: Start difference. First operand 8941 states and 14348 transitions. Second operand has 10 states, 9 states have (on average 16.22222222222222) internal successors, (146), 6 states have internal predecessors, (146), 4 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-19 16:48:21,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:48:21,719 INFO L93 Difference]: Finished difference Result 20193 states and 33695 transitions. [2022-07-19 16:48:21,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:48:21,719 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 16.22222222222222) internal successors, (146), 6 states have internal predecessors, (146), 4 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 245 [2022-07-19 16:48:21,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:48:21,775 INFO L225 Difference]: With dead ends: 20193 [2022-07-19 16:48:21,775 INFO L226 Difference]: Without dead ends: 10574 [2022-07-19 16:48:21,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:48:21,814 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 2535 mSDsluCounter, 2521 mSDsCounter, 0 mSdLazyCounter, 4241 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2598 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 4880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 4241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:48:21,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2598 Valid, 3404 Invalid, 4880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 4241 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-19 16:48:21,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10574 states. [2022-07-19 16:48:23,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10574 to 8941. [2022-07-19 16:48:23,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8941 states, 6956 states have (on average 1.5278895917193789) internal successors, (10628), 7223 states have internal predecessors, (10628), 1356 states have call successors, (1356), 456 states have call predecessors, (1356), 628 states have return successors, (2262), 1357 states have call predecessors, (2262), 1352 states have call successors, (2262) [2022-07-19 16:48:23,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8941 states to 8941 states and 14246 transitions. [2022-07-19 16:48:23,078 INFO L78 Accepts]: Start accepts. Automaton has 8941 states and 14246 transitions. Word has length 245 [2022-07-19 16:48:23,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:48:23,079 INFO L495 AbstractCegarLoop]: Abstraction has 8941 states and 14246 transitions. [2022-07-19 16:48:23,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 16.22222222222222) internal successors, (146), 6 states have internal predecessors, (146), 4 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-19 16:48:23,079 INFO L276 IsEmpty]: Start isEmpty. Operand 8941 states and 14246 transitions. [2022-07-19 16:48:23,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-07-19 16:48:23,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:48:23,084 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:48:23,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-19 16:48:23,084 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:48:23,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:48:23,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1902906060, now seen corresponding path program 1 times [2022-07-19 16:48:23,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:48:23,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876881751] [2022-07-19 16:48:23,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:48:23,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:48:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:48:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:48:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:48:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:48:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 16:48:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:48:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:48:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:48:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:48:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:48:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 16:48:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:48:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 16:48:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 16:48:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 16:48:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 16:48:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 16:48:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 16:48:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-19 16:48:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-19 16:48:23,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:48:23,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876881751] [2022-07-19 16:48:23,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876881751] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:48:23,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436008973] [2022-07-19 16:48:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:48:23,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:48:23,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:48:23,500 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:48:23,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-07-19 16:48:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:48:23,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 2137 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-19 16:48:23,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:48:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 109 proven. 9 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-19 16:48:23,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 16:48:24,512 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-07-19 16:48:24,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436008973] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 16:48:24,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 16:48:24,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 25 [2022-07-19 16:48:24,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606551682] [2022-07-19 16:48:24,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 16:48:24,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 16:48:24,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:48:24,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 16:48:24,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-07-19 16:48:24,515 INFO L87 Difference]: Start difference. First operand 8941 states and 14246 transitions. Second operand has 25 states, 25 states have (on average 12.2) internal successors, (305), 18 states have internal predecessors, (305), 9 states have call successors, (60), 8 states have call predecessors, (60), 14 states have return successors, (59), 14 states have call predecessors, (59), 9 states have call successors, (59)