./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_product17.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 09d600be73ca435c113b9c0e8e087d96a910d62ea2126c235d6963c00b3a91c2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 16:59:03,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 16:59:03,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 16:59:03,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 16:59:03,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 16:59:03,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 16:59:03,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 16:59:03,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 16:59:03,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 16:59:03,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 16:59:03,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 16:59:03,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 16:59:03,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 16:59:03,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 16:59:03,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 16:59:03,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 16:59:03,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 16:59:03,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 16:59:03,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 16:59:03,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 16:59:03,373 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 16:59:03,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 16:59:03,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 16:59:03,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 16:59:03,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 16:59:03,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 16:59:03,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 16:59:03,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 16:59:03,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 16:59:03,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 16:59:03,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 16:59:03,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 16:59:03,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 16:59:03,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 16:59:03,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 16:59:03,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 16:59:03,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 16:59:03,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 16:59:03,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 16:59:03,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 16:59:03,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 16:59:03,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 16:59:03,397 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 16:59:03,428 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 16:59:03,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 16:59:03,429 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 16:59:03,429 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 16:59:03,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 16:59:03,430 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 16:59:03,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 16:59:03,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 16:59:03,431 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 16:59:03,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 16:59:03,432 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 16:59:03,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 16:59:03,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 16:59:03,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 16:59:03,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 16:59:03,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 16:59:03,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 16:59:03,433 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 16:59:03,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 16:59:03,434 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 16:59:03,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 16:59:03,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 16:59:03,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 16:59:03,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 16:59:03,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:59:03,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 16:59:03,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 16:59:03,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 16:59:03,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 16:59:03,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 16:59:03,437 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 16:59:03,437 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 16:59:03,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 16:59:03,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09d600be73ca435c113b9c0e8e087d96a910d62ea2126c235d6963c00b3a91c2 [2022-07-22 16:59:03,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 16:59:03,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 16:59:03,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 16:59:03,715 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 16:59:03,716 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 16:59:03,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c [2022-07-22 16:59:03,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f45593038/9ecaacc72dca4e45929cd37a4f505ee5/FLAG1579f8685 [2022-07-22 16:59:04,286 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 16:59:04,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product17.cil.c [2022-07-22 16:59:04,307 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f45593038/9ecaacc72dca4e45929cd37a4f505ee5/FLAG1579f8685 [2022-07-22 16:59:04,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f45593038/9ecaacc72dca4e45929cd37a4f505ee5 [2022-07-22 16:59:04,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 16:59:04,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 16:59:04,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 16:59:04,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 16:59:04,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 16:59:04,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:59:04" (1/1) ... [2022-07-22 16:59:04,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f0f19f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:59:04, skipping insertion in model container [2022-07-22 16:59:04,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:59:04" (1/1) ... [2022-07-22 16:59:04,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 16:59:04,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 16:59:04,948 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_product17.cil.c[27470,27483] [2022-07-22 16:59:05,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:59:05,111 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 16:59:05,161 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_product17.cil.c[27470,27483] [2022-07-22 16:59:05,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:59:05,237 INFO L208 MainTranslator]: Completed translation [2022-07-22 16:59:05,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:59:05 WrapperNode [2022-07-22 16:59:05,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 16:59:05,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 16:59:05,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 16:59:05,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 16:59:05,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:59:05" (1/1) ... [2022-07-22 16:59:05,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:59:05" (1/1) ... [2022-07-22 16:59:05,331 INFO L137 Inliner]: procedures = 90, calls = 333, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 791 [2022-07-22 16:59:05,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 16:59:05,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 16:59:05,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 16:59:05,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 16:59:05,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:59:05" (1/1) ... [2022-07-22 16:59:05,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:59:05" (1/1) ... [2022-07-22 16:59:05,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:59:05" (1/1) ... [2022-07-22 16:59:05,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:59:05" (1/1) ... [2022-07-22 16:59:05,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:59:05" (1/1) ... [2022-07-22 16:59:05,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:59:05" (1/1) ... [2022-07-22 16:59:05,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:59:05" (1/1) ... [2022-07-22 16:59:05,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 16:59:05,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 16:59:05,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 16:59:05,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 16:59:05,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:59:05" (1/1) ... [2022-07-22 16:59:05,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:59:05,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:05,444 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) [2022-07-22 16:59:05,475 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 [2022-07-22 16:59:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-07-22 16:59:05,490 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-07-22 16:59:05,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 16:59:05,491 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-22 16:59:05,491 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-22 16:59:05,491 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-22 16:59:05,491 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-22 16:59:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-22 16:59:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-22 16:59:05,493 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-22 16:59:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-22 16:59:05,493 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-22 16:59:05,493 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-22 16:59:05,493 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-22 16:59:05,494 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-22 16:59:05,494 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-22 16:59:05,494 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-22 16:59:05,517 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-22 16:59:05,517 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-22 16:59:05,517 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-22 16:59:05,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-22 16:59:05,517 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-22 16:59:05,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-22 16:59:05,517 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-22 16:59:05,517 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-22 16:59:05,517 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-22 16:59:05,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-22 16:59:05,518 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-22 16:59:05,518 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-22 16:59:05,518 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-22 16:59:05,518 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-22 16:59:05,518 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-22 16:59:05,518 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-22 16:59:05,518 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-22 16:59:05,518 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-22 16:59:05,518 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-22 16:59:05,518 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-22 16:59:05,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 16:59:05,518 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-22 16:59:05,518 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-22 16:59:05,519 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-22 16:59:05,519 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-22 16:59:05,519 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-22 16:59:05,519 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-22 16:59:05,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 16:59:05,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 16:59:05,519 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-22 16:59:05,519 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-22 16:59:05,722 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 16:59:05,724 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 16:59:06,568 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 16:59:06,592 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 16:59:06,593 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 16:59:06,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:59:06 BoogieIcfgContainer [2022-07-22 16:59:06,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 16:59:06,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 16:59:06,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 16:59:06,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 16:59:06,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 04:59:04" (1/3) ... [2022-07-22 16:59:06,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b32d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:59:06, skipping insertion in model container [2022-07-22 16:59:06,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:59:05" (2/3) ... [2022-07-22 16:59:06,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b32d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:59:06, skipping insertion in model container [2022-07-22 16:59:06,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:59:06" (3/3) ... [2022-07-22 16:59:06,609 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product17.cil.c [2022-07-22 16:59:06,621 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 16:59:06,622 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 16:59:06,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 16:59:06,697 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@54b74ba9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@66917b1 [2022-07-22 16:59:06,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 16:59:06,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 539 states, 424 states have (on average 1.705188679245283) internal successors, (723), 445 states have internal predecessors, (723), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2022-07-22 16:59:06,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-22 16:59:06,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:06,732 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:06,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:06,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:06,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1594208609, now seen corresponding path program 1 times [2022-07-22 16:59:06,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:06,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556661263] [2022-07-22 16:59:06,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:06,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:07,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:07,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:07,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:59:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:07,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:59:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:07,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:07,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:59:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:07,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 16:59:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:07,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:07,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:07,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:07,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:07,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:59:07,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:07,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556661263] [2022-07-22 16:59:07,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556661263] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:07,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986437518] [2022-07-22 16:59:07,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:07,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:07,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:07,607 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) [2022-07-22 16:59:07,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 16:59:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:07,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 16:59:07,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 16:59:07,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:07,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986437518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:07,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:07,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2022-07-22 16:59:07,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47531016] [2022-07-22 16:59:07,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:07,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 16:59:07,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:08,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 16:59:08,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:59:08,009 INFO L87 Difference]: Start difference. First operand has 539 states, 424 states have (on average 1.705188679245283) internal successors, (723), 445 states have internal predecessors, (723), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 16:59:08,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:08,062 INFO L93 Difference]: Finished difference Result 560 states and 935 transitions. [2022-07-22 16:59:08,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 16:59:08,064 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 97 [2022-07-22 16:59:08,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:08,086 INFO L225 Difference]: With dead ends: 560 [2022-07-22 16:59:08,087 INFO L226 Difference]: Without dead ends: 531 [2022-07-22 16:59:08,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:59:08,096 INFO L413 NwaCegarLoop]: 896 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, 896 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 [2022-07-22 16:59:08,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:59:08,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-07-22 16:59:08,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2022-07-22 16:59:08,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 418 states have (on average 1.7033492822966507) internal successors, (712), 437 states have internal predecessors, (712), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-07-22 16:59:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 889 transitions. [2022-07-22 16:59:08,209 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 889 transitions. Word has length 97 [2022-07-22 16:59:08,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:08,211 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 889 transitions. [2022-07-22 16:59:08,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 16:59:08,212 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 889 transitions. [2022-07-22 16:59:08,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-22 16:59:08,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:08,219 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:08,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:08,445 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 [2022-07-22 16:59:08,446 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:08,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:08,446 INFO L85 PathProgramCache]: Analyzing trace with hash -365707531, now seen corresponding path program 1 times [2022-07-22 16:59:08,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:08,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382350939] [2022-07-22 16:59:08,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:08,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:08,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:08,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:08,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:59:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:08,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 16:59:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:08,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:08,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 16:59:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:08,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 16:59:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:08,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:08,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:08,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:08,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:59:08,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:08,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382350939] [2022-07-22 16:59:08,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382350939] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:08,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590847241] [2022-07-22 16:59:08,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:08,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:08,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:08,969 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) [2022-07-22 16:59:08,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 16:59:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:59:09,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 16:59:09,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:09,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590847241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:09,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:09,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:59:09,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636095876] [2022-07-22 16:59:09,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:09,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:09,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:09,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:09,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:59:09,323 INFO L87 Difference]: Start difference. First operand 531 states and 889 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:09,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:09,397 INFO L93 Difference]: Finished difference Result 1053 states and 1770 transitions. [2022-07-22 16:59:09,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 16:59:09,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2022-07-22 16:59:09,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:09,403 INFO L225 Difference]: With dead ends: 1053 [2022-07-22 16:59:09,403 INFO L226 Difference]: Without dead ends: 531 [2022-07-22 16:59:09,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:59:09,408 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 14 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2618 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 [2022-07-22 16:59:09,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2618 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:59:09,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-07-22 16:59:09,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2022-07-22 16:59:09,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 418 states have (on average 1.700956937799043) internal successors, (711), 437 states have internal predecessors, (711), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-07-22 16:59:09,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 888 transitions. [2022-07-22 16:59:09,439 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 888 transitions. Word has length 99 [2022-07-22 16:59:09,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:09,441 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 888 transitions. [2022-07-22 16:59:09,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:09,441 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 888 transitions. [2022-07-22 16:59:09,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 16:59:09,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:09,446 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:09,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:09,659 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 [2022-07-22 16:59:09,660 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:09,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:09,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1062806691, now seen corresponding path program 1 times [2022-07-22 16:59:09,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:09,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293302800] [2022-07-22 16:59:09,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:09,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 16:59:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:09,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:10,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 16:59:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:10,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:10,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:10,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:10,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:59:10,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:10,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293302800] [2022-07-22 16:59:10,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293302800] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:10,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109007279] [2022-07-22 16:59:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:10,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:10,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:10,184 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) [2022-07-22 16:59:10,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 16:59:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:10,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 1779 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:59:10,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:10,518 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 16:59:10,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:10,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109007279] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:10,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:10,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:59:10,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961552069] [2022-07-22 16:59:10,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:10,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:10,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:10,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:10,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:59:10,521 INFO L87 Difference]: Start difference. First operand 531 states and 888 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:10,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:10,582 INFO L93 Difference]: Finished difference Result 1053 states and 1768 transitions. [2022-07-22 16:59:10,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 16:59:10,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2022-07-22 16:59:10,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:10,586 INFO L225 Difference]: With dead ends: 1053 [2022-07-22 16:59:10,586 INFO L226 Difference]: Without dead ends: 531 [2022-07-22 16:59:10,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:59:10,590 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 12 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2618 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 [2022-07-22 16:59:10,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2618 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:59:10,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-07-22 16:59:10,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2022-07-22 16:59:10,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 418 states have (on average 1.6985645933014355) internal successors, (710), 437 states have internal predecessors, (710), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-07-22 16:59:10,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 887 transitions. [2022-07-22 16:59:10,609 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 887 transitions. Word has length 101 [2022-07-22 16:59:10,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:10,609 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 887 transitions. [2022-07-22 16:59:10,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:10,610 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 887 transitions. [2022-07-22 16:59:10,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 16:59:10,613 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:10,613 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:10,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:10,827 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 [2022-07-22 16:59:10,828 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:10,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:10,828 INFO L85 PathProgramCache]: Analyzing trace with hash -706454475, now seen corresponding path program 1 times [2022-07-22 16:59:10,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:10,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003024346] [2022-07-22 16:59:10,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:10,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:10,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:10,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:10,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:10,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 16:59:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:10,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:11,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:11,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 16:59:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:11,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:11,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:11,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:11,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:59:11,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:11,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003024346] [2022-07-22 16:59:11,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003024346] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:11,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733120994] [2022-07-22 16:59:11,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:11,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:11,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:11,210 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) [2022-07-22 16:59:11,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 16:59:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:11,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:59:11,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 16:59:11,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:11,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733120994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:11,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:11,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:59:11,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552194677] [2022-07-22 16:59:11,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:11,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:11,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:11,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:11,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:59:11,564 INFO L87 Difference]: Start difference. First operand 531 states and 887 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:11,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:11,625 INFO L93 Difference]: Finished difference Result 1060 states and 1775 transitions. [2022-07-22 16:59:11,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:59:11,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2022-07-22 16:59:11,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:11,630 INFO L225 Difference]: With dead ends: 1060 [2022-07-22 16:59:11,630 INFO L226 Difference]: Without dead ends: 540 [2022-07-22 16:59:11,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:59:11,633 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 20 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2618 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 [2022-07-22 16:59:11,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2618 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:59:11,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-07-22 16:59:11,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2022-07-22 16:59:11,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 426 states have (on average 1.6948356807511737) internal successors, (722), 445 states have internal predecessors, (722), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-07-22 16:59:11,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 899 transitions. [2022-07-22 16:59:11,651 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 899 transitions. Word has length 103 [2022-07-22 16:59:11,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:11,657 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 899 transitions. [2022-07-22 16:59:11,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:11,657 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 899 transitions. [2022-07-22 16:59:11,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 16:59:11,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:11,662 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:11,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:11,875 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 [2022-07-22 16:59:11,875 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:11,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:11,876 INFO L85 PathProgramCache]: Analyzing trace with hash -480058764, now seen corresponding path program 1 times [2022-07-22 16:59:11,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:11,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227045561] [2022-07-22 16:59:11,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:11,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:12,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:12,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:12,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 16:59:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:12,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 16:59:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:12,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:12,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 16:59:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:12,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:12,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:12,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:12,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:59:12,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:12,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227045561] [2022-07-22 16:59:12,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227045561] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:12,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928126272] [2022-07-22 16:59:12,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:12,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:12,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:12,247 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) [2022-07-22 16:59:12,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 16:59:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:12,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:59:12,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:12,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 16:59:12,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:12,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928126272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:12,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:12,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:59:12,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289635976] [2022-07-22 16:59:12,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:12,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:12,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:12,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:12,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:59:12,597 INFO L87 Difference]: Start difference. First operand 540 states and 899 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:12,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:12,652 INFO L93 Difference]: Finished difference Result 1062 states and 1776 transitions. [2022-07-22 16:59:12,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:59:12,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2022-07-22 16:59:12,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:12,656 INFO L225 Difference]: With dead ends: 1062 [2022-07-22 16:59:12,656 INFO L226 Difference]: Without dead ends: 540 [2022-07-22 16:59:12,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:59:12,659 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 18 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2618 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 [2022-07-22 16:59:12,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2618 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:59:12,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-07-22 16:59:12,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2022-07-22 16:59:12,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 426 states have (on average 1.692488262910798) internal successors, (721), 445 states have internal predecessors, (721), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-07-22 16:59:12,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 898 transitions. [2022-07-22 16:59:12,676 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 898 transitions. Word has length 104 [2022-07-22 16:59:12,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:12,676 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 898 transitions. [2022-07-22 16:59:12,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:12,676 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 898 transitions. [2022-07-22 16:59:12,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 16:59:12,679 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:12,679 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:12,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:12,899 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 [2022-07-22 16:59:12,899 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:12,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:12,900 INFO L85 PathProgramCache]: Analyzing trace with hash 701773849, now seen corresponding path program 1 times [2022-07-22 16:59:12,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:12,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807615815] [2022-07-22 16:59:12,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:12,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 16:59:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:59:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,287 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:59:13,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:13,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807615815] [2022-07-22 16:59:13,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807615815] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:13,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776217295] [2022-07-22 16:59:13,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:13,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:13,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:13,289 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) [2022-07-22 16:59:13,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 16:59:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:13,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:59:13,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 16:59:13,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:13,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776217295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:13,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:13,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:59:13,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758078106] [2022-07-22 16:59:13,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:13,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:13,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:13,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:13,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:59:13,637 INFO L87 Difference]: Start difference. First operand 540 states and 898 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:13,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:13,692 INFO L93 Difference]: Finished difference Result 1062 states and 1775 transitions. [2022-07-22 16:59:13,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:59:13,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2022-07-22 16:59:13,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:13,696 INFO L225 Difference]: With dead ends: 1062 [2022-07-22 16:59:13,696 INFO L226 Difference]: Without dead ends: 540 [2022-07-22 16:59:13,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:59:13,699 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 17 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2618 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 [2022-07-22 16:59:13,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2618 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:59:13,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-07-22 16:59:13,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2022-07-22 16:59:13,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 426 states have (on average 1.6901408450704225) internal successors, (720), 445 states have internal predecessors, (720), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-07-22 16:59:13,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 897 transitions. [2022-07-22 16:59:13,717 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 897 transitions. Word has length 105 [2022-07-22 16:59:13,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:13,718 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 897 transitions. [2022-07-22 16:59:13,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:13,718 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 897 transitions. [2022-07-22 16:59:13,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 16:59:13,721 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:13,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:13,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:13,946 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 [2022-07-22 16:59:13,947 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:13,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:13,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1437379352, now seen corresponding path program 1 times [2022-07-22 16:59:13,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:13,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000341293] [2022-07-22 16:59:13,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:13,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:14,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:14,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:14,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:14,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 16:59:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:14,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:14,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:14,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:59:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:14,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:14,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:14,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:14,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:14,356 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 16:59:14,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:14,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000341293] [2022-07-22 16:59:14,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000341293] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:14,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763741491] [2022-07-22 16:59:14,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:14,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:14,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:14,360 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) [2022-07-22 16:59:14,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 16:59:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:14,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:59:14,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 16:59:14,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:14,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763741491] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:14,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:14,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-07-22 16:59:14,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759863677] [2022-07-22 16:59:14,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:14,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:59:14,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:14,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:59:14,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:59:14,742 INFO L87 Difference]: Start difference. First operand 540 states and 897 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:59:14,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:14,841 INFO L93 Difference]: Finished difference Result 1081 states and 1805 transitions. [2022-07-22 16:59:14,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:59:14,842 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2022-07-22 16:59:14,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:14,845 INFO L225 Difference]: With dead ends: 1081 [2022-07-22 16:59:14,846 INFO L226 Difference]: Without dead ends: 563 [2022-07-22 16:59:14,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:59:14,848 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 148 mSDsluCounter, 4267 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 5143 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 [2022-07-22 16:59:14,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 5143 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:59:14,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-07-22 16:59:14,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 559. [2022-07-22 16:59:14,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 442 states have (on average 1.6877828054298643) internal successors, (746), 463 states have internal predecessors, (746), 92 states have call successors, (92), 23 states have call predecessors, (92), 24 states have return successors, (90), 85 states have call predecessors, (90), 87 states have call successors, (90) [2022-07-22 16:59:14,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 928 transitions. [2022-07-22 16:59:14,865 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 928 transitions. Word has length 106 [2022-07-22 16:59:14,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:14,866 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 928 transitions. [2022-07-22 16:59:14,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:59:14,866 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 928 transitions. [2022-07-22 16:59:14,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 16:59:14,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:14,869 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:14,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:15,091 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 [2022-07-22 16:59:15,092 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:15,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:15,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1052012569, now seen corresponding path program 1 times [2022-07-22 16:59:15,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:15,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135652235] [2022-07-22 16:59:15,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:15,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 16:59:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:59:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,493 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 16:59:15,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:15,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135652235] [2022-07-22 16:59:15,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135652235] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:15,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693037850] [2022-07-22 16:59:15,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:15,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:15,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:15,495 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) [2022-07-22 16:59:15,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 16:59:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:15,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:59:15,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:15,827 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 16:59:15,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:15,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693037850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:15,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:15,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:59:15,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517715945] [2022-07-22 16:59:15,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:15,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:15,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:15,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:15,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:59:15,829 INFO L87 Difference]: Start difference. First operand 559 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:15,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:15,953 INFO L93 Difference]: Finished difference Result 1122 states and 1879 transitions. [2022-07-22 16:59:15,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 16:59:15,953 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2022-07-22 16:59:15,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:15,957 INFO L225 Difference]: With dead ends: 1122 [2022-07-22 16:59:15,957 INFO L226 Difference]: Without dead ends: 559 [2022-07-22 16:59:15,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:59:15,960 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 135 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2435 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 [2022-07-22 16:59:15,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2435 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:59:15,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-07-22 16:59:15,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2022-07-22 16:59:15,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 442 states have (on average 1.6764705882352942) internal successors, (741), 463 states have internal predecessors, (741), 92 states have call successors, (92), 23 states have call predecessors, (92), 24 states have return successors, (90), 85 states have call predecessors, (90), 87 states have call successors, (90) [2022-07-22 16:59:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 923 transitions. [2022-07-22 16:59:15,977 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 923 transitions. Word has length 106 [2022-07-22 16:59:15,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:15,978 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 923 transitions. [2022-07-22 16:59:15,978 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:15,978 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 923 transitions. [2022-07-22 16:59:15,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-22 16:59:15,981 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:15,981 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:16,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:16,198 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 [2022-07-22 16:59:16,199 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:16,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:16,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1192894943, now seen corresponding path program 1 times [2022-07-22 16:59:16,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:16,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222498706] [2022-07-22 16:59:16,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:16,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:16,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:16,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:16,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:16,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 16:59:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:16,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:16,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:16,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 16:59:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:16,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:16,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:16,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:16,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:16,572 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 16:59:16,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:16,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222498706] [2022-07-22 16:59:16,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222498706] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:16,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357901467] [2022-07-22 16:59:16,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:16,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:16,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:16,576 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) [2022-07-22 16:59:16,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 16:59:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:16,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:59:16,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 16:59:16,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:16,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357901467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:16,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:16,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:59:16,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482400966] [2022-07-22 16:59:16,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:16,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:16,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:16,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:16,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:59:16,935 INFO L87 Difference]: Start difference. First operand 559 states and 923 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:17,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:17,052 INFO L93 Difference]: Finished difference Result 1122 states and 1869 transitions. [2022-07-22 16:59:17,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 16:59:17,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2022-07-22 16:59:17,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:17,061 INFO L225 Difference]: With dead ends: 1122 [2022-07-22 16:59:17,062 INFO L226 Difference]: Without dead ends: 559 [2022-07-22 16:59:17,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:59:17,066 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 129 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2435 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 [2022-07-22 16:59:17,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2435 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:59:17,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-07-22 16:59:17,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2022-07-22 16:59:17,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 442 states have (on average 1.665158371040724) internal successors, (736), 463 states have internal predecessors, (736), 92 states have call successors, (92), 23 states have call predecessors, (92), 24 states have return successors, (90), 85 states have call predecessors, (90), 87 states have call successors, (90) [2022-07-22 16:59:17,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 918 transitions. [2022-07-22 16:59:17,083 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 918 transitions. Word has length 108 [2022-07-22 16:59:17,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:17,084 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 918 transitions. [2022-07-22 16:59:17,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:17,084 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 918 transitions. [2022-07-22 16:59:17,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 16:59:17,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:17,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:17,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:17,303 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 [2022-07-22 16:59:17,303 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:17,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:17,304 INFO L85 PathProgramCache]: Analyzing trace with hash 973349433, now seen corresponding path program 1 times [2022-07-22 16:59:17,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:17,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351524712] [2022-07-22 16:59:17,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:17,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:17,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:17,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:17,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:17,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 16:59:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:17,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:17,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:17,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 16:59:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:17,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:17,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:17,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:17,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 16:59:17,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:17,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351524712] [2022-07-22 16:59:17,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351524712] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:17,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186359214] [2022-07-22 16:59:17,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:17,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:17,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:17,686 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) [2022-07-22 16:59:17,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 16:59:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:17,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:59:17,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:18,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 16:59:18,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:18,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186359214] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:18,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:18,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:59:18,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738788505] [2022-07-22 16:59:18,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:18,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:18,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:18,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:18,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:59:18,027 INFO L87 Difference]: Start difference. First operand 559 states and 918 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:18,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:18,177 INFO L93 Difference]: Finished difference Result 1158 states and 1917 transitions. [2022-07-22 16:59:18,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:59:18,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2022-07-22 16:59:18,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:18,181 INFO L225 Difference]: With dead ends: 1158 [2022-07-22 16:59:18,182 INFO L226 Difference]: Without dead ends: 625 [2022-07-22 16:59:18,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:59:18,185 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 179 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2445 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 [2022-07-22 16:59:18,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2445 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:59:18,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-07-22 16:59:18,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 610. [2022-07-22 16:59:18,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 492 states have (on average 1.66869918699187) internal successors, (821), 513 states have internal predecessors, (821), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (89), 85 states have call predecessors, (89), 87 states have call successors, (89) [2022-07-22 16:59:18,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 1002 transitions. [2022-07-22 16:59:18,238 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 1002 transitions. Word has length 110 [2022-07-22 16:59:18,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:18,238 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 1002 transitions. [2022-07-22 16:59:18,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:18,238 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 1002 transitions. [2022-07-22 16:59:18,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 16:59:18,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:18,241 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:18,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:18,441 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 [2022-07-22 16:59:18,442 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:18,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:18,442 INFO L85 PathProgramCache]: Analyzing trace with hash -806284545, now seen corresponding path program 1 times [2022-07-22 16:59:18,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:18,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834018764] [2022-07-22 16:59:18,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:18,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:18,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:18,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:18,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:18,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:59:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:18,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:18,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:18,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 16:59:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:18,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:18,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:18,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 16:59:18,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:18,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834018764] [2022-07-22 16:59:18,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834018764] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:18,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165956666] [2022-07-22 16:59:18,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:18,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:18,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:18,850 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) [2022-07-22 16:59:18,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 16:59:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:19,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 16:59:19,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:19,182 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 16:59:19,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:19,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165956666] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:19,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:19,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-07-22 16:59:19,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996997623] [2022-07-22 16:59:19,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:19,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 16:59:19,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:19,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 16:59:19,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:59:19,184 INFO L87 Difference]: Start difference. First operand 610 states and 1002 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:59:19,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:19,358 INFO L93 Difference]: Finished difference Result 1150 states and 1897 transitions. [2022-07-22 16:59:19,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:59:19,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2022-07-22 16:59:19,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:19,362 INFO L225 Difference]: With dead ends: 1150 [2022-07-22 16:59:19,362 INFO L226 Difference]: Without dead ends: 632 [2022-07-22 16:59:19,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-07-22 16:59:19,365 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 177 mSDsluCounter, 5029 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 5885 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 [2022-07-22 16:59:19,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 5885 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:59:19,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-07-22 16:59:19,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 610. [2022-07-22 16:59:19,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 492 states have (on average 1.66869918699187) internal successors, (821), 513 states have internal predecessors, (821), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (89), 85 states have call predecessors, (89), 87 states have call successors, (89) [2022-07-22 16:59:19,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 1002 transitions. [2022-07-22 16:59:19,383 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 1002 transitions. Word has length 111 [2022-07-22 16:59:19,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:19,383 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 1002 transitions. [2022-07-22 16:59:19,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:59:19,383 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 1002 transitions. [2022-07-22 16:59:19,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 16:59:19,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:19,386 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:19,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:19,611 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 [2022-07-22 16:59:19,612 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:19,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:19,612 INFO L85 PathProgramCache]: Analyzing trace with hash 996001823, now seen corresponding path program 1 times [2022-07-22 16:59:19,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:19,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696079347] [2022-07-22 16:59:19,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:19,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:19,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:19,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:19,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:19,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:59:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:19,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:19,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:19,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 16:59:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:19,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:19,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:19,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:19,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 16:59:19,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:19,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696079347] [2022-07-22 16:59:19,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696079347] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:19,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095371665] [2022-07-22 16:59:19,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:19,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:19,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:19,995 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) [2022-07-22 16:59:19,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 16:59:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:20,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:59:20,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:20,312 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 16:59:20,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:20,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095371665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:20,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:20,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:59:20,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847089685] [2022-07-22 16:59:20,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:20,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:20,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:20,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:20,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:59:20,315 INFO L87 Difference]: Start difference. First operand 610 states and 1002 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:20,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:20,460 INFO L93 Difference]: Finished difference Result 1158 states and 1915 transitions. [2022-07-22 16:59:20,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:59:20,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2022-07-22 16:59:20,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:20,465 INFO L225 Difference]: With dead ends: 1158 [2022-07-22 16:59:20,465 INFO L226 Difference]: Without dead ends: 610 [2022-07-22 16:59:20,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:59:20,470 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 173 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2445 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 [2022-07-22 16:59:20,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2445 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:59:20,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-07-22 16:59:20,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2022-07-22 16:59:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 492 states have (on average 1.6585365853658536) internal successors, (816), 513 states have internal predecessors, (816), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (89), 85 states have call predecessors, (89), 87 states have call successors, (89) [2022-07-22 16:59:20,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 997 transitions. [2022-07-22 16:59:20,495 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 997 transitions. Word has length 111 [2022-07-22 16:59:20,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:20,496 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 997 transitions. [2022-07-22 16:59:20,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:20,496 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 997 transitions. [2022-07-22 16:59:20,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 16:59:20,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:20,499 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:20,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:20,724 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 [2022-07-22 16:59:20,725 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:20,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:20,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1615772002, now seen corresponding path program 1 times [2022-07-22 16:59:20,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:20,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152402043] [2022-07-22 16:59:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:20,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:20,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:20,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:20,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:20,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:59:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:20,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:20,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:21,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 16:59:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:21,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:21,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:21,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:21,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:21,127 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 16:59:21,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:21,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152402043] [2022-07-22 16:59:21,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152402043] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:21,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739519292] [2022-07-22 16:59:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:21,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:21,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:21,132 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) [2022-07-22 16:59:21,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 16:59:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:21,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:59:21,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:21,522 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 16:59:21,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:21,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739519292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:21,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:21,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-22 16:59:21,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841579015] [2022-07-22 16:59:21,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:21,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:59:21,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:21,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:59:21,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:59:21,524 INFO L87 Difference]: Start difference. First operand 610 states and 997 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:59:21,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:21,604 INFO L93 Difference]: Finished difference Result 1085 states and 1789 transitions. [2022-07-22 16:59:21,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:59:21,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2022-07-22 16:59:21,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:21,609 INFO L225 Difference]: With dead ends: 1085 [2022-07-22 16:59:21,609 INFO L226 Difference]: Without dead ends: 634 [2022-07-22 16:59:21,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:59:21,613 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 134 mSDsluCounter, 4234 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5102 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 [2022-07-22 16:59:21,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5102 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:59:21,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-07-22 16:59:21,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 629. [2022-07-22 16:59:21,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 508 states have (on average 1.6574803149606299) internal successors, (842), 531 states have internal predecessors, (842), 93 states have call successors, (93), 24 states have call predecessors, (93), 27 states have return successors, (92), 86 states have call predecessors, (92), 88 states have call successors, (92) [2022-07-22 16:59:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1027 transitions. [2022-07-22 16:59:21,632 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1027 transitions. Word has length 111 [2022-07-22 16:59:21,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:21,632 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 1027 transitions. [2022-07-22 16:59:21,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:59:21,633 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1027 transitions. [2022-07-22 16:59:21,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 16:59:21,636 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:21,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:21,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:21,861 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 [2022-07-22 16:59:21,862 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:21,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:21,862 INFO L85 PathProgramCache]: Analyzing trace with hash -2082574163, now seen corresponding path program 1 times [2022-07-22 16:59:21,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:21,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91225517] [2022-07-22 16:59:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:21,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:21,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:21,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:21,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:21,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:59:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:21,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:21,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:22,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 16:59:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:22,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:22,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:22,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:22,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 16:59:22,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:22,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91225517] [2022-07-22 16:59:22,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91225517] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:22,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430358487] [2022-07-22 16:59:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:22,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:22,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:22,188 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) [2022-07-22 16:59:22,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 16:59:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:22,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:59:22,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:22,530 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 16:59:22,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:22,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430358487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:22,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:22,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-22 16:59:22,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859071178] [2022-07-22 16:59:22,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:22,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:59:22,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:22,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:59:22,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:59:22,533 INFO L87 Difference]: Start difference. First operand 629 states and 1027 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:59:22,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:22,635 INFO L93 Difference]: Finished difference Result 1115 states and 1840 transitions. [2022-07-22 16:59:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:59:22,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2022-07-22 16:59:22,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:22,639 INFO L225 Difference]: With dead ends: 1115 [2022-07-22 16:59:22,640 INFO L226 Difference]: Without dead ends: 664 [2022-07-22 16:59:22,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:59:22,643 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 143 mSDsluCounter, 4224 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5092 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 [2022-07-22 16:59:22,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5092 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:59:22,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-07-22 16:59:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 629. [2022-07-22 16:59:22,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 508 states have (on average 1.6574803149606299) internal successors, (842), 531 states have internal predecessors, (842), 93 states have call successors, (93), 24 states have call predecessors, (93), 27 states have return successors, (92), 86 states have call predecessors, (92), 88 states have call successors, (92) [2022-07-22 16:59:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1027 transitions. [2022-07-22 16:59:22,662 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1027 transitions. Word has length 112 [2022-07-22 16:59:22,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:22,663 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 1027 transitions. [2022-07-22 16:59:22,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:59:22,663 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1027 transitions. [2022-07-22 16:59:22,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 16:59:22,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:22,667 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:22,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:22,879 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 [2022-07-22 16:59:22,879 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:22,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:22,880 INFO L85 PathProgramCache]: Analyzing trace with hash -744370899, now seen corresponding path program 1 times [2022-07-22 16:59:22,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:22,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940868701] [2022-07-22 16:59:22,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:22,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:23,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:23,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:23,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:23,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:59:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:23,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:23,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:23,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 16:59:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:23,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:23,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:23,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:23,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:23,212 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 16:59:23,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:23,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940868701] [2022-07-22 16:59:23,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940868701] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:23,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510599476] [2022-07-22 16:59:23,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:23,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:23,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:23,216 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) [2022-07-22 16:59:23,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 16:59:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:23,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 16:59:23,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 16:59:23,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:23,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510599476] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:23,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:23,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-22 16:59:23,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55447636] [2022-07-22 16:59:23,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:23,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 16:59:23,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:23,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 16:59:23,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:59:23,542 INFO L87 Difference]: Start difference. First operand 629 states and 1027 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:59:23,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:23,694 INFO L93 Difference]: Finished difference Result 1100 states and 1814 transitions. [2022-07-22 16:59:23,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:59:23,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2022-07-22 16:59:23,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:23,698 INFO L225 Difference]: With dead ends: 1100 [2022-07-22 16:59:23,698 INFO L226 Difference]: Without dead ends: 649 [2022-07-22 16:59:23,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:59:23,703 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 177 mSDsluCounter, 5035 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 5893 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 [2022-07-22 16:59:23,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 5893 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:59:23,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-07-22 16:59:23,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 629. [2022-07-22 16:59:23,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 508 states have (on average 1.6574803149606299) internal successors, (842), 531 states have internal predecessors, (842), 93 states have call successors, (93), 24 states have call predecessors, (93), 27 states have return successors, (92), 86 states have call predecessors, (92), 88 states have call successors, (92) [2022-07-22 16:59:23,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1027 transitions. [2022-07-22 16:59:23,723 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1027 transitions. Word has length 112 [2022-07-22 16:59:23,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:23,723 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 1027 transitions. [2022-07-22 16:59:23,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:59:23,723 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1027 transitions. [2022-07-22 16:59:23,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 16:59:23,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:23,726 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:23,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:23,940 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 [2022-07-22 16:59:23,940 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:23,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:23,940 INFO L85 PathProgramCache]: Analyzing trace with hash 461750229, now seen corresponding path program 1 times [2022-07-22 16:59:23,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:23,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835933524] [2022-07-22 16:59:23,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:23,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:24,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:24,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:24,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:24,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:59:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:24,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:24,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 16:59:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:24,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 16:59:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:24,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:24,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:24,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:24,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 16:59:24,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:24,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835933524] [2022-07-22 16:59:24,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835933524] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:24,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568513513] [2022-07-22 16:59:24,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:24,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:24,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:24,263 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) [2022-07-22 16:59:24,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 16:59:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:24,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:59:24,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 16:59:24,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:24,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568513513] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:24,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:24,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:59:24,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685421400] [2022-07-22 16:59:24,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:24,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:24,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:24,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:24,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:59:24,590 INFO L87 Difference]: Start difference. First operand 629 states and 1027 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:24,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:24,635 INFO L93 Difference]: Finished difference Result 1152 states and 1899 transitions. [2022-07-22 16:59:24,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:59:24,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-07-22 16:59:24,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:24,640 INFO L225 Difference]: With dead ends: 1152 [2022-07-22 16:59:24,640 INFO L226 Difference]: Without dead ends: 629 [2022-07-22 16:59:24,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:59:24,643 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 23 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2587 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 [2022-07-22 16:59:24,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2587 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:59:24,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-07-22 16:59:24,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2022-07-22 16:59:24,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 508 states have (on average 1.6496062992125984) internal successors, (838), 531 states have internal predecessors, (838), 93 states have call successors, (93), 24 states have call predecessors, (93), 27 states have return successors, (92), 86 states have call predecessors, (92), 88 states have call successors, (92) [2022-07-22 16:59:24,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1023 transitions. [2022-07-22 16:59:24,665 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1023 transitions. Word has length 112 [2022-07-22 16:59:24,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:24,666 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 1023 transitions. [2022-07-22 16:59:24,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:24,666 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1023 transitions. [2022-07-22 16:59:24,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 16:59:24,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:24,669 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:24,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:24,883 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 [2022-07-22 16:59:24,883 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:24,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:24,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1116279402, now seen corresponding path program 1 times [2022-07-22 16:59:24,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:24,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932033533] [2022-07-22 16:59:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:24,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:24,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:25,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:25,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:59:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:25,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:25,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:25,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 16:59:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:25,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:25,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:25,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:25,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:25,214 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 16:59:25,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:25,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932033533] [2022-07-22 16:59:25,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932033533] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:25,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288787132] [2022-07-22 16:59:25,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:25,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:25,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:25,220 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) [2022-07-22 16:59:25,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-22 16:59:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:25,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 16:59:25,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 16:59:25,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:25,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288787132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:25,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:25,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-22 16:59:25,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598389025] [2022-07-22 16:59:25,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:25,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 16:59:25,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:25,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 16:59:25,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:59:25,593 INFO L87 Difference]: Start difference. First operand 629 states and 1023 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:59:25,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:25,726 INFO L93 Difference]: Finished difference Result 1100 states and 1811 transitions. [2022-07-22 16:59:25,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:59:25,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 113 [2022-07-22 16:59:25,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:25,730 INFO L225 Difference]: With dead ends: 1100 [2022-07-22 16:59:25,730 INFO L226 Difference]: Without dead ends: 649 [2022-07-22 16:59:25,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:59:25,733 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 185 mSDsluCounter, 4998 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 5850 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 [2022-07-22 16:59:25,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 5850 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:59:25,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-07-22 16:59:25,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 629. [2022-07-22 16:59:25,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 508 states have (on average 1.6496062992125984) internal successors, (838), 531 states have internal predecessors, (838), 93 states have call successors, (93), 24 states have call predecessors, (93), 27 states have return successors, (92), 86 states have call predecessors, (92), 88 states have call successors, (92) [2022-07-22 16:59:25,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1023 transitions. [2022-07-22 16:59:25,757 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1023 transitions. Word has length 113 [2022-07-22 16:59:25,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:25,758 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 1023 transitions. [2022-07-22 16:59:25,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:59:25,758 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1023 transitions. [2022-07-22 16:59:25,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 16:59:25,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:25,761 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:25,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:25,975 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 [2022-07-22 16:59:25,976 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:25,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:25,976 INFO L85 PathProgramCache]: Analyzing trace with hash -588544878, now seen corresponding path program 1 times [2022-07-22 16:59:25,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:25,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623177389] [2022-07-22 16:59:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:25,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:26,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:26,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:26,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:26,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:59:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:26,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:26,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:26,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:59:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:26,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:26,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:26,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:26,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 16:59:26,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:26,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623177389] [2022-07-22 16:59:26,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623177389] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:26,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141595354] [2022-07-22 16:59:26,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:26,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:26,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:26,300 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) [2022-07-22 16:59:26,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-22 16:59:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:26,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 16:59:26,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 16:59:26,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:26,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141595354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:26,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:26,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:59:26,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099691515] [2022-07-22 16:59:26,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:26,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:26,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:26,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:26,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:59:26,615 INFO L87 Difference]: Start difference. First operand 629 states and 1023 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:26,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:26,673 INFO L93 Difference]: Finished difference Result 1208 states and 1981 transitions. [2022-07-22 16:59:26,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 16:59:26,674 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2022-07-22 16:59:26,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:26,678 INFO L225 Difference]: With dead ends: 1208 [2022-07-22 16:59:26,678 INFO L226 Difference]: Without dead ends: 665 [2022-07-22 16:59:26,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:59:26,681 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 38 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2563 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 [2022-07-22 16:59:26,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2563 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:59:26,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-07-22 16:59:26,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 653. [2022-07-22 16:59:26,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 532 states have (on average 1.6278195488721805) internal successors, (866), 555 states have internal predecessors, (866), 93 states have call successors, (93), 24 states have call predecessors, (93), 27 states have return successors, (92), 86 states have call predecessors, (92), 88 states have call successors, (92) [2022-07-22 16:59:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 1051 transitions. [2022-07-22 16:59:26,701 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 1051 transitions. Word has length 114 [2022-07-22 16:59:26,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:26,702 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 1051 transitions. [2022-07-22 16:59:26,702 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:26,702 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 1051 transitions. [2022-07-22 16:59:26,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 16:59:26,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:26,705 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:26,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:26,931 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 [2022-07-22 16:59:26,931 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:26,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:26,931 INFO L85 PathProgramCache]: Analyzing trace with hash 939496016, now seen corresponding path program 1 times [2022-07-22 16:59:26,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:26,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406998591] [2022-07-22 16:59:26,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:26,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:27,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:27,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:27,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:27,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:59:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:27,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:27,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:27,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:59:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:27,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:27,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:27,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 16:59:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:27,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 16:59:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:59:27,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:27,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406998591] [2022-07-22 16:59:27,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406998591] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:27,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28007689] [2022-07-22 16:59:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:27,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:27,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:27,300 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) [2022-07-22 16:59:27,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-22 16:59:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:27,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:59:27,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 16:59:27,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:27,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28007689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:27,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:27,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:59:27,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966593666] [2022-07-22 16:59:27,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:27,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:27,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:27,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:27,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:59:27,576 INFO L87 Difference]: Start difference. First operand 653 states and 1051 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:27,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:27,709 INFO L93 Difference]: Finished difference Result 1218 states and 2010 transitions. [2022-07-22 16:59:27,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 16:59:27,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2022-07-22 16:59:27,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:27,714 INFO L225 Difference]: With dead ends: 1218 [2022-07-22 16:59:27,714 INFO L226 Difference]: Without dead ends: 772 [2022-07-22 16:59:27,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:59:27,717 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 215 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:59:27,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 2740 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:59:27,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-07-22 16:59:27,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 655. [2022-07-22 16:59:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 534 states have (on average 1.6254681647940075) internal successors, (868), 557 states have internal predecessors, (868), 93 states have call successors, (93), 24 states have call predecessors, (93), 27 states have return successors, (92), 86 states have call predecessors, (92), 88 states have call successors, (92) [2022-07-22 16:59:27,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1053 transitions. [2022-07-22 16:59:27,741 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1053 transitions. Word has length 114 [2022-07-22 16:59:27,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:27,741 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 1053 transitions. [2022-07-22 16:59:27,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:27,742 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1053 transitions. [2022-07-22 16:59:27,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-22 16:59:27,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:27,745 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:27,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:27,959 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 [2022-07-22 16:59:27,959 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:27,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:27,960 INFO L85 PathProgramCache]: Analyzing trace with hash -266827908, now seen corresponding path program 1 times [2022-07-22 16:59:27,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:27,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558001222] [2022-07-22 16:59:27,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:27,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:28,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:28,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:28,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:28,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:59:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:28,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:28,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:28,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:59:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:28,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:28,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:28,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:59:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:59:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:28,287 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:59:28,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:28,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558001222] [2022-07-22 16:59:28,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558001222] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:28,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747294567] [2022-07-22 16:59:28,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:28,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:28,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:28,289 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) [2022-07-22 16:59:28,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-22 16:59:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:28,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 1803 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 16:59:28,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 16:59:28,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:28,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747294567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:28,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:28,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2022-07-22 16:59:28,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650045391] [2022-07-22 16:59:28,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:28,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:59:28,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:28,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:59:28,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:59:28,809 INFO L87 Difference]: Start difference. First operand 655 states and 1053 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-22 16:59:31,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:31,927 INFO L93 Difference]: Finished difference Result 1937 states and 3235 transitions. [2022-07-22 16:59:31,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 16:59:31,928 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 117 [2022-07-22 16:59:31,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:31,939 INFO L225 Difference]: With dead ends: 1937 [2022-07-22 16:59:31,940 INFO L226 Difference]: Without dead ends: 1489 [2022-07-22 16:59:31,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-07-22 16:59:31,943 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 3169 mSDsluCounter, 3324 mSDsCounter, 0 mSdLazyCounter, 4986 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3288 SdHoareTripleChecker+Valid, 5003 SdHoareTripleChecker+Invalid, 5855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 4986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 16:59:31,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3288 Valid, 5003 Invalid, 5855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 4986 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 16:59:31,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2022-07-22 16:59:31,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1324. [2022-07-22 16:59:31,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1048 states have (on average 1.6288167938931297) internal successors, (1707), 1095 states have internal predecessors, (1707), 218 states have call successors, (218), 44 states have call predecessors, (218), 57 states have return successors, (251), 215 states have call predecessors, (251), 213 states have call successors, (251) [2022-07-22 16:59:32,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 2176 transitions. [2022-07-22 16:59:32,006 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 2176 transitions. Word has length 117 [2022-07-22 16:59:32,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:32,006 INFO L495 AbstractCegarLoop]: Abstraction has 1324 states and 2176 transitions. [2022-07-22 16:59:32,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-22 16:59:32,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 2176 transitions. [2022-07-22 16:59:32,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-22 16:59:32,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:32,012 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:32,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:32,235 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 [2022-07-22 16:59:32,236 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:32,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:32,236 INFO L85 PathProgramCache]: Analyzing trace with hash -408092965, now seen corresponding path program 1 times [2022-07-22 16:59:32,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:32,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189641453] [2022-07-22 16:59:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:32,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:32,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:32,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:32,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:32,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:59:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:32,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:32,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:32,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:59:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:32,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:32,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:32,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 16:59:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:32,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 16:59:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:32,554 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:59:32,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:32,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189641453] [2022-07-22 16:59:32,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189641453] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:32,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464514030] [2022-07-22 16:59:32,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:32,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:32,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:32,560 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) [2022-07-22 16:59:32,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-22 16:59:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:32,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:59:32,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 16:59:32,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:32,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464514030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:32,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:32,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-07-22 16:59:32,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526277653] [2022-07-22 16:59:32,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:32,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:59:32,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:32,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:59:32,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:59:32,877 INFO L87 Difference]: Start difference. First operand 1324 states and 2176 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:59:33,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:33,198 INFO L93 Difference]: Finished difference Result 3287 states and 5540 transitions. [2022-07-22 16:59:33,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:59:33,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 118 [2022-07-22 16:59:33,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:33,215 INFO L225 Difference]: With dead ends: 3287 [2022-07-22 16:59:33,216 INFO L226 Difference]: Without dead ends: 2282 [2022-07-22 16:59:33,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:59:33,223 INFO L413 NwaCegarLoop]: 1354 mSDtfsCounter, 721 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 4749 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:59:33,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 4749 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 16:59:33,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2022-07-22 16:59:33,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2263. [2022-07-22 16:59:33,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 1763 states have (on average 1.6369824163357913) internal successors, (2886), 1844 states have internal predecessors, (2886), 401 states have call successors, (401), 80 states have call predecessors, (401), 98 states have return successors, (472), 400 states have call predecessors, (472), 396 states have call successors, (472) [2022-07-22 16:59:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3759 transitions. [2022-07-22 16:59:33,327 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3759 transitions. Word has length 118 [2022-07-22 16:59:33,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:33,328 INFO L495 AbstractCegarLoop]: Abstraction has 2263 states and 3759 transitions. [2022-07-22 16:59:33,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:59:33,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3759 transitions. [2022-07-22 16:59:33,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-22 16:59:33,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:33,337 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 16:59:33,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-07-22 16:59:33,556 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 [2022-07-22 16:59:33,556 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:33,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:33,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1535898628, now seen corresponding path program 1 times [2022-07-22 16:59:33,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:33,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470071667] [2022-07-22 16:59:33,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:33,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:33,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:33,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:33,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:33,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:59:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:33,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:33,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:33,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 16:59:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:33,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:33,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:33,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:59:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:33,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:59:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 16:59:33,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:33,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470071667] [2022-07-22 16:59:33,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470071667] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:33,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015007967] [2022-07-22 16:59:33,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:33,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:33,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:33,960 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) [2022-07-22 16:59:33,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-22 16:59:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:34,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 16:59:34,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 16:59:34,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:34,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015007967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:34,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:34,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-22 16:59:34,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41197494] [2022-07-22 16:59:34,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:34,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:34,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:34,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:34,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:59:34,267 INFO L87 Difference]: Start difference. First operand 2263 states and 3759 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:34,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:34,361 INFO L93 Difference]: Finished difference Result 4382 states and 7320 transitions. [2022-07-22 16:59:34,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 16:59:34,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 120 [2022-07-22 16:59:34,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:34,380 INFO L225 Difference]: With dead ends: 4382 [2022-07-22 16:59:34,381 INFO L226 Difference]: Without dead ends: 2317 [2022-07-22 16:59:34,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-07-22 16:59:34,393 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 39 mSDsluCounter, 1705 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:59:34,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2560 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:59:34,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2022-07-22 16:59:34,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 2284. [2022-07-22 16:59:34,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2284 states, 1783 states have (on average 1.636567582725743) internal successors, (2918), 1865 states have internal predecessors, (2918), 401 states have call successors, (401), 80 states have call predecessors, (401), 99 states have return successors, (473), 400 states have call predecessors, (473), 396 states have call successors, (473) [2022-07-22 16:59:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 3792 transitions. [2022-07-22 16:59:34,484 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 3792 transitions. Word has length 120 [2022-07-22 16:59:34,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:34,484 INFO L495 AbstractCegarLoop]: Abstraction has 2284 states and 3792 transitions. [2022-07-22 16:59:34,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 16:59:34,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 3792 transitions. [2022-07-22 16:59:34,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-22 16:59:34,508 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:34,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:34,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:34,723 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 [2022-07-22 16:59:34,723 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:34,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:34,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1928608450, now seen corresponding path program 1 times [2022-07-22 16:59:34,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:34,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284197668] [2022-07-22 16:59:34,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:34,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:34,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:34,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:34,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:34,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:59:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:34,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:34,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:35,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 16:59:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:35,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:35,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:35,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:59:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:35,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:59:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 16:59:35,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:35,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284197668] [2022-07-22 16:59:35,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284197668] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:35,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142858211] [2022-07-22 16:59:35,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:35,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:35,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:35,096 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) [2022-07-22 16:59:35,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-22 16:59:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:35,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 1802 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 16:59:35,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:35,425 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 16:59:35,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:35,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142858211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:35,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:35,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 21 [2022-07-22 16:59:35,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121334108] [2022-07-22 16:59:35,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:35,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 16:59:35,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:35,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 16:59:35,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2022-07-22 16:59:35,427 INFO L87 Difference]: Start difference. First operand 2284 states and 3792 transitions. Second operand has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:59:35,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:35,610 INFO L93 Difference]: Finished difference Result 4312 states and 7200 transitions. [2022-07-22 16:59:35,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:59:35,611 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 121 [2022-07-22 16:59:35,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:35,626 INFO L225 Difference]: With dead ends: 4312 [2022-07-22 16:59:35,626 INFO L226 Difference]: Without dead ends: 2357 [2022-07-22 16:59:35,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2022-07-22 16:59:35,637 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 175 mSDsluCounter, 5008 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 5860 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:59:35,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 5860 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:59:35,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2022-07-22 16:59:35,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 2284. [2022-07-22 16:59:35,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2284 states, 1783 states have (on average 1.6360067302299495) internal successors, (2917), 1865 states have internal predecessors, (2917), 401 states have call successors, (401), 80 states have call predecessors, (401), 99 states have return successors, (473), 400 states have call predecessors, (473), 396 states have call successors, (473) [2022-07-22 16:59:35,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 3791 transitions. [2022-07-22 16:59:35,745 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 3791 transitions. Word has length 121 [2022-07-22 16:59:35,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:35,745 INFO L495 AbstractCegarLoop]: Abstraction has 2284 states and 3791 transitions. [2022-07-22 16:59:35,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 16:59:35,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 3791 transitions. [2022-07-22 16:59:35,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-22 16:59:35,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:35,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:35,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:35,971 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 [2022-07-22 16:59:35,971 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:35,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:35,972 INFO L85 PathProgramCache]: Analyzing trace with hash 232815680, now seen corresponding path program 1 times [2022-07-22 16:59:35,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:35,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373794326] [2022-07-22 16:59:35,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:35,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:36,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:36,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:36,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:36,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:59:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:36,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:36,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:36,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 16:59:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:36,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:36,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:36,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:59:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:36,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:59:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:36,354 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 16:59:36,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:36,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373794326] [2022-07-22 16:59:36,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373794326] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:36,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518552709] [2022-07-22 16:59:36,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:36,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:36,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:36,356 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) [2022-07-22 16:59:36,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-22 16:59:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:36,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 1805 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 16:59:36,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 16:59:36,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:36,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518552709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:36,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:36,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2022-07-22 16:59:36,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276944150] [2022-07-22 16:59:36,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:36,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:59:36,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:36,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:59:36,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:59:36,741 INFO L87 Difference]: Start difference. First operand 2284 states and 3791 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 16:59:37,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:37,027 INFO L93 Difference]: Finished difference Result 2497 states and 4145 transitions. [2022-07-22 16:59:37,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:59:37,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 121 [2022-07-22 16:59:37,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:37,044 INFO L225 Difference]: With dead ends: 2497 [2022-07-22 16:59:37,045 INFO L226 Difference]: Without dead ends: 2480 [2022-07-22 16:59:37,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:59:37,048 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 852 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:59:37,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 1564 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 16:59:37,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2022-07-22 16:59:37,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2302. [2022-07-22 16:59:37,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 1801 states have (on average 1.6296501943364798) internal successors, (2935), 1883 states have internal predecessors, (2935), 401 states have call successors, (401), 80 states have call predecessors, (401), 99 states have return successors, (473), 400 states have call predecessors, (473), 396 states have call successors, (473) [2022-07-22 16:59:37,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3809 transitions. [2022-07-22 16:59:37,156 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3809 transitions. Word has length 121 [2022-07-22 16:59:37,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:37,157 INFO L495 AbstractCegarLoop]: Abstraction has 2302 states and 3809 transitions. [2022-07-22 16:59:37,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 16:59:37,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3809 transitions. [2022-07-22 16:59:37,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 16:59:37,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:37,166 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:37,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:37,391 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 [2022-07-22 16:59:37,391 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:37,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:37,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1691028997, now seen corresponding path program 1 times [2022-07-22 16:59:37,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:37,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138009594] [2022-07-22 16:59:37,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:37,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:37,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:37,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:37,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:37,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:59:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:37,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:37,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:37,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 16:59:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:37,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:37,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:37,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:59:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:37,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:59:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:37,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:59:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:37,817 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 16:59:37,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:37,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138009594] [2022-07-22 16:59:37,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138009594] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:37,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886917308] [2022-07-22 16:59:37,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:37,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:37,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:37,818 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) [2022-07-22 16:59:37,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-22 16:59:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:38,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 1821 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 16:59:38,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 16:59:38,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:38,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886917308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:38,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:38,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 18 [2022-07-22 16:59:38,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658764691] [2022-07-22 16:59:38,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:38,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:59:38,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:38,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:59:38,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:59:38,115 INFO L87 Difference]: Start difference. First operand 2302 states and 3809 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-22 16:59:38,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:38,181 INFO L93 Difference]: Finished difference Result 2331 states and 3847 transitions. [2022-07-22 16:59:38,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:59:38,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 127 [2022-07-22 16:59:38,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:38,208 INFO L225 Difference]: With dead ends: 2331 [2022-07-22 16:59:38,209 INFO L226 Difference]: Without dead ends: 2314 [2022-07-22 16:59:38,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 16:59:38,212 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 37 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3458 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 [2022-07-22 16:59:38,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3458 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:59:38,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2022-07-22 16:59:38,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2302. [2022-07-22 16:59:38,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 1801 states have (on average 1.626318711826763) internal successors, (2929), 1883 states have internal predecessors, (2929), 401 states have call successors, (401), 80 states have call predecessors, (401), 99 states have return successors, (473), 400 states have call predecessors, (473), 396 states have call successors, (473) [2022-07-22 16:59:38,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3803 transitions. [2022-07-22 16:59:38,302 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3803 transitions. Word has length 127 [2022-07-22 16:59:38,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:38,303 INFO L495 AbstractCegarLoop]: Abstraction has 2302 states and 3803 transitions. [2022-07-22 16:59:38,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-22 16:59:38,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3803 transitions. [2022-07-22 16:59:38,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-22 16:59:38,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:38,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:38,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:38,535 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 [2022-07-22 16:59:38,535 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:38,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:38,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1168795695, now seen corresponding path program 1 times [2022-07-22 16:59:38,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:38,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115465157] [2022-07-22 16:59:38,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:38,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:38,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:38,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:38,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:38,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 16:59:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:38,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:38,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:38,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 16:59:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:38,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:38,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:38,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:59:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:38,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:59:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:38,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:59:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:38,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 16:59:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:38,944 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-22 16:59:38,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:38,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115465157] [2022-07-22 16:59:38,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115465157] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:38,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002054187] [2022-07-22 16:59:38,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:38,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:38,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:38,947 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) [2022-07-22 16:59:38,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-22 16:59:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:39,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 16:59:39,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:39,292 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 16:59:39,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:39,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002054187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:39,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:39,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 17 [2022-07-22 16:59:39,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548086347] [2022-07-22 16:59:39,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:39,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:59:39,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:39,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:59:39,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2022-07-22 16:59:39,294 INFO L87 Difference]: Start difference. First operand 2302 states and 3803 transitions. Second operand has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 16:59:39,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:39,436 INFO L93 Difference]: Finished difference Result 4462 states and 7402 transitions. [2022-07-22 16:59:39,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:59:39,437 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 138 [2022-07-22 16:59:39,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:39,452 INFO L225 Difference]: With dead ends: 4462 [2022-07-22 16:59:39,452 INFO L226 Difference]: Without dead ends: 2385 [2022-07-22 16:59:39,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:59:39,465 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 167 mSDsluCounter, 4182 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 5044 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:59:39,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 5044 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:59:39,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2022-07-22 16:59:39,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 2302. [2022-07-22 16:59:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 1801 states have (on average 1.626318711826763) internal successors, (2929), 1883 states have internal predecessors, (2929), 401 states have call successors, (401), 80 states have call predecessors, (401), 99 states have return successors, (473), 400 states have call predecessors, (473), 396 states have call successors, (473) [2022-07-22 16:59:39,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3803 transitions. [2022-07-22 16:59:39,559 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3803 transitions. Word has length 138 [2022-07-22 16:59:39,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:39,560 INFO L495 AbstractCegarLoop]: Abstraction has 2302 states and 3803 transitions. [2022-07-22 16:59:39,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 16:59:39,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3803 transitions. [2022-07-22 16:59:39,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-22 16:59:39,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:39,570 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 16:59:39,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:39,783 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 [2022-07-22 16:59:39,783 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:39,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:39,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1825862916, now seen corresponding path program 1 times [2022-07-22 16:59:39,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:39,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653042233] [2022-07-22 16:59:39,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:39,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:39,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:39,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:39,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:39,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 16:59:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:39,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:39,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:40,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 16:59:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:40,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:40,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:40,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 16:59:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:40,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 16:59:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:40,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 16:59:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:40,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:59:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:40,132 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 16:59:40,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:40,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653042233] [2022-07-22 16:59:40,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653042233] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:40,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518207762] [2022-07-22 16:59:40,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:40,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:40,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:40,135 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) [2022-07-22 16:59:40,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-22 16:59:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:40,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 16:59:40,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:40,526 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 16:59:40,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:40,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518207762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:40,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:40,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:59:40,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315024827] [2022-07-22 16:59:40,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:40,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:40,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:40,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:40,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:59:40,530 INFO L87 Difference]: Start difference. First operand 2302 states and 3803 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:59:40,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:40,620 INFO L93 Difference]: Finished difference Result 4466 states and 7408 transitions. [2022-07-22 16:59:40,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:59:40,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 138 [2022-07-22 16:59:40,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:40,644 INFO L225 Difference]: With dead ends: 4466 [2022-07-22 16:59:40,644 INFO L226 Difference]: Without dead ends: 2132 [2022-07-22 16:59:40,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:59:40,653 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 11 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2586 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 [2022-07-22 16:59:40,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2586 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:59:40,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2022-07-22 16:59:40,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 2132. [2022-07-22 16:59:40,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 1646 states have (on average 1.6330498177399757) internal successors, (2688), 1722 states have internal predecessors, (2688), 396 states have call successors, (396), 77 states have call predecessors, (396), 89 states have return successors, (459), 394 states have call predecessors, (459), 391 states have call successors, (459) [2022-07-22 16:59:40,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3543 transitions. [2022-07-22 16:59:40,735 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3543 transitions. Word has length 138 [2022-07-22 16:59:40,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:40,735 INFO L495 AbstractCegarLoop]: Abstraction has 2132 states and 3543 transitions. [2022-07-22 16:59:40,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:59:40,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3543 transitions. [2022-07-22 16:59:40,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-22 16:59:40,747 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:40,747 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:40,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:40,974 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 [2022-07-22 16:59:40,974 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:40,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:40,974 INFO L85 PathProgramCache]: Analyzing trace with hash -713032652, now seen corresponding path program 1 times [2022-07-22 16:59:40,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:40,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648199208] [2022-07-22 16:59:40,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:40,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:41,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:41,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:41,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 16:59:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:41,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:41,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 16:59:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:41,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:41,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:41,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:59:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:41,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:59:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:41,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:59:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:41,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 16:59:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:59:41,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:41,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648199208] [2022-07-22 16:59:41,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648199208] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:41,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584738745] [2022-07-22 16:59:41,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:41,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:41,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:41,276 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) [2022-07-22 16:59:41,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-22 16:59:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:41,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:59:41,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:41,585 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 16:59:41,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:41,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584738745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:41,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:41,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 16:59:41,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979713235] [2022-07-22 16:59:41,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:41,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:41,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:41,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:41,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:59:41,588 INFO L87 Difference]: Start difference. First operand 2132 states and 3543 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:59:41,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:41,719 INFO L93 Difference]: Finished difference Result 4233 states and 7052 transitions. [2022-07-22 16:59:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:59:41,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 140 [2022-07-22 16:59:41,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:41,733 INFO L225 Difference]: With dead ends: 4233 [2022-07-22 16:59:41,734 INFO L226 Difference]: Without dead ends: 2132 [2022-07-22 16:59:41,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:59:41,742 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 176 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2419 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 [2022-07-22 16:59:41,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2419 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:59:41,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2022-07-22 16:59:41,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 2132. [2022-07-22 16:59:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 1646 states have (on average 1.6324422843256379) internal successors, (2687), 1722 states have internal predecessors, (2687), 396 states have call successors, (396), 77 states have call predecessors, (396), 89 states have return successors, (459), 394 states have call predecessors, (459), 391 states have call successors, (459) [2022-07-22 16:59:41,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3542 transitions. [2022-07-22 16:59:41,824 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3542 transitions. Word has length 140 [2022-07-22 16:59:41,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:41,825 INFO L495 AbstractCegarLoop]: Abstraction has 2132 states and 3542 transitions. [2022-07-22 16:59:41,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:59:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3542 transitions. [2022-07-22 16:59:41,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-22 16:59:41,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:41,832 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:41,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:42,047 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 [2022-07-22 16:59:42,047 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:42,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:42,048 INFO L85 PathProgramCache]: Analyzing trace with hash 696289054, now seen corresponding path program 1 times [2022-07-22 16:59:42,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:42,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618894053] [2022-07-22 16:59:42,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:42,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:42,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:42,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:42,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:42,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:59:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:42,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:42,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:42,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 16:59:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:42,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:42,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:42,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:59:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:42,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:59:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:42,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 16:59:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:42,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 16:59:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:42,407 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 16:59:42,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:42,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618894053] [2022-07-22 16:59:42,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618894053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:42,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:59:42,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 16:59:42,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081402635] [2022-07-22 16:59:42,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:42,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 16:59:42,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:42,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 16:59:42,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:59:42,409 INFO L87 Difference]: Start difference. First operand 2132 states and 3542 transitions. Second operand has 13 states, 12 states have (on average 8.833333333333334) internal successors, (106), 8 states have internal predecessors, (106), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 16:59:49,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:49,368 INFO L93 Difference]: Finished difference Result 5562 states and 9599 transitions. [2022-07-22 16:59:49,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 16:59:49,369 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.833333333333334) internal successors, (106), 8 states have internal predecessors, (106), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 141 [2022-07-22 16:59:49,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:49,392 INFO L225 Difference]: With dead ends: 5562 [2022-07-22 16:59:49,393 INFO L226 Difference]: Without dead ends: 3476 [2022-07-22 16:59:49,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2022-07-22 16:59:49,409 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 1966 mSDsluCounter, 4264 mSDsCounter, 0 mSdLazyCounter, 7275 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 5200 SdHoareTripleChecker+Invalid, 7881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 7275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:59:49,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2038 Valid, 5200 Invalid, 7881 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [606 Valid, 7275 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-07-22 16:59:49,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2022-07-22 16:59:49,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 2212. [2022-07-22 16:59:49,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 1710 states have (on average 1.6263157894736842) internal successors, (2781), 1786 states have internal predecessors, (2781), 406 states have call successors, (406), 77 states have call predecessors, (406), 95 states have return successors, (486), 408 states have call predecessors, (486), 401 states have call successors, (486) [2022-07-22 16:59:49,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 3673 transitions. [2022-07-22 16:59:49,714 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 3673 transitions. Word has length 141 [2022-07-22 16:59:49,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:49,714 INFO L495 AbstractCegarLoop]: Abstraction has 2212 states and 3673 transitions. [2022-07-22 16:59:49,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.833333333333334) internal successors, (106), 8 states have internal predecessors, (106), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 16:59:49,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 3673 transitions. [2022-07-22 16:59:49,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 16:59:49,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:49,722 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:49,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 16:59:49,722 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:49,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:49,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1967551053, now seen corresponding path program 1 times [2022-07-22 16:59:49,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:49,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30274998] [2022-07-22 16:59:49,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:49,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:49,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:49,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:49,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:49,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:59:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:49,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:49,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:49,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 16:59:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:50,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:50,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:50,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 16:59:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:50,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 16:59:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:50,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 16:59:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:50,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 16:59:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 16:59:50,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:50,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30274998] [2022-07-22 16:59:50,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30274998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:50,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:59:50,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 16:59:50,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795746808] [2022-07-22 16:59:50,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:50,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:59:50,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:50,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:59:50,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 16:59:50,037 INFO L87 Difference]: Start difference. First operand 2212 states and 3673 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:59:53,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:53,876 INFO L93 Difference]: Finished difference Result 3735 states and 6255 transitions. [2022-07-22 16:59:53,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:59:53,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 145 [2022-07-22 16:59:53,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:53,885 INFO L225 Difference]: With dead ends: 3735 [2022-07-22 16:59:53,885 INFO L226 Difference]: Without dead ends: 1537 [2022-07-22 16:59:53,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:59:53,892 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 1761 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 2333 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 2167 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:59:53,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 2167 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2333 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-22 16:59:53,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2022-07-22 16:59:54,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1021. [2022-07-22 16:59:54,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 809 states have (on average 1.6205191594561186) internal successors, (1311), 842 states have internal predecessors, (1311), 167 states have call successors, (167), 42 states have call predecessors, (167), 44 states have return successors, (179), 161 states have call predecessors, (179), 162 states have call successors, (179) [2022-07-22 16:59:54,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1657 transitions. [2022-07-22 16:59:54,018 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1657 transitions. Word has length 145 [2022-07-22 16:59:54,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:54,018 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1657 transitions. [2022-07-22 16:59:54,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:59:54,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1657 transitions. [2022-07-22 16:59:54,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 16:59:54,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:54,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:54,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 16:59:54,022 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:54,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:54,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1783603339, now seen corresponding path program 1 times [2022-07-22 16:59:54,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:54,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892427317] [2022-07-22 16:59:54,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:54,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:54,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:54,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:54,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:54,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:59:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:54,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:54,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:54,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 16:59:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:54,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:54,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:54,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:59:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:54,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 16:59:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:54,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 16:59:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:54,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 16:59:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 16:59:54,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:54,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892427317] [2022-07-22 16:59:54,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892427317] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:54,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909841960] [2022-07-22 16:59:54,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:54,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:54,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:54,380 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) [2022-07-22 16:59:54,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-22 16:59:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:54,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 16:59:54,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:54,744 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 16:59:54,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:54,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909841960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:54,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:54,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-07-22 16:59:54,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140998244] [2022-07-22 16:59:54,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:54,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 16:59:54,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:54,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 16:59:54,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:59:54,746 INFO L87 Difference]: Start difference. First operand 1021 states and 1657 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:59:55,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:55,008 INFO L93 Difference]: Finished difference Result 2697 states and 4463 transitions. [2022-07-22 16:59:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 16:59:55,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 146 [2022-07-22 16:59:55,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:55,018 INFO L225 Difference]: With dead ends: 2697 [2022-07-22 16:59:55,019 INFO L226 Difference]: Without dead ends: 1793 [2022-07-22 16:59:55,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 16:59:55,024 INFO L413 NwaCegarLoop]: 1006 mSDtfsCounter, 786 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:59:55,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1676 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:59:55,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2022-07-22 16:59:55,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1778. [2022-07-22 16:59:55,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1393 states have (on average 1.6195262024407753) internal successors, (2256), 1451 states have internal predecessors, (2256), 306 states have call successors, (306), 76 states have call predecessors, (306), 78 states have return successors, (339), 299 states have call predecessors, (339), 301 states have call successors, (339) [2022-07-22 16:59:55,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2901 transitions. [2022-07-22 16:59:55,214 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2901 transitions. Word has length 146 [2022-07-22 16:59:55,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:55,214 INFO L495 AbstractCegarLoop]: Abstraction has 1778 states and 2901 transitions. [2022-07-22 16:59:55,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 16:59:55,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2901 transitions. [2022-07-22 16:59:55,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-22 16:59:55,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:55,218 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:55,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-07-22 16:59:55,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:55,439 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:55,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:55,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1299618357, now seen corresponding path program 1 times [2022-07-22 16:59:55,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:55,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845490067] [2022-07-22 16:59:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:55,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:55,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:55,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:55,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:55,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:59:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:55,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:55,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:55,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 16:59:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:55,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:55,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:55,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:59:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:55,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:59:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:55,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 16:59:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:55,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 16:59:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:55,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 16:59:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 16:59:55,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:55,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845490067] [2022-07-22 16:59:55,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845490067] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:55,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678920029] [2022-07-22 16:59:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:55,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:55,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:55,807 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) [2022-07-22 16:59:55,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-07-22 16:59:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:56,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 1892 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 16:59:56,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 16:59:56,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:56,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678920029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:56,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:56,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2022-07-22 16:59:56,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372383480] [2022-07-22 16:59:56,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:56,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 16:59:56,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:56,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 16:59:56,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:59:56,152 INFO L87 Difference]: Start difference. First operand 1778 states and 2901 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:59:56,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:56,498 INFO L93 Difference]: Finished difference Result 4959 states and 8219 transitions. [2022-07-22 16:59:56,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 16:59:56,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 151 [2022-07-22 16:59:56,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:56,514 INFO L225 Difference]: With dead ends: 4959 [2022-07-22 16:59:56,514 INFO L226 Difference]: Without dead ends: 3311 [2022-07-22 16:59:56,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:59:56,522 INFO L413 NwaCegarLoop]: 885 mSDtfsCounter, 847 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:59:56,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1522 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:59:56,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2022-07-22 16:59:56,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 3293. [2022-07-22 16:59:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3293 states, 2562 states have (on average 1.6311475409836065) internal successors, (4179), 2674 states have internal predecessors, (4179), 584 states have call successors, (584), 144 states have call predecessors, (584), 146 states have return successors, (672), 572 states have call predecessors, (672), 579 states have call successors, (672) [2022-07-22 16:59:56,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3293 states to 3293 states and 5435 transitions. [2022-07-22 16:59:56,826 INFO L78 Accepts]: Start accepts. Automaton has 3293 states and 5435 transitions. Word has length 151 [2022-07-22 16:59:56,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:56,826 INFO L495 AbstractCegarLoop]: Abstraction has 3293 states and 5435 transitions. [2022-07-22 16:59:56,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 16:59:56,826 INFO L276 IsEmpty]: Start isEmpty. Operand 3293 states and 5435 transitions. [2022-07-22 16:59:56,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-22 16:59:56,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:56,830 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:59:56,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:57,043 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 [2022-07-22 16:59:57,043 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:57,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:57,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1386233081, now seen corresponding path program 1 times [2022-07-22 16:59:57,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:57,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434788929] [2022-07-22 16:59:57,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:57,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:57,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:57,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:57,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:57,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:59:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:57,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:57,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:57,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 16:59:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:57,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:57,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:57,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:59:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:57,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:59:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:57,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 16:59:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:57,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 16:59:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:57,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 16:59:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:57,524 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 16:59:57,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:57,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434788929] [2022-07-22 16:59:57,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434788929] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 16:59:57,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668569383] [2022-07-22 16:59:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:57,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:59:57,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:59:57,525 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) [2022-07-22 16:59:57,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-07-22 16:59:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:57,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 1896 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 16:59:57,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:59:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 16:59:57,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:59:57,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668569383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:57,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:59:57,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 16:59:57,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996826819] [2022-07-22 16:59:57,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:57,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 16:59:57,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:57,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 16:59:57,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:59:57,820 INFO L87 Difference]: Start difference. First operand 3293 states and 5435 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 16:59:58,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:59:58,340 INFO L93 Difference]: Finished difference Result 5913 states and 9847 transitions. [2022-07-22 16:59:58,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 16:59:58,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 154 [2022-07-22 16:59:58,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:59:58,356 INFO L225 Difference]: With dead ends: 5913 [2022-07-22 16:59:58,356 INFO L226 Difference]: Without dead ends: 3293 [2022-07-22 16:59:58,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:59:58,367 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 329 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:59:58,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 2395 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:59:58,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2022-07-22 16:59:58,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 3293. [2022-07-22 16:59:58,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3293 states, 2562 states have (on average 1.624512099921936) internal successors, (4162), 2674 states have internal predecessors, (4162), 584 states have call successors, (584), 144 states have call predecessors, (584), 146 states have return successors, (672), 572 states have call predecessors, (672), 579 states have call successors, (672) [2022-07-22 16:59:58,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3293 states to 3293 states and 5418 transitions. [2022-07-22 16:59:58,726 INFO L78 Accepts]: Start accepts. Automaton has 3293 states and 5418 transitions. Word has length 154 [2022-07-22 16:59:58,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:59:58,726 INFO L495 AbstractCegarLoop]: Abstraction has 3293 states and 5418 transitions. [2022-07-22 16:59:58,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 16:59:58,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3293 states and 5418 transitions. [2022-07-22 16:59:58,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 16:59:58,730 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:59:58,730 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 16:59:58,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-07-22 16:59:58,955 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 [2022-07-22 16:59:58,955 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:59:58,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:59:58,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1901042202, now seen corresponding path program 1 times [2022-07-22 16:59:58,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:59:58,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207920676] [2022-07-22 16:59:58,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:59:58,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:59:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:59,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:59:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:59,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:59,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 16:59:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:59,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 16:59:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:59,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:59,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 16:59:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:59,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 16:59:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:59,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:59,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 16:59:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:59,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 16:59:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:59,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 16:59:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:59,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 16:59:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:59,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 16:59:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:59,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 16:59:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:59,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 16:59:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:59:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-22 16:59:59,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:59:59,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207920676] [2022-07-22 16:59:59,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207920676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:59:59,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:59:59,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 16:59:59,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905267147] [2022-07-22 16:59:59,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:59:59,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 16:59:59,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:59:59,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 16:59:59,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-22 16:59:59,405 INFO L87 Difference]: Start difference. First operand 3293 states and 5418 transitions. Second operand has 11 states, 10 states have (on average 11.0) internal successors, (110), 7 states have internal predecessors, (110), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 17:00:09,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:00:09,823 INFO L93 Difference]: Finished difference Result 8874 states and 15631 transitions. [2022-07-22 17:00:09,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 17:00:09,823 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.0) internal successors, (110), 7 states have internal predecessors, (110), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 156 [2022-07-22 17:00:09,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:00:09,858 INFO L225 Difference]: With dead ends: 8874 [2022-07-22 17:00:09,858 INFO L226 Difference]: Without dead ends: 6387 [2022-07-22 17:00:09,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2022-07-22 17:00:09,870 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 4297 mSDsluCounter, 3205 mSDsCounter, 0 mSdLazyCounter, 6620 mSolverCounterSat, 1560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4359 SdHoareTripleChecker+Valid, 4161 SdHoareTripleChecker+Invalid, 8180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1560 IncrementalHoareTripleChecker+Valid, 6620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:00:09,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4359 Valid, 4161 Invalid, 8180 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1560 Valid, 6620 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-07-22 17:00:09,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6387 states. [2022-07-22 17:00:10,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6387 to 4430. [2022-07-22 17:00:10,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4430 states, 3444 states have (on average 1.613240418118467) internal successors, (5556), 3601 states have internal predecessors, (5556), 767 states have call successors, (767), 191 states have call predecessors, (767), 218 states have return successors, (971), 757 states have call predecessors, (971), 762 states have call successors, (971) [2022-07-22 17:00:10,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4430 states to 4430 states and 7294 transitions. [2022-07-22 17:00:10,518 INFO L78 Accepts]: Start accepts. Automaton has 4430 states and 7294 transitions. Word has length 156 [2022-07-22 17:00:10,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:00:10,518 INFO L495 AbstractCegarLoop]: Abstraction has 4430 states and 7294 transitions. [2022-07-22 17:00:10,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.0) internal successors, (110), 7 states have internal predecessors, (110), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 17:00:10,519 INFO L276 IsEmpty]: Start isEmpty. Operand 4430 states and 7294 transitions. [2022-07-22 17:00:10,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-22 17:00:10,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:00:10,522 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:00:10,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-22 17:00:10,522 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:00:10,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:00:10,523 INFO L85 PathProgramCache]: Analyzing trace with hash 395869325, now seen corresponding path program 1 times [2022-07-22 17:00:10,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:00:10,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432417795] [2022-07-22 17:00:10,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:00:10,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:00:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:10,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:00:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:10,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:10,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:00:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:10,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 17:00:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:10,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:10,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:00:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:10,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:00:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:10,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:10,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:00:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:10,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:00:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:10,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:00:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:10,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 17:00:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:10,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:00:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:10,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:00:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:10,855 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:00:10,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:00:10,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432417795] [2022-07-22 17:00:10,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432417795] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:00:10,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691284872] [2022-07-22 17:00:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:00:10,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:00:10,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:00:10,858 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) [2022-07-22 17:00:10,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-07-22 17:00:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:11,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:00:11,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:00:11,161 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 17:00:11,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:00:11,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691284872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:00:11,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:00:11,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 17:00:11,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427628542] [2022-07-22 17:00:11,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:00:11,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:00:11,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:00:11,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:00:11,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:00:11,162 INFO L87 Difference]: Start difference. First operand 4430 states and 7294 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2022-07-22 17:00:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:00:11,626 INFO L93 Difference]: Finished difference Result 8792 states and 14710 transitions. [2022-07-22 17:00:11,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:00:11,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 158 [2022-07-22 17:00:11,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:00:11,646 INFO L225 Difference]: With dead ends: 8792 [2022-07-22 17:00:11,646 INFO L226 Difference]: Without dead ends: 4480 [2022-07-22 17:00:11,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:00:11,661 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 22 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2431 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:00:11,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2431 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:00:11,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4480 states. [2022-07-22 17:00:12,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4480 to 4480. [2022-07-22 17:00:12,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4480 states, 3484 states have (on average 1.6030424799081515) internal successors, (5585), 3646 states have internal predecessors, (5585), 767 states have call successors, (767), 196 states have call predecessors, (767), 228 states have return successors, (981), 757 states have call predecessors, (981), 762 states have call successors, (981) [2022-07-22 17:00:12,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 7333 transitions. [2022-07-22 17:00:12,311 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 7333 transitions. Word has length 158 [2022-07-22 17:00:12,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:00:12,312 INFO L495 AbstractCegarLoop]: Abstraction has 4480 states and 7333 transitions. [2022-07-22 17:00:12,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2022-07-22 17:00:12,313 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 7333 transitions. [2022-07-22 17:00:12,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-22 17:00:12,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:00:12,317 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-22 17:00:12,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-07-22 17:00:12,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:00:12,543 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:00:12,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:00:12,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1301134056, now seen corresponding path program 1 times [2022-07-22 17:00:12,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:00:12,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548171368] [2022-07-22 17:00:12,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:00:12,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:00:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:12,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:00:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:12,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:00:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:12,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 17:00:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:12,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:12,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:00:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:12,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:00:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:12,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:12,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:12,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:00:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:12,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:00:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:12,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:00:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:12,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:00:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:12,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:00:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:12,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:00:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:00:12,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:00:12,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548171368] [2022-07-22 17:00:12,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548171368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:00:12,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:00:12,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:00:12,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641390854] [2022-07-22 17:00:12,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:00:12,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:00:12,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:00:12,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:00:12,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:00:12,937 INFO L87 Difference]: Start difference. First operand 4480 states and 7333 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 17:00:23,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:00:23,203 INFO L93 Difference]: Finished difference Result 10174 states and 17317 transitions. [2022-07-22 17:00:23,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 17:00:23,204 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 159 [2022-07-22 17:00:23,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:00:23,231 INFO L225 Difference]: With dead ends: 10174 [2022-07-22 17:00:23,231 INFO L226 Difference]: Without dead ends: 6504 [2022-07-22 17:00:23,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-07-22 17:00:23,242 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 3493 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 5855 mSolverCounterSat, 1190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3553 SdHoareTripleChecker+Valid, 3283 SdHoareTripleChecker+Invalid, 7045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1190 IncrementalHoareTripleChecker+Valid, 5855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:00:23,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3553 Valid, 3283 Invalid, 7045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1190 Valid, 5855 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-07-22 17:00:23,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6504 states. [2022-07-22 17:00:24,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6504 to 4841. [2022-07-22 17:00:24,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4841 states, 3777 states have (on average 1.583267143235372) internal successors, (5980), 3938 states have internal predecessors, (5980), 806 states have call successors, (806), 229 states have call predecessors, (806), 257 states have return successors, (1039), 793 states have call predecessors, (1039), 801 states have call successors, (1039) [2022-07-22 17:00:24,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4841 states to 4841 states and 7825 transitions. [2022-07-22 17:00:24,031 INFO L78 Accepts]: Start accepts. Automaton has 4841 states and 7825 transitions. Word has length 159 [2022-07-22 17:00:24,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:00:24,031 INFO L495 AbstractCegarLoop]: Abstraction has 4841 states and 7825 transitions. [2022-07-22 17:00:24,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 17:00:24,032 INFO L276 IsEmpty]: Start isEmpty. Operand 4841 states and 7825 transitions. [2022-07-22 17:00:24,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-22 17:00:24,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:00:24,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:00:24,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-22 17:00:24,034 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:00:24,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:00:24,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1507630156, now seen corresponding path program 1 times [2022-07-22 17:00:24,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:00:24,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86335143] [2022-07-22 17:00:24,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:00:24,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:00:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:24,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:00:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:24,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:24,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:00:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:24,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 17:00:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:24,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:24,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:00:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:24,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:00:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:24,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:24,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:24,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:00:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:24,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:00:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:24,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:00:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:24,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:00:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:24,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:00:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:24,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:00:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:24,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:00:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 17:00:24,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:00:24,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86335143] [2022-07-22 17:00:24,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86335143] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:00:24,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:00:24,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:00:24,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055704857] [2022-07-22 17:00:24,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:00:24,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:00:24,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:00:24,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:00:24,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:00:24,356 INFO L87 Difference]: Start difference. First operand 4841 states and 7825 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 17:00:31,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:00:31,891 INFO L93 Difference]: Finished difference Result 13195 states and 22324 transitions. [2022-07-22 17:00:31,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:00:31,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 164 [2022-07-22 17:00:31,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:00:31,933 INFO L225 Difference]: With dead ends: 13195 [2022-07-22 17:00:31,933 INFO L226 Difference]: Without dead ends: 9173 [2022-07-22 17:00:31,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:00:31,949 INFO L413 NwaCegarLoop]: 1432 mSDtfsCounter, 2056 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 884 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2135 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 3426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 884 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:00:31,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2135 Valid, 2332 Invalid, 3426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [884 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-07-22 17:00:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9173 states. [2022-07-22 17:00:32,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9173 to 6873. [2022-07-22 17:00:32,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6873 states, 5372 states have (on average 1.5817200297840655) internal successors, (8497), 5599 states have internal predecessors, (8497), 1131 states have call successors, (1131), 319 states have call predecessors, (1131), 369 states have return successors, (1474), 1122 states have call predecessors, (1474), 1126 states have call successors, (1474) [2022-07-22 17:00:32,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6873 states to 6873 states and 11102 transitions. [2022-07-22 17:00:32,886 INFO L78 Accepts]: Start accepts. Automaton has 6873 states and 11102 transitions. Word has length 164 [2022-07-22 17:00:32,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:00:32,887 INFO L495 AbstractCegarLoop]: Abstraction has 6873 states and 11102 transitions. [2022-07-22 17:00:32,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 17:00:32,887 INFO L276 IsEmpty]: Start isEmpty. Operand 6873 states and 11102 transitions. [2022-07-22 17:00:32,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-22 17:00:32,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:00:32,889 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:00:32,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-22 17:00:32,890 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:00:32,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:00:32,890 INFO L85 PathProgramCache]: Analyzing trace with hash 135822858, now seen corresponding path program 1 times [2022-07-22 17:00:32,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:00:32,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431146247] [2022-07-22 17:00:32,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:00:32,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:00:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:33,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:00:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:33,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:33,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:00:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:33,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 17:00:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:33,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:33,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:00:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:33,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:00:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:33,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:33,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:33,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:00:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:33,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:00:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:33,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:00:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:33,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:00:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:33,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:00:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:33,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:00:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:33,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:00:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:33,369 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-22 17:00:33,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:00:33,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431146247] [2022-07-22 17:00:33,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431146247] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:00:33,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295550402] [2022-07-22 17:00:33,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:00:33,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:00:33,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:00:33,372 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) [2022-07-22 17:00:33,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-07-22 17:00:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:33,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1929 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-22 17:00:33,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:00:33,821 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 17:00:33,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:00:33,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295550402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:00:33,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:00:33,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-22 17:00:33,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155127521] [2022-07-22 17:00:33,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:00:33,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:00:33,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:00:33,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:00:33,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:00:33,823 INFO L87 Difference]: Start difference. First operand 6873 states and 11102 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 17:00:36,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:00:36,077 INFO L93 Difference]: Finished difference Result 20913 states and 34199 transitions. [2022-07-22 17:00:36,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:00:36,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 164 [2022-07-22 17:00:36,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:00:36,164 INFO L225 Difference]: With dead ends: 20913 [2022-07-22 17:00:36,164 INFO L226 Difference]: Without dead ends: 14162 [2022-07-22 17:00:36,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:00:36,204 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 1881 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1959 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:00:36,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1959 Valid, 1086 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 17:00:36,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14162 states. [2022-07-22 17:00:37,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14162 to 14160. [2022-07-22 17:00:37,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14160 states, 11069 states have (on average 1.5745776492908121) internal successors, (17429), 11536 states have internal predecessors, (17429), 2330 states have call successors, (2330), 634 states have call predecessors, (2330), 760 states have return successors, (3290), 2325 states have call predecessors, (3290), 2325 states have call successors, (3290) [2022-07-22 17:00:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14160 states to 14160 states and 23049 transitions. [2022-07-22 17:00:38,053 INFO L78 Accepts]: Start accepts. Automaton has 14160 states and 23049 transitions. Word has length 164 [2022-07-22 17:00:38,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:00:38,053 INFO L495 AbstractCegarLoop]: Abstraction has 14160 states and 23049 transitions. [2022-07-22 17:00:38,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 17:00:38,053 INFO L276 IsEmpty]: Start isEmpty. Operand 14160 states and 23049 transitions. [2022-07-22 17:00:38,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 17:00:38,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:00:38,059 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:00:38,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-07-22 17:00:38,260 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,SelfDestructingSolverStorable37 [2022-07-22 17:00:38,260 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:00:38,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:00:38,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1529166737, now seen corresponding path program 1 times [2022-07-22 17:00:38,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:00:38,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44585010] [2022-07-22 17:00:38,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:00:38,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:00:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:38,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:00:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:38,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:38,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:00:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:38,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 17:00:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:38,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:38,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:00:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:38,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:00:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:38,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:38,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:38,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:00:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:38,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:00:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:38,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 17:00:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:38,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:00:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:38,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:00:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:38,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:00:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:38,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:00:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:38,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:00:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-22 17:00:38,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:00:38,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44585010] [2022-07-22 17:00:38,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44585010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:00:38,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:00:38,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 17:00:38,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051458569] [2022-07-22 17:00:38,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:00:38,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 17:00:38,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:00:38,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 17:00:38,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:00:38,737 INFO L87 Difference]: Start difference. First operand 14160 states and 23049 transitions. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 8 states have internal predecessors, (113), 4 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 17:00:49,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:00:49,543 INFO L93 Difference]: Finished difference Result 35421 states and 60881 transitions. [2022-07-22 17:00:49,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 17:00:49,543 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 8 states have internal predecessors, (113), 4 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 3 states have call successors, (17) Word has length 167 [2022-07-22 17:00:49,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:00:49,664 INFO L225 Difference]: With dead ends: 35421 [2022-07-22 17:00:49,665 INFO L226 Difference]: Without dead ends: 21488 [2022-07-22 17:00:49,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=244, Invalid=812, Unknown=0, NotChecked=0, Total=1056 [2022-07-22 17:00:49,713 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 3265 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 6249 mSolverCounterSat, 1541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3265 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 7790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1541 IncrementalHoareTripleChecker+Valid, 6249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:00:49,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3265 Valid, 3151 Invalid, 7790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1541 Valid, 6249 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-07-22 17:00:49,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21488 states. [2022-07-22 17:00:51,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21488 to 14244. [2022-07-22 17:00:51,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14244 states, 11125 states have (on average 1.5616179775280898) internal successors, (17373), 11606 states have internal predecessors, (17373), 2330 states have call successors, (2330), 634 states have call predecessors, (2330), 788 states have return successors, (3510), 2339 states have call predecessors, (3510), 2325 states have call successors, (3510) [2022-07-22 17:00:52,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14244 states to 14244 states and 23213 transitions. [2022-07-22 17:00:52,071 INFO L78 Accepts]: Start accepts. Automaton has 14244 states and 23213 transitions. Word has length 167 [2022-07-22 17:00:52,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:00:52,072 INFO L495 AbstractCegarLoop]: Abstraction has 14244 states and 23213 transitions. [2022-07-22 17:00:52,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 8 states have internal predecessors, (113), 4 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 17:00:52,073 INFO L276 IsEmpty]: Start isEmpty. Operand 14244 states and 23213 transitions. [2022-07-22 17:00:52,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-22 17:00:52,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:00:52,080 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-22 17:00:52,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-22 17:00:52,081 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:00:52,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:00:52,081 INFO L85 PathProgramCache]: Analyzing trace with hash -16950840, now seen corresponding path program 1 times [2022-07-22 17:00:52,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:00:52,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763233990] [2022-07-22 17:00:52,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:00:52,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:00:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:52,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:00:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:52,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:52,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:00:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:52,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 17:00:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:52,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:52,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:00:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:52,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:00:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:52,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:52,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:00:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:52,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:00:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:52,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:00:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:52,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:00:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:52,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:00:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:52,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:00:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:52,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:00:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:52,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:00:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:00:52,420 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 17:00:52,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:00:52,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763233990] [2022-07-22 17:00:52,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763233990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:00:52,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:00:52,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:00:52,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696094448] [2022-07-22 17:00:52,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:00:52,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:00:52,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:00:52,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:00:52,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:00:52,422 INFO L87 Difference]: Start difference. First operand 14244 states and 23213 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 5 states have internal predecessors, (114), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 17:01:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:01:09,716 INFO L93 Difference]: Finished difference Result 60207 states and 109916 transitions. [2022-07-22 17:01:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 17:01:09,717 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 5 states have internal predecessors, (114), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 166 [2022-07-22 17:01:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:01:10,102 INFO L225 Difference]: With dead ends: 60207 [2022-07-22 17:01:10,102 INFO L226 Difference]: Without dead ends: 46230 [2022-07-22 17:01:10,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2022-07-22 17:01:10,180 INFO L413 NwaCegarLoop]: 1180 mSDtfsCounter, 5385 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 4202 mSolverCounterSat, 2061 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5446 SdHoareTripleChecker+Valid, 2766 SdHoareTripleChecker+Invalid, 6263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2061 IncrementalHoareTripleChecker+Valid, 4202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:01:10,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5446 Valid, 2766 Invalid, 6263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2061 Valid, 4202 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-07-22 17:01:10,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46230 states. [2022-07-22 17:01:14,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46230 to 22752. [2022-07-22 17:01:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22752 states, 17433 states have (on average 1.5501061205759192) internal successors, (27023), 18318 states have internal predecessors, (27023), 4057 states have call successors, (4057), 956 states have call predecessors, (4057), 1261 states have return successors, (6493), 4057 states have call predecessors, (6493), 4052 states have call successors, (6493) [2022-07-22 17:01:14,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22752 states to 22752 states and 37573 transitions. [2022-07-22 17:01:14,949 INFO L78 Accepts]: Start accepts. Automaton has 22752 states and 37573 transitions. Word has length 166 [2022-07-22 17:01:14,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:01:14,950 INFO L495 AbstractCegarLoop]: Abstraction has 22752 states and 37573 transitions. [2022-07-22 17:01:14,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 5 states have internal predecessors, (114), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 17:01:14,950 INFO L276 IsEmpty]: Start isEmpty. Operand 22752 states and 37573 transitions. [2022-07-22 17:01:14,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-22 17:01:14,958 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:01:14,958 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:01:14,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-22 17:01:14,959 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:01:14,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:01:14,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1754184705, now seen corresponding path program 1 times [2022-07-22 17:01:14,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:01:14,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542235468] [2022-07-22 17:01:14,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:01:14,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:01:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:01:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:01:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:01:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 17:01:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:01:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:01:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:01:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:01:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:01:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:01:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:01:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 17:01:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:01:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 17:01:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:01:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:01:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:01:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:01:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-22 17:01:15,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:01:15,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542235468] [2022-07-22 17:01:15,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542235468] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:01:15,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969515269] [2022-07-22 17:01:15,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:01:15,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:01:15,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:01:15,344 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) [2022-07-22 17:01:15,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-07-22 17:01:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:15,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 1978 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 17:01:15,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:01:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 17:01:15,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:01:15,813 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-22 17:01:15,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969515269] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 17:01:15,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 17:01:15,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 6] total 17 [2022-07-22 17:01:15,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350543710] [2022-07-22 17:01:15,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:01:15,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:01:15,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:01:15,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:01:15,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:01:15,817 INFO L87 Difference]: Start difference. First operand 22752 states and 37573 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-22 17:01:19,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:01:19,738 INFO L93 Difference]: Finished difference Result 23865 states and 39530 transitions. [2022-07-22 17:01:19,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:01:19,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 176 [2022-07-22 17:01:19,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:01:19,860 INFO L225 Difference]: With dead ends: 23865 [2022-07-22 17:01:19,860 INFO L226 Difference]: Without dead ends: 23844 [2022-07-22 17:01:19,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-07-22 17:01:19,882 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 66 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 3487 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:01:19,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 3487 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:01:19,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23844 states. [2022-07-22 17:01:23,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23844 to 22842. [2022-07-22 17:01:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22842 states, 17523 states have (on average 1.5455686811619016) internal successors, (27083), 18408 states have internal predecessors, (27083), 4057 states have call successors, (4057), 956 states have call predecessors, (4057), 1261 states have return successors, (6493), 4057 states have call predecessors, (6493), 4052 states have call successors, (6493) [2022-07-22 17:01:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22842 states to 22842 states and 37633 transitions. [2022-07-22 17:01:23,869 INFO L78 Accepts]: Start accepts. Automaton has 22842 states and 37633 transitions. Word has length 176 [2022-07-22 17:01:23,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:01:23,869 INFO L495 AbstractCegarLoop]: Abstraction has 22842 states and 37633 transitions. [2022-07-22 17:01:23,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-22 17:01:23,869 INFO L276 IsEmpty]: Start isEmpty. Operand 22842 states and 37633 transitions. [2022-07-22 17:01:23,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-22 17:01:23,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:01:23,885 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 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] [2022-07-22 17:01:23,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-07-22 17:01:24,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:01:24,111 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:01:24,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:01:24,111 INFO L85 PathProgramCache]: Analyzing trace with hash -240028446, now seen corresponding path program 1 times [2022-07-22 17:01:24,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:01:24,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511067373] [2022-07-22 17:01:24,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:01:24,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:01:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:01:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:01:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:01:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 17:01:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:01:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:01:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:01:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:01:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:01:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:01:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:01:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:01:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:01:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:01:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:01:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:01:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:01:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:01:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:01:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 17:01:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 17:01:24,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:01:24,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511067373] [2022-07-22 17:01:24,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511067373] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:01:24,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644265842] [2022-07-22 17:01:24,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:01:24,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:01:24,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:01:24,632 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) [2022-07-22 17:01:24,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-07-22 17:01:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:01:24,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 2030 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-22 17:01:24,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:01:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 17:01:25,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:01:25,787 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-22 17:01:25,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644265842] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:01:25,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:01:25,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 25 [2022-07-22 17:01:25,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912635697] [2022-07-22 17:01:25,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:01:25,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 17:01:25,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:01:25,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 17:01:25,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2022-07-22 17:01:25,790 INFO L87 Difference]: Start difference. First operand 22842 states and 37633 transitions. Second operand has 25 states, 25 states have (on average 11.36) internal successors, (284), 18 states have internal predecessors, (284), 9 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (50), 14 states have call predecessors, (50), 9 states have call successors, (50) [2022-07-22 17:02:18,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:02:18,142 INFO L93 Difference]: Finished difference Result 115859 states and 221125 transitions. [2022-07-22 17:02:18,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-07-22 17:02:18,143 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 11.36) internal successors, (284), 18 states have internal predecessors, (284), 9 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (50), 14 states have call predecessors, (50), 9 states have call successors, (50) Word has length 202 [2022-07-22 17:02:18,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:02:19,312 INFO L225 Difference]: With dead ends: 115859 [2022-07-22 17:02:19,312 INFO L226 Difference]: Without dead ends: 94994 [2022-07-22 17:02:19,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 446 SyntacticMatches, 6 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4048 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1768, Invalid=10888, Unknown=0, NotChecked=0, Total=12656 [2022-07-22 17:02:19,480 INFO L413 NwaCegarLoop]: 2672 mSDtfsCounter, 11101 mSDsluCounter, 12796 mSDsCounter, 0 mSdLazyCounter, 30084 mSolverCounterSat, 6486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11115 SdHoareTripleChecker+Valid, 15468 SdHoareTripleChecker+Invalid, 36570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 6486 IncrementalHoareTripleChecker+Valid, 30084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:02:19,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11115 Valid, 15468 Invalid, 36570 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [6486 Valid, 30084 Invalid, 0 Unknown, 0 Unchecked, 21.5s Time] [2022-07-22 17:02:19,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94994 states. [2022-07-22 17:02:32,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94994 to 61853. [2022-07-22 17:02:32,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61853 states, 46222 states have (on average 1.53455064687811) internal successors, (70930), 48867 states have internal predecessors, (70930), 12228 states have call successors, (12228), 2248 states have call predecessors, (12228), 3402 states have return successors, (22162), 12461 states have call predecessors, (22162), 12223 states have call successors, (22162) [2022-07-22 17:02:33,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61853 states to 61853 states and 105320 transitions. [2022-07-22 17:02:33,433 INFO L78 Accepts]: Start accepts. Automaton has 61853 states and 105320 transitions. Word has length 202 [2022-07-22 17:02:33,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:02:33,434 INFO L495 AbstractCegarLoop]: Abstraction has 61853 states and 105320 transitions. [2022-07-22 17:02:33,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.36) internal successors, (284), 18 states have internal predecessors, (284), 9 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (50), 14 states have call predecessors, (50), 9 states have call successors, (50) [2022-07-22 17:02:33,434 INFO L276 IsEmpty]: Start isEmpty. Operand 61853 states and 105320 transitions. [2022-07-22 17:02:33,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-22 17:02:33,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:02:33,458 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 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] [2022-07-22 17:02:33,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-07-22 17:02:33,658 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 [2022-07-22 17:02:33,659 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:02:33,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:02:33,659 INFO L85 PathProgramCache]: Analyzing trace with hash 166749591, now seen corresponding path program 1 times [2022-07-22 17:02:33,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:02:33,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809349060] [2022-07-22 17:02:33,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:02:33,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:02:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:33,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:02:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:33,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:02:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:33,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:02:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:33,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 17:02:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:33,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:02:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:33,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:02:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:33,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:02:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:33,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:02:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:33,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:02:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:34,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:02:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:34,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:02:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:34,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:02:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:34,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:02:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:34,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:02:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:34,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:02:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:34,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:02:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:34,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:02:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:34,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:02:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:34,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:02:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 17:02:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-22 17:02:34,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:02:34,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809349060] [2022-07-22 17:02:34,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809349060] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:02:34,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871134307] [2022-07-22 17:02:34,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:02:34,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:02:34,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:02:34,035 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) [2022-07-22 17:02:34,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-07-22 17:02:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:02:34,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 2031 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:02:34,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:02:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-22 17:02:34,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:02:34,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871134307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:02:34,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:02:34,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-22 17:02:34,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836530535] [2022-07-22 17:02:34,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:02:34,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:02:34,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:02:34,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:02:34,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:02:34,322 INFO L87 Difference]: Start difference. First operand 61853 states and 105320 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)