./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 23:29:00,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:29:00,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:29:00,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:29:00,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:29:00,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:29:00,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:29:00,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:29:00,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:29:00,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:29:00,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:29:00,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:29:00,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:29:00,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:29:00,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:29:00,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:29:00,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:29:00,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:29:00,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:29:00,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:29:00,543 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:29:00,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:29:00,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:29:00,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:29:00,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:29:00,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:29:00,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:29:00,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:29:00,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:29:00,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:29:00,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:29:00,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:29:00,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:29:00,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:29:00,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:29:00,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:29:00,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:29:00,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:29:00,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:29:00,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:29:00,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:29:00,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:29:00,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:29:00,595 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:29:00,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:29:00,596 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:29:00,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:29:00,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:29:00,597 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:29:00,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:29:00,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:29:00,598 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:29:00,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:29:00,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:29:00,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:29:00,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:29:00,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:29:00,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:29:00,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:29:00,601 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:29:00,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:29:00,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:29:00,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:29:00,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:29:00,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:29:00,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:29:00,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:29:00,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:29:00,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:29:00,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:29:00,604 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:29:00,604 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:29:00,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:29:00,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be [2022-07-19 23:29:00,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:29:00,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:29:00,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:29:00,866 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:29:00,866 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:29:00,867 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-07-19 23:29:00,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab7b0cd61/f8deffff17b54224bcc354afd70ecb41/FLAG580ee94ea [2022-07-19 23:29:01,597 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:29:01,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-07-19 23:29:01,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab7b0cd61/f8deffff17b54224bcc354afd70ecb41/FLAG580ee94ea [2022-07-19 23:29:01,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab7b0cd61/f8deffff17b54224bcc354afd70ecb41 [2022-07-19 23:29:01,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:29:01,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:29:01,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:29:01,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:29:01,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:29:01,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:29:01" (1/1) ... [2022-07-19 23:29:01,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0c1717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:01, skipping insertion in model container [2022-07-19 23:29:01,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:29:01" (1/1) ... [2022-07-19 23:29:01,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:29:01,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:29:02,703 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/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2022-07-19 23:29:03,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:29:03,180 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:29:03,348 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/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2022-07-19 23:29:03,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:29:03,602 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:29:03,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:03 WrapperNode [2022-07-19 23:29:03,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:29:03,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:29:03,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:29:03,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:29:03,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:03" (1/1) ... [2022-07-19 23:29:03,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:03" (1/1) ... [2022-07-19 23:29:03,775 INFO L137 Inliner]: procedures = 174, calls = 1340, calls flagged for inlining = 82, calls inlined = 66, statements flattened = 2613 [2022-07-19 23:29:03,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:29:03,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:29:03,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:29:03,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:29:03,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:03" (1/1) ... [2022-07-19 23:29:03,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:03" (1/1) ... [2022-07-19 23:29:03,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:03" (1/1) ... [2022-07-19 23:29:03,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:03" (1/1) ... [2022-07-19 23:29:03,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:03" (1/1) ... [2022-07-19 23:29:03,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:03" (1/1) ... [2022-07-19 23:29:03,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:03" (1/1) ... [2022-07-19 23:29:03,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:29:03,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:29:03,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:29:03,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:29:03,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:03" (1/1) ... [2022-07-19 23:29:03,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:29:03,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:29:03,977 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 23:29:04,036 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 23:29:04,063 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_reset_device [2022-07-19 23:29:04,063 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_reset_device [2022-07-19 23:29:04,064 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_resume [2022-07-19 23:29:04,064 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_resume [2022-07-19 23:29:04,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-19 23:29:04,064 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-19 23:29:04,064 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-19 23:29:04,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_12 [2022-07-19 23:29:04,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_12 [2022-07-19 23:29:04,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-19 23:29:04,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-19 23:29:04,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-19 23:29:04,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-19 23:29:04,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 23:29:04,065 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-07-19 23:29:04,065 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-07-19 23:29:04,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-07-19 23:29:04,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-07-19 23:29:04,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-19 23:29:04,066 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-19 23:29:04,066 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-19 23:29:04,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-19 23:29:04,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 23:29:04,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 23:29:04,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-07-19 23:29:04,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-07-19 23:29:04,067 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb_fwload [2022-07-19 23:29:04,067 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb_fwload [2022-07-19 23:29:04,068 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-19 23:29:04,068 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-19 23:29:04,068 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-07-19 23:29:04,068 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-07-19 23:29:04,068 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb [2022-07-19 23:29:04,068 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb [2022-07-19 23:29:04,068 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive_fwload [2022-07-19 23:29:04,069 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive_fwload [2022-07-19 23:29:04,069 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-19 23:29:04,069 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-19 23:29:04,069 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_send_fw_pkt [2022-07-19 23:29:04,069 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_send_fw_pkt [2022-07-19 23:29:04,070 INFO L130 BoogieDeclarations]: Found specification of procedure __if_usb_submit_rx_urb [2022-07-19 23:29:04,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __if_usb_submit_rx_urb [2022-07-19 23:29:04,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 23:29:04,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:29:04,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:29:04,070 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_free [2022-07-19 23:29:04,070 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_free [2022-07-19 23:29:04,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 23:29:04,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 23:29:04,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-19 23:29:04,071 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-19 23:29:04,071 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 23:29:04,071 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 23:29:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:29:04,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-07-19 23:29:04,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-07-19 23:29:04,073 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_disconnect [2022-07-19 23:29:04,073 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_disconnect [2022-07-19 23:29:04,074 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_block [2022-07-19 23:29:04,074 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_block [2022-07-19 23:29:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:29:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-07-19 23:29:04,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-07-19 23:29:04,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_9 [2022-07-19 23:29:04,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_9 [2022-07-19 23:29:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-19 23:29:04,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-19 23:29:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:29:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:29:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-19 23:29:04,076 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-19 23:29:04,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-19 23:29:04,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2022-07-19 23:29:04,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2022-07-19 23:29:04,077 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-07-19 23:29:04,077 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-07-19 23:29:04,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:29:04,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2022-07-19 23:29:04,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2022-07-19 23:29:04,078 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-19 23:29:04,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-19 23:29:04,078 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-07-19 23:29:04,078 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-07-19 23:29:04,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2022-07-19 23:29:04,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2022-07-19 23:29:04,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:29:04,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:29:04,079 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-07-19 23:29:04,079 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-07-19 23:29:04,080 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_remove_card [2022-07-19 23:29:04,080 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_remove_card [2022-07-19 23:29:04,080 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-19 23:29:04,080 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-19 23:29:04,080 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-07-19 23:29:04,080 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-07-19 23:29:04,081 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive [2022-07-19 23:29:04,081 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive [2022-07-19 23:29:04,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-07-19 23:29:04,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-07-19 23:29:04,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 23:29:04,082 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-19 23:29:04,082 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-19 23:29:04,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-19 23:29:04,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-19 23:29:04,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-19 23:29:04,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:29:04,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:29:04,650 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:29:04,655 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:29:04,944 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-19 23:29:05,551 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-07-19 23:29:06,517 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:29:06,536 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:29:06,536 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 23:29:06,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:29:06 BoogieIcfgContainer [2022-07-19 23:29:06,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:29:06,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:29:06,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:29:06,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:29:06,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:29:01" (1/3) ... [2022-07-19 23:29:06,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359cc332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:29:06, skipping insertion in model container [2022-07-19 23:29:06,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:03" (2/3) ... [2022-07-19 23:29:06,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359cc332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:29:06, skipping insertion in model container [2022-07-19 23:29:06,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:29:06" (3/3) ... [2022-07-19 23:29:06,551 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-07-19 23:29:06,565 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:29:06,565 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:29:06,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:29:06,654 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@368a126e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@334ec730 [2022-07-19 23:29:06,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:29:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 826 states, 603 states have (on average 1.3747927031509122) internal successors, (829), 633 states have internal predecessors, (829), 178 states have call successors, (178), 45 states have call predecessors, (178), 43 states have return successors, (172), 166 states have call predecessors, (172), 172 states have call successors, (172) [2022-07-19 23:29:06,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-19 23:29:06,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:29:06,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:29:06,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:29:06,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:29:06,684 INFO L85 PathProgramCache]: Analyzing trace with hash 527149613, now seen corresponding path program 1 times [2022-07-19 23:29:06,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:29:06,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719295029] [2022-07-19 23:29:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:29:06,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:29:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:07,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:29:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:07,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:29:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:29:07,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:29:07,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719295029] [2022-07-19 23:29:07,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719295029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:29:07,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:29:07,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:29:07,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771148240] [2022-07-19 23:29:07,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:29:07,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:29:07,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:29:07,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:29:07,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:29:07,342 INFO L87 Difference]: Start difference. First operand has 826 states, 603 states have (on average 1.3747927031509122) internal successors, (829), 633 states have internal predecessors, (829), 178 states have call successors, (178), 45 states have call predecessors, (178), 43 states have return successors, (172), 166 states have call predecessors, (172), 172 states have call successors, (172) Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 23:29:10,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:29:10,717 INFO L93 Difference]: Finished difference Result 2773 states and 4101 transitions. [2022-07-19 23:29:10,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:29:10,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2022-07-19 23:29:10,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:29:10,754 INFO L225 Difference]: With dead ends: 2773 [2022-07-19 23:29:10,754 INFO L226 Difference]: Without dead ends: 1924 [2022-07-19 23:29:10,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:29:10,770 INFO L413 NwaCegarLoop]: 1260 mSDtfsCounter, 2446 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 1177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2556 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 2743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1177 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:29:10,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2556 Valid, 3122 Invalid, 2743 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1177 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-19 23:29:10,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2022-07-19 23:29:10,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1585. [2022-07-19 23:29:10,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1165 states have (on average 1.36137339055794) internal successors, (1586), 1205 states have internal predecessors, (1586), 336 states have call successors, (336), 84 states have call predecessors, (336), 83 states have return successors, (331), 319 states have call predecessors, (331), 331 states have call successors, (331) [2022-07-19 23:29:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2253 transitions. [2022-07-19 23:29:10,927 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2253 transitions. Word has length 29 [2022-07-19 23:29:10,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:29:10,928 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2253 transitions. [2022-07-19 23:29:10,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 23:29:10,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2253 transitions. [2022-07-19 23:29:10,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-19 23:29:10,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:29:10,932 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:29:10,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 23:29:10,933 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:29:10,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:29:10,934 INFO L85 PathProgramCache]: Analyzing trace with hash 195057076, now seen corresponding path program 1 times [2022-07-19 23:29:10,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:29:10,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363834825] [2022-07-19 23:29:10,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:29:10,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:29:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:11,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:29:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:11,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:29:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:11,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 23:29:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 23:29:11,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:29:11,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363834825] [2022-07-19 23:29:11,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363834825] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:29:11,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:29:11,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:29:11,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827936504] [2022-07-19 23:29:11,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:29:11,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:29:11,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:29:11,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:29:11,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:29:11,097 INFO L87 Difference]: Start difference. First operand 1585 states and 2253 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:29:12,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:29:12,960 INFO L93 Difference]: Finished difference Result 1950 states and 2809 transitions. [2022-07-19 23:29:12,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 23:29:12,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-07-19 23:29:12,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:29:12,974 INFO L225 Difference]: With dead ends: 1950 [2022-07-19 23:29:12,975 INFO L226 Difference]: Without dead ends: 1937 [2022-07-19 23:29:12,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:29:12,978 INFO L413 NwaCegarLoop]: 1031 mSDtfsCounter, 1802 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:29:12,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1899 Valid, 1931 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 23:29:12,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2022-07-19 23:29:13,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1585. [2022-07-19 23:29:13,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1165 states have (on average 1.3605150214592274) internal successors, (1585), 1205 states have internal predecessors, (1585), 336 states have call successors, (336), 84 states have call predecessors, (336), 83 states have return successors, (331), 319 states have call predecessors, (331), 331 states have call successors, (331) [2022-07-19 23:29:13,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2252 transitions. [2022-07-19 23:29:13,058 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2252 transitions. Word has length 39 [2022-07-19 23:29:13,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:29:13,058 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2252 transitions. [2022-07-19 23:29:13,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:29:13,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2252 transitions. [2022-07-19 23:29:13,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-19 23:29:13,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:29:13,061 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:29:13,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 23:29:13,061 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:29:13,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:29:13,062 INFO L85 PathProgramCache]: Analyzing trace with hash 252315378, now seen corresponding path program 1 times [2022-07-19 23:29:13,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:29:13,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453738941] [2022-07-19 23:29:13,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:29:13,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:29:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:13,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:29:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:13,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:29:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:13,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 23:29:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:13,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 23:29:13,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:29:13,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453738941] [2022-07-19 23:29:13,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453738941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:29:13,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:29:13,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:29:13,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273451284] [2022-07-19 23:29:13,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:29:13,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:29:13,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:29:13,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:29:13,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:29:13,281 INFO L87 Difference]: Start difference. First operand 1585 states and 2252 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:29:16,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:29:16,558 INFO L93 Difference]: Finished difference Result 5389 states and 7961 transitions. [2022-07-19 23:29:16,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:29:16,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-07-19 23:29:16,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:29:16,585 INFO L225 Difference]: With dead ends: 5389 [2022-07-19 23:29:16,585 INFO L226 Difference]: Without dead ends: 3823 [2022-07-19 23:29:16,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:29:16,596 INFO L413 NwaCegarLoop]: 1240 mSDtfsCounter, 2528 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 1182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2626 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1182 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:29:16,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2626 Valid, 3050 Invalid, 2711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1182 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-19 23:29:16,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3823 states. [2022-07-19 23:29:16,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3823 to 3298. [2022-07-19 23:29:16,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3298 states, 2431 states have (on average 1.3562320032908268) internal successors, (3297), 2507 states have internal predecessors, (3297), 678 states have call successors, (678), 165 states have call predecessors, (678), 188 states have return successors, (793), 669 states have call predecessors, (793), 673 states have call successors, (793) [2022-07-19 23:29:16,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3298 states to 3298 states and 4768 transitions. [2022-07-19 23:29:16,793 INFO L78 Accepts]: Start accepts. Automaton has 3298 states and 4768 transitions. Word has length 39 [2022-07-19 23:29:16,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:29:16,794 INFO L495 AbstractCegarLoop]: Abstraction has 3298 states and 4768 transitions. [2022-07-19 23:29:16,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:29:16,795 INFO L276 IsEmpty]: Start isEmpty. Operand 3298 states and 4768 transitions. [2022-07-19 23:29:16,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-19 23:29:16,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:29:16,798 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:29:16,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 23:29:16,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:29:16,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:29:16,799 INFO L85 PathProgramCache]: Analyzing trace with hash -768568990, now seen corresponding path program 1 times [2022-07-19 23:29:16,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:29:16,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275465869] [2022-07-19 23:29:16,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:29:16,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:29:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:16,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:29:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:16,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:29:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:17,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 23:29:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 23:29:17,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:29:17,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275465869] [2022-07-19 23:29:17,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275465869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:29:17,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:29:17,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:29:17,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984066742] [2022-07-19 23:29:17,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:29:17,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:29:17,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:29:17,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:29:17,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:29:17,026 INFO L87 Difference]: Start difference. First operand 3298 states and 4768 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:29:20,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:29:20,076 INFO L93 Difference]: Finished difference Result 10872 states and 16391 transitions. [2022-07-19 23:29:20,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:29:20,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-07-19 23:29:20,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:29:20,137 INFO L225 Difference]: With dead ends: 10872 [2022-07-19 23:29:20,137 INFO L226 Difference]: Without dead ends: 7593 [2022-07-19 23:29:20,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:29:20,160 INFO L413 NwaCegarLoop]: 1187 mSDtfsCounter, 2544 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 1199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2647 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1199 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:29:20,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2647 Valid, 2930 Invalid, 2715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1199 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 23:29:20,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7593 states. [2022-07-19 23:29:20,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7593 to 6717. [2022-07-19 23:29:20,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6717 states, 4956 states have (on average 1.3520984665052462) internal successors, (6701), 5104 states have internal predecessors, (6701), 1362 states have call successors, (1362), 327 states have call predecessors, (1362), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-07-19 23:29:20,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6717 states to 6717 states and 9880 transitions. [2022-07-19 23:29:20,536 INFO L78 Accepts]: Start accepts. Automaton has 6717 states and 9880 transitions. Word has length 40 [2022-07-19 23:29:20,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:29:20,539 INFO L495 AbstractCegarLoop]: Abstraction has 6717 states and 9880 transitions. [2022-07-19 23:29:20,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:29:20,539 INFO L276 IsEmpty]: Start isEmpty. Operand 6717 states and 9880 transitions. [2022-07-19 23:29:20,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-19 23:29:20,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:29:20,541 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:29:20,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 23:29:20,542 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:29:20,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:29:20,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1943758837, now seen corresponding path program 1 times [2022-07-19 23:29:20,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:29:20,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213744901] [2022-07-19 23:29:20,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:29:20,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:29:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:20,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:29:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:20,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:29:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:20,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 23:29:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 23:29:20,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:29:20,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213744901] [2022-07-19 23:29:20,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213744901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:29:20,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:29:20,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:29:20,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539924401] [2022-07-19 23:29:20,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:29:20,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:29:20,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:29:20,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:29:20,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:29:20,733 INFO L87 Difference]: Start difference. First operand 6717 states and 9880 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:29:23,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:29:23,408 INFO L93 Difference]: Finished difference Result 7591 states and 11290 transitions. [2022-07-19 23:29:23,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:29:23,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-07-19 23:29:23,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:29:23,458 INFO L225 Difference]: With dead ends: 7591 [2022-07-19 23:29:23,458 INFO L226 Difference]: Without dead ends: 7588 [2022-07-19 23:29:23,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:29:23,468 INFO L413 NwaCegarLoop]: 1190 mSDtfsCounter, 2530 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 1196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2632 SdHoareTripleChecker+Valid, 2935 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1196 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:29:23,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2632 Valid, 2935 Invalid, 2696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1196 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 23:29:23,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7588 states. [2022-07-19 23:29:23,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7588 to 6718. [2022-07-19 23:29:23,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6718 states, 4957 states have (on average 1.3520274359491629) internal successors, (6702), 5105 states have internal predecessors, (6702), 1362 states have call successors, (1362), 327 states have call predecessors, (1362), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-07-19 23:29:23,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6718 states to 6718 states and 9881 transitions. [2022-07-19 23:29:23,865 INFO L78 Accepts]: Start accepts. Automaton has 6718 states and 9881 transitions. Word has length 41 [2022-07-19 23:29:23,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:29:23,867 INFO L495 AbstractCegarLoop]: Abstraction has 6718 states and 9881 transitions. [2022-07-19 23:29:23,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:29:23,868 INFO L276 IsEmpty]: Start isEmpty. Operand 6718 states and 9881 transitions. [2022-07-19 23:29:23,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-19 23:29:23,870 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:29:23,870 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:29:23,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 23:29:23,870 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:29:23,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:29:23,874 INFO L85 PathProgramCache]: Analyzing trace with hash 126580421, now seen corresponding path program 1 times [2022-07-19 23:29:23,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:29:23,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853758989] [2022-07-19 23:29:23,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:29:23,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:29:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:24,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:29:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:24,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:29:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:24,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 23:29:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 23:29:24,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:29:24,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853758989] [2022-07-19 23:29:24,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853758989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:29:24,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:29:24,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:29:24,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596578558] [2022-07-19 23:29:24,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:29:24,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:29:24,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:29:24,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:29:24,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:29:24,069 INFO L87 Difference]: Start difference. First operand 6718 states and 9881 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:29:25,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:29:25,472 INFO L93 Difference]: Finished difference Result 7587 states and 11286 transitions. [2022-07-19 23:29:25,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:29:25,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-07-19 23:29:25,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:29:25,514 INFO L225 Difference]: With dead ends: 7587 [2022-07-19 23:29:25,514 INFO L226 Difference]: Without dead ends: 7584 [2022-07-19 23:29:25,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:29:25,521 INFO L413 NwaCegarLoop]: 1014 mSDtfsCounter, 1781 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:29:25,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1875 Valid, 1877 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 23:29:25,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7584 states. [2022-07-19 23:29:25,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7584 to 6717. [2022-07-19 23:29:25,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6717 states, 4957 states have (on average 1.3518257010288481) internal successors, (6701), 5104 states have internal predecessors, (6701), 1361 states have call successors, (1361), 327 states have call predecessors, (1361), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-07-19 23:29:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6717 states to 6717 states and 9879 transitions. [2022-07-19 23:29:25,917 INFO L78 Accepts]: Start accepts. Automaton has 6717 states and 9879 transitions. Word has length 42 [2022-07-19 23:29:25,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:29:25,919 INFO L495 AbstractCegarLoop]: Abstraction has 6717 states and 9879 transitions. [2022-07-19 23:29:25,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:29:25,920 INFO L276 IsEmpty]: Start isEmpty. Operand 6717 states and 9879 transitions. [2022-07-19 23:29:25,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-19 23:29:25,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:29:25,925 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 23:29:25,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 23:29:25,925 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:29:25,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:29:25,926 INFO L85 PathProgramCache]: Analyzing trace with hash -371370760, now seen corresponding path program 1 times [2022-07-19 23:29:25,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:29:25,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715323028] [2022-07-19 23:29:25,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:29:25,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:29:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:26,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:29:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:26,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:29:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:26,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 23:29:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 23:29:26,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:29:26,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715323028] [2022-07-19 23:29:26,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715323028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:29:26,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:29:26,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:29:26,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664225431] [2022-07-19 23:29:26,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:29:26,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:29:26,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:29:26,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:29:26,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:29:26,092 INFO L87 Difference]: Start difference. First operand 6717 states and 9879 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:29:27,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:29:27,605 INFO L93 Difference]: Finished difference Result 7586 states and 11284 transitions. [2022-07-19 23:29:27,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:29:27,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-07-19 23:29:27,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:29:27,646 INFO L225 Difference]: With dead ends: 7586 [2022-07-19 23:29:27,647 INFO L226 Difference]: Without dead ends: 7574 [2022-07-19 23:29:27,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:29:27,653 INFO L413 NwaCegarLoop]: 1006 mSDtfsCounter, 1784 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1877 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:29:27,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1877 Valid, 1873 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 23:29:27,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7574 states. [2022-07-19 23:29:27,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7574 to 6707. [2022-07-19 23:29:27,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6707 states, 4948 states have (on average 1.3516572352465643) internal successors, (6688), 5094 states have internal predecessors, (6688), 1360 states have call successors, (1360), 327 states have call predecessors, (1360), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-07-19 23:29:27,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6707 states to 6707 states and 9865 transitions. [2022-07-19 23:29:27,975 INFO L78 Accepts]: Start accepts. Automaton has 6707 states and 9865 transitions. Word has length 43 [2022-07-19 23:29:27,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:29:27,977 INFO L495 AbstractCegarLoop]: Abstraction has 6707 states and 9865 transitions. [2022-07-19 23:29:27,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:29:27,977 INFO L276 IsEmpty]: Start isEmpty. Operand 6707 states and 9865 transitions. [2022-07-19 23:29:27,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-19 23:29:27,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:29:27,988 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:29:27,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 23:29:27,989 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:29:27,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:29:27,989 INFO L85 PathProgramCache]: Analyzing trace with hash -134116982, now seen corresponding path program 1 times [2022-07-19 23:29:27,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:29:27,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158776214] [2022-07-19 23:29:27,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:29:27,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:29:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:28,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:29:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:28,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:29:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:28,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 23:29:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:29:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:28,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 23:29:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:28,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:29:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:28,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 23:29:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:28,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:29:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:28,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:29:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:28,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:29:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:28,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:29:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:28,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:29:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:28,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:29:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:28,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 23:29:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:28,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:29:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:28,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 23:29:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 23:29:28,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:29:28,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158776214] [2022-07-19 23:29:28,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158776214] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:29:28,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:29:28,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 23:29:28,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084604554] [2022-07-19 23:29:28,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:29:28,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 23:29:28,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:29:28,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 23:29:28,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:29:28,365 INFO L87 Difference]: Start difference. First operand 6707 states and 9865 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:29:31,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:29:31,108 INFO L93 Difference]: Finished difference Result 16108 states and 23839 transitions. [2022-07-19 23:29:31,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 23:29:31,109 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2022-07-19 23:29:31,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:29:31,153 INFO L225 Difference]: With dead ends: 16108 [2022-07-19 23:29:31,153 INFO L226 Difference]: Without dead ends: 9420 [2022-07-19 23:29:31,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-07-19 23:29:31,181 INFO L413 NwaCegarLoop]: 1033 mSDtfsCounter, 2390 mSDsluCounter, 2273 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 1487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2455 SdHoareTripleChecker+Valid, 3306 SdHoareTripleChecker+Invalid, 3175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1487 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:29:31,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2455 Valid, 3306 Invalid, 3175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1487 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 23:29:31,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9420 states. [2022-07-19 23:29:31,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9420 to 7983. [2022-07-19 23:29:31,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7983 states, 5905 states have (on average 1.3483488569009314) internal successors, (7962), 6083 states have internal predecessors, (7962), 1550 states have call successors, (1550), 352 states have call predecessors, (1550), 527 states have return successors, (2169), 1643 states have call predecessors, (2169), 1547 states have call successors, (2169) [2022-07-19 23:29:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7983 states to 7983 states and 11681 transitions. [2022-07-19 23:29:31,634 INFO L78 Accepts]: Start accepts. Automaton has 7983 states and 11681 transitions. Word has length 143 [2022-07-19 23:29:31,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:29:31,635 INFO L495 AbstractCegarLoop]: Abstraction has 7983 states and 11681 transitions. [2022-07-19 23:29:31,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:29:31,635 INFO L276 IsEmpty]: Start isEmpty. Operand 7983 states and 11681 transitions. [2022-07-19 23:29:31,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-19 23:29:31,646 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:29:31,646 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:29:31,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 23:29:31,647 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:29:31,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:29:31,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1543029914, now seen corresponding path program 1 times [2022-07-19 23:29:31,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:29:31,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337883323] [2022-07-19 23:29:31,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:29:31,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:29:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:31,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:29:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:31,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:29:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:31,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 23:29:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:31,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 23:29:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:31,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:29:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:31,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:29:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:31,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:29:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:31,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 23:29:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:31,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:29:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:29:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:31,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:29:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:31,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:29:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:31,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:29:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:32,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:29:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:32,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 23:29:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:32,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:29:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:32,033 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 23:29:32,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:29:32,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337883323] [2022-07-19 23:29:32,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337883323] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:29:32,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589629592] [2022-07-19 23:29:32,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:29:32,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:29:32,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:29:32,043 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 23:29:32,051 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 23:29:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:32,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 23:29:32,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:29:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 23:29:32,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:29:32,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589629592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:29:32,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:29:32,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-19 23:29:32,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825075960] [2022-07-19 23:29:32,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:29:32,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:29:32,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:29:32,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:29:32,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-19 23:29:32,802 INFO L87 Difference]: Start difference. First operand 7983 states and 11681 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:29:33,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:29:33,732 INFO L93 Difference]: Finished difference Result 23983 states and 35141 transitions. [2022-07-19 23:29:33,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:29:33,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2022-07-19 23:29:33,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:29:33,809 INFO L225 Difference]: With dead ends: 23983 [2022-07-19 23:29:33,809 INFO L226 Difference]: Without dead ends: 16023 [2022-07-19 23:29:33,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-07-19 23:29:33,850 INFO L413 NwaCegarLoop]: 2213 mSDtfsCounter, 1438 mSDsluCounter, 5041 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 7254 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:29:33,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 7254 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 23:29:33,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16023 states. [2022-07-19 23:29:34,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16023 to 8031. [2022-07-19 23:29:34,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8031 states, 5937 states have (on average 1.346471281792151) internal successors, (7994), 6107 states have internal predecessors, (7994), 1566 states have call successors, (1566), 352 states have call predecessors, (1566), 527 states have return successors, (2203), 1659 states have call predecessors, (2203), 1563 states have call successors, (2203) [2022-07-19 23:29:34,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8031 states to 8031 states and 11763 transitions. [2022-07-19 23:29:34,573 INFO L78 Accepts]: Start accepts. Automaton has 8031 states and 11763 transitions. Word has length 152 [2022-07-19 23:29:34,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:29:34,574 INFO L495 AbstractCegarLoop]: Abstraction has 8031 states and 11763 transitions. [2022-07-19 23:29:34,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:29:34,575 INFO L276 IsEmpty]: Start isEmpty. Operand 8031 states and 11763 transitions. [2022-07-19 23:29:34,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-19 23:29:34,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:29:34,590 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:29:34,620 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 23:29:34,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:29:34,807 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:29:34,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:29:34,808 INFO L85 PathProgramCache]: Analyzing trace with hash 531912664, now seen corresponding path program 1 times [2022-07-19 23:29:34,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:29:34,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526433336] [2022-07-19 23:29:34,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:29:34,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:29:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:35,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:29:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:35,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:29:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:35,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 23:29:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:35,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 23:29:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:35,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:29:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:35,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:29:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:35,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:29:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:35,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 23:29:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:35,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:29:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:35,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:29:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:35,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:29:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:35,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:29:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:35,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:29:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:35,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:29:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 23:29:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:35,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:29:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 23:29:35,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:29:35,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526433336] [2022-07-19 23:29:35,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526433336] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:29:35,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142163167] [2022-07-19 23:29:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:29:35,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:29:35,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:29:35,271 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 23:29:35,272 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 23:29:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:35,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 23:29:35,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:29:36,015 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 23:29:36,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:29:36,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142163167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:29:36,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:29:36,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-07-19 23:29:36,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157045196] [2022-07-19 23:29:36,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:29:36,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:29:36,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:29:36,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:29:36,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:29:36,017 INFO L87 Difference]: Start difference. First operand 8031 states and 11763 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:29:36,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:29:36,481 INFO L93 Difference]: Finished difference Result 16277 states and 23887 transitions. [2022-07-19 23:29:36,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:29:36,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2022-07-19 23:29:36,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:29:36,522 INFO L225 Difference]: With dead ends: 16277 [2022-07-19 23:29:36,522 INFO L226 Difference]: Without dead ends: 8269 [2022-07-19 23:29:36,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:29:36,554 INFO L413 NwaCegarLoop]: 1289 mSDtfsCounter, 256 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:29:36,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 2273 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 23:29:36,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8269 states. [2022-07-19 23:29:37,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8269 to 8031. [2022-07-19 23:29:37,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8031 states, 5937 states have (on average 1.345123799898939) internal successors, (7986), 6099 states have internal predecessors, (7986), 1566 states have call successors, (1566), 352 states have call predecessors, (1566), 527 states have return successors, (2203), 1659 states have call predecessors, (2203), 1563 states have call successors, (2203) [2022-07-19 23:29:37,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8031 states to 8031 states and 11755 transitions. [2022-07-19 23:29:37,201 INFO L78 Accepts]: Start accepts. Automaton has 8031 states and 11755 transitions. Word has length 152 [2022-07-19 23:29:37,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:29:37,202 INFO L495 AbstractCegarLoop]: Abstraction has 8031 states and 11755 transitions. [2022-07-19 23:29:37,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:29:37,202 INFO L276 IsEmpty]: Start isEmpty. Operand 8031 states and 11755 transitions. [2022-07-19 23:29:37,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-19 23:29:37,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:29:37,214 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:29:37,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 23:29:37,435 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,SelfDestructingSolverStorable9 [2022-07-19 23:29:37,436 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:29:37,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:29:37,436 INFO L85 PathProgramCache]: Analyzing trace with hash 620818428, now seen corresponding path program 1 times [2022-07-19 23:29:37,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:29:37,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832360801] [2022-07-19 23:29:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:29:37,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:29:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:37,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:29:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:37,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:29:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:37,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 23:29:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:37,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 23:29:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:37,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:29:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:37,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:29:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:37,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:29:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:37,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 23:29:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:37,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 23:29:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:37,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:29:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:37,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:29:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:37,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 23:29:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:37,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:29:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:37,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:29:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:37,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:29:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:37,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 23:29:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:37,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:29:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:37,896 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 23:29:37,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:29:37,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832360801] [2022-07-19 23:29:37,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832360801] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:29:37,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538493232] [2022-07-19 23:29:37,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:29:37,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:29:37,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:29:37,899 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 23:29:37,900 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 23:29:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:38,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 2801 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-19 23:29:38,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:29:38,779 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 23:29:38,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:29:39,150 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 23:29:39,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538493232] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:29:39,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:29:39,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 31 [2022-07-19 23:29:39,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264734512] [2022-07-19 23:29:39,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:29:39,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-19 23:29:39,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:29:39,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-19 23:29:39,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=852, Unknown=0, NotChecked=0, Total=930 [2022-07-19 23:29:39,153 INFO L87 Difference]: Start difference. First operand 8031 states and 11755 transitions. Second operand has 31 states, 31 states have (on average 6.387096774193548) internal successors, (198), 17 states have internal predecessors, (198), 3 states have call successors, (44), 10 states have call predecessors, (44), 8 states have return successors, (36), 9 states have call predecessors, (36), 3 states have call successors, (36) [2022-07-19 23:29:48,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:29:48,657 INFO L93 Difference]: Finished difference Result 23225 states and 36925 transitions. [2022-07-19 23:29:48,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 23:29:48,657 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.387096774193548) internal successors, (198), 17 states have internal predecessors, (198), 3 states have call successors, (44), 10 states have call predecessors, (44), 8 states have return successors, (36), 9 states have call predecessors, (36), 3 states have call successors, (36) Word has length 157 [2022-07-19 23:29:48,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:29:48,748 INFO L225 Difference]: With dead ends: 23225 [2022-07-19 23:29:48,748 INFO L226 Difference]: Without dead ends: 15201 [2022-07-19 23:29:48,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=238, Invalid=1832, Unknown=0, NotChecked=0, Total=2070 [2022-07-19 23:29:48,794 INFO L413 NwaCegarLoop]: 1277 mSDtfsCounter, 3697 mSDsluCounter, 17277 mSDsCounter, 0 mSdLazyCounter, 11216 mSolverCounterSat, 2090 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3839 SdHoareTripleChecker+Valid, 18554 SdHoareTripleChecker+Invalid, 13306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2090 IncrementalHoareTripleChecker+Valid, 11216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:29:48,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3839 Valid, 18554 Invalid, 13306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2090 Valid, 11216 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-07-19 23:29:48,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15201 states. [2022-07-19 23:29:49,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15201 to 8095. [2022-07-19 23:29:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8095 states, 5989 states have (on average 1.3421272332609784) internal successors, (8038), 6147 states have internal predecessors, (8038), 1566 states have call successors, (1566), 352 states have call predecessors, (1566), 539 states have return successors, (2243), 1675 states have call predecessors, (2243), 1563 states have call successors, (2243) [2022-07-19 23:29:49,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8095 states to 8095 states and 11847 transitions. [2022-07-19 23:29:49,702 INFO L78 Accepts]: Start accepts. Automaton has 8095 states and 11847 transitions. Word has length 157 [2022-07-19 23:29:49,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:29:49,703 INFO L495 AbstractCegarLoop]: Abstraction has 8095 states and 11847 transitions. [2022-07-19 23:29:49,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.387096774193548) internal successors, (198), 17 states have internal predecessors, (198), 3 states have call successors, (44), 10 states have call predecessors, (44), 8 states have return successors, (36), 9 states have call predecessors, (36), 3 states have call successors, (36) [2022-07-19 23:29:49,704 INFO L276 IsEmpty]: Start isEmpty. Operand 8095 states and 11847 transitions. [2022-07-19 23:29:49,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-19 23:29:49,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:29:49,716 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:29:49,751 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 23:29:49,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:29:49,929 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:29:49,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:29:49,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1788786096, now seen corresponding path program 1 times [2022-07-19 23:29:49,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:29:49,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416191522] [2022-07-19 23:29:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:29:49,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:29:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:29:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:29:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 23:29:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 23:29:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:29:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:29:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 23:29:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:29:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:29:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:29:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 23:29:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:29:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:29:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 23:29:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:29:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:29:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:29:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 23:29:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:29:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:50,366 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 23:29:50,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:29:50,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416191522] [2022-07-19 23:29:50,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416191522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:29:50,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:29:50,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 23:29:50,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311918717] [2022-07-19 23:29:50,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:29:50,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 23:29:50,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:29:50,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 23:29:50,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:29:50,369 INFO L87 Difference]: Start difference. First operand 8095 states and 11847 transitions. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (19), 10 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-19 23:29:54,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:29:54,686 INFO L93 Difference]: Finished difference Result 17480 states and 25811 transitions. [2022-07-19 23:29:54,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 23:29:54,687 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (19), 10 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 169 [2022-07-19 23:29:54,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:29:54,738 INFO L225 Difference]: With dead ends: 17480 [2022-07-19 23:29:54,738 INFO L226 Difference]: Without dead ends: 9408 [2022-07-19 23:29:54,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-07-19 23:29:54,771 INFO L413 NwaCegarLoop]: 1003 mSDtfsCounter, 1764 mSDsluCounter, 4622 mSDsCounter, 0 mSdLazyCounter, 3100 mSolverCounterSat, 1238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 5625 SdHoareTripleChecker+Invalid, 4338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1238 IncrementalHoareTripleChecker+Valid, 3100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-19 23:29:54,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1819 Valid, 5625 Invalid, 4338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1238 Valid, 3100 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-19 23:29:54,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9408 states. [2022-07-19 23:29:55,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9408 to 8135. [2022-07-19 23:29:55,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8135 states, 6021 states have (on average 1.3416376017272877) internal successors, (8078), 6171 states have internal predecessors, (8078), 1574 states have call successors, (1574), 352 states have call predecessors, (1574), 539 states have return successors, (2251), 1691 states have call predecessors, (2251), 1571 states have call successors, (2251) [2022-07-19 23:29:55,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8135 states to 8135 states and 11903 transitions. [2022-07-19 23:29:55,348 INFO L78 Accepts]: Start accepts. Automaton has 8135 states and 11903 transitions. Word has length 169 [2022-07-19 23:29:55,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:29:55,348 INFO L495 AbstractCegarLoop]: Abstraction has 8135 states and 11903 transitions. [2022-07-19 23:29:55,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (19), 10 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-19 23:29:55,349 INFO L276 IsEmpty]: Start isEmpty. Operand 8135 states and 11903 transitions. [2022-07-19 23:29:55,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-19 23:29:55,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:29:55,361 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:29:55,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 23:29:55,362 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:29:55,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:29:55,362 INFO L85 PathProgramCache]: Analyzing trace with hash -92495082, now seen corresponding path program 1 times [2022-07-19 23:29:55,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:29:55,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997827018] [2022-07-19 23:29:55,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:29:55,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:29:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:29:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:29:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 23:29:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 23:29:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:29:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:29:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 23:29:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:29:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:29:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 23:29:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 23:29:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:29:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:29:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:29:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 23:29:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:29:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:29:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:29:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 23:29:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:29:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:29:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-19 23:29:55,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:29:55,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997827018] [2022-07-19 23:29:55,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997827018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:29:55,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:29:55,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 23:29:55,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442145425] [2022-07-19 23:29:55,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:29:55,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 23:29:55,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:29:55,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 23:29:55,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-19 23:29:55,813 INFO L87 Difference]: Start difference. First operand 8135 states and 11903 transitions. Second operand has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 10 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:30:00,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:00,478 INFO L93 Difference]: Finished difference Result 17522 states and 25845 transitions. [2022-07-19 23:30:00,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 23:30:00,479 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 10 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 175 [2022-07-19 23:30:00,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:00,523 INFO L225 Difference]: With dead ends: 17522 [2022-07-19 23:30:00,523 INFO L226 Difference]: Without dead ends: 9406 [2022-07-19 23:30:00,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2022-07-19 23:30:00,551 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 1768 mSDsluCounter, 4632 mSDsCounter, 0 mSdLazyCounter, 3282 mSolverCounterSat, 1226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 5628 SdHoareTripleChecker+Invalid, 4508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1226 IncrementalHoareTripleChecker+Valid, 3282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 23:30:00,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1823 Valid, 5628 Invalid, 4508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1226 Valid, 3282 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-19 23:30:00,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9406 states. [2022-07-19 23:30:01,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9406 to 8136. [2022-07-19 23:30:01,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8136 states, 6022 states have (on average 1.3415808701428098) internal successors, (8079), 6172 states have internal predecessors, (8079), 1574 states have call successors, (1574), 352 states have call predecessors, (1574), 539 states have return successors, (2251), 1691 states have call predecessors, (2251), 1571 states have call successors, (2251) [2022-07-19 23:30:01,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8136 states to 8136 states and 11904 transitions. [2022-07-19 23:30:01,261 INFO L78 Accepts]: Start accepts. Automaton has 8136 states and 11904 transitions. Word has length 175 [2022-07-19 23:30:01,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:01,262 INFO L495 AbstractCegarLoop]: Abstraction has 8136 states and 11904 transitions. [2022-07-19 23:30:01,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 10 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:30:01,262 INFO L276 IsEmpty]: Start isEmpty. Operand 8136 states and 11904 transitions. [2022-07-19 23:30:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-19 23:30:01,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:01,275 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:30:01,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 23:30:01,275 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:01,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:01,276 INFO L85 PathProgramCache]: Analyzing trace with hash -933269753, now seen corresponding path program 1 times [2022-07-19 23:30:01,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:30:01,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979376603] [2022-07-19 23:30:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:01,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:30:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:30:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:30:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 23:30:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 23:30:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 23:30:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 23:30:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:30:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 23:30:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:30:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:30:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:30:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 23:30:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:30:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:01,690 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-19 23:30:01,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:30:01,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979376603] [2022-07-19 23:30:01,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979376603] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:30:01,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593985156] [2022-07-19 23:30:01,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:01,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:30:01,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:30:01,696 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 23:30:01,700 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 23:30:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:02,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 2894 conjuncts, 112 conjunts are in the unsatisfiable core [2022-07-19 23:30:02,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:30:02,722 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 23:30:02,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 23:30:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-19 23:30:02,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:30:02,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593985156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:30:02,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:30:02,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2022-07-19 23:30:02,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766751976] [2022-07-19 23:30:02,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:30:02,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 23:30:02,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:30:02,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 23:30:02,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2022-07-19 23:30:02,771 INFO L87 Difference]: Start difference. First operand 8136 states and 11904 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-19 23:30:04,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:04,689 INFO L93 Difference]: Finished difference Result 18024 states and 26640 transitions. [2022-07-19 23:30:04,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 23:30:04,689 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) Word has length 176 [2022-07-19 23:30:04,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:04,737 INFO L225 Difference]: With dead ends: 18024 [2022-07-19 23:30:04,737 INFO L226 Difference]: Without dead ends: 9912 [2022-07-19 23:30:04,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2022-07-19 23:30:04,766 INFO L413 NwaCegarLoop]: 2199 mSDtfsCounter, 1850 mSDsluCounter, 18759 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 20958 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:30:04,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 20958 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 23:30:04,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9912 states. [2022-07-19 23:30:05,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9912 to 8103. [2022-07-19 23:30:05,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8103 states, 5997 states have (on average 1.3408370852092713) internal successors, (8041), 6147 states have internal predecessors, (8041), 1566 states have call successors, (1566), 352 states have call predecessors, (1566), 539 states have return successors, (2243), 1683 states have call predecessors, (2243), 1563 states have call successors, (2243) [2022-07-19 23:30:05,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8103 states to 8103 states and 11850 transitions. [2022-07-19 23:30:05,443 INFO L78 Accepts]: Start accepts. Automaton has 8103 states and 11850 transitions. Word has length 176 [2022-07-19 23:30:05,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:05,443 INFO L495 AbstractCegarLoop]: Abstraction has 8103 states and 11850 transitions. [2022-07-19 23:30:05,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-19 23:30:05,444 INFO L276 IsEmpty]: Start isEmpty. Operand 8103 states and 11850 transitions. [2022-07-19 23:30:05,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-19 23:30:05,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:05,458 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:05,494 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 23:30:05,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:30:05,672 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:05,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:05,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1055633972, now seen corresponding path program 1 times [2022-07-19 23:30:05,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:30:05,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43194596] [2022-07-19 23:30:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:05,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:30:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:05,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:05,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:30:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:05,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:30:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:05,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 23:30:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:05,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:05,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:05,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 23:30:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:05,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:05,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:05,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 23:30:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:06,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 23:30:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:06,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:06,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:30:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:06,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 23:30:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:06,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:06,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:06,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:30:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:06,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-19 23:30:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:06,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:30:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:06,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:30:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:06,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:30:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:06,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 23:30:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:06,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:30:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-19 23:30:06,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:30:06,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43194596] [2022-07-19 23:30:06,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43194596] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:30:06,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198686318] [2022-07-19 23:30:06,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:06,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:30:06,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:30:06,157 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 23:30:06,158 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 23:30:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:07,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 23:30:07,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:30:07,248 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-19 23:30:07,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:30:07,423 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-19 23:30:07,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198686318] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:30:07,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:30:07,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 21 [2022-07-19 23:30:07,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195292050] [2022-07-19 23:30:07,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:30:07,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 23:30:07,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:30:07,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 23:30:07,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2022-07-19 23:30:07,426 INFO L87 Difference]: Start difference. First operand 8103 states and 11850 transitions. Second operand has 21 states, 21 states have (on average 10.857142857142858) internal successors, (228), 13 states have internal predecessors, (228), 4 states have call successors, (54), 10 states have call predecessors, (54), 5 states have return successors, (46), 5 states have call predecessors, (46), 4 states have call successors, (46) [2022-07-19 23:30:16,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:16,734 INFO L93 Difference]: Finished difference Result 18431 states and 27411 transitions. [2022-07-19 23:30:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 23:30:16,734 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.857142857142858) internal successors, (228), 13 states have internal predecessors, (228), 4 states have call successors, (54), 10 states have call predecessors, (54), 5 states have return successors, (46), 5 states have call predecessors, (46), 4 states have call successors, (46) Word has length 196 [2022-07-19 23:30:16,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:16,786 INFO L225 Difference]: With dead ends: 18431 [2022-07-19 23:30:16,786 INFO L226 Difference]: Without dead ends: 10346 [2022-07-19 23:30:16,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=293, Invalid=1429, Unknown=0, NotChecked=0, Total=1722 [2022-07-19 23:30:16,817 INFO L413 NwaCegarLoop]: 1308 mSDtfsCounter, 8016 mSDsluCounter, 10219 mSDsCounter, 0 mSdLazyCounter, 8111 mSolverCounterSat, 5153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8114 SdHoareTripleChecker+Valid, 11527 SdHoareTripleChecker+Invalid, 13264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5153 IncrementalHoareTripleChecker+Valid, 8111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:30:16,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8114 Valid, 11527 Invalid, 13264 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5153 Valid, 8111 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-07-19 23:30:16,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10346 states. [2022-07-19 23:30:17,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10346 to 7838. [2022-07-19 23:30:17,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7838 states, 5812 states have (on average 1.3406744666207846) internal successors, (7792), 5954 states have internal predecessors, (7792), 1492 states have call successors, (1492), 348 states have call predecessors, (1492), 533 states have return successors, (2145), 1615 states have call predecessors, (2145), 1489 states have call successors, (2145) [2022-07-19 23:30:17,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7838 states to 7838 states and 11429 transitions. [2022-07-19 23:30:17,510 INFO L78 Accepts]: Start accepts. Automaton has 7838 states and 11429 transitions. Word has length 196 [2022-07-19 23:30:17,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:17,510 INFO L495 AbstractCegarLoop]: Abstraction has 7838 states and 11429 transitions. [2022-07-19 23:30:17,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.857142857142858) internal successors, (228), 13 states have internal predecessors, (228), 4 states have call successors, (54), 10 states have call predecessors, (54), 5 states have return successors, (46), 5 states have call predecessors, (46), 4 states have call successors, (46) [2022-07-19 23:30:17,510 INFO L276 IsEmpty]: Start isEmpty. Operand 7838 states and 11429 transitions. [2022-07-19 23:30:17,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-19 23:30:17,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:17,523 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:17,555 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 23:30:17,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-19 23:30:17,740 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:17,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:17,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1991704043, now seen corresponding path program 2 times [2022-07-19 23:30:17,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:30:17,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800204881] [2022-07-19 23:30:17,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:17,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:30:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:30:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 23:30:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:30:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 23:30:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:30:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:30:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:30:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 23:30:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:30:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-19 23:30:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:30:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:30:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:30:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 23:30:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:30:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:18,657 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-19 23:30:18,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:30:18,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800204881] [2022-07-19 23:30:18,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800204881] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:30:18,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401302585] [2022-07-19 23:30:18,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 23:30:18,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:30:18,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:30:18,660 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:30:18,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 23:30:19,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 23:30:19,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 23:30:19,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 3043 conjuncts, 116 conjunts are in the unsatisfiable core [2022-07-19 23:30:19,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:30:19,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 23:30:19,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 23:30:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-19 23:30:19,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:30:20,503 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-19 23:30:20,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401302585] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:30:20,504 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 23:30:20,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12, 8] total 30 [2022-07-19 23:30:20,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320856744] [2022-07-19 23:30:20,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 23:30:20,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-19 23:30:20,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:30:20,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-19 23:30:20,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-07-19 23:30:20,507 INFO L87 Difference]: Start difference. First operand 7838 states and 11429 transitions. Second operand has 30 states, 30 states have (on average 5.9) internal successors, (177), 19 states have internal predecessors, (177), 8 states have call successors, (49), 11 states have call predecessors, (49), 8 states have return successors, (36), 12 states have call predecessors, (36), 8 states have call successors, (36) [2022-07-19 23:30:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:42,509 INFO L93 Difference]: Finished difference Result 20972 states and 31872 transitions. [2022-07-19 23:30:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-19 23:30:42,509 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.9) internal successors, (177), 19 states have internal predecessors, (177), 8 states have call successors, (49), 11 states have call predecessors, (49), 8 states have return successors, (36), 12 states have call predecessors, (36), 8 states have call successors, (36) Word has length 199 [2022-07-19 23:30:42,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:42,569 INFO L225 Difference]: With dead ends: 20972 [2022-07-19 23:30:42,569 INFO L226 Difference]: Without dead ends: 13161 [2022-07-19 23:30:42,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 443 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=613, Invalid=3677, Unknown=0, NotChecked=0, Total=4290 [2022-07-19 23:30:42,601 INFO L413 NwaCegarLoop]: 1897 mSDtfsCounter, 9754 mSDsluCounter, 25058 mSDsCounter, 0 mSdLazyCounter, 21571 mSolverCounterSat, 4947 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9892 SdHoareTripleChecker+Valid, 26955 SdHoareTripleChecker+Invalid, 26518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4947 IncrementalHoareTripleChecker+Valid, 21571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:30:42,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9892 Valid, 26955 Invalid, 26518 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4947 Valid, 21571 Invalid, 0 Unknown, 0 Unchecked, 19.3s Time] [2022-07-19 23:30:42,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13161 states. [2022-07-19 23:30:43,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13161 to 7810. [2022-07-19 23:30:43,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7810 states, 5792 states have (on average 1.339779005524862) internal successors, (7760), 5934 states have internal predecessors, (7760), 1484 states have call successors, (1484), 348 states have call predecessors, (1484), 533 states have return successors, (2137), 1607 states have call predecessors, (2137), 1481 states have call successors, (2137) [2022-07-19 23:30:43,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7810 states to 7810 states and 11381 transitions. [2022-07-19 23:30:43,407 INFO L78 Accepts]: Start accepts. Automaton has 7810 states and 11381 transitions. Word has length 199 [2022-07-19 23:30:43,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:43,408 INFO L495 AbstractCegarLoop]: Abstraction has 7810 states and 11381 transitions. [2022-07-19 23:30:43,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.9) internal successors, (177), 19 states have internal predecessors, (177), 8 states have call successors, (49), 11 states have call predecessors, (49), 8 states have return successors, (36), 12 states have call predecessors, (36), 8 states have call successors, (36) [2022-07-19 23:30:43,408 INFO L276 IsEmpty]: Start isEmpty. Operand 7810 states and 11381 transitions. [2022-07-19 23:30:43,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-19 23:30:43,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:43,420 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:30:43,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 23:30:43,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-19 23:30:43,636 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:43,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:43,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1741297651, now seen corresponding path program 1 times [2022-07-19 23:30:43,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:30:43,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007502567] [2022-07-19 23:30:43,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:43,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:30:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:43,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:43,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:30:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:43,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 23:30:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:43,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:30:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:43,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:43,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:43,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 23:30:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:43,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:43,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:43,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:30:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:43,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:30:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:44,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:44,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:44,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:30:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:44,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 23:30:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:44,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:44,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:30:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:44,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-19 23:30:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:44,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:44,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-19 23:30:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:44,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-19 23:30:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:44,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-19 23:30:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:44,079 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-19 23:30:44,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:30:44,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007502567] [2022-07-19 23:30:44,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007502567] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:30:44,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836111244] [2022-07-19 23:30:44,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:44,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:30:44,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:30:44,083 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:30:44,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 23:30:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:44,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 3222 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:30:44,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:30:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-19 23:30:44,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:30:44,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836111244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:30:44,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 23:30:44,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 11 [2022-07-19 23:30:44,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942087129] [2022-07-19 23:30:44,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:30:44,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:30:44,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:30:44,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:30:44,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-19 23:30:44,991 INFO L87 Difference]: Start difference. First operand 7810 states and 11381 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 23:30:46,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:46,775 INFO L93 Difference]: Finished difference Result 23381 states and 34090 transitions. [2022-07-19 23:30:46,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 23:30:46,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 202 [2022-07-19 23:30:46,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:46,854 INFO L225 Difference]: With dead ends: 23381 [2022-07-19 23:30:46,854 INFO L226 Difference]: Without dead ends: 23364 [2022-07-19 23:30:46,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-19 23:30:46,868 INFO L413 NwaCegarLoop]: 2392 mSDtfsCounter, 2108 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 4453 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:30:46,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 4453 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 23:30:46,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23364 states. [2022-07-19 23:30:48,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23364 to 23326. [2022-07-19 23:30:48,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23326 states, 17292 states have (on average 1.340735600277585) internal successors, (23184), 17730 states have internal predecessors, (23184), 4440 states have call successors, (4440), 1036 states have call predecessors, (4440), 1593 states have return successors, (6405), 4799 states have call predecessors, (6405), 4437 states have call successors, (6405) [2022-07-19 23:30:48,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23326 states to 23326 states and 34029 transitions. [2022-07-19 23:30:48,692 INFO L78 Accepts]: Start accepts. Automaton has 23326 states and 34029 transitions. Word has length 202 [2022-07-19 23:30:48,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:48,692 INFO L495 AbstractCegarLoop]: Abstraction has 23326 states and 34029 transitions. [2022-07-19 23:30:48,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 23:30:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 23326 states and 34029 transitions. [2022-07-19 23:30:48,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-19 23:30:48,710 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:48,711 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:30:48,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 23:30:48,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:30:48,928 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:48,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:48,928 INFO L85 PathProgramCache]: Analyzing trace with hash 730180401, now seen corresponding path program 1 times [2022-07-19 23:30:48,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:30:48,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468911956] [2022-07-19 23:30:48,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:48,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:30:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:30:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 23:30:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:30:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 23:30:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:30:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:30:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:30:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 23:30:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:30:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-19 23:30:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-19 23:30:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-19 23:30:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-19 23:30:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:49,307 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-19 23:30:49,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:30:49,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468911956] [2022-07-19 23:30:49,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468911956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:30:49,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:30:49,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 23:30:49,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633861990] [2022-07-19 23:30:49,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:30:49,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 23:30:49,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:30:49,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 23:30:49,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:30:49,310 INFO L87 Difference]: Start difference. First operand 23326 states and 34029 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-19 23:31:00,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:31:00,808 INFO L93 Difference]: Finished difference Result 84685 states and 126400 transitions. [2022-07-19 23:31:00,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 23:31:00,809 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 202 [2022-07-19 23:31:00,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:31:01,054 INFO L225 Difference]: With dead ends: 84685 [2022-07-19 23:31:01,054 INFO L226 Difference]: Without dead ends: 61386 [2022-07-19 23:31:01,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2022-07-19 23:31:01,134 INFO L413 NwaCegarLoop]: 1190 mSDtfsCounter, 5666 mSDsluCounter, 3754 mSDsCounter, 0 mSdLazyCounter, 3533 mSolverCounterSat, 3652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5768 SdHoareTripleChecker+Valid, 4944 SdHoareTripleChecker+Invalid, 7185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3652 IncrementalHoareTripleChecker+Valid, 3533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:31:01,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5768 Valid, 4944 Invalid, 7185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3652 Valid, 3533 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-07-19 23:31:01,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61386 states. [2022-07-19 23:31:03,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61386 to 22274. [2022-07-19 23:31:03,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22274 states, 16492 states have (on average 1.343439243269464) internal successors, (22156), 16894 states have internal predecessors, (22156), 4344 states have call successors, (4344), 1036 states have call predecessors, (4344), 1437 states have return successors, (5709), 4607 states have call predecessors, (5709), 4341 states have call successors, (5709) [2022-07-19 23:31:04,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22274 states to 22274 states and 32209 transitions. [2022-07-19 23:31:04,042 INFO L78 Accepts]: Start accepts. Automaton has 22274 states and 32209 transitions. Word has length 202 [2022-07-19 23:31:04,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:31:04,043 INFO L495 AbstractCegarLoop]: Abstraction has 22274 states and 32209 transitions. [2022-07-19 23:31:04,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-19 23:31:04,043 INFO L276 IsEmpty]: Start isEmpty. Operand 22274 states and 32209 transitions. [2022-07-19 23:31:04,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-19 23:31:04,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:31:04,058 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:31:04,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 23:31:04,058 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:31:04,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:31:04,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1833483783, now seen corresponding path program 1 times [2022-07-19 23:31:04,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:31:04,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906787775] [2022-07-19 23:31:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:31:04,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:31:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:04,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:31:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:04,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:31:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:04,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 23:31:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:04,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:31:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:04,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:31:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:04,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:31:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:04,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 23:31:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:05,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:31:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:05,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:31:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:05,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:31:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:05,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:31:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:05,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:31:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:05,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:31:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:05,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:31:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:05,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 23:31:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:05,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:31:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:05,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:31:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:05,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-19 23:31:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:05,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:31:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:05,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 23:31:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:06,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 23:31:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:06,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:31:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:06,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:31:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:06,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 23:31:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:06,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 23:31:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 17 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-19 23:31:06,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:31:06,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906787775] [2022-07-19 23:31:06,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906787775] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:31:06,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139228004] [2022-07-19 23:31:06,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:31:06,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:31:06,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:31:06,416 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 23:31:06,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 23:31:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:08,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 3119 conjuncts, 140 conjunts are in the unsatisfiable core [2022-07-19 23:31:08,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:31:08,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 23:31:08,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 23:31:08,889 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 23:31:08,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 23:31:08,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 23:31:08,899 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 23:31:09,188 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-19 23:31:09,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 23:31:09,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 23:31:09,194 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 23:31:09,670 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-07-19 23:31:09,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2022-07-19 23:31:09,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-07-19 23:31:09,867 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 54 proven. 11 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 23:31:09,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:31:31,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139228004] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 23:31:31,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 23:31:31,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 22] total 52 [2022-07-19 23:31:31,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529697470] [2022-07-19 23:31:31,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 23:31:31,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-19 23:31:31,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:31:31,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-19 23:31:31,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=3498, Unknown=4, NotChecked=0, Total=3782 [2022-07-19 23:31:31,624 INFO L87 Difference]: Start difference. First operand 22274 states and 32209 transitions. Second operand has 52 states, 48 states have (on average 4.375) internal successors, (210), 37 states have internal predecessors, (210), 17 states have call successors, (43), 14 states have call predecessors, (43), 14 states have return successors, (36), 21 states have call predecessors, (36), 16 states have call successors, (36) [2022-07-19 23:32:11,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:32:11,712 INFO L93 Difference]: Finished difference Result 66574 states and 102521 transitions. [2022-07-19 23:32:11,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-07-19 23:32:11,712 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 48 states have (on average 4.375) internal successors, (210), 37 states have internal predecessors, (210), 17 states have call successors, (43), 14 states have call predecessors, (43), 14 states have return successors, (36), 21 states have call predecessors, (36), 16 states have call successors, (36) Word has length 212 [2022-07-19 23:32:11,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:32:11,912 INFO L225 Difference]: With dead ends: 66574 [2022-07-19 23:32:11,913 INFO L226 Difference]: Without dead ends: 44327 [2022-07-19 23:32:11,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 328 SyntacticMatches, 5 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7088 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=2210, Invalid=21656, Unknown=4, NotChecked=0, Total=23870 [2022-07-19 23:32:11,983 INFO L413 NwaCegarLoop]: 1855 mSDtfsCounter, 11584 mSDsluCounter, 37284 mSDsCounter, 0 mSdLazyCounter, 30863 mSolverCounterSat, 6983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11703 SdHoareTripleChecker+Valid, 39139 SdHoareTripleChecker+Invalid, 40766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 6983 IncrementalHoareTripleChecker+Valid, 30863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2920 IncrementalHoareTripleChecker+Unchecked, 27.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:32:11,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11703 Valid, 39139 Invalid, 40766 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [6983 Valid, 30863 Invalid, 0 Unknown, 2920 Unchecked, 27.7s Time] [2022-07-19 23:32:12,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44327 states. [2022-07-19 23:32:15,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44327 to 23102. [2022-07-19 23:32:15,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23102 states, 17080 states have (on average 1.3379391100702576) internal successors, (22852), 17506 states have internal predecessors, (22852), 4476 states have call successors, (4476), 1108 states have call predecessors, (4476), 1545 states have return successors, (5973), 4751 states have call predecessors, (5973), 4473 states have call successors, (5973) [2022-07-19 23:32:15,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23102 states to 23102 states and 33301 transitions. [2022-07-19 23:32:15,209 INFO L78 Accepts]: Start accepts. Automaton has 23102 states and 33301 transitions. Word has length 212 [2022-07-19 23:32:15,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:32:15,210 INFO L495 AbstractCegarLoop]: Abstraction has 23102 states and 33301 transitions. [2022-07-19 23:32:15,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 48 states have (on average 4.375) internal successors, (210), 37 states have internal predecessors, (210), 17 states have call successors, (43), 14 states have call predecessors, (43), 14 states have return successors, (36), 21 states have call predecessors, (36), 16 states have call successors, (36) [2022-07-19 23:32:15,210 INFO L276 IsEmpty]: Start isEmpty. Operand 23102 states and 33301 transitions. [2022-07-19 23:32:15,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-19 23:32:15,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:32:15,221 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:32:15,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 23:32:15,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 23:32:15,423 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:32:15,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:32:15,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2098825928, now seen corresponding path program 1 times [2022-07-19 23:32:15,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:32:15,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180074193] [2022-07-19 23:32:15,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:15,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:32:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:32:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 23:32:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:32:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 23:32:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:32:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:32:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:32:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 23:32:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:32:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-19 23:32:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-19 23:32:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-19 23:32:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-19 23:32:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-19 23:32:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:15,895 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-19 23:32:15,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:32:15,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180074193] [2022-07-19 23:32:15,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180074193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:32:15,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:32:15,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 23:32:15,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683055304] [2022-07-19 23:32:15,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:32:15,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 23:32:15,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:32:15,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 23:32:15,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:32:15,898 INFO L87 Difference]: Start difference. First operand 23102 states and 33301 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-19 23:32:25,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:32:25,944 INFO L93 Difference]: Finished difference Result 53277 states and 78143 transitions. [2022-07-19 23:32:25,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 23:32:25,945 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 212 [2022-07-19 23:32:25,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:32:26,053 INFO L225 Difference]: With dead ends: 53277 [2022-07-19 23:32:26,054 INFO L226 Difference]: Without dead ends: 29854 [2022-07-19 23:32:26,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2022-07-19 23:32:26,102 INFO L413 NwaCegarLoop]: 1415 mSDtfsCounter, 3595 mSDsluCounter, 3626 mSDsCounter, 0 mSdLazyCounter, 3335 mSolverCounterSat, 2580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3680 SdHoareTripleChecker+Valid, 5041 SdHoareTripleChecker+Invalid, 5915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2580 IncrementalHoareTripleChecker+Valid, 3335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:32:26,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3680 Valid, 5041 Invalid, 5915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2580 Valid, 3335 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-07-19 23:32:26,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29854 states. [2022-07-19 23:32:28,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29854 to 22562. [2022-07-19 23:32:28,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22562 states, 16630 states have (on average 1.3303668069753458) internal successors, (22124), 17016 states have internal predecessors, (22124), 4416 states have call successors, (4416), 1078 states have call predecessors, (4416), 1515 states have return successors, (5913), 4721 states have call predecessors, (5913), 4413 states have call successors, (5913) [2022-07-19 23:32:28,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22562 states to 22562 states and 32453 transitions. [2022-07-19 23:32:28,618 INFO L78 Accepts]: Start accepts. Automaton has 22562 states and 32453 transitions. Word has length 212 [2022-07-19 23:32:28,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:32:28,619 INFO L495 AbstractCegarLoop]: Abstraction has 22562 states and 32453 transitions. [2022-07-19 23:32:28,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-19 23:32:28,619 INFO L276 IsEmpty]: Start isEmpty. Operand 22562 states and 32453 transitions. [2022-07-19 23:32:28,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-19 23:32:28,630 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:32:28,630 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:32:28,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 23:32:28,631 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:32:28,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:32:28,631 INFO L85 PathProgramCache]: Analyzing trace with hash -2079284806, now seen corresponding path program 1 times [2022-07-19 23:32:28,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:32:28,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311420613] [2022-07-19 23:32:28,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:28,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:32:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:32:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 23:32:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:32:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 23:32:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:32:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:32:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:32:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 23:32:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:32:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-19 23:32:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-19 23:32:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-19 23:32:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-19 23:32:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-19 23:32:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:28,948 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-19 23:32:28,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:32:28,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311420613] [2022-07-19 23:32:28,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311420613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:32:28,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:32:28,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 23:32:28,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121926662] [2022-07-19 23:32:28,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:32:28,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 23:32:28,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:32:28,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 23:32:28,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:32:28,950 INFO L87 Difference]: Start difference. First operand 22562 states and 32453 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:32:33,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:32:33,437 INFO L93 Difference]: Finished difference Result 37057 states and 53972 transitions. [2022-07-19 23:32:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 23:32:33,438 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 212 [2022-07-19 23:32:33,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:32:33,496 INFO L225 Difference]: With dead ends: 37057 [2022-07-19 23:32:33,496 INFO L226 Difference]: Without dead ends: 14521 [2022-07-19 23:32:33,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-07-19 23:32:33,716 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 2697 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 1942 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2723 SdHoareTripleChecker+Valid, 3036 SdHoareTripleChecker+Invalid, 3456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1942 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 23:32:33,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2723 Valid, 3036 Invalid, 3456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1942 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 23:32:33,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14521 states. [2022-07-19 23:32:35,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14521 to 11016. [2022-07-19 23:32:35,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11016 states, 8095 states have (on average 1.3268684373069797) internal successors, (10741), 8273 states have internal predecessors, (10741), 2177 states have call successors, (2177), 525 states have call predecessors, (2177), 743 states have return successors, (2924), 2340 states have call predecessors, (2924), 2174 states have call successors, (2924) [2022-07-19 23:32:35,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11016 states to 11016 states and 15842 transitions. [2022-07-19 23:32:35,128 INFO L78 Accepts]: Start accepts. Automaton has 11016 states and 15842 transitions. Word has length 212 [2022-07-19 23:32:35,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:32:35,129 INFO L495 AbstractCegarLoop]: Abstraction has 11016 states and 15842 transitions. [2022-07-19 23:32:35,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:32:35,129 INFO L276 IsEmpty]: Start isEmpty. Operand 11016 states and 15842 transitions. [2022-07-19 23:32:35,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-07-19 23:32:35,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:32:35,137 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:32:35,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 23:32:35,137 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:32:35,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:32:35,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1018479461, now seen corresponding path program 1 times [2022-07-19 23:32:35,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:32:35,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130654966] [2022-07-19 23:32:35,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:35,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:32:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 23:32:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 23:32:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:32:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 23:32:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:32:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 23:32:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 23:32:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 23:32:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:32:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-19 23:32:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:35,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1