./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--media--rc--imon.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.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 1dadd209c6e3ebdaafa15f295f1ec8ec38d24c8a1f9b514f05808fa8c7c3e21c --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:38:17,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:38:17,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:38:17,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:38:17,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:38:17,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:38:17,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:38:17,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:38:17,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:38:17,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:38:17,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:38:17,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:38:17,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:38:17,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:38:17,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:38:17,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:38:17,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:38:17,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:38:17,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:38:17,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:38:17,735 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:38:17,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:38:17,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:38:17,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:38:17,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:38:17,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:38:17,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:38:17,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:38:17,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:38:17,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:38:17,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:38:17,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:38:17,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:38:17,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:38:17,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:38:17,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:38:17,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:38:17,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:38:17,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:38:17,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:38:17,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:38:17,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:38:17,751 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:38:17,768 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:38:17,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:38:17,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:38:17,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:38:17,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:38:17,770 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:38:17,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:38:17,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:38:17,771 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:38:17,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:38:17,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:38:17,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:38:17,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:38:17,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:38:17,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:38:17,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:38:17,773 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:38:17,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:38:17,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:38:17,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:38:17,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:38:17,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:38:17,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:38:17,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:38:17,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:38:17,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:38:17,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:38:17,775 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:38:17,775 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:38:17,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:38:17,776 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1dadd209c6e3ebdaafa15f295f1ec8ec38d24c8a1f9b514f05808fa8c7c3e21c [2022-07-22 23:38:17,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:38:18,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:38:18,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:38:18,021 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:38:18,023 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:38:18,025 INFO L432 ainManager$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--media--rc--imon.ko-entry_point.cil.out.i [2022-07-22 23:38:18,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2deef8dd/274ad844a9504743beebb23050f83db1/FLAG2e14bdb26 [2022-07-22 23:38:18,771 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:38:18,771 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--media--rc--imon.ko-entry_point.cil.out.i [2022-07-22 23:38:18,813 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2deef8dd/274ad844a9504743beebb23050f83db1/FLAG2e14bdb26 [2022-07-22 23:38:19,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2deef8dd/274ad844a9504743beebb23050f83db1 [2022-07-22 23:38:19,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:38:19,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:38:19,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:38:19,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:38:19,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:38:19,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:38:19" (1/1) ... [2022-07-22 23:38:19,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b37a212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:38:19, skipping insertion in model container [2022-07-22 23:38:19,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:38:19" (1/1) ... [2022-07-22 23:38:19,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:38:19,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:38:19,977 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--media--rc--imon.ko-entry_point.cil.out.i[117505,117518] [2022-07-22 23:38:20,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:38:20,749 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:38:20,849 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--media--rc--imon.ko-entry_point.cil.out.i[117505,117518] [2022-07-22 23:38:21,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:38:21,224 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:38:21,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:38:21 WrapperNode [2022-07-22 23:38:21,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:38:21,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:38:21,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:38:21,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:38:21,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:38:21" (1/1) ... [2022-07-22 23:38:21,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:38:21" (1/1) ... [2022-07-22 23:38:23,046 INFO L137 Inliner]: procedures = 229, calls = 2530, calls flagged for inlining = 102, calls inlined = 99, statements flattened = 5007 [2022-07-22 23:38:23,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:38:23,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:38:23,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:38:23,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:38:23,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:38:21" (1/1) ... [2022-07-22 23:38:23,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:38:21" (1/1) ... [2022-07-22 23:38:23,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:38:21" (1/1) ... [2022-07-22 23:38:23,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:38:21" (1/1) ... [2022-07-22 23:38:24,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:38:21" (1/1) ... [2022-07-22 23:38:24,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:38:21" (1/1) ... [2022-07-22 23:38:25,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:38:21" (1/1) ... [2022-07-22 23:38:25,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:38:25,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:38:25,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:38:25,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:38:25,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:38:21" (1/1) ... [2022-07-22 23:38:25,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:38:25,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:38:25,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 23:38:25,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 23:38:25,704 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-07-22 23:38:25,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-07-22 23:38:25,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-07-22 23:38:25,704 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-07-22 23:38:25,705 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-07-22 23:38:25,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-22 23:38:25,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 23:38:25,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-22 23:38:25,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-22 23:38:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-07-22 23:38:25,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-07-22 23:38:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_rel [2022-07-22 23:38:25,706 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_rel [2022-07-22 23:38:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_26 [2022-07-22 23:38:25,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_26 [2022-07-22 23:38:25,706 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-22 23:38:25,707 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-22 23:38:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2022-07-22 23:38:25,707 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2022-07-22 23:38:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:38:25,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:38:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-07-22 23:38:25,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-07-22 23:38:25,708 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2022-07-22 23:38:25,708 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2022-07-22 23:38:25,708 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2022-07-22 23:38:25,708 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2022-07-22 23:38:25,708 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 23:38:25,708 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 23:38:25,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:38:25,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:38:25,709 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2022-07-22 23:38:25,709 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2022-07-22 23:38:25,709 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2022-07-22 23:38:25,709 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2022-07-22 23:38:25,709 INFO L130 BoogieDeclarations]: Found specification of procedure rc_g_keycode_from_table [2022-07-22 23:38:25,710 INFO L138 BoogieDeclarations]: Found implementation of procedure rc_g_keycode_from_table [2022-07-22 23:38:25,710 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 23:38:25,710 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 23:38:25,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-07-22 23:38:25,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-07-22 23:38:25,710 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-22 23:38:25,710 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-22 23:38:25,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:38:25,711 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-07-22 23:38:25,711 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-07-22 23:38:25,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_10 [2022-07-22 23:38:25,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_10 [2022-07-22 23:38:25,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:38:25,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2022-07-22 23:38:25,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2022-07-22 23:38:25,712 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2022-07-22 23:38:25,712 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2022-07-22 23:38:25,713 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-22 23:38:25,713 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-22 23:38:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2022-07-22 23:38:25,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2022-07-22 23:38:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:38:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:38:25,715 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2022-07-22 23:38:25,715 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2022-07-22 23:38:25,715 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-22 23:38:25,716 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-22 23:38:25,716 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-22 23:38:25,716 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-22 23:38:25,716 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-22 23:38:25,716 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-22 23:38:25,716 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-22 23:38:25,716 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-22 23:38:25,717 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2022-07-22 23:38:25,717 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2022-07-22 23:38:25,717 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback_intf1 [2022-07-22 23:38:25,717 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback_intf1 [2022-07-22 23:38:25,718 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback_intf0 [2022-07-22 23:38:25,718 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback_intf0 [2022-07-22 23:38:25,718 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-07-22 23:38:25,718 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-07-22 23:38:25,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-22 23:38:25,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-22 23:38:25,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-22 23:38:25,719 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-22 23:38:25,719 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-22 23:38:25,719 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2022-07-22 23:38:25,719 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2022-07-22 23:38:25,719 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-22 23:38:25,719 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-22 23:38:25,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-22 23:38:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2022-07-22 23:38:25,720 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2022-07-22 23:38:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-07-22 23:38:25,721 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-07-22 23:38:25,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:38:25,721 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-07-22 23:38:25,721 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-07-22 23:38:25,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_7 [2022-07-22 23:38:25,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_7 [2022-07-22 23:38:25,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-22 23:38:25,722 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-22 23:38:25,722 INFO L130 BoogieDeclarations]: Found specification of procedure lcd_write [2022-07-22 23:38:25,723 INFO L138 BoogieDeclarations]: Found implementation of procedure lcd_write [2022-07-22 23:38:25,723 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-22 23:38:25,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-22 23:38:25,723 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-22 23:38:25,723 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-22 23:38:25,724 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 23:38:25,724 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 23:38:25,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:38:25,724 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2022-07-22 23:38:25,724 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2022-07-22 23:38:25,724 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-07-22 23:38:25,724 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-07-22 23:38:25,724 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2022-07-22 23:38:25,725 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2022-07-22 23:38:25,725 INFO L130 BoogieDeclarations]: Found specification of procedure imon_incoming_packet [2022-07-22 23:38:25,725 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_incoming_packet [2022-07-22 23:38:25,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:38:25,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:38:25,726 INFO L130 BoogieDeclarations]: Found specification of procedure imon_remote_key_lookup [2022-07-22 23:38:25,727 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_remote_key_lookup [2022-07-22 23:38:25,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:38:25,729 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-07-22 23:38:25,729 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-07-22 23:38:25,729 INFO L130 BoogieDeclarations]: Found specification of procedure tv2int [2022-07-22 23:38:25,730 INFO L138 BoogieDeclarations]: Found implementation of procedure tv2int [2022-07-22 23:38:25,731 INFO L130 BoogieDeclarations]: Found specification of procedure stabilize [2022-07-22 23:38:25,731 INFO L138 BoogieDeclarations]: Found implementation of procedure stabilize [2022-07-22 23:38:25,731 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2022-07-22 23:38:25,731 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2022-07-22 23:38:25,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_6 [2022-07-22 23:38:25,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_6 [2022-07-22 23:38:25,737 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-22 23:38:25,737 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-22 23:38:25,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:38:25,737 INFO L130 BoogieDeclarations]: Found specification of procedure vfd_write [2022-07-22 23:38:25,737 INFO L138 BoogieDeclarations]: Found implementation of procedure vfd_write [2022-07-22 23:38:25,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-22 23:38:25,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-22 23:38:25,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:38:25,738 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2022-07-22 23:38:25,738 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2022-07-22 23:38:25,738 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-22 23:38:25,738 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-07-22 23:38:25,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-07-22 23:38:25,738 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2022-07-22 23:38:25,739 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2022-07-22 23:38:25,739 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 23:38:25,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 23:38:25,739 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2022-07-22 23:38:25,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2022-07-22 23:38:25,740 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2022-07-22 23:38:25,740 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2022-07-22 23:38:25,740 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2022-07-22 23:38:25,740 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2022-07-22 23:38:25,740 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2022-07-22 23:38:25,740 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2022-07-22 23:38:25,740 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2022-07-22 23:38:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2022-07-22 23:38:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-07-22 23:38:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-07-22 23:38:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:38:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-22 23:38:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-22 23:38:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:38:25,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:38:26,442 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:38:26,444 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:38:33,067 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-22 23:38:52,458 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-07-22 23:38:55,253 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:38:55,268 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:38:55,268 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 23:38:55,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:38:55 BoogieIcfgContainer [2022-07-22 23:38:55,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:38:55,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:38:55,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:38:55,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:38:55,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:38:19" (1/3) ... [2022-07-22 23:38:55,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786352e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:38:55, skipping insertion in model container [2022-07-22 23:38:55,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:38:21" (2/3) ... [2022-07-22 23:38:55,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786352e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:38:55, skipping insertion in model container [2022-07-22 23:38:55,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:38:55" (3/3) ... [2022-07-22 23:38:55,282 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2022-07-22 23:38:55,294 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:38:55,294 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:38:55,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:38:55,386 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@2aa1beff, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@382c33a2 [2022-07-22 23:38:55,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:38:55,396 INFO L276 IsEmpty]: Start isEmpty. Operand has 1557 states, 1165 states have (on average 1.4180257510729615) internal successors, (1652), 1196 states have internal predecessors, (1652), 319 states have call successors, (319), 73 states have call predecessors, (319), 71 states have return successors, (310), 305 states have call predecessors, (310), 310 states have call successors, (310) [2022-07-22 23:38:55,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 23:38:55,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:38:55,419 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:38:55,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:38:55,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:38:55,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1302166196, now seen corresponding path program 1 times [2022-07-22 23:38:55,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:38:55,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144750396] [2022-07-22 23:38:55,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:38:55,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:38:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:56,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:38:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:56,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:38:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:56,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:38:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:56,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:38:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:56,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:38:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:56,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:38:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:56,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:38:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:56,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:38:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:56,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:38:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:56,142 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-22 23:38:56,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:38:56,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144750396] [2022-07-22 23:38:56,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144750396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:38:56,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:38:56,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:38:56,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488861185] [2022-07-22 23:38:56,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:38:56,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:38:56,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:38:56,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:38:56,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:38:56,191 INFO L87 Difference]: Start difference. First operand has 1557 states, 1165 states have (on average 1.4180257510729615) internal successors, (1652), 1196 states have internal predecessors, (1652), 319 states have call successors, (319), 73 states have call predecessors, (319), 71 states have return successors, (310), 305 states have call predecessors, (310), 310 states have call successors, (310) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-22 23:38:58,484 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:00,512 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:01,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:07,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:09,923 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:11,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:14,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:39:14,759 INFO L93 Difference]: Finished difference Result 4719 states and 7110 transitions. [2022-07-22 23:39:14,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:39:14,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 74 [2022-07-22 23:39:14,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:39:14,800 INFO L225 Difference]: With dead ends: 4719 [2022-07-22 23:39:14,800 INFO L226 Difference]: Without dead ends: 3137 [2022-07-22 23:39:14,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:39:14,819 INFO L413 NwaCegarLoop]: 2459 mSDtfsCounter, 2439 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 738 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2681 SdHoareTripleChecker+Valid, 5316 SdHoareTripleChecker+Invalid, 2184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 738 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:39:14,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2681 Valid, 5316 Invalid, 2184 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [738 Valid, 1444 Invalid, 2 Unknown, 0 Unchecked, 18.2s Time] [2022-07-22 23:39:14,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3137 states. [2022-07-22 23:39:15,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3137 to 3013. [2022-07-22 23:39:15,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 2275 states have (on average 1.3806593406593406) internal successors, (3141), 2311 states have internal predecessors, (3141), 597 states have call successors, (597), 141 states have call predecessors, (597), 140 states have return successors, (592), 582 states have call predecessors, (592), 592 states have call successors, (592) [2022-07-22 23:39:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 4330 transitions. [2022-07-22 23:39:15,073 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 4330 transitions. Word has length 74 [2022-07-22 23:39:15,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:39:15,074 INFO L495 AbstractCegarLoop]: Abstraction has 3013 states and 4330 transitions. [2022-07-22 23:39:15,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-22 23:39:15,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 4330 transitions. [2022-07-22 23:39:15,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-22 23:39:15,079 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:39:15,080 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:39:15,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:39:15,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:39:15,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:39:15,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1094154582, now seen corresponding path program 1 times [2022-07-22 23:39:15,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:39:15,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555850713] [2022-07-22 23:39:15,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:39:15,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:39:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:15,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:39:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:15,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:39:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:15,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:39:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:15,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:39:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:15,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:39:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:15,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:39:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:15,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:39:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:15,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:39:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:39:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:15,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:39:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-22 23:39:15,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:39:15,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555850713] [2022-07-22 23:39:15,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555850713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:39:15,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:39:15,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:39:15,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285014496] [2022-07-22 23:39:15,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:39:15,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:39:15,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:39:15,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:39:15,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:39:15,489 INFO L87 Difference]: Start difference. First operand 3013 states and 4330 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-22 23:39:17,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:19,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:22,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:24,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:33,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:36,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:39:36,215 INFO L93 Difference]: Finished difference Result 9240 states and 13580 transitions. [2022-07-22 23:39:36,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:39:36,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 83 [2022-07-22 23:39:36,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:39:36,254 INFO L225 Difference]: With dead ends: 9240 [2022-07-22 23:39:36,255 INFO L226 Difference]: Without dead ends: 6250 [2022-07-22 23:39:36,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:39:36,271 INFO L413 NwaCegarLoop]: 2646 mSDtfsCounter, 2472 mSDsluCounter, 2929 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 717 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2705 SdHoareTripleChecker+Valid, 5575 SdHoareTripleChecker+Invalid, 2212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:39:36,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2705 Valid, 5575 Invalid, 2212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 1493 Invalid, 2 Unknown, 0 Unchecked, 20.3s Time] [2022-07-22 23:39:36,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6250 states. [2022-07-22 23:39:36,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6250 to 6044. [2022-07-22 23:39:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6044 states, 4565 states have (on average 1.378313253012048) internal successors, (6292), 4635 states have internal predecessors, (6292), 1186 states have call successors, (1186), 281 states have call predecessors, (1186), 292 states have return successors, (1283), 1169 states have call predecessors, (1283), 1181 states have call successors, (1283) [2022-07-22 23:39:36,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6044 states to 6044 states and 8761 transitions. [2022-07-22 23:39:36,498 INFO L78 Accepts]: Start accepts. Automaton has 6044 states and 8761 transitions. Word has length 83 [2022-07-22 23:39:36,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:39:36,501 INFO L495 AbstractCegarLoop]: Abstraction has 6044 states and 8761 transitions. [2022-07-22 23:39:36,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-22 23:39:36,501 INFO L276 IsEmpty]: Start isEmpty. Operand 6044 states and 8761 transitions. [2022-07-22 23:39:36,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-22 23:39:36,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:39:36,504 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:39:36,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:39:36,505 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:39:36,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:39:36,506 INFO L85 PathProgramCache]: Analyzing trace with hash 440359394, now seen corresponding path program 1 times [2022-07-22 23:39:36,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:39:36,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557524495] [2022-07-22 23:39:36,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:39:36,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:39:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:36,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:39:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:36,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:39:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:36,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:39:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:36,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:39:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:36,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:39:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:36,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:39:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:36,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:39:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:36,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:39:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:36,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:39:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:36,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:39:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-22 23:39:36,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:39:36,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557524495] [2022-07-22 23:39:36,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557524495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:39:36,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:39:36,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:39:36,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986159781] [2022-07-22 23:39:36,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:39:36,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:39:36,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:39:36,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:39:36,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:39:36,908 INFO L87 Difference]: Start difference. First operand 6044 states and 8761 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-22 23:39:38,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:40,255 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:42,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:44,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:48,302 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:50,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:54,583 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:55,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:58,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:00,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:01,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:40:01,738 INFO L93 Difference]: Finished difference Result 18473 states and 26981 transitions. [2022-07-22 23:40:01,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:40:01,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 84 [2022-07-22 23:40:01,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:40:01,825 INFO L225 Difference]: With dead ends: 18473 [2022-07-22 23:40:01,826 INFO L226 Difference]: Without dead ends: 12452 [2022-07-22 23:40:01,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:40:01,864 INFO L413 NwaCegarLoop]: 2916 mSDtfsCounter, 2418 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 642 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2663 SdHoareTripleChecker+Valid, 6005 SdHoareTripleChecker+Invalid, 2179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:40:01,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2663 Valid, 6005 Invalid, 2179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 1532 Invalid, 5 Unknown, 0 Unchecked, 24.5s Time] [2022-07-22 23:40:01,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12452 states. [2022-07-22 23:40:02,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12452 to 12051. [2022-07-22 23:40:02,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12051 states, 9108 states have (on average 1.3779095300834432) internal successors, (12550), 9244 states have internal predecessors, (12550), 2358 states have call successors, (2358), 561 states have call predecessors, (2358), 584 states have return successors, (2569), 2329 states have call predecessors, (2569), 2353 states have call successors, (2569) [2022-07-22 23:40:02,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12051 states to 12051 states and 17477 transitions. [2022-07-22 23:40:02,360 INFO L78 Accepts]: Start accepts. Automaton has 12051 states and 17477 transitions. Word has length 84 [2022-07-22 23:40:02,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:40:02,362 INFO L495 AbstractCegarLoop]: Abstraction has 12051 states and 17477 transitions. [2022-07-22 23:40:02,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-22 23:40:02,363 INFO L276 IsEmpty]: Start isEmpty. Operand 12051 states and 17477 transitions. [2022-07-22 23:40:02,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-22 23:40:02,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:40:02,367 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:40:02,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 23:40:02,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:40:02,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:40:02,368 INFO L85 PathProgramCache]: Analyzing trace with hash 765657261, now seen corresponding path program 1 times [2022-07-22 23:40:02,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:40:02,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358418283] [2022-07-22 23:40:02,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:40:02,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:40:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:02,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:40:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:02,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:40:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:02,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:40:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:02,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:40:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:02,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:40:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:02,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:40:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:02,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:40:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:02,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:40:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:02,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:40:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:02,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:40:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-22 23:40:02,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:40:02,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358418283] [2022-07-22 23:40:02,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358418283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:40:02,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:40:02,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:40:02,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134930743] [2022-07-22 23:40:02,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:40:02,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:40:02,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:40:02,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:40:02,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:40:02,651 INFO L87 Difference]: Start difference. First operand 12051 states and 17477 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-22 23:40:05,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:08,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:10,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:16,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:19,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:21,273 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:22,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:40:22,609 INFO L93 Difference]: Finished difference Result 12450 states and 18232 transitions. [2022-07-22 23:40:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:40:22,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 85 [2022-07-22 23:40:22,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:40:22,680 INFO L225 Difference]: With dead ends: 12450 [2022-07-22 23:40:22,680 INFO L226 Difference]: Without dead ends: 12447 [2022-07-22 23:40:22,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:40:22,693 INFO L413 NwaCegarLoop]: 2916 mSDtfsCounter, 2413 mSDsluCounter, 3082 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 640 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2660 SdHoareTripleChecker+Valid, 5998 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:40:22,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2660 Valid, 5998 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 1527 Invalid, 4 Unknown, 0 Unchecked, 19.7s Time] [2022-07-22 23:40:22,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12447 states. [2022-07-22 23:40:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12447 to 12052. [2022-07-22 23:40:23,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12052 states, 9109 states have (on average 1.3778680425952354) internal successors, (12551), 9245 states have internal predecessors, (12551), 2358 states have call successors, (2358), 561 states have call predecessors, (2358), 584 states have return successors, (2569), 2329 states have call predecessors, (2569), 2353 states have call successors, (2569) [2022-07-22 23:40:23,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12052 states to 12052 states and 17478 transitions. [2022-07-22 23:40:23,267 INFO L78 Accepts]: Start accepts. Automaton has 12052 states and 17478 transitions. Word has length 85 [2022-07-22 23:40:23,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:40:23,268 INFO L495 AbstractCegarLoop]: Abstraction has 12052 states and 17478 transitions. [2022-07-22 23:40:23,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-22 23:40:23,268 INFO L276 IsEmpty]: Start isEmpty. Operand 12052 states and 17478 transitions. [2022-07-22 23:40:23,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-22 23:40:23,273 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:40:23,274 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:40:23,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:40:23,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:40:23,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:40:23,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2035005883, now seen corresponding path program 1 times [2022-07-22 23:40:23,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:40:23,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31411315] [2022-07-22 23:40:23,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:40:23,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:40:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:23,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:40:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:23,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:40:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:23,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:40:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:23,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:40:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:23,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:40:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:23,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:40:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:23,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:40:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:23,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:40:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:23,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:40:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:23,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:40:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-22 23:40:23,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:40:23,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31411315] [2022-07-22 23:40:23,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31411315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:40:23,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:40:23,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:40:23,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227922005] [2022-07-22 23:40:23,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:40:23,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:40:23,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:40:23,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:40:23,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:40:23,598 INFO L87 Difference]: Start difference. First operand 12052 states and 17478 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-22 23:40:26,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:29,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:31,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:36,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:37,939 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:40,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:40:41,354 INFO L93 Difference]: Finished difference Result 12446 states and 18228 transitions. [2022-07-22 23:40:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:40:41,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 86 [2022-07-22 23:40:41,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:40:41,417 INFO L225 Difference]: With dead ends: 12446 [2022-07-22 23:40:41,417 INFO L226 Difference]: Without dead ends: 12443 [2022-07-22 23:40:41,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:40:41,430 INFO L413 NwaCegarLoop]: 2161 mSDtfsCounter, 2214 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 408 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2450 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:40:41,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2450 Valid, 3224 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 676 Invalid, 5 Unknown, 0 Unchecked, 17.6s Time] [2022-07-22 23:40:41,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12443 states. [2022-07-22 23:40:41,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12443 to 12051. [2022-07-22 23:40:41,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12051 states, 9109 states have (on average 1.3777582610604897) internal successors, (12550), 9244 states have internal predecessors, (12550), 2357 states have call successors, (2357), 561 states have call predecessors, (2357), 584 states have return successors, (2569), 2329 states have call predecessors, (2569), 2353 states have call successors, (2569) [2022-07-22 23:40:41,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12051 states to 12051 states and 17476 transitions. [2022-07-22 23:40:41,832 INFO L78 Accepts]: Start accepts. Automaton has 12051 states and 17476 transitions. Word has length 86 [2022-07-22 23:40:41,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:40:41,833 INFO L495 AbstractCegarLoop]: Abstraction has 12051 states and 17476 transitions. [2022-07-22 23:40:41,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-22 23:40:41,834 INFO L276 IsEmpty]: Start isEmpty. Operand 12051 states and 17476 transitions. [2022-07-22 23:40:41,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-22 23:40:41,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:40:41,838 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:40:41,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:40:41,838 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:40:41,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:40:41,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1338754736, now seen corresponding path program 1 times [2022-07-22 23:40:41,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:40:41,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322695085] [2022-07-22 23:40:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:40:41,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:40:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:42,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:40:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:42,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:40:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:42,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:40:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:42,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:40:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:42,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:40:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:42,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:40:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:42,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:40:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:42,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:40:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:42,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:40:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:42,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:40:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:42,087 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-22 23:40:42,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:40:42,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322695085] [2022-07-22 23:40:42,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322695085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:40:42,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:40:42,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:40:42,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156918654] [2022-07-22 23:40:42,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:40:42,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:40:42,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:40:42,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:40:42,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:40:42,090 INFO L87 Difference]: Start difference. First operand 12051 states and 17476 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-22 23:40:44,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:45,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:47,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:52,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:54,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:56,883 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:58,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:59,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:40:59,348 INFO L93 Difference]: Finished difference Result 12445 states and 18226 transitions. [2022-07-22 23:40:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:40:59,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 87 [2022-07-22 23:40:59,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:40:59,404 INFO L225 Difference]: With dead ends: 12445 [2022-07-22 23:40:59,404 INFO L226 Difference]: Without dead ends: 12433 [2022-07-22 23:40:59,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:40:59,418 INFO L413 NwaCegarLoop]: 2160 mSDtfsCounter, 2212 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 407 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2447 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:40:59,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2447 Valid, 3224 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 674 Invalid, 5 Unknown, 0 Unchecked, 17.1s Time] [2022-07-22 23:40:59,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12433 states. [2022-07-22 23:41:00,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12433 to 12041. [2022-07-22 23:41:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12041 states, 9100 states have (on average 1.3776923076923078) internal successors, (12537), 9234 states have internal predecessors, (12537), 2356 states have call successors, (2356), 561 states have call predecessors, (2356), 584 states have return successors, (2569), 2329 states have call predecessors, (2569), 2353 states have call successors, (2569) [2022-07-22 23:41:00,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12041 states to 12041 states and 17462 transitions. [2022-07-22 23:41:00,116 INFO L78 Accepts]: Start accepts. Automaton has 12041 states and 17462 transitions. Word has length 87 [2022-07-22 23:41:00,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:41:00,116 INFO L495 AbstractCegarLoop]: Abstraction has 12041 states and 17462 transitions. [2022-07-22 23:41:00,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-22 23:41:00,116 INFO L276 IsEmpty]: Start isEmpty. Operand 12041 states and 17462 transitions. [2022-07-22 23:41:00,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-22 23:41:00,124 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:41:00,124 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:41:00,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:41:00,125 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:41:00,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:41:00,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1696861401, now seen corresponding path program 1 times [2022-07-22 23:41:00,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:41:00,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877688075] [2022-07-22 23:41:00,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:41:00,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:41:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:41:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:41:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:41:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:41:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:41:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:41:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:41:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:41:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:41:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 23:41:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:41:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 23:41:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:41:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 23:41:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 23:41:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 23:41:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 23:41:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 23:41:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 23:41:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:00,546 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-07-22 23:41:00,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:41:00,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877688075] [2022-07-22 23:41:00,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877688075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:41:00,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:41:00,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:41:00,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693222536] [2022-07-22 23:41:00,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:41:00,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:41:00,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:41:00,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:41:00,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:41:00,548 INFO L87 Difference]: Start difference. First operand 12041 states and 17462 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-22 23:41:02,814 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:04,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:07,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:09,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:11,276 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:12,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:13,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:15,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:17,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:21,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:23,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:28,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:30,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:34,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:36,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:39,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:42,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:44,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:45,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:49,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:54,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:57,107 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:41:59,883 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:42:01,912 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:42:04,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:42:07,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:42:10,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:42:12,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:42:13,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:42:13,888 INFO L93 Difference]: Finished difference Result 33508 states and 48877 transitions. [2022-07-22 23:42:13,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 23:42:13,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 151 [2022-07-22 23:42:13,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:42:13,990 INFO L225 Difference]: With dead ends: 33508 [2022-07-22 23:42:13,991 INFO L226 Difference]: Without dead ends: 21490 [2022-07-22 23:42:14,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:42:14,054 INFO L413 NwaCegarLoop]: 2148 mSDtfsCounter, 3623 mSDsluCounter, 2377 mSDsCounter, 0 mSdLazyCounter, 4834 mSolverCounterSat, 1720 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3835 SdHoareTripleChecker+Valid, 4525 SdHoareTripleChecker+Invalid, 6572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1720 IncrementalHoareTripleChecker+Valid, 4834 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:42:14,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3835 Valid, 4525 Invalid, 6572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1720 Valid, 4834 Invalid, 18 Unknown, 0 Unchecked, 72.7s Time] [2022-07-22 23:42:14,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21490 states. [2022-07-22 23:42:14,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21490 to 20512. [2022-07-22 23:42:14,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20512 states, 15553 states have (on average 1.3858419597505305) internal successors, (21554), 15791 states have internal predecessors, (21554), 3913 states have call successors, (3913), 994 states have call predecessors, (3913), 1045 states have return successors, (4274), 3862 states have call predecessors, (4274), 3910 states have call successors, (4274) [2022-07-22 23:42:14,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20512 states to 20512 states and 29741 transitions. [2022-07-22 23:42:14,935 INFO L78 Accepts]: Start accepts. Automaton has 20512 states and 29741 transitions. Word has length 151 [2022-07-22 23:42:14,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:42:14,935 INFO L495 AbstractCegarLoop]: Abstraction has 20512 states and 29741 transitions. [2022-07-22 23:42:14,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-22 23:42:14,936 INFO L276 IsEmpty]: Start isEmpty. Operand 20512 states and 29741 transitions. [2022-07-22 23:42:14,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-22 23:42:14,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:42:14,949 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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] [2022-07-22 23:42:14,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:42:14,950 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:42:14,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:42:14,950 INFO L85 PathProgramCache]: Analyzing trace with hash -613904597, now seen corresponding path program 1 times [2022-07-22 23:42:14,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:42:14,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824779638] [2022-07-22 23:42:14,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:42:14,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:42:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:42:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:42:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:42:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:42:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:42:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:42:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:42:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:42:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:42:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:42:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 23:42:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:42:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 23:42:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:42:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 23:42:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 23:42:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 23:42:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 23:42:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 23:42:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 23:42:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:42:15,250 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-07-22 23:42:15,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:42:15,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824779638] [2022-07-22 23:42:15,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824779638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:42:15,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:42:15,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:42:15,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400192423] [2022-07-22 23:42:15,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:42:15,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:42:15,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:42:15,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:42:15,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:42:15,253 INFO L87 Difference]: Start difference. First operand 20512 states and 29741 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:42:18,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:42:20,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:42:21,761 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:42:25,506 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []