./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec9_product26.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 d5d3c0f581b3d52ccfb3e43d6fb6458a66cd40c307750c0d7336040b60b78e76 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:02:02,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:02:02,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:02:02,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:02:02,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:02:02,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:02:02,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:02:02,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:02:02,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:02:02,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:02:02,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:02:02,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:02:02,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:02:02,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:02:02,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:02:02,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:02:02,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:02:02,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:02:02,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:02:02,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:02:02,356 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:02:02,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:02:02,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:02:02,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:02:02,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:02:02,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:02:02,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:02:02,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:02:02,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:02:02,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:02:02,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:02:02,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:02:02,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:02:02,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:02:02,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:02:02,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:02:02,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:02:02,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:02:02,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:02:02,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:02:02,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:02:02,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:02:02,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:02:02,391 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:02:02,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:02:02,391 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:02:02,392 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:02:02,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:02:02,393 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:02:02,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:02:02,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:02:02,393 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:02:02,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:02:02,394 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:02:02,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:02:02,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:02:02,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:02:02,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:02:02,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:02:02,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:02:02,395 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:02:02,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:02:02,396 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:02:02,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:02:02,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:02:02,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:02:02,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:02:02,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:02:02,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:02:02,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:02:02,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:02:02,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:02:02,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:02:02,398 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:02:02,398 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:02:02,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:02:02,398 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5d3c0f581b3d52ccfb3e43d6fb6458a66cd40c307750c0d7336040b60b78e76 [2022-07-19 17:02:02,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:02:02,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:02:02,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:02:02,653 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:02:02,654 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:02:02,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c [2022-07-19 17:02:02,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee8c917d2/47b9c86641334c1cbffe9756b0ef7798/FLAG5941721af [2022-07-19 17:02:03,251 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:02:03,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c [2022-07-19 17:02:03,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee8c917d2/47b9c86641334c1cbffe9756b0ef7798/FLAG5941721af [2022-07-19 17:02:03,682 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee8c917d2/47b9c86641334c1cbffe9756b0ef7798 [2022-07-19 17:02:03,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:02:03,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:02:03,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:02:03,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:02:03,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:02:03,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:02:03" (1/1) ... [2022-07-19 17:02:03,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@310e227a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:03, skipping insertion in model container [2022-07-19 17:02:03,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:02:03" (1/1) ... [2022-07-19 17:02:03,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:02:03,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:02:04,137 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_spec9_product26.cil.c[46529,46542] [2022-07-19 17:02:04,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:02:04,202 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:02:04,282 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_spec9_product26.cil.c[46529,46542] [2022-07-19 17:02:04,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:02:04,355 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:02:04,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:04 WrapperNode [2022-07-19 17:02:04,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:02:04,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:02:04,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:02:04,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:02:04,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:04" (1/1) ... [2022-07-19 17:02:04,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:04" (1/1) ... [2022-07-19 17:02:04,441 INFO L137 Inliner]: procedures = 93, calls = 337, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 814 [2022-07-19 17:02:04,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:02:04,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:02:04,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:02:04,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:02:04,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:04" (1/1) ... [2022-07-19 17:02:04,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:04" (1/1) ... [2022-07-19 17:02:04,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:04" (1/1) ... [2022-07-19 17:02:04,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:04" (1/1) ... [2022-07-19 17:02:04,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:04" (1/1) ... [2022-07-19 17:02:04,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:04" (1/1) ... [2022-07-19 17:02:04,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:04" (1/1) ... [2022-07-19 17:02:04,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:02:04,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:02:04,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:02:04,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:02:04,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:04" (1/1) ... [2022-07-19 17:02:04,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:02:04,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:02:04,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 17:02:04,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 17:02:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:02:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-19 17:02:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-19 17:02:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-19 17:02:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-19 17:02:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-19 17:02:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-19 17:02:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-19 17:02:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-19 17:02:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-19 17:02:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-19 17:02:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-19 17:02:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-19 17:02:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-19 17:02:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-19 17:02:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-19 17:02:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-19 17:02:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-19 17:02:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-19 17:02:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-19 17:02:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-19 17:02:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-19 17:02:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-19 17:02:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-19 17:02:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-19 17:02:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-19 17:02:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-19 17:02:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-19 17:02:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-19 17:02:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2022-07-19 17:02:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2022-07-19 17:02:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-19 17:02:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-19 17:02:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-19 17:02:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-19 17:02:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-19 17:02:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-19 17:02:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2022-07-19 17:02:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2022-07-19 17:02:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:02:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-19 17:02:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-19 17:02:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-19 17:02:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-19 17:02:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-19 17:02:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-19 17:02:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:02:04,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:02:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-19 17:02:04,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-19 17:02:04,799 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:02:04,802 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:02:05,664 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:02:05,681 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:02:05,681 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 17:02:05,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:02:05 BoogieIcfgContainer [2022-07-19 17:02:05,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:02:05,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:02:05,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:02:05,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:02:05,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:02:03" (1/3) ... [2022-07-19 17:02:05,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ac9f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:02:05, skipping insertion in model container [2022-07-19 17:02:05,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:02:04" (2/3) ... [2022-07-19 17:02:05,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ac9f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:02:05, skipping insertion in model container [2022-07-19 17:02:05,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:02:05" (3/3) ... [2022-07-19 17:02:05,695 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product26.cil.c [2022-07-19 17:02:05,707 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:02:05,707 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:02:05,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:02:05,794 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@55a938e3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@33600027 [2022-07-19 17:02:05,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:02:05,800 INFO L276 IsEmpty]: Start isEmpty. Operand has 545 states, 431 states have (on average 1.7076566125290022) internal successors, (736), 454 states have internal predecessors, (736), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (89), 82 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-19 17:02:05,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-19 17:02:05,814 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:05,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:05,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:05,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:05,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1868940779, now seen corresponding path program 1 times [2022-07-19 17:02:05,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:05,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659616555] [2022-07-19 17:02:05,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:05,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:06,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:06,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:02:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:06,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 17:02:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:06,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:06,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:06,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:02:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:06,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:06,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:06,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659616555] [2022-07-19 17:02:06,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659616555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:06,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:06,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:02:06,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185219239] [2022-07-19 17:02:06,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:06,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:02:06,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:06,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:02:06,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:02:06,693 INFO L87 Difference]: Start difference. First operand has 545 states, 431 states have (on average 1.7076566125290022) internal successors, (736), 454 states have internal predecessors, (736), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (89), 82 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:11,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:11,195 INFO L93 Difference]: Finished difference Result 1223 states and 2080 transitions. [2022-07-19 17:02:11,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:02:11,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2022-07-19 17:02:11,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:11,224 INFO L225 Difference]: With dead ends: 1223 [2022-07-19 17:02:11,225 INFO L226 Difference]: Without dead ends: 690 [2022-07-19 17:02:11,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:02:11,238 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 666 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 2401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:11,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1670 Invalid, 2401 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [129 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-19 17:02:11,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-07-19 17:02:11,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-07-19 17:02:11,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.703529411764706) internal successors, (724), 446 states have internal predecessors, (724), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-19 17:02:11,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 897 transitions. [2022-07-19 17:02:11,390 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 897 transitions. Word has length 58 [2022-07-19 17:02:11,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:11,395 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 897 transitions. [2022-07-19 17:02:11,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:11,396 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 897 transitions. [2022-07-19 17:02:11,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-19 17:02:11,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:11,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:11,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 17:02:11,406 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:11,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:11,408 INFO L85 PathProgramCache]: Analyzing trace with hash 49721393, now seen corresponding path program 1 times [2022-07-19 17:02:11,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:11,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922546820] [2022-07-19 17:02:11,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:11,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:11,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:11,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:11,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:11,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 17:02:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:11,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:11,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:11,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:02:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:11,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:11,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:11,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922546820] [2022-07-19 17:02:11,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922546820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:11,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:11,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:02:11,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082559333] [2022-07-19 17:02:11,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:11,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:02:11,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:11,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:02:11,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:02:11,794 INFO L87 Difference]: Start difference. First operand 537 states and 897 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:15,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:15,900 INFO L93 Difference]: Finished difference Result 1209 states and 2046 transitions. [2022-07-19 17:02:15,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:02:15,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2022-07-19 17:02:15,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:15,909 INFO L225 Difference]: With dead ends: 1209 [2022-07-19 17:02:15,909 INFO L226 Difference]: Without dead ends: 690 [2022-07-19 17:02:15,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:02:15,913 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 663 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:15,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1634 Invalid, 2397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-19 17:02:15,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-07-19 17:02:15,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-07-19 17:02:15,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.7011764705882353) internal successors, (723), 446 states have internal predecessors, (723), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-19 17:02:15,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 896 transitions. [2022-07-19 17:02:15,972 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 896 transitions. Word has length 61 [2022-07-19 17:02:15,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:15,972 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 896 transitions. [2022-07-19 17:02:15,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:15,973 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 896 transitions. [2022-07-19 17:02:15,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-19 17:02:15,975 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:15,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:15,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 17:02:15,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:15,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:15,976 INFO L85 PathProgramCache]: Analyzing trace with hash -343579, now seen corresponding path program 1 times [2022-07-19 17:02:15,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:15,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806243561] [2022-07-19 17:02:15,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:15,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:16,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:16,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:16,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 17:02:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:16,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 17:02:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:16,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:16,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:16,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:02:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:16,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:16,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806243561] [2022-07-19 17:02:16,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806243561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:16,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:16,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:02:16,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364041249] [2022-07-19 17:02:16,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:16,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:02:16,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:16,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:02:16,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:02:16,306 INFO L87 Difference]: Start difference. First operand 537 states and 896 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:19,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:19,907 INFO L93 Difference]: Finished difference Result 1209 states and 2045 transitions. [2022-07-19 17:02:19,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:02:19,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2022-07-19 17:02:19,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:19,912 INFO L225 Difference]: With dead ends: 1209 [2022-07-19 17:02:19,913 INFO L226 Difference]: Without dead ends: 690 [2022-07-19 17:02:19,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:02:19,916 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 660 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:19,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 1631 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-19 17:02:19,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-07-19 17:02:19,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-07-19 17:02:19,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6988235294117646) internal successors, (722), 446 states have internal predecessors, (722), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-19 17:02:19,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 895 transitions. [2022-07-19 17:02:19,965 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 895 transitions. Word has length 62 [2022-07-19 17:02:19,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:19,965 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 895 transitions. [2022-07-19 17:02:19,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:19,966 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 895 transitions. [2022-07-19 17:02:19,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-19 17:02:19,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:19,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:19,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 17:02:19,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:19,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:19,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1969000915, now seen corresponding path program 1 times [2022-07-19 17:02:19,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:19,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942171048] [2022-07-19 17:02:19,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:19,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:20,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:20,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:20,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:02:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:20,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:02:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:20,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:20,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:20,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:02:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:20,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:20,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:20,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942171048] [2022-07-19 17:02:20,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942171048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:20,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:20,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:02:20,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444793150] [2022-07-19 17:02:20,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:20,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:02:20,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:20,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:02:20,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:02:20,288 INFO L87 Difference]: Start difference. First operand 537 states and 895 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:23,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:23,586 INFO L93 Difference]: Finished difference Result 1209 states and 2044 transitions. [2022-07-19 17:02:23,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:02:23,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-07-19 17:02:23,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:23,591 INFO L225 Difference]: With dead ends: 1209 [2022-07-19 17:02:23,592 INFO L226 Difference]: Without dead ends: 690 [2022-07-19 17:02:23,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:02:23,595 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 1095 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 2348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:23,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 1612 Invalid, 2348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 17:02:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-07-19 17:02:23,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-07-19 17:02:23,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6964705882352942) internal successors, (721), 446 states have internal predecessors, (721), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-19 17:02:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 894 transitions. [2022-07-19 17:02:23,642 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 894 transitions. Word has length 63 [2022-07-19 17:02:23,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:23,643 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 894 transitions. [2022-07-19 17:02:23,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:23,643 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 894 transitions. [2022-07-19 17:02:23,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 17:02:23,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:23,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:23,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 17:02:23,645 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:23,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:23,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1010487905, now seen corresponding path program 1 times [2022-07-19 17:02:23,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:23,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340578850] [2022-07-19 17:02:23,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:23,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:23,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:23,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 17:02:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:23,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 17:02:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:23,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:23,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:23,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:02:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:23,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:23,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340578850] [2022-07-19 17:02:23,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340578850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:23,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:23,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:02:23,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261616400] [2022-07-19 17:02:23,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:23,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:02:23,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:23,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:02:23,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:02:23,964 INFO L87 Difference]: Start difference. First operand 537 states and 894 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:27,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:27,293 INFO L93 Difference]: Finished difference Result 1209 states and 2043 transitions. [2022-07-19 17:02:27,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:02:27,295 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-07-19 17:02:27,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:27,299 INFO L225 Difference]: With dead ends: 1209 [2022-07-19 17:02:27,299 INFO L226 Difference]: Without dead ends: 690 [2022-07-19 17:02:27,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:02:27,302 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 654 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:27,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 1614 Invalid, 2393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2260 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 17:02:27,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-07-19 17:02:27,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-07-19 17:02:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6941176470588235) internal successors, (720), 446 states have internal predecessors, (720), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-19 17:02:27,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 893 transitions. [2022-07-19 17:02:27,347 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 893 transitions. Word has length 64 [2022-07-19 17:02:27,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:27,347 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 893 transitions. [2022-07-19 17:02:27,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:27,348 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 893 transitions. [2022-07-19 17:02:27,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 17:02:27,349 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:27,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:27,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 17:02:27,350 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:27,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:27,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1531282391, now seen corresponding path program 1 times [2022-07-19 17:02:27,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:27,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57567485] [2022-07-19 17:02:27,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:27,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:27,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:27,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:27,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:02:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:27,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 17:02:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:27,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:27,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:27,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:02:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:27,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:27,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:27,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57567485] [2022-07-19 17:02:27,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57567485] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:27,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:27,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:02:27,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272643472] [2022-07-19 17:02:27,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:27,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:02:27,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:27,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:02:27,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:02:27,664 INFO L87 Difference]: Start difference. First operand 537 states and 893 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:31,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:31,073 INFO L93 Difference]: Finished difference Result 1169 states and 1967 transitions. [2022-07-19 17:02:31,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:02:31,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-19 17:02:31,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:31,078 INFO L225 Difference]: With dead ends: 1169 [2022-07-19 17:02:31,078 INFO L226 Difference]: Without dead ends: 690 [2022-07-19 17:02:31,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:02:31,081 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 720 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 2399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:31,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1553 Invalid, 2399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 17:02:31,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-07-19 17:02:31,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-07-19 17:02:31,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6823529411764706) internal successors, (715), 446 states have internal predecessors, (715), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-19 17:02:31,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 888 transitions. [2022-07-19 17:02:31,127 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 888 transitions. Word has length 65 [2022-07-19 17:02:31,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:31,127 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 888 transitions. [2022-07-19 17:02:31,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:31,128 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 888 transitions. [2022-07-19 17:02:31,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 17:02:31,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:31,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:31,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 17:02:31,130 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:31,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:31,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1625150366, now seen corresponding path program 1 times [2022-07-19 17:02:31,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:31,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485139850] [2022-07-19 17:02:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:31,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:31,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:31,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:31,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:02:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:31,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 17:02:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:31,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:31,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:31,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:02:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:31,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:31,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485139850] [2022-07-19 17:02:31,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485139850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:31,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:31,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:02:31,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214409158] [2022-07-19 17:02:31,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:31,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:02:31,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:31,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:02:31,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:02:31,429 INFO L87 Difference]: Start difference. First operand 537 states and 888 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:34,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:34,658 INFO L93 Difference]: Finished difference Result 1169 states and 1962 transitions. [2022-07-19 17:02:34,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:02:34,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-19 17:02:34,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:34,662 INFO L225 Difference]: With dead ends: 1169 [2022-07-19 17:02:34,662 INFO L226 Difference]: Without dead ends: 690 [2022-07-19 17:02:34,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:02:34,665 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 719 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 2374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:34,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1553 Invalid, 2374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-19 17:02:34,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-07-19 17:02:34,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-07-19 17:02:34,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6705882352941177) internal successors, (710), 446 states have internal predecessors, (710), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-19 17:02:34,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 883 transitions. [2022-07-19 17:02:34,711 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 883 transitions. Word has length 66 [2022-07-19 17:02:34,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:34,711 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 883 transitions. [2022-07-19 17:02:34,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:34,712 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 883 transitions. [2022-07-19 17:02:34,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 17:02:34,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:34,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:34,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 17:02:34,714 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:34,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:34,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1328457138, now seen corresponding path program 1 times [2022-07-19 17:02:34,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:34,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181719922] [2022-07-19 17:02:34,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:34,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:34,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:34,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:34,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:02:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:02:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:35,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:35,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:35,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:02:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:35,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:35,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181719922] [2022-07-19 17:02:35,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181719922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:35,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:35,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:02:35,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68503348] [2022-07-19 17:02:35,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:35,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:02:35,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:35,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:02:35,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:02:35,020 INFO L87 Difference]: Start difference. First operand 537 states and 883 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:37,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:37,825 INFO L93 Difference]: Finished difference Result 1169 states and 1957 transitions. [2022-07-19 17:02:37,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:02:37,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-07-19 17:02:37,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:37,830 INFO L225 Difference]: With dead ends: 1169 [2022-07-19 17:02:37,830 INFO L226 Difference]: Without dead ends: 690 [2022-07-19 17:02:37,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:02:37,833 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 1164 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 2028 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 2314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 2028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:37,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 1535 Invalid, 2314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 2028 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-19 17:02:37,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-07-19 17:02:37,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2022-07-19 17:02:37,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6588235294117648) internal successors, (705), 446 states have internal predecessors, (705), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-19 17:02:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 878 transitions. [2022-07-19 17:02:37,892 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 878 transitions. Word has length 67 [2022-07-19 17:02:37,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:37,892 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 878 transitions. [2022-07-19 17:02:37,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:37,893 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 878 transitions. [2022-07-19 17:02:37,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 17:02:37,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:37,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:37,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 17:02:37,895 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:37,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:37,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1284448200, now seen corresponding path program 1 times [2022-07-19 17:02:37,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:37,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022968584] [2022-07-19 17:02:37,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:37,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:37,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:37,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:37,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:02:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:38,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:02:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:38,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:38,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:38,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:02:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:38,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:38,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022968584] [2022-07-19 17:02:38,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022968584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:38,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:38,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:02:38,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864594852] [2022-07-19 17:02:38,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:38,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:02:38,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:38,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:02:38,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:02:38,174 INFO L87 Difference]: Start difference. First operand 537 states and 878 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:41,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:41,321 INFO L93 Difference]: Finished difference Result 1184 states and 1972 transitions. [2022-07-19 17:02:41,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 17:02:41,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-07-19 17:02:41,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:41,324 INFO L225 Difference]: With dead ends: 1184 [2022-07-19 17:02:41,324 INFO L226 Difference]: Without dead ends: 711 [2022-07-19 17:02:41,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:02:41,327 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 1172 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 2296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:41,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 1560 Invalid, 2296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 17:02:41,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-07-19 17:02:41,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 539. [2022-07-19 17:02:41,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 427 states have (on average 1.6557377049180328) internal successors, (707), 448 states have internal predecessors, (707), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-19 17:02:41,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 880 transitions. [2022-07-19 17:02:41,383 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 880 transitions. Word has length 68 [2022-07-19 17:02:41,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:41,383 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 880 transitions. [2022-07-19 17:02:41,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:41,384 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 880 transitions. [2022-07-19 17:02:41,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 17:02:41,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:41,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:41,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 17:02:41,388 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:41,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:41,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1809268505, now seen corresponding path program 1 times [2022-07-19 17:02:41,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:41,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813385959] [2022-07-19 17:02:41,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:41,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:41,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:41,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:41,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:02:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:41,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:02:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:41,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:41,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:41,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:02:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:41,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:41,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813385959] [2022-07-19 17:02:41,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813385959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:41,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:41,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:02:41,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556615538] [2022-07-19 17:02:41,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:41,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:02:41,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:41,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:02:41,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:02:41,711 INFO L87 Difference]: Start difference. First operand 539 states and 880 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:44,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:44,972 INFO L93 Difference]: Finished difference Result 1175 states and 1958 transitions. [2022-07-19 17:02:44,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:02:44,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-07-19 17:02:44,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:44,976 INFO L225 Difference]: With dead ends: 1175 [2022-07-19 17:02:44,976 INFO L226 Difference]: Without dead ends: 694 [2022-07-19 17:02:44,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:02:44,979 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 727 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 2323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:44,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 1554 Invalid, 2323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-19 17:02:44,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-07-19 17:02:45,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 539. [2022-07-19 17:02:45,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 427 states have (on average 1.6440281030444965) internal successors, (702), 448 states have internal predecessors, (702), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-19 17:02:45,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 875 transitions. [2022-07-19 17:02:45,026 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 875 transitions. Word has length 68 [2022-07-19 17:02:45,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:45,027 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 875 transitions. [2022-07-19 17:02:45,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:45,027 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 875 transitions. [2022-07-19 17:02:45,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-19 17:02:45,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:45,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:45,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 17:02:45,029 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:45,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:45,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1924060336, now seen corresponding path program 1 times [2022-07-19 17:02:45,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:45,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41557174] [2022-07-19 17:02:45,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:45,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:45,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:45,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:45,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:02:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:45,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:02:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:45,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:45,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:45,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:02:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:45,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:45,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:45,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41557174] [2022-07-19 17:02:45,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41557174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:45,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:45,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:02:45,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101690602] [2022-07-19 17:02:45,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:45,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:02:45,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:45,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:02:45,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:02:45,347 INFO L87 Difference]: Start difference. First operand 539 states and 875 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:48,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:48,734 INFO L93 Difference]: Finished difference Result 1188 states and 1969 transitions. [2022-07-19 17:02:48,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 17:02:48,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-07-19 17:02:48,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:48,738 INFO L225 Difference]: With dead ends: 1188 [2022-07-19 17:02:48,738 INFO L226 Difference]: Without dead ends: 715 [2022-07-19 17:02:48,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:02:48,740 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 729 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:48,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 1564 Invalid, 2300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 17:02:48,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-07-19 17:02:48,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 542. [2022-07-19 17:02:48,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 430 states have (on average 1.6395348837209303) internal successors, (705), 451 states have internal predecessors, (705), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-19 17:02:48,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 878 transitions. [2022-07-19 17:02:48,787 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 878 transitions. Word has length 69 [2022-07-19 17:02:48,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:48,788 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 878 transitions. [2022-07-19 17:02:48,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:48,788 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 878 transitions. [2022-07-19 17:02:48,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-19 17:02:48,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:48,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:48,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 17:02:48,790 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:48,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:48,790 INFO L85 PathProgramCache]: Analyzing trace with hash -622918541, now seen corresponding path program 1 times [2022-07-19 17:02:48,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:48,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369979469] [2022-07-19 17:02:48,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:48,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:48,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:48,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:48,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:02:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:49,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:02:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:49,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:49,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:49,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:02:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:49,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:49,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:49,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369979469] [2022-07-19 17:02:49,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369979469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:49,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:49,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:02:49,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449964774] [2022-07-19 17:02:49,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:49,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:02:49,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:49,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:02:49,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:02:49,087 INFO L87 Difference]: Start difference. First operand 542 states and 878 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:51,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:51,943 INFO L93 Difference]: Finished difference Result 1184 states and 1962 transitions. [2022-07-19 17:02:51,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:02:51,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-07-19 17:02:51,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:51,947 INFO L225 Difference]: With dead ends: 1184 [2022-07-19 17:02:51,948 INFO L226 Difference]: Without dead ends: 700 [2022-07-19 17:02:51,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:02:51,950 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 1160 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:51,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 1545 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-19 17:02:51,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-07-19 17:02:51,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 542. [2022-07-19 17:02:51,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 430 states have (on average 1.627906976744186) internal successors, (700), 451 states have internal predecessors, (700), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-19 17:02:51,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 873 transitions. [2022-07-19 17:02:52,000 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 873 transitions. Word has length 69 [2022-07-19 17:02:52,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:52,000 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 873 transitions. [2022-07-19 17:02:52,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:52,000 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 873 transitions. [2022-07-19 17:02:52,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 17:02:52,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:52,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:52,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 17:02:52,002 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:52,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:52,002 INFO L85 PathProgramCache]: Analyzing trace with hash -41250547, now seen corresponding path program 1 times [2022-07-19 17:02:52,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:52,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871617087] [2022-07-19 17:02:52,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:52,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:52,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:52,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:52,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:02:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:52,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 17:02:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:52,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:52,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:52,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:02:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:52,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:52,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871617087] [2022-07-19 17:02:52,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871617087] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:52,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:52,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:02:52,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523257093] [2022-07-19 17:02:52,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:52,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:02:52,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:52,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:02:52,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:02:52,288 INFO L87 Difference]: Start difference. First operand 542 states and 873 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:55,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:55,923 INFO L93 Difference]: Finished difference Result 1194 states and 1968 transitions. [2022-07-19 17:02:55,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 17:02:55,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-07-19 17:02:55,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:55,927 INFO L225 Difference]: With dead ends: 1194 [2022-07-19 17:02:55,927 INFO L226 Difference]: Without dead ends: 721 [2022-07-19 17:02:55,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:02:55,929 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 720 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:55,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1562 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 17:02:55,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-07-19 17:02:55,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 546. [2022-07-19 17:02:55,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 434 states have (on average 1.6221198156682028) internal successors, (704), 455 states have internal predecessors, (704), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2022-07-19 17:02:55,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 877 transitions. [2022-07-19 17:02:55,981 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 877 transitions. Word has length 70 [2022-07-19 17:02:55,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:55,981 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 877 transitions. [2022-07-19 17:02:55,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:02:55,982 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 877 transitions. [2022-07-19 17:02:55,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 17:02:55,983 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:55,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:55,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 17:02:55,984 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:55,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:55,984 INFO L85 PathProgramCache]: Analyzing trace with hash 705825132, now seen corresponding path program 1 times [2022-07-19 17:02:55,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:55,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603514567] [2022-07-19 17:02:55,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:55,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:56,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:02:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:56,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:02:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:56,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 17:02:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:56,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:56,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:56,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:02:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:56,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:02:56,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:56,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603514567] [2022-07-19 17:02:56,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603514567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:56,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:56,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 17:02:56,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751994735] [2022-07-19 17:02:56,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:56,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 17:02:56,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:56,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 17:02:56,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:02:56,373 INFO L87 Difference]: Start difference. First operand 546 states and 877 transitions. Second operand has 12 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 17:03:01,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:01,950 INFO L93 Difference]: Finished difference Result 1212 states and 2000 transitions. [2022-07-19 17:03:01,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 17:03:01,951 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2022-07-19 17:03:01,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:01,957 INFO L225 Difference]: With dead ends: 1212 [2022-07-19 17:03:01,958 INFO L226 Difference]: Without dead ends: 742 [2022-07-19 17:03:01,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-07-19 17:03:01,962 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 788 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 6568 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 6714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 6568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:01,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 3371 Invalid, 6714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 6568 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-19 17:03:01,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-07-19 17:03:02,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 561. [2022-07-19 17:03:02,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 445 states have (on average 1.6112359550561797) internal successors, (717), 468 states have internal predecessors, (717), 90 states have call successors, (90), 23 states have call predecessors, (90), 25 states have return successors, (89), 83 states have call predecessors, (89), 85 states have call successors, (89) [2022-07-19 17:03:02,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 896 transitions. [2022-07-19 17:03:02,032 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 896 transitions. Word has length 70 [2022-07-19 17:03:02,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:02,033 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 896 transitions. [2022-07-19 17:03:02,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 17:03:02,033 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 896 transitions. [2022-07-19 17:03:02,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-19 17:03:02,035 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:02,035 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:03:02,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 17:03:02,035 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:02,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:02,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2083828554, now seen corresponding path program 1 times [2022-07-19 17:03:02,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:02,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190197345] [2022-07-19 17:03:02,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:02,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:02,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:02,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:02,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:02,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 17:03:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:02,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:02,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:02,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:03:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:02,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 17:03:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 17:03:02,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:03:02,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190197345] [2022-07-19 17:03:02,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190197345] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:03:02,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:03:02,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:03:02,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905029765] [2022-07-19 17:03:02,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:03:02,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:03:02,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:03:02,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:03:02,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:03:02,319 INFO L87 Difference]: Start difference. First operand 561 states and 896 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:03:05,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:05,207 INFO L93 Difference]: Finished difference Result 1267 states and 2057 transitions. [2022-07-19 17:03:05,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:03:05,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2022-07-19 17:03:05,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:05,210 INFO L225 Difference]: With dead ends: 1267 [2022-07-19 17:03:05,210 INFO L226 Difference]: Without dead ends: 704 [2022-07-19 17:03:05,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:03:05,213 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 1080 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:05,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1586 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 17:03:05,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-07-19 17:03:05,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 542. [2022-07-19 17:03:05,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.6200466200466201) internal successors, (695), 450 states have internal predecessors, (695), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (86), 82 states have call predecessors, (86), 84 states have call successors, (86) [2022-07-19 17:03:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 870 transitions. [2022-07-19 17:03:05,268 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 870 transitions. Word has length 76 [2022-07-19 17:03:05,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:05,268 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 870 transitions. [2022-07-19 17:03:05,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:03:05,268 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 870 transitions. [2022-07-19 17:03:05,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 17:03:05,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:05,270 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:03:05,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 17:03:05,270 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:05,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:05,271 INFO L85 PathProgramCache]: Analyzing trace with hash 715869938, now seen corresponding path program 1 times [2022-07-19 17:03:05,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:05,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033913467] [2022-07-19 17:03:05,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:05,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:05,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:05,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:05,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:05,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 17:03:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:05,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:05,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:05,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:03:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:05,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 17:03:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 17:03:05,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:03:05,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033913467] [2022-07-19 17:03:05,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033913467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:03:05,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:03:05,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 17:03:05,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574547290] [2022-07-19 17:03:05,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:03:05,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 17:03:05,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:03:05,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 17:03:05,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:03:05,638 INFO L87 Difference]: Start difference. First operand 542 states and 870 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:03:12,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:12,815 INFO L93 Difference]: Finished difference Result 1504 states and 2483 transitions. [2022-07-19 17:03:12,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 17:03:12,816 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 77 [2022-07-19 17:03:12,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:12,822 INFO L225 Difference]: With dead ends: 1504 [2022-07-19 17:03:12,822 INFO L226 Difference]: Without dead ends: 1027 [2022-07-19 17:03:12,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2022-07-19 17:03:12,825 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 2267 mSDsluCounter, 2364 mSDsCounter, 0 mSdLazyCounter, 7718 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2330 SdHoareTripleChecker+Valid, 3236 SdHoareTripleChecker+Invalid, 8292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 7718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:12,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2330 Valid, 3236 Invalid, 8292 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [574 Valid, 7718 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-19 17:03:12,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-07-19 17:03:12,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 765. [2022-07-19 17:03:12,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 611 states have (on average 1.6219312602291325) internal successors, (991), 632 states have internal predecessors, (991), 119 states have call successors, (119), 33 states have call predecessors, (119), 34 states have return successors, (122), 113 states have call predecessors, (122), 114 states have call successors, (122) [2022-07-19 17:03:12,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1232 transitions. [2022-07-19 17:03:12,920 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1232 transitions. Word has length 77 [2022-07-19 17:03:12,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:12,920 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1232 transitions. [2022-07-19 17:03:12,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:03:12,921 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1232 transitions. [2022-07-19 17:03:12,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 17:03:12,922 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:12,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:03:12,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 17:03:12,923 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:12,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:12,923 INFO L85 PathProgramCache]: Analyzing trace with hash -240927220, now seen corresponding path program 1 times [2022-07-19 17:03:12,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:12,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032390044] [2022-07-19 17:03:12,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:12,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:13,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:13,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:13,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:13,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:03:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:13,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:13,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:13,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:03:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:03:13,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:03:13,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032390044] [2022-07-19 17:03:13,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032390044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:03:13,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:03:13,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:03:13,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251883951] [2022-07-19 17:03:13,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:03:13,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:03:13,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:03:13,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:03:13,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:03:13,220 INFO L87 Difference]: Start difference. First operand 765 states and 1232 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:03:16,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:16,533 INFO L93 Difference]: Finished difference Result 1668 states and 2736 transitions. [2022-07-19 17:03:16,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:03:16,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2022-07-19 17:03:16,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:16,538 INFO L225 Difference]: With dead ends: 1668 [2022-07-19 17:03:16,539 INFO L226 Difference]: Without dead ends: 952 [2022-07-19 17:03:16,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:03:16,541 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 693 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 2243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:16,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1563 Invalid, 2243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2108 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 17:03:16,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-07-19 17:03:16,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 765. [2022-07-19 17:03:16,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 611 states have (on average 1.6153846153846154) internal successors, (987), 632 states have internal predecessors, (987), 119 states have call successors, (119), 33 states have call predecessors, (119), 34 states have return successors, (122), 113 states have call predecessors, (122), 114 states have call successors, (122) [2022-07-19 17:03:16,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1228 transitions. [2022-07-19 17:03:16,640 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1228 transitions. Word has length 77 [2022-07-19 17:03:16,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:16,640 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1228 transitions. [2022-07-19 17:03:16,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 17:03:16,641 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1228 transitions. [2022-07-19 17:03:16,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 17:03:16,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:16,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:03:16,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 17:03:16,643 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:16,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:16,644 INFO L85 PathProgramCache]: Analyzing trace with hash 112161162, now seen corresponding path program 1 times [2022-07-19 17:03:16,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:16,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497579652] [2022-07-19 17:03:16,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:16,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:16,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:16,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:16,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:16,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:03:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:16,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:16,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:16,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 17:03:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:16,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:03:16,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:03:16,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497579652] [2022-07-19 17:03:16,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497579652] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:03:16,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:03:16,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:03:16,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023270174] [2022-07-19 17:03:16,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:03:16,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:03:16,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:03:16,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:03:16,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:03:16,992 INFO L87 Difference]: Start difference. First operand 765 states and 1228 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 17:03:24,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:24,456 INFO L93 Difference]: Finished difference Result 2671 states and 4478 transitions. [2022-07-19 17:03:24,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 17:03:24,456 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 77 [2022-07-19 17:03:24,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:24,465 INFO L225 Difference]: With dead ends: 2671 [2022-07-19 17:03:24,465 INFO L226 Difference]: Without dead ends: 1985 [2022-07-19 17:03:24,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:03:24,469 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 2568 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 4409 mSolverCounterSat, 713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2645 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 5122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 4409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:24,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2645 Valid, 2121 Invalid, 5122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 4409 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-07-19 17:03:24,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-07-19 17:03:24,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1455. [2022-07-19 17:03:24,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1166 states have (on average 1.6423670668953687) internal successors, (1915), 1196 states have internal predecessors, (1915), 223 states have call successors, (223), 59 states have call predecessors, (223), 65 states have return successors, (243), 212 states have call predecessors, (243), 218 states have call successors, (243) [2022-07-19 17:03:24,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 2381 transitions. [2022-07-19 17:03:24,686 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 2381 transitions. Word has length 77 [2022-07-19 17:03:24,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:24,686 INFO L495 AbstractCegarLoop]: Abstraction has 1455 states and 2381 transitions. [2022-07-19 17:03:24,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 17:03:24,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 2381 transitions. [2022-07-19 17:03:24,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-19 17:03:24,690 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:24,691 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:03:24,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 17:03:24,691 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:24,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:24,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1484179961, now seen corresponding path program 1 times [2022-07-19 17:03:24,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:24,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581501614] [2022-07-19 17:03:24,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:24,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:24,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:24,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:24,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:03:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:25,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:25,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:25,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:25,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:25,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 17:03:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:25,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:03:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:25,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:03:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:25,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 17:03:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 17:03:25,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:03:25,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581501614] [2022-07-19 17:03:25,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581501614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:03:25,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:03:25,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 17:03:25,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869232821] [2022-07-19 17:03:25,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:03:25,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 17:03:25,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:03:25,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 17:03:25,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:03:25,294 INFO L87 Difference]: Start difference. First operand 1455 states and 2381 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 17:03:31,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:31,517 INFO L93 Difference]: Finished difference Result 3658 states and 6195 transitions. [2022-07-19 17:03:31,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 17:03:31,518 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 107 [2022-07-19 17:03:31,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:31,530 INFO L225 Difference]: With dead ends: 3658 [2022-07-19 17:03:31,531 INFO L226 Difference]: Without dead ends: 2282 [2022-07-19 17:03:31,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=147, Invalid=273, Unknown=0, NotChecked=0, Total=420 [2022-07-19 17:03:31,537 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 2817 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 2915 mSolverCounterSat, 1367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 4282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1367 IncrementalHoareTripleChecker+Valid, 2915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:31,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2817 Valid, 2078 Invalid, 4282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1367 Valid, 2915 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-07-19 17:03:31,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2022-07-19 17:03:31,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 1463. [2022-07-19 17:03:31,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1172 states have (on average 1.6390784982935154) internal successors, (1921), 1202 states have internal predecessors, (1921), 223 states have call successors, (223), 59 states have call predecessors, (223), 67 states have return successors, (245), 212 states have call predecessors, (245), 218 states have call successors, (245) [2022-07-19 17:03:31,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2389 transitions. [2022-07-19 17:03:31,796 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2389 transitions. Word has length 107 [2022-07-19 17:03:31,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:31,797 INFO L495 AbstractCegarLoop]: Abstraction has 1463 states and 2389 transitions. [2022-07-19 17:03:31,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 17:03:31,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2389 transitions. [2022-07-19 17:03:31,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-19 17:03:31,802 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:31,803 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:03:31,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 17:03:31,803 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:31,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:31,803 INFO L85 PathProgramCache]: Analyzing trace with hash 210734150, now seen corresponding path program 1 times [2022-07-19 17:03:31,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:31,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123760868] [2022-07-19 17:03:31,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:31,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:31,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:31,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:31,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:03:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:03:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:03:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 17:03:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 17:03:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 17:03:32,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:03:32,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123760868] [2022-07-19 17:03:32,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123760868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:03:32,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:03:32,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 17:03:32,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715613682] [2022-07-19 17:03:32,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:03:32,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 17:03:32,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:03:32,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 17:03:32,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:03:32,309 INFO L87 Difference]: Start difference. First operand 1463 states and 2389 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 17:03:40,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:03:40,781 INFO L93 Difference]: Finished difference Result 5189 states and 8877 transitions. [2022-07-19 17:03:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-19 17:03:40,781 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2022-07-19 17:03:40,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:03:40,801 INFO L225 Difference]: With dead ends: 5189 [2022-07-19 17:03:40,801 INFO L226 Difference]: Without dead ends: 3805 [2022-07-19 17:03:40,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2022-07-19 17:03:40,808 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 4108 mSDsluCounter, 2007 mSDsCounter, 0 mSdLazyCounter, 4745 mSolverCounterSat, 1428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4173 SdHoareTripleChecker+Valid, 2906 SdHoareTripleChecker+Invalid, 6173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1428 IncrementalHoareTripleChecker+Valid, 4745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:03:40,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4173 Valid, 2906 Invalid, 6173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1428 Valid, 4745 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-07-19 17:03:40,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2022-07-19 17:03:41,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 2916. [2022-07-19 17:03:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2345 states have (on average 1.6456289978678038) internal successors, (3859), 2393 states have internal predecessors, (3859), 428 states have call successors, (428), 109 states have call predecessors, (428), 142 states have return successors, (546), 435 states have call predecessors, (546), 423 states have call successors, (546) [2022-07-19 17:03:41,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4833 transitions. [2022-07-19 17:03:41,271 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4833 transitions. Word has length 110 [2022-07-19 17:03:41,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:03:41,273 INFO L495 AbstractCegarLoop]: Abstraction has 2916 states and 4833 transitions. [2022-07-19 17:03:41,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 17:03:41,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4833 transitions. [2022-07-19 17:03:41,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 17:03:41,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:03:41,292 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:03:41,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 17:03:41,293 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:03:41,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:03:41,293 INFO L85 PathProgramCache]: Analyzing trace with hash 207824670, now seen corresponding path program 1 times [2022-07-19 17:03:41,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:03:41,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114518398] [2022-07-19 17:03:41,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:03:41,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:03:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:03:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:03:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:03:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:03:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:03:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 17:03:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 17:03:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:03:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:03:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 17:03:41,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:03:41,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114518398] [2022-07-19 17:03:41,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114518398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:03:41,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:03:41,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 17:03:41,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771797337] [2022-07-19 17:03:41,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:03:41,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 17:03:41,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:03:41,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 17:03:41,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:03:41,789 INFO L87 Difference]: Start difference. First operand 2916 states and 4833 transitions. Second operand has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 17:04:02,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:04:02,304 INFO L93 Difference]: Finished difference Result 11305 states and 20157 transitions. [2022-07-19 17:04:02,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-19 17:04:02,304 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 114 [2022-07-19 17:04:02,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:04:02,353 INFO L225 Difference]: With dead ends: 11305 [2022-07-19 17:04:02,354 INFO L226 Difference]: Without dead ends: 8459 [2022-07-19 17:04:02,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=734, Invalid=2128, Unknown=0, NotChecked=0, Total=2862 [2022-07-19 17:04:02,377 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 8608 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 9639 mSolverCounterSat, 3512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8687 SdHoareTripleChecker+Valid, 3718 SdHoareTripleChecker+Invalid, 13151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3512 IncrementalHoareTripleChecker+Valid, 9639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:04:02,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8687 Valid, 3718 Invalid, 13151 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3512 Valid, 9639 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time] [2022-07-19 17:04:02,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8459 states. [2022-07-19 17:04:03,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8459 to 6574. [2022-07-19 17:04:03,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6574 states, 5263 states have (on average 1.6009880296408892) internal successors, (8426), 5384 states have internal predecessors, (8426), 959 states have call successors, (959), 283 states have call predecessors, (959), 351 states have return successors, (1402), 961 states have call predecessors, (1402), 954 states have call successors, (1402) [2022-07-19 17:04:03,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6574 states to 6574 states and 10787 transitions. [2022-07-19 17:04:03,326 INFO L78 Accepts]: Start accepts. Automaton has 6574 states and 10787 transitions. Word has length 114 [2022-07-19 17:04:03,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:04:03,327 INFO L495 AbstractCegarLoop]: Abstraction has 6574 states and 10787 transitions. [2022-07-19 17:04:03,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 17:04:03,327 INFO L276 IsEmpty]: Start isEmpty. Operand 6574 states and 10787 transitions. [2022-07-19 17:04:03,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 17:04:03,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:04:03,330 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:04:03,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 17:04:03,331 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:04:03,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:04:03,331 INFO L85 PathProgramCache]: Analyzing trace with hash 2088298506, now seen corresponding path program 1 times [2022-07-19 17:04:03,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:04:03,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740170713] [2022-07-19 17:04:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:04:03,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:04:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:03,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:03,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:03,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:04:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:03,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:04:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:03,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:03,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:03,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:03,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:03,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:04:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:03,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:04:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:03,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:04:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:03,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 17:04:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:03,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:04:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:03,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 17:04:03,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:04:03,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740170713] [2022-07-19 17:04:03,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740170713] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:04:03,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493401480] [2022-07-19 17:04:03,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:04:03,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:04:03,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:04:03,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:04:03,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 17:04:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:04,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 17:04:04,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:04:04,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:04:04,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:04:04,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493401480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:04:04,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:04:04,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2022-07-19 17:04:04,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575615613] [2022-07-19 17:04:04,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:04:04,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:04:04,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:04:04,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:04:04,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-07-19 17:04:04,547 INFO L87 Difference]: Start difference. First operand 6574 states and 10787 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-19 17:04:08,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:04:08,244 INFO L93 Difference]: Finished difference Result 17990 states and 30397 transitions. [2022-07-19 17:04:08,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:04:08,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 122 [2022-07-19 17:04:08,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:04:08,297 INFO L225 Difference]: With dead ends: 17990 [2022-07-19 17:04:08,297 INFO L226 Difference]: Without dead ends: 11494 [2022-07-19 17:04:08,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-07-19 17:04:08,324 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 2188 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 2988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:04:08,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2314 Valid, 2741 Invalid, 2988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 17:04:08,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11494 states. [2022-07-19 17:04:09,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11494 to 10860. [2022-07-19 17:04:09,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10860 states, 8465 states have (on average 1.5912581216774955) internal successors, (13470), 8746 states have internal predecessors, (13470), 1826 states have call successors, (1826), 437 states have call predecessors, (1826), 568 states have return successors, (2810), 1871 states have call predecessors, (2810), 1821 states have call successors, (2810) [2022-07-19 17:04:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10860 states to 10860 states and 18106 transitions. [2022-07-19 17:04:10,006 INFO L78 Accepts]: Start accepts. Automaton has 10860 states and 18106 transitions. Word has length 122 [2022-07-19 17:04:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:04:10,007 INFO L495 AbstractCegarLoop]: Abstraction has 10860 states and 18106 transitions. [2022-07-19 17:04:10,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-19 17:04:10,007 INFO L276 IsEmpty]: Start isEmpty. Operand 10860 states and 18106 transitions. [2022-07-19 17:04:10,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-19 17:04:10,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:04:10,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:04:10,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 17:04:10,227 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,SelfDestructingSolverStorable21 [2022-07-19 17:04:10,227 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:04:10,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:04:10,228 INFO L85 PathProgramCache]: Analyzing trace with hash 514982175, now seen corresponding path program 1 times [2022-07-19 17:04:10,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:04:10,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979446436] [2022-07-19 17:04:10,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:04:10,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:04:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:10,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:10,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:04:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:10,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:04:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:10,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:10,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:10,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:10,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:10,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:04:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:04:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:10,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:04:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:10,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 17:04:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:10,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:04:10,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:04:10,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979446436] [2022-07-19 17:04:10,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979446436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:04:10,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:04:10,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 17:04:10,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493995553] [2022-07-19 17:04:10,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:04:10,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 17:04:10,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:04:10,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 17:04:10,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:04:10,834 INFO L87 Difference]: Start difference. First operand 10860 states and 18106 transitions. Second operand has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 17:04:22,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:04:22,658 INFO L93 Difference]: Finished difference Result 26794 states and 46681 transitions. [2022-07-19 17:04:22,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 17:04:22,659 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 121 [2022-07-19 17:04:22,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:04:22,733 INFO L225 Difference]: With dead ends: 26794 [2022-07-19 17:04:22,734 INFO L226 Difference]: Without dead ends: 14323 [2022-07-19 17:04:22,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=222, Invalid=770, Unknown=0, NotChecked=0, Total=992 [2022-07-19 17:04:22,784 INFO L413 NwaCegarLoop]: 1074 mSDtfsCounter, 2508 mSDsluCounter, 3623 mSDsCounter, 0 mSdLazyCounter, 7993 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2530 SdHoareTripleChecker+Valid, 4697 SdHoareTripleChecker+Invalid, 8740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 7993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:04:22,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2530 Valid, 4697 Invalid, 8740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [747 Valid, 7993 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-07-19 17:04:22,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14323 states. [2022-07-19 17:04:24,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14323 to 10860. [2022-07-19 17:04:24,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10860 states, 8465 states have (on average 1.567158889545186) internal successors, (13266), 8746 states have internal predecessors, (13266), 1826 states have call successors, (1826), 437 states have call predecessors, (1826), 568 states have return successors, (2810), 1871 states have call predecessors, (2810), 1821 states have call successors, (2810) [2022-07-19 17:04:24,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10860 states to 10860 states and 17902 transitions. [2022-07-19 17:04:24,643 INFO L78 Accepts]: Start accepts. Automaton has 10860 states and 17902 transitions. Word has length 121 [2022-07-19 17:04:24,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:04:24,644 INFO L495 AbstractCegarLoop]: Abstraction has 10860 states and 17902 transitions. [2022-07-19 17:04:24,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 17:04:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 10860 states and 17902 transitions. [2022-07-19 17:04:24,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 17:04:24,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:04:24,650 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:04:24,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 17:04:24,651 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:04:24,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:04:24,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1897428458, now seen corresponding path program 1 times [2022-07-19 17:04:24,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:04:24,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484713190] [2022-07-19 17:04:24,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:04:24,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:04:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:04:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:04:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:24,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:25,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:25,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:25,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:04:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:25,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:04:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:25,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 17:04:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:25,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:04:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:25,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 17:04:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 17:04:25,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:04:25,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484713190] [2022-07-19 17:04:25,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484713190] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:04:25,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:04:25,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 17:04:25,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950227819] [2022-07-19 17:04:25,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:04:25,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 17:04:25,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:04:25,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 17:04:25,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:04:25,207 INFO L87 Difference]: Start difference. First operand 10860 states and 17902 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-19 17:04:38,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:04:38,549 INFO L93 Difference]: Finished difference Result 25816 states and 45079 transitions. [2022-07-19 17:04:38,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 17:04:38,550 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2022-07-19 17:04:38,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:04:38,633 INFO L225 Difference]: With dead ends: 25816 [2022-07-19 17:04:38,634 INFO L226 Difference]: Without dead ends: 15037 [2022-07-19 17:04:38,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2022-07-19 17:04:38,681 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 5201 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 6479 mSolverCounterSat, 1764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5261 SdHoareTripleChecker+Valid, 3668 SdHoareTripleChecker+Invalid, 8243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1764 IncrementalHoareTripleChecker+Valid, 6479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:04:38,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5261 Valid, 3668 Invalid, 8243 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1764 Valid, 6479 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-07-19 17:04:38,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2022-07-19 17:04:40,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 11088. [2022-07-19 17:04:40,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11088 states, 8579 states have (on average 1.5596223336053152) internal successors, (13380), 8938 states have internal predecessors, (13380), 1862 states have call successors, (1862), 437 states have call predecessors, (1862), 646 states have return successors, (3146), 1907 states have call predecessors, (3146), 1857 states have call successors, (3146) [2022-07-19 17:04:40,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11088 states to 11088 states and 18388 transitions. [2022-07-19 17:04:40,821 INFO L78 Accepts]: Start accepts. Automaton has 11088 states and 18388 transitions. Word has length 123 [2022-07-19 17:04:40,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:04:40,822 INFO L495 AbstractCegarLoop]: Abstraction has 11088 states and 18388 transitions. [2022-07-19 17:04:40,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-19 17:04:40,822 INFO L276 IsEmpty]: Start isEmpty. Operand 11088 states and 18388 transitions. [2022-07-19 17:04:40,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-19 17:04:40,828 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:04:40,828 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:04:40,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 17:04:40,829 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:04:40,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:04:40,829 INFO L85 PathProgramCache]: Analyzing trace with hash -2061516223, now seen corresponding path program 1 times [2022-07-19 17:04:40,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:04:40,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878062724] [2022-07-19 17:04:40,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:04:40,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:04:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:40,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:40,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:40,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:04:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:41,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:04:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:41,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:41,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:41,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:41,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:41,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:04:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:41,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:04:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:41,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:04:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:41,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:04:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:41,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 17:04:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 17:04:41,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:04:41,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878062724] [2022-07-19 17:04:41,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878062724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:04:41,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:04:41,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 17:04:41,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122748606] [2022-07-19 17:04:41,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:04:41,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 17:04:41,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:04:41,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 17:04:41,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:04:41,370 INFO L87 Difference]: Start difference. First operand 11088 states and 18388 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-19 17:04:54,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:04:54,248 INFO L93 Difference]: Finished difference Result 27680 states and 48012 transitions. [2022-07-19 17:04:54,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-19 17:04:54,249 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 126 [2022-07-19 17:04:54,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:04:54,337 INFO L225 Difference]: With dead ends: 27680 [2022-07-19 17:04:54,337 INFO L226 Difference]: Without dead ends: 16669 [2022-07-19 17:04:54,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2022-07-19 17:04:54,378 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 4396 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 5918 mSolverCounterSat, 1429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4452 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 7347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1429 IncrementalHoareTripleChecker+Valid, 5918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:04:54,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4452 Valid, 3091 Invalid, 7347 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1429 Valid, 5918 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-07-19 17:04:54,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16669 states. [2022-07-19 17:04:56,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16669 to 12864. [2022-07-19 17:04:56,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12864 states, 10001 states have (on average 1.5412458754124587) internal successors, (15414), 10402 states have internal predecessors, (15414), 2078 states have call successors, (2078), 551 states have call predecessors, (2078), 784 states have return successors, (3566), 2105 states have call predecessors, (3566), 2073 states have call successors, (3566) [2022-07-19 17:04:56,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12864 states to 12864 states and 21058 transitions. [2022-07-19 17:04:56,631 INFO L78 Accepts]: Start accepts. Automaton has 12864 states and 21058 transitions. Word has length 126 [2022-07-19 17:04:56,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:04:56,632 INFO L495 AbstractCegarLoop]: Abstraction has 12864 states and 21058 transitions. [2022-07-19 17:04:56,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-19 17:04:56,632 INFO L276 IsEmpty]: Start isEmpty. Operand 12864 states and 21058 transitions. [2022-07-19 17:04:56,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-19 17:04:56,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:04:56,639 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:04:56,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 17:04:56,639 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:04:56,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:04:56,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1519227023, now seen corresponding path program 1 times [2022-07-19 17:04:56,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:04:56,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101870292] [2022-07-19 17:04:56,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:04:56,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:04:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:56,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:56,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:56,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:04:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:56,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:04:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:56,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:56,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:57,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:04:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:57,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:04:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:57,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:04:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:57,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:04:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:57,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 17:04:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:57,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 17:04:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:57,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 17:04:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:57,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:04:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:57,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 17:04:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:04:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 17:04:57,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:04:57,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101870292] [2022-07-19 17:04:57,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101870292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:04:57,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:04:57,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:04:57,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378308958] [2022-07-19 17:04:57,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:04:57,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:04:57,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:04:57,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:04:57,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:04:57,122 INFO L87 Difference]: Start difference. First operand 12864 states and 21058 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 17:05:09,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:05:09,025 INFO L93 Difference]: Finished difference Result 41366 states and 73071 transitions. [2022-07-19 17:05:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 17:05:09,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 133 [2022-07-19 17:05:09,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:05:09,229 INFO L225 Difference]: With dead ends: 41366 [2022-07-19 17:05:09,229 INFO L226 Difference]: Without dead ends: 28580 [2022-07-19 17:05:09,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:05:09,293 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 3165 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 1023 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3240 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 3255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1023 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:05:09,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3240 Valid, 1801 Invalid, 3255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1023 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-19 17:05:09,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2022-07-19 17:05:13,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 22288. [2022-07-19 17:05:13,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22288 states, 17251 states have (on average 1.5401426004289607) internal successors, (26569), 17977 states have internal predecessors, (26569), 3680 states have call successors, (3680), 935 states have call predecessors, (3680), 1356 states have return successors, (6905), 3765 states have call predecessors, (6905), 3675 states have call successors, (6905) [2022-07-19 17:05:13,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22288 states to 22288 states and 37154 transitions. [2022-07-19 17:05:13,505 INFO L78 Accepts]: Start accepts. Automaton has 22288 states and 37154 transitions. Word has length 133 [2022-07-19 17:05:13,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:05:13,505 INFO L495 AbstractCegarLoop]: Abstraction has 22288 states and 37154 transitions. [2022-07-19 17:05:13,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 17:05:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand 22288 states and 37154 transitions. [2022-07-19 17:05:13,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 17:05:13,513 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:05:13,513 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:05:13,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 17:05:13,514 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:05:13,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:05:13,514 INFO L85 PathProgramCache]: Analyzing trace with hash 148477100, now seen corresponding path program 1 times [2022-07-19 17:05:13,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:05:13,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044851766] [2022-07-19 17:05:13,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:05:13,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:05:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:13,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:05:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:13,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:05:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:13,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:05:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:13,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:05:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:13,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:05:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:13,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:05:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:13,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:05:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:13,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:05:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:13,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:05:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:13,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:05:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:13,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 17:05:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:13,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 17:05:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:13,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 17:05:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:13,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:05:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:13,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 17:05:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:13,980 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 17:05:13,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:05:13,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044851766] [2022-07-19 17:05:13,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044851766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:05:13,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:05:13,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:05:13,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338724086] [2022-07-19 17:05:13,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:05:13,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:05:13,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:05:13,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:05:13,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:05:13,982 INFO L87 Difference]: Start difference. First operand 22288 states and 37154 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 17:05:33,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:05:33,606 INFO L93 Difference]: Finished difference Result 75136 states and 139328 transitions. [2022-07-19 17:05:33,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 17:05:33,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 134 [2022-07-19 17:05:33,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:05:34,008 INFO L225 Difference]: With dead ends: 75136 [2022-07-19 17:05:34,009 INFO L226 Difference]: Without dead ends: 52926 [2022-07-19 17:05:34,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:05:34,132 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 2438 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 2800 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2514 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 3631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 2800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:05:34,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2514 Valid, 1970 Invalid, 3631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 2800 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-07-19 17:05:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52926 states. [2022-07-19 17:05:41,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52926 to 41140. [2022-07-19 17:05:41,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41140 states, 31755 states have (on average 1.5383719099354431) internal successors, (48851), 33131 states have internal predecessors, (48851), 6884 states have call successors, (6884), 1703 states have call predecessors, (6884), 2500 states have return successors, (14606), 7085 states have call predecessors, (14606), 6879 states have call successors, (14606) [2022-07-19 17:05:42,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41140 states to 41140 states and 70341 transitions. [2022-07-19 17:05:42,349 INFO L78 Accepts]: Start accepts. Automaton has 41140 states and 70341 transitions. Word has length 134 [2022-07-19 17:05:42,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:05:42,350 INFO L495 AbstractCegarLoop]: Abstraction has 41140 states and 70341 transitions. [2022-07-19 17:05:42,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 17:05:42,351 INFO L276 IsEmpty]: Start isEmpty. Operand 41140 states and 70341 transitions. [2022-07-19 17:05:42,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-19 17:05:42,359 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:05:42,359 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 17:05:42,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 17:05:42,359 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:05:42,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:05:42,360 INFO L85 PathProgramCache]: Analyzing trace with hash 307701267, now seen corresponding path program 1 times [2022-07-19 17:05:42,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:05:42,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979715051] [2022-07-19 17:05:42,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:05:42,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:05:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:42,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:05:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:42,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:05:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:42,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:05:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:42,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 17:05:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:42,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:05:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:42,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:05:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:42,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 17:05:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:42,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:05:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:42,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:05:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:42,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:05:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:42,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 17:05:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:42,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 17:05:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:42,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 17:05:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:42,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:05:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:42,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 17:05:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:05:42,848 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 17:05:42,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:05:42,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979715051] [2022-07-19 17:05:42,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979715051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:05:42,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:05:42,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:05:42,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454940819] [2022-07-19 17:05:42,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:05:42,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:05:42,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:05:42,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:05:42,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:05:42,850 INFO L87 Difference]: Start difference. First operand 41140 states and 70341 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15)