./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec11_product10.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/email_spec11_product10.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 c9a35f77051831a79054d5620e487d68dd21285b0cc9c8ae29c469f997bd1ec7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:06:58,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:06:58,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:06:58,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:06:58,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:06:58,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:06:58,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:06:58,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:06:58,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:06:58,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:06:58,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:06:58,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:06:58,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:06:58,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:06:58,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:06:58,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:06:58,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:06:58,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:06:58,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:06:58,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:06:58,450 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:06:58,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:06:58,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:06:58,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:06:58,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:06:58,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:06:58,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:06:58,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:06:58,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:06:58,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:06:58,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:06:58,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:06:58,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:06:58,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:06:58,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:06:58,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:06:58,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:06:58,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:06:58,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:06:58,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:06:58,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:06:58,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:06:58,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:06:58,506 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:06:58,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:06:58,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:06:58,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:06:58,508 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:06:58,508 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:06:58,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:06:58,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:06:58,509 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:06:58,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:06:58,510 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:06:58,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:06:58,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:06:58,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:06:58,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:06:58,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:06:58,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:06:58,511 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:06:58,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:06:58,512 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:06:58,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:06:58,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:06:58,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:06:58,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:06:58,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:06:58,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:06:58,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:06:58,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:06:58,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:06:58,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:06:58,514 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:06:58,514 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:06:58,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:06:58,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9a35f77051831a79054d5620e487d68dd21285b0cc9c8ae29c469f997bd1ec7 [2022-07-19 17:06:58,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:06:58,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:06:58,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:06:58,713 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:06:58,713 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:06:58,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec11_product10.cil.c [2022-07-19 17:06:58,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78c9071b8/e626b7c0164649a796ec62dbf9840a87/FLAG9ae6115a0 [2022-07-19 17:06:59,222 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:06:59,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product10.cil.c [2022-07-19 17:06:59,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78c9071b8/e626b7c0164649a796ec62dbf9840a87/FLAG9ae6115a0 [2022-07-19 17:06:59,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78c9071b8/e626b7c0164649a796ec62dbf9840a87 [2022-07-19 17:06:59,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:06:59,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:06:59,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:06:59,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:06:59,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:06:59,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:06:59" (1/1) ... [2022-07-19 17:06:59,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b780c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:59, skipping insertion in model container [2022-07-19 17:06:59,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:06:59" (1/1) ... [2022-07-19 17:06:59,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:06:59,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:06:59,657 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/email_spec11_product10.cil.c[53446,53459] [2022-07-19 17:06:59,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:06:59,678 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:06:59,760 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/email_spec11_product10.cil.c[53446,53459] [2022-07-19 17:06:59,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:06:59,785 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:06:59,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:59 WrapperNode [2022-07-19 17:06:59,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:06:59,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:06:59,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:06:59,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:06:59,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:59" (1/1) ... [2022-07-19 17:06:59,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:59" (1/1) ... [2022-07-19 17:06:59,838 INFO L137 Inliner]: procedures = 110, calls = 135, calls flagged for inlining = 40, calls inlined = 33, statements flattened = 620 [2022-07-19 17:06:59,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:06:59,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:06:59,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:06:59,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:06:59,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:59" (1/1) ... [2022-07-19 17:06:59,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:59" (1/1) ... [2022-07-19 17:06:59,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:59" (1/1) ... [2022-07-19 17:06:59,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:59" (1/1) ... [2022-07-19 17:06:59,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:59" (1/1) ... [2022-07-19 17:06:59,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:59" (1/1) ... [2022-07-19 17:06:59,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:59" (1/1) ... [2022-07-19 17:06:59,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:06:59,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:06:59,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:06:59,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:06:59,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:59" (1/1) ... [2022-07-19 17:06:59,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:06:59,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:06:59,932 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 17:06:59,938 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 17:06:59,975 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-19 17:06:59,975 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-19 17:06:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-19 17:06:59,976 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-19 17:06:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-19 17:06:59,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-19 17:06:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-19 17:06:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-19 17:06:59,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-19 17:06:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-07-19 17:06:59,980 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-07-19 17:06:59,980 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-19 17:06:59,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-19 17:06:59,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:06:59,981 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-19 17:06:59,981 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-19 17:06:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-19 17:06:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-19 17:06:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-19 17:06:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-19 17:06:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:06:59,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:06:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:07:00,153 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:07:00,154 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:07:00,464 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:07:00,469 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:07:00,470 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 17:07:00,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:07:00 BoogieIcfgContainer [2022-07-19 17:07:00,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:07:00,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:07:00,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:07:00,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:07:00,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:06:59" (1/3) ... [2022-07-19 17:07:00,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316a167e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:07:00, skipping insertion in model container [2022-07-19 17:07:00,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:06:59" (2/3) ... [2022-07-19 17:07:00,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316a167e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:07:00, skipping insertion in model container [2022-07-19 17:07:00,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:07:00" (3/3) ... [2022-07-19 17:07:00,477 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product10.cil.c [2022-07-19 17:07:00,486 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:07:00,486 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:07:00,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:07:00,520 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@42ab97a8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6c1b3300 [2022-07-19 17:07:00,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:07:00,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 124 states have (on average 1.4758064516129032) internal successors, (183), 126 states have internal predecessors, (183), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-19 17:07:00,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-19 17:07:00,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:00,530 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-07-19 17:07:00,531 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:00,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:00,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1155319339, now seen corresponding path program 1 times [2022-07-19 17:07:00,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:00,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123292842] [2022-07-19 17:07:00,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:00,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:07:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 17:07:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:07:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 17:07:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 17:07:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 17:07:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-19 17:07:00,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:00,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123292842] [2022-07-19 17:07:00,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123292842] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:07:00,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691714943] [2022-07-19 17:07:00,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:00,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:07:00,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:07:00,777 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 17:07:00,778 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 17:07:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:00,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 17:07:00,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:07:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 17:07:01,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:07:01,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691714943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:01,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:07:01,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-07-19 17:07:01,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666160231] [2022-07-19 17:07:01,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:01,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 17:07:01,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:01,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 17:07:01,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:07:01,054 INFO L87 Difference]: Start difference. First operand has 154 states, 124 states have (on average 1.4758064516129032) internal successors, (183), 126 states have internal predecessors, (183), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:01,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:01,089 INFO L93 Difference]: Finished difference Result 253 states and 353 transitions. [2022-07-19 17:07:01,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 17:07:01,090 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-07-19 17:07:01,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:01,101 INFO L225 Difference]: With dead ends: 253 [2022-07-19 17:07:01,102 INFO L226 Difference]: Without dead ends: 147 [2022-07-19 17:07:01,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:07:01,111 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:01,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:07:01,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-07-19 17:07:01,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-07-19 17:07:01,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 118 states have (on average 1.4576271186440677) internal successors, (172), 119 states have internal predecessors, (172), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-19 17:07:01,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 209 transitions. [2022-07-19 17:07:01,169 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 209 transitions. Word has length 69 [2022-07-19 17:07:01,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:01,172 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 209 transitions. [2022-07-19 17:07:01,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:01,173 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 209 transitions. [2022-07-19 17:07:01,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 17:07:01,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:01,176 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:01,195 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 17:07:01,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-19 17:07:01,396 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:01,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:01,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1225704593, now seen corresponding path program 1 times [2022-07-19 17:07:01,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:01,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186167343] [2022-07-19 17:07:01,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:01,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:01,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:01,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:01,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:07:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:01,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 17:07:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:01,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:07:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:01,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 17:07:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:01,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 17:07:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:01,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 17:07:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:01,515 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-19 17:07:01,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:01,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186167343] [2022-07-19 17:07:01,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186167343] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:07:01,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240412214] [2022-07-19 17:07:01,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:01,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:07:01,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:07:01,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:07:01,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 17:07:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:01,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 17:07:01,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:07:01,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 17:07:01,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:07:01,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240412214] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:01,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:07:01,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-19 17:07:01,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365087635] [2022-07-19 17:07:01,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:01,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:07:01,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:01,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:07:01,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:07:01,743 INFO L87 Difference]: Start difference. First operand 147 states and 209 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:01,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:01,760 INFO L93 Difference]: Finished difference Result 243 states and 334 transitions. [2022-07-19 17:07:01,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:07:01,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-07-19 17:07:01,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:01,762 INFO L225 Difference]: With dead ends: 243 [2022-07-19 17:07:01,762 INFO L226 Difference]: Without dead ends: 150 [2022-07-19 17:07:01,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:07:01,763 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:01,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 412 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:07:01,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-07-19 17:07:01,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2022-07-19 17:07:01,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 120 states have (on average 1.45) internal successors, (174), 121 states have internal predecessors, (174), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-19 17:07:01,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 211 transitions. [2022-07-19 17:07:01,772 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 211 transitions. Word has length 70 [2022-07-19 17:07:01,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:01,772 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 211 transitions. [2022-07-19 17:07:01,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:01,773 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 211 transitions. [2022-07-19 17:07:01,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-19 17:07:01,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:01,774 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-07-19 17:07:01,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 17:07:01,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-19 17:07:01,989 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:01,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:01,990 INFO L85 PathProgramCache]: Analyzing trace with hash 985064668, now seen corresponding path program 1 times [2022-07-19 17:07:01,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:01,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425476886] [2022-07-19 17:07:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:01,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 17:07:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 17:07:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 17:07:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 17:07:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 17:07:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 17:07:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 17:07:02,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:02,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425476886] [2022-07-19 17:07:02,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425476886] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:07:02,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157304202] [2022-07-19 17:07:02,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:02,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:07:02,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:07:02,125 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:07:02,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 17:07:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 17:07:02,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:07:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 17:07:02,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:07:02,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157304202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:02,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:07:02,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-07-19 17:07:02,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768268986] [2022-07-19 17:07:02,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:02,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:07:02,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:02,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:07:02,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:07:02,365 INFO L87 Difference]: Start difference. First operand 149 states and 211 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:07:02,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:02,414 INFO L93 Difference]: Finished difference Result 291 states and 415 transitions. [2022-07-19 17:07:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 17:07:02,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2022-07-19 17:07:02,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:02,427 INFO L225 Difference]: With dead ends: 291 [2022-07-19 17:07:02,427 INFO L226 Difference]: Without dead ends: 151 [2022-07-19 17:07:02,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:07:02,429 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 81 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:02,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 715 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:07:02,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-19 17:07:02,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-19 17:07:02,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 121 states have (on average 1.4462809917355373) internal successors, (175), 123 states have internal predecessors, (175), 19 states have call successors, (19), 9 states have call predecessors, (19), 10 states have return successors, (20), 18 states have call predecessors, (20), 18 states have call successors, (20) [2022-07-19 17:07:02,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 214 transitions. [2022-07-19 17:07:02,457 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 214 transitions. Word has length 75 [2022-07-19 17:07:02,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:02,459 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 214 transitions. [2022-07-19 17:07:02,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:07:02,459 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 214 transitions. [2022-07-19 17:07:02,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-19 17:07:02,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:02,464 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:02,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 17:07:02,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:07:02,682 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:02,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:02,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1281092033, now seen corresponding path program 1 times [2022-07-19 17:07:02,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:02,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500379880] [2022-07-19 17:07:02,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:02,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 17:07:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 17:07:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 17:07:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 17:07:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 17:07:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:02,759 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 17:07:02,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:02,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500379880] [2022-07-19 17:07:02,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500379880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:02,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:02,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:07:02,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059528674] [2022-07-19 17:07:02,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:02,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:07:02,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:02,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:07:02,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:07:02,761 INFO L87 Difference]: Start difference. First operand 151 states and 214 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:07:03,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:03,442 INFO L93 Difference]: Finished difference Result 402 states and 589 transitions. [2022-07-19 17:07:03,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 17:07:03,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2022-07-19 17:07:03,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:03,444 INFO L225 Difference]: With dead ends: 402 [2022-07-19 17:07:03,444 INFO L226 Difference]: Without dead ends: 270 [2022-07-19 17:07:03,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:07:03,446 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 371 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:03,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 693 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:07:03,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-07-19 17:07:03,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 151. [2022-07-19 17:07:03,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 121 states have (on average 1.4462809917355373) internal successors, (175), 123 states have internal predecessors, (175), 19 states have call successors, (19), 9 states have call predecessors, (19), 10 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2022-07-19 17:07:03,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 213 transitions. [2022-07-19 17:07:03,465 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 213 transitions. Word has length 76 [2022-07-19 17:07:03,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:03,465 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 213 transitions. [2022-07-19 17:07:03,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:07:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 213 transitions. [2022-07-19 17:07:03,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 17:07:03,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:03,466 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:03,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 17:07:03,467 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:03,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:03,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1583544820, now seen corresponding path program 2 times [2022-07-19 17:07:03,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:03,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928144649] [2022-07-19 17:07:03,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:03,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:03,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:03,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:03,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:03,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 17:07:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:03,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 17:07:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:03,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:07:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 17:07:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:03,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 17:07:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:03,528 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 17:07:03,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:03,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928144649] [2022-07-19 17:07:03,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928144649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:03,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:03,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:07:03,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429539819] [2022-07-19 17:07:03,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:03,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:07:03,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:03,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:07:03,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:07:03,529 INFO L87 Difference]: Start difference. First operand 151 states and 213 transitions. Second operand has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:07:04,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:04,171 INFO L93 Difference]: Finished difference Result 404 states and 592 transitions. [2022-07-19 17:07:04,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 17:07:04,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 77 [2022-07-19 17:07:04,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:04,173 INFO L225 Difference]: With dead ends: 404 [2022-07-19 17:07:04,174 INFO L226 Difference]: Without dead ends: 272 [2022-07-19 17:07:04,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:07:04,175 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 370 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:04,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 691 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 17:07:04,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-07-19 17:07:04,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 153. [2022-07-19 17:07:04,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 122 states have (on average 1.4426229508196722) internal successors, (176), 125 states have internal predecessors, (176), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-19 17:07:04,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 216 transitions. [2022-07-19 17:07:04,189 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 216 transitions. Word has length 77 [2022-07-19 17:07:04,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:04,189 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 216 transitions. [2022-07-19 17:07:04,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:07:04,189 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 216 transitions. [2022-07-19 17:07:04,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-19 17:07:04,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:04,190 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:04,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 17:07:04,191 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:04,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:04,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1541642854, now seen corresponding path program 1 times [2022-07-19 17:07:04,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:04,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672178494] [2022-07-19 17:07:04,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:04,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:04,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:04,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:04,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:04,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 17:07:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:04,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 17:07:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:04,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 17:07:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:04,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 17:07:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:04,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 17:07:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:04,247 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 17:07:04,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:04,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672178494] [2022-07-19 17:07:04,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672178494] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:07:04,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460550508] [2022-07-19 17:07:04,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:04,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:07:04,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:07:04,263 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:07:04,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 17:07:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:04,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 17:07:04,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:07:04,460 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 17:07:04,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 17:07:04,512 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 17:07:04,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460550508] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 17:07:04,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 17:07:04,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-07-19 17:07:04,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776819826] [2022-07-19 17:07:04,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 17:07:04,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 17:07:04,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:04,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 17:07:04,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:07:04,514 INFO L87 Difference]: Start difference. First operand 153 states and 216 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 7 states have internal predecessors, (78), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:07:05,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:05,224 INFO L93 Difference]: Finished difference Result 494 states and 751 transitions. [2022-07-19 17:07:05,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 17:07:05,225 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 7 states have internal predecessors, (78), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 78 [2022-07-19 17:07:05,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:05,227 INFO L225 Difference]: With dead ends: 494 [2022-07-19 17:07:05,227 INFO L226 Difference]: Without dead ends: 401 [2022-07-19 17:07:05,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:07:05,229 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 556 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:05,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 834 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:07:05,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-07-19 17:07:05,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 258. [2022-07-19 17:07:05,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 227 states have (on average 1.6079295154185023) internal successors, (365), 230 states have internal predecessors, (365), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-19 17:07:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 405 transitions. [2022-07-19 17:07:05,244 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 405 transitions. Word has length 78 [2022-07-19 17:07:05,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:05,245 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 405 transitions. [2022-07-19 17:07:05,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 7 states have internal predecessors, (78), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:07:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 405 transitions. [2022-07-19 17:07:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-19 17:07:05,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:05,246 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-19 17:07:05,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 17:07:05,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:07:05,478 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:05,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:05,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1040281410, now seen corresponding path program 1 times [2022-07-19 17:07:05,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:05,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307223216] [2022-07-19 17:07:05,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:05,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 17:07:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 17:07:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:07:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 17:07:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 17:07:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:05,568 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 17:07:05,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:05,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307223216] [2022-07-19 17:07:05,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307223216] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:05,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:05,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:07:05,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400255156] [2022-07-19 17:07:05,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:05,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:07:05,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:05,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:07:05,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:07:05,570 INFO L87 Difference]: Start difference. First operand 258 states and 405 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:06,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:06,156 INFO L93 Difference]: Finished difference Result 719 states and 1158 transitions. [2022-07-19 17:07:06,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:07:06,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 85 [2022-07-19 17:07:06,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:06,159 INFO L225 Difference]: With dead ends: 719 [2022-07-19 17:07:06,159 INFO L226 Difference]: Without dead ends: 489 [2022-07-19 17:07:06,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:07:06,161 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 364 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:06,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 613 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 17:07:06,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-07-19 17:07:06,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 362. [2022-07-19 17:07:06,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 331 states have (on average 1.6525679758308156) internal successors, (547), 334 states have internal predecessors, (547), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-19 17:07:06,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 587 transitions. [2022-07-19 17:07:06,180 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 587 transitions. Word has length 85 [2022-07-19 17:07:06,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:06,180 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 587 transitions. [2022-07-19 17:07:06,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:06,180 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 587 transitions. [2022-07-19 17:07:06,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-19 17:07:06,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:06,181 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-19 17:07:06,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 17:07:06,182 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:06,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:06,182 INFO L85 PathProgramCache]: Analyzing trace with hash -718675378, now seen corresponding path program 1 times [2022-07-19 17:07:06,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:06,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152701186] [2022-07-19 17:07:06,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:06,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:06,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:06,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:06,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:06,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 17:07:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:06,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 17:07:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:06,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 17:07:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:06,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 17:07:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 17:07:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:06,245 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 17:07:06,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:06,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152701186] [2022-07-19 17:07:06,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152701186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:06,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:06,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:07:06,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232670263] [2022-07-19 17:07:06,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:06,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:07:06,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:06,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:07:06,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:07:06,247 INFO L87 Difference]: Start difference. First operand 362 states and 587 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:06,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:06,697 INFO L93 Difference]: Finished difference Result 952 states and 1572 transitions. [2022-07-19 17:07:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:07:06,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2022-07-19 17:07:06,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:06,700 INFO L225 Difference]: With dead ends: 952 [2022-07-19 17:07:06,700 INFO L226 Difference]: Without dead ends: 636 [2022-07-19 17:07:06,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:07:06,702 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 364 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:06,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 596 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 17:07:06,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-07-19 17:07:06,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 509. [2022-07-19 17:07:06,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 478 states have (on average 1.6820083682008369) internal successors, (804), 481 states have internal predecessors, (804), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-19 17:07:06,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 844 transitions. [2022-07-19 17:07:06,742 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 844 transitions. Word has length 86 [2022-07-19 17:07:06,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:06,742 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 844 transitions. [2022-07-19 17:07:06,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:06,743 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 844 transitions. [2022-07-19 17:07:06,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 17:07:06,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:06,744 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:06,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 17:07:06,744 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:06,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:06,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2093145248, now seen corresponding path program 1 times [2022-07-19 17:07:06,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:06,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119794242] [2022-07-19 17:07:06,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:06,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:06,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:06,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:06,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:06,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 17:07:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:06,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 17:07:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:06,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 17:07:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:06,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 17:07:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:06,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 17:07:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 17:07:06,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:06,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119794242] [2022-07-19 17:07:06,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119794242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:06,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:06,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:07:06,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467942917] [2022-07-19 17:07:06,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:06,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:07:06,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:06,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:07:06,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:07:06,838 INFO L87 Difference]: Start difference. First operand 509 states and 844 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:07,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:07,331 INFO L93 Difference]: Finished difference Result 1339 states and 2247 transitions. [2022-07-19 17:07:07,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:07:07,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2022-07-19 17:07:07,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:07,335 INFO L225 Difference]: With dead ends: 1339 [2022-07-19 17:07:07,335 INFO L226 Difference]: Without dead ends: 895 [2022-07-19 17:07:07,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:07:07,336 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 357 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:07,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 611 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 17:07:07,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-07-19 17:07:07,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 768. [2022-07-19 17:07:07,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 737 states have (on average 1.6906377204884668) internal successors, (1246), 740 states have internal predecessors, (1246), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-19 17:07:07,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1286 transitions. [2022-07-19 17:07:07,361 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1286 transitions. Word has length 87 [2022-07-19 17:07:07,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:07,361 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 1286 transitions. [2022-07-19 17:07:07,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:07,361 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1286 transitions. [2022-07-19 17:07:07,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-19 17:07:07,363 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:07,363 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:07,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 17:07:07,363 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:07,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:07,364 INFO L85 PathProgramCache]: Analyzing trace with hash -161738404, now seen corresponding path program 1 times [2022-07-19 17:07:07,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:07,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726148725] [2022-07-19 17:07:07,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:07,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:07,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:07,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:07,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:07,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 17:07:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:07,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:07:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:07,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 17:07:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:07,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 17:07:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:07,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 17:07:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:07,410 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 17:07:07,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:07,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726148725] [2022-07-19 17:07:07,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726148725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:07,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:07,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:07:07,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061937873] [2022-07-19 17:07:07,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:07,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:07:07,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:07,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:07:07,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:07:07,412 INFO L87 Difference]: Start difference. First operand 768 states and 1286 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:07,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:07,912 INFO L93 Difference]: Finished difference Result 1966 states and 3325 transitions. [2022-07-19 17:07:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:07:07,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2022-07-19 17:07:07,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:07,917 INFO L225 Difference]: With dead ends: 1966 [2022-07-19 17:07:07,917 INFO L226 Difference]: Without dead ends: 1311 [2022-07-19 17:07:07,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:07:07,919 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 355 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:07,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 614 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 17:07:07,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2022-07-19 17:07:07,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1184. [2022-07-19 17:07:07,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1153 states have (on average 1.6886383347788378) internal successors, (1947), 1156 states have internal predecessors, (1947), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-19 17:07:07,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1987 transitions. [2022-07-19 17:07:07,956 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1987 transitions. Word has length 88 [2022-07-19 17:07:07,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:07,957 INFO L495 AbstractCegarLoop]: Abstraction has 1184 states and 1987 transitions. [2022-07-19 17:07:07,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:07,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1987 transitions. [2022-07-19 17:07:07,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-19 17:07:07,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:07,959 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:07,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 17:07:07,959 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:07,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:07,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1878401154, now seen corresponding path program 1 times [2022-07-19 17:07:07,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:07,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169054102] [2022-07-19 17:07:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:07,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:07,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:07,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:07,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:07,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 17:07:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:08,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 17:07:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:08,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 17:07:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:08,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 17:07:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:08,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 17:07:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 17:07:08,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:08,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169054102] [2022-07-19 17:07:08,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169054102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:08,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:08,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:07:08,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564828724] [2022-07-19 17:07:08,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:08,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:07:08,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:08,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:07:08,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:07:08,014 INFO L87 Difference]: Start difference. First operand 1184 states and 1987 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:08,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:08,538 INFO L93 Difference]: Finished difference Result 2991 states and 5070 transitions. [2022-07-19 17:07:08,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:07:08,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 89 [2022-07-19 17:07:08,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:08,546 INFO L225 Difference]: With dead ends: 2991 [2022-07-19 17:07:08,547 INFO L226 Difference]: Without dead ends: 2000 [2022-07-19 17:07:08,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:07:08,550 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 357 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:08,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 607 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 17:07:08,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2022-07-19 17:07:08,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1873. [2022-07-19 17:07:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1842 states have (on average 1.6818675352877308) internal successors, (3098), 1845 states have internal predecessors, (3098), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-19 17:07:08,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3138 transitions. [2022-07-19 17:07:08,640 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3138 transitions. Word has length 89 [2022-07-19 17:07:08,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:08,641 INFO L495 AbstractCegarLoop]: Abstraction has 1873 states and 3138 transitions. [2022-07-19 17:07:08,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:08,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3138 transitions. [2022-07-19 17:07:08,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 17:07:08,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:08,645 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-19 17:07:08,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 17:07:08,645 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:08,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:08,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1632926082, now seen corresponding path program 1 times [2022-07-19 17:07:08,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:08,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685829009] [2022-07-19 17:07:08,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:08,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:08,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:08,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:08,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:08,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 17:07:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:08,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 17:07:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:08,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 17:07:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:08,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 17:07:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:08,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 17:07:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:08,717 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 17:07:08,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:08,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685829009] [2022-07-19 17:07:08,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685829009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:08,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:08,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:07:08,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288295314] [2022-07-19 17:07:08,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:08,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:07:08,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:08,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:07:08,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:07:08,719 INFO L87 Difference]: Start difference. First operand 1873 states and 3138 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:09,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:09,253 INFO L93 Difference]: Finished difference Result 4473 states and 7597 transitions. [2022-07-19 17:07:09,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:07:09,253 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 90 [2022-07-19 17:07:09,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:09,262 INFO L225 Difference]: With dead ends: 4473 [2022-07-19 17:07:09,262 INFO L226 Difference]: Without dead ends: 2993 [2022-07-19 17:07:09,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:07:09,264 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 351 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:09,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 606 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 17:07:09,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2022-07-19 17:07:09,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 2866. [2022-07-19 17:07:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2835 states have (on average 1.6783068783068784) internal successors, (4758), 2838 states have internal predecessors, (4758), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-19 17:07:09,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 4798 transitions. [2022-07-19 17:07:09,352 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 4798 transitions. Word has length 90 [2022-07-19 17:07:09,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:09,353 INFO L495 AbstractCegarLoop]: Abstraction has 2866 states and 4798 transitions. [2022-07-19 17:07:09,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:09,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 4798 transitions. [2022-07-19 17:07:09,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 17:07:09,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:09,357 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-19 17:07:09,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 17:07:09,358 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:09,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:09,358 INFO L85 PathProgramCache]: Analyzing trace with hash 496921180, now seen corresponding path program 1 times [2022-07-19 17:07:09,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:09,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079889275] [2022-07-19 17:07:09,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:09,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 17:07:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 17:07:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 17:07:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 17:07:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 17:07:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 17:07:09,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:09,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079889275] [2022-07-19 17:07:09,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079889275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:09,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:09,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:07:09,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747342401] [2022-07-19 17:07:09,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:09,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:07:09,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:09,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:07:09,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:07:09,428 INFO L87 Difference]: Start difference. First operand 2866 states and 4798 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:09,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:09,973 INFO L93 Difference]: Finished difference Result 7262 states and 12297 transitions. [2022-07-19 17:07:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:07:09,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 91 [2022-07-19 17:07:09,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:09,989 INFO L225 Difference]: With dead ends: 7262 [2022-07-19 17:07:09,989 INFO L226 Difference]: Without dead ends: 4957 [2022-07-19 17:07:09,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:07:09,993 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 353 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:09,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 606 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 17:07:09,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4957 states. [2022-07-19 17:07:10,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4957 to 4830. [2022-07-19 17:07:10,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4830 states, 4799 states have (on average 1.668264221712857) internal successors, (8006), 4802 states have internal predecessors, (8006), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-19 17:07:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4830 states to 4830 states and 8046 transitions. [2022-07-19 17:07:10,184 INFO L78 Accepts]: Start accepts. Automaton has 4830 states and 8046 transitions. Word has length 91 [2022-07-19 17:07:10,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:10,185 INFO L495 AbstractCegarLoop]: Abstraction has 4830 states and 8046 transitions. [2022-07-19 17:07:10,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:10,185 INFO L276 IsEmpty]: Start isEmpty. Operand 4830 states and 8046 transitions. [2022-07-19 17:07:10,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-19 17:07:10,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:10,194 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:10,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 17:07:10,194 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:10,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:10,195 INFO L85 PathProgramCache]: Analyzing trace with hash 989429260, now seen corresponding path program 1 times [2022-07-19 17:07:10,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:10,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670127018] [2022-07-19 17:07:10,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:10,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:10,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:10,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:10,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:10,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 17:07:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:10,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 17:07:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:10,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 17:07:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:10,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 17:07:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:10,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:07:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:10,273 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 17:07:10,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:10,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670127018] [2022-07-19 17:07:10,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670127018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:10,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:10,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:07:10,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200960530] [2022-07-19 17:07:10,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:10,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:07:10,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:10,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:07:10,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:07:10,276 INFO L87 Difference]: Start difference. First operand 4830 states and 8046 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:10,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:10,944 INFO L93 Difference]: Finished difference Result 12583 states and 21165 transitions. [2022-07-19 17:07:10,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:07:10,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 92 [2022-07-19 17:07:10,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:10,976 INFO L225 Difference]: With dead ends: 12583 [2022-07-19 17:07:10,976 INFO L226 Difference]: Without dead ends: 8568 [2022-07-19 17:07:10,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:07:10,984 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 347 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:10,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 614 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 17:07:10,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8568 states. [2022-07-19 17:07:11,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8568 to 8441. [2022-07-19 17:07:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8441 states, 8410 states have (on average 1.656242568370987) internal successors, (13929), 8413 states have internal predecessors, (13929), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-19 17:07:11,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8441 states to 8441 states and 13969 transitions. [2022-07-19 17:07:11,254 INFO L78 Accepts]: Start accepts. Automaton has 8441 states and 13969 transitions. Word has length 92 [2022-07-19 17:07:11,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:11,255 INFO L495 AbstractCegarLoop]: Abstraction has 8441 states and 13969 transitions. [2022-07-19 17:07:11,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:11,266 INFO L276 IsEmpty]: Start isEmpty. Operand 8441 states and 13969 transitions. [2022-07-19 17:07:11,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 17:07:11,276 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:11,276 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 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] [2022-07-19 17:07:11,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 17:07:11,277 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:11,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:11,277 INFO L85 PathProgramCache]: Analyzing trace with hash -658317433, now seen corresponding path program 2 times [2022-07-19 17:07:11,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:11,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072489613] [2022-07-19 17:07:11,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:11,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:11,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:11,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:11,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:11,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:07:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:11,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 17:07:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:11,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 17:07:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:11,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 17:07:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:11,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:07:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:11,351 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 17:07:11,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:11,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072489613] [2022-07-19 17:07:11,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072489613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:11,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:11,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:07:11,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413919078] [2022-07-19 17:07:11,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:11,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:07:11,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:11,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:07:11,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:07:11,353 INFO L87 Difference]: Start difference. First operand 8441 states and 13969 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:12,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:12,231 INFO L93 Difference]: Finished difference Result 15719 states and 26148 transitions. [2022-07-19 17:07:12,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 17:07:12,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 93 [2022-07-19 17:07:12,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:12,254 INFO L225 Difference]: With dead ends: 15719 [2022-07-19 17:07:12,255 INFO L226 Difference]: Without dead ends: 8568 [2022-07-19 17:07:12,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:07:12,266 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 519 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:12,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 879 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 17:07:12,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8568 states. [2022-07-19 17:07:12,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8568 to 8441. [2022-07-19 17:07:12,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8441 states, 8410 states have (on average 1.6399524375743162) internal successors, (13792), 8413 states have internal predecessors, (13792), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-19 17:07:12,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8441 states to 8441 states and 13832 transitions. [2022-07-19 17:07:12,576 INFO L78 Accepts]: Start accepts. Automaton has 8441 states and 13832 transitions. Word has length 93 [2022-07-19 17:07:12,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:12,576 INFO L495 AbstractCegarLoop]: Abstraction has 8441 states and 13832 transitions. [2022-07-19 17:07:12,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:12,576 INFO L276 IsEmpty]: Start isEmpty. Operand 8441 states and 13832 transitions. [2022-07-19 17:07:12,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 17:07:12,587 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:12,587 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:12,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 17:07:12,588 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:12,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:12,588 INFO L85 PathProgramCache]: Analyzing trace with hash -110515526, now seen corresponding path program 1 times [2022-07-19 17:07:12,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:12,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527349525] [2022-07-19 17:07:12,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:12,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:12,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:12,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:12,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:12,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:07:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:12,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 17:07:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 17:07:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:12,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 17:07:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:12,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:07:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:12,641 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 17:07:12,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:12,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527349525] [2022-07-19 17:07:12,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527349525] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:12,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:12,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:07:12,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114439515] [2022-07-19 17:07:12,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:12,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:07:12,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:12,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:07:12,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:07:12,643 INFO L87 Difference]: Start difference. First operand 8441 states and 13832 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:13,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:13,426 INFO L93 Difference]: Finished difference Result 22667 states and 37385 transitions. [2022-07-19 17:07:13,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:07:13,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 93 [2022-07-19 17:07:13,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:13,468 INFO L225 Difference]: With dead ends: 22667 [2022-07-19 17:07:13,468 INFO L226 Difference]: Without dead ends: 15364 [2022-07-19 17:07:13,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:07:13,485 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 350 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:13,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 604 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 17:07:13,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15364 states. [2022-07-19 17:07:14,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15364 to 15237. [2022-07-19 17:07:14,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15237 states, 15206 states have (on average 1.6238326976193609) internal successors, (24692), 15209 states have internal predecessors, (24692), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-19 17:07:14,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15237 states to 15237 states and 24732 transitions. [2022-07-19 17:07:14,104 INFO L78 Accepts]: Start accepts. Automaton has 15237 states and 24732 transitions. Word has length 93 [2022-07-19 17:07:14,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:14,105 INFO L495 AbstractCegarLoop]: Abstraction has 15237 states and 24732 transitions. [2022-07-19 17:07:14,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:14,105 INFO L276 IsEmpty]: Start isEmpty. Operand 15237 states and 24732 transitions. [2022-07-19 17:07:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-19 17:07:14,123 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:14,123 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:14,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 17:07:14,124 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:14,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:14,124 INFO L85 PathProgramCache]: Analyzing trace with hash -515603026, now seen corresponding path program 1 times [2022-07-19 17:07:14,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:14,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424041099] [2022-07-19 17:07:14,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:14,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:14,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:14,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:14,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:14,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 17:07:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:14,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 17:07:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:14,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 17:07:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:14,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 17:07:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:14,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 17:07:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 17:07:14,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:14,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424041099] [2022-07-19 17:07:14,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424041099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:14,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:14,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:07:14,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706868793] [2022-07-19 17:07:14,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:14,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:07:14,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:14,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:07:14,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:07:14,191 INFO L87 Difference]: Start difference. First operand 15237 states and 24732 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:15,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:15,413 INFO L93 Difference]: Finished difference Result 42054 states and 68517 transitions. [2022-07-19 17:07:15,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:07:15,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2022-07-19 17:07:15,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:15,469 INFO L225 Difference]: With dead ends: 42054 [2022-07-19 17:07:15,469 INFO L226 Difference]: Without dead ends: 28355 [2022-07-19 17:07:15,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:07:15,492 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 343 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:15,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 613 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 17:07:15,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28355 states. [2022-07-19 17:07:16,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28355 to 28228. [2022-07-19 17:07:16,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28228 states, 28197 states have (on average 1.604461467532007) internal successors, (45241), 28200 states have internal predecessors, (45241), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-19 17:07:16,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28228 states to 28228 states and 45281 transitions. [2022-07-19 17:07:16,500 INFO L78 Accepts]: Start accepts. Automaton has 28228 states and 45281 transitions. Word has length 94 [2022-07-19 17:07:16,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:16,500 INFO L495 AbstractCegarLoop]: Abstraction has 28228 states and 45281 transitions. [2022-07-19 17:07:16,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:16,501 INFO L276 IsEmpty]: Start isEmpty. Operand 28228 states and 45281 transitions. [2022-07-19 17:07:16,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-19 17:07:16,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:16,520 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:16,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 17:07:16,521 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:16,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:16,521 INFO L85 PathProgramCache]: Analyzing trace with hash -487009512, now seen corresponding path program 1 times [2022-07-19 17:07:16,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:16,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637403466] [2022-07-19 17:07:16,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:16,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:16,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:16,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:16,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:16,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 17:07:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:16,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 17:07:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:16,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 17:07:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:16,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 17:07:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:16,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 17:07:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 17:07:16,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:16,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637403466] [2022-07-19 17:07:16,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637403466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:16,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:16,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:07:16,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089721856] [2022-07-19 17:07:16,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:16,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:07:16,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:16,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:07:16,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:07:16,575 INFO L87 Difference]: Start difference. First operand 28228 states and 45281 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:18,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:18,428 INFO L93 Difference]: Finished difference Result 53492 states and 85684 transitions. [2022-07-19 17:07:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:07:18,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 95 [2022-07-19 17:07:18,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:18,548 INFO L225 Difference]: With dead ends: 53492 [2022-07-19 17:07:18,548 INFO L226 Difference]: Without dead ends: 53399 [2022-07-19 17:07:18,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:07:18,571 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 342 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:18,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 609 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 17:07:18,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53399 states. [2022-07-19 17:07:20,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53399 to 53272. [2022-07-19 17:07:20,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53272 states, 53241 states have (on average 1.5821077740838827) internal successors, (84233), 53244 states have internal predecessors, (84233), 19 states have call successors, (19), 9 states have call predecessors, (19), 11 states have return successors, (21), 18 states have call predecessors, (21), 18 states have call successors, (21) [2022-07-19 17:07:20,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53272 states to 53272 states and 84273 transitions. [2022-07-19 17:07:20,323 INFO L78 Accepts]: Start accepts. Automaton has 53272 states and 84273 transitions. Word has length 95 [2022-07-19 17:07:20,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:20,323 INFO L495 AbstractCegarLoop]: Abstraction has 53272 states and 84273 transitions. [2022-07-19 17:07:20,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:20,324 INFO L276 IsEmpty]: Start isEmpty. Operand 53272 states and 84273 transitions. [2022-07-19 17:07:20,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-19 17:07:20,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:20,344 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-19 17:07:20,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 17:07:20,345 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:20,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:20,345 INFO L85 PathProgramCache]: Analyzing trace with hash -718621360, now seen corresponding path program 1 times [2022-07-19 17:07:20,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:20,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506075116] [2022-07-19 17:07:20,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:20,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:20,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:20,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:20,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 17:07:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:20,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:07:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:20,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 17:07:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:20,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 17:07:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:20,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 17:07:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:20,541 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-19 17:07:20,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:20,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506075116] [2022-07-19 17:07:20,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506075116] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:07:20,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040221288] [2022-07-19 17:07:20,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:20,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:07:20,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:07:20,551 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:07:20,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 17:07:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:20,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-19 17:07:20,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:07:21,000 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 17:07:21,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:07:21,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040221288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:21,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:07:21,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2022-07-19 17:07:21,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816459379] [2022-07-19 17:07:21,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:21,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 17:07:21,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:21,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 17:07:21,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2022-07-19 17:07:21,002 INFO L87 Difference]: Start difference. First operand 53272 states and 84273 transitions. Second operand has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-19 17:07:23,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:23,074 INFO L93 Difference]: Finished difference Result 53602 states and 84734 transitions. [2022-07-19 17:07:23,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 17:07:23,074 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 96 [2022-07-19 17:07:23,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:23,196 INFO L225 Difference]: With dead ends: 53602 [2022-07-19 17:07:23,197 INFO L226 Difference]: Without dead ends: 53515 [2022-07-19 17:07:23,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=1527, Unknown=0, NotChecked=0, Total=1722 [2022-07-19 17:07:23,219 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 578 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:23,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 2405 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 17:07:23,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53515 states. [2022-07-19 17:07:25,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53515 to 53416. [2022-07-19 17:07:25,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53416 states, 53350 states have (on average 1.581630740393627) internal successors, (84380), 53354 states have internal predecessors, (84380), 43 states have call successors, (43), 17 states have call predecessors, (43), 22 states have return successors, (55), 44 states have call predecessors, (55), 41 states have call successors, (55) [2022-07-19 17:07:25,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53416 states to 53416 states and 84478 transitions. [2022-07-19 17:07:25,426 INFO L78 Accepts]: Start accepts. Automaton has 53416 states and 84478 transitions. Word has length 96 [2022-07-19 17:07:25,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:25,426 INFO L495 AbstractCegarLoop]: Abstraction has 53416 states and 84478 transitions. [2022-07-19 17:07:25,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-19 17:07:25,427 INFO L276 IsEmpty]: Start isEmpty. Operand 53416 states and 84478 transitions. [2022-07-19 17:07:25,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 17:07:25,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:25,447 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:25,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 17:07:25,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:07:25,656 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:25,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:25,657 INFO L85 PathProgramCache]: Analyzing trace with hash -470836275, now seen corresponding path program 1 times [2022-07-19 17:07:25,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:25,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652236306] [2022-07-19 17:07:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:25,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:25,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:25,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:25,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:25,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 17:07:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:25,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:07:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:25,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 17:07:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:25,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 17:07:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:25,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 17:07:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 17:07:25,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:25,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652236306] [2022-07-19 17:07:25,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652236306] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:25,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:25,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:07:25,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339344950] [2022-07-19 17:07:25,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:25,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:07:25,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:25,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:07:25,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:07:25,780 INFO L87 Difference]: Start difference. First operand 53416 states and 84478 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:30,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:30,497 INFO L93 Difference]: Finished difference Result 106319 states and 168382 transitions. [2022-07-19 17:07:30,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 17:07:30,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2022-07-19 17:07:30,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:30,749 INFO L225 Difference]: With dead ends: 106319 [2022-07-19 17:07:30,749 INFO L226 Difference]: Without dead ends: 106097 [2022-07-19 17:07:30,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2022-07-19 17:07:30,782 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1345 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 733 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 2165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 733 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:30,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 765 Invalid, 2165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [733 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 17:07:30,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106097 states. [2022-07-19 17:07:34,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106097 to 104927. [2022-07-19 17:07:34,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104927 states, 104786 states have (on average 1.5836180405779399) internal successors, (165941), 104795 states have internal predecessors, (165941), 95 states have call successors, (95), 32 states have call predecessors, (95), 45 states have return successors, (132), 99 states have call predecessors, (132), 91 states have call successors, (132) [2022-07-19 17:07:34,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104927 states to 104927 states and 166168 transitions. [2022-07-19 17:07:34,850 INFO L78 Accepts]: Start accepts. Automaton has 104927 states and 166168 transitions. Word has length 97 [2022-07-19 17:07:34,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:34,850 INFO L495 AbstractCegarLoop]: Abstraction has 104927 states and 166168 transitions. [2022-07-19 17:07:34,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 17:07:34,851 INFO L276 IsEmpty]: Start isEmpty. Operand 104927 states and 166168 transitions. [2022-07-19 17:07:34,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 17:07:34,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:34,886 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:34,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 17:07:34,886 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:34,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:34,886 INFO L85 PathProgramCache]: Analyzing trace with hash -585870852, now seen corresponding path program 1 times [2022-07-19 17:07:34,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:34,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426308609] [2022-07-19 17:07:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:34,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:35,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:35,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:35,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:35,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 17:07:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:35,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:07:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:35,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 17:07:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:35,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 17:07:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:35,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 17:07:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:35,061 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 17:07:35,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:35,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426308609] [2022-07-19 17:07:35,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426308609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:35,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:35,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 17:07:35,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136908536] [2022-07-19 17:07:35,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:35,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 17:07:35,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:35,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 17:07:35,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-19 17:07:35,062 INFO L87 Difference]: Start difference. First operand 104927 states and 166168 transitions. Second operand has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-19 17:07:40,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:40,060 INFO L93 Difference]: Finished difference Result 106657 states and 168855 transitions. [2022-07-19 17:07:40,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 17:07:40,061 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 97 [2022-07-19 17:07:40,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:40,448 INFO L225 Difference]: With dead ends: 106657 [2022-07-19 17:07:40,448 INFO L226 Difference]: Without dead ends: 105501 [2022-07-19 17:07:40,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=270, Invalid=1136, Unknown=0, NotChecked=0, Total=1406 [2022-07-19 17:07:40,481 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 794 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 2580 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 2984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:40,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 1177 Invalid, 2984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2580 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 17:07:40,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105501 states. [2022-07-19 17:07:44,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105501 to 104903. [2022-07-19 17:07:44,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104903 states, 104774 states have (on average 1.5836085288334891) internal successors, (165921), 104780 states have internal predecessors, (165921), 85 states have call successors, (85), 36 states have call predecessors, (85), 43 states have return successors, (108), 86 states have call predecessors, (108), 81 states have call successors, (108) [2022-07-19 17:07:44,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104903 states to 104903 states and 166114 transitions. [2022-07-19 17:07:44,591 INFO L78 Accepts]: Start accepts. Automaton has 104903 states and 166114 transitions. Word has length 97 [2022-07-19 17:07:44,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:07:44,591 INFO L495 AbstractCegarLoop]: Abstraction has 104903 states and 166114 transitions. [2022-07-19 17:07:44,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-19 17:07:44,592 INFO L276 IsEmpty]: Start isEmpty. Operand 104903 states and 166114 transitions. [2022-07-19 17:07:44,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 17:07:44,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:07:44,622 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:07:44,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 17:07:44,622 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:07:44,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:07:44,622 INFO L85 PathProgramCache]: Analyzing trace with hash 911154205, now seen corresponding path program 1 times [2022-07-19 17:07:44,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:07:44,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119923544] [2022-07-19 17:07:44,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:07:44,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:07:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:44,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 17:07:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:44,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 17:07:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:44,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 17:07:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:44,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 17:07:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:44,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:07:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:44,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 17:07:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:44,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 17:07:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:44,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 17:07:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:07:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 17:07:44,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:07:44,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119923544] [2022-07-19 17:07:44,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119923544] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:07:44,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:07:44,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 17:07:44,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837778106] [2022-07-19 17:07:44,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:07:44,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 17:07:44,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:07:44,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 17:07:44,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:07:44,686 INFO L87 Difference]: Start difference. First operand 104903 states and 166114 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 17:07:48,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:07:48,311 INFO L93 Difference]: Finished difference Result 105353 states and 166770 transitions. [2022-07-19 17:07:48,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:07:48,313 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 97 [2022-07-19 17:07:48,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:07:48,642 INFO L225 Difference]: With dead ends: 105353 [2022-07-19 17:07:48,643 INFO L226 Difference]: Without dead ends: 105133 [2022-07-19 17:07:48,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-19 17:07:48,676 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 388 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:07:48,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 717 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 17:07:48,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105133 states.