./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_sdio.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_sdio.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 4e928bce7a5eba940349fe986fce1ee6d952316584823caa32f480aa4c9f0c38 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 12:39:09,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:39:09,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:39:09,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:39:09,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:39:09,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:39:09,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:39:09,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:39:09,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:39:09,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:39:09,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:39:09,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:39:09,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:39:09,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:39:09,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:39:09,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:39:09,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:39:09,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:39:09,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:39:09,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:39:09,166 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:39:09,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:39:09,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:39:09,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:39:09,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:39:09,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:39:09,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:39:09,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:39:09,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:39:09,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:39:09,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:39:09,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:39:09,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:39:09,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:39:09,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:39:09,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:39:09,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:39:09,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:39:09,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:39:09,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:39:09,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:39:09,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:39:09,180 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:39:09,201 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:39:09,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:39:09,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:39:09,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:39:09,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:39:09,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:39:09,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:39:09,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:39:09,204 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:39:09,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:39:09,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:39:09,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:39:09,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:39:09,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:39:09,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:39:09,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:39:09,205 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:39:09,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:39:09,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:39:09,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:39:09,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:39:09,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:39:09,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:39:09,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:39:09,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:39:09,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:39:09,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:39:09,207 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:39:09,207 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:39:09,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:39:09,207 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e928bce7a5eba940349fe986fce1ee6d952316584823caa32f480aa4c9f0c38 [2022-07-12 12:39:09,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:39:09,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:39:09,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:39:09,411 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:39:09,412 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:39:09,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_sdio.ko-entry_point.cil.out.i [2022-07-12 12:39:09,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a33b38604/411f5099e9fb4200960d165db913bd06/FLAG96a13df77 [2022-07-12 12:39:10,076 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:39:10,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_sdio.ko-entry_point.cil.out.i [2022-07-12 12:39:10,113 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a33b38604/411f5099e9fb4200960d165db913bd06/FLAG96a13df77 [2022-07-12 12:39:10,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a33b38604/411f5099e9fb4200960d165db913bd06 [2022-07-12 12:39:10,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:39:10,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:39:10,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:39:10,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:39:10,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:39:10,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:39:10" (1/1) ... [2022-07-12 12:39:10,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9b9c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:39:10, skipping insertion in model container [2022-07-12 12:39:10,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:39:10" (1/1) ... [2022-07-12 12:39:10,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:39:10,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:39:11,262 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_sdio.ko-entry_point.cil.out.i[209352,209365] [2022-07-12 12:39:11,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:39:11,882 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:39:12,011 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_sdio.ko-entry_point.cil.out.i[209352,209365] [2022-07-12 12:39:12,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:39:12,248 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:39:12,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:39:12 WrapperNode [2022-07-12 12:39:12,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:39:12,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:39:12,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:39:12,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:39:12,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:39:12" (1/1) ... [2022-07-12 12:39:12,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:39:12" (1/1) ... [2022-07-12 12:39:12,436 INFO L137 Inliner]: procedures = 188, calls = 2240, calls flagged for inlining = 91, calls inlined = 86, statements flattened = 4997 [2022-07-12 12:39:12,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:39:12,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:39:12,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:39:12,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:39:12,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:39:12" (1/1) ... [2022-07-12 12:39:12,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:39:12" (1/1) ... [2022-07-12 12:39:12,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:39:12" (1/1) ... [2022-07-12 12:39:12,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:39:12" (1/1) ... [2022-07-12 12:39:12,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:39:12" (1/1) ... [2022-07-12 12:39:12,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:39:12" (1/1) ... [2022-07-12 12:39:12,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:39:12" (1/1) ... [2022-07-12 12:39:12,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:39:12,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:39:12,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:39:12,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:39:12,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:39:12" (1/1) ... [2022-07-12 12:39:12,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:39:12,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:39:12,687 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) [2022-07-12 12:39:12,705 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 [2022-07-12 12:39:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-12 12:39:12,716 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-12 12:39:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2022-07-12 12:39:12,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2022-07-12 12:39:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-12 12:39:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_release_host [2022-07-12 12:39:12,717 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_release_host [2022-07-12 12:39:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_data_to_card [2022-07-12 12:39:12,717 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_data_to_card [2022-07-12 12:39:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 12:39:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 12:39:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-12 12:39:12,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-12 12:39:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 12:39:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_get_host_pm_caps [2022-07-12 12:39:12,718 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_get_host_pm_caps [2022-07-12 12:39:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_data_sync [2022-07-12 12:39:12,718 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_data_sync [2022-07-12 12:39:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 12:39:12,718 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 12:39:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_sdio_card_to_host [2022-07-12 12:39:12,719 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_sdio_card_to_host [2022-07-12 12:39:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure mp_tx_aggr_port_limit_reached [2022-07-12 12:39:12,719 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_tx_aggr_port_limit_reached [2022-07-12 12:39:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:39:12,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:39:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-07-12 12:39:12,719 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-07-12 12:39:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_get_priv [2022-07-12 12:39:12,720 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_get_priv [2022-07-12 12:39:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-12 12:39:12,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-12 12:39:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 12:39:12,720 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 12:39:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2022-07-12 12:39:12,720 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2022-07-12 12:39:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_read_reg [2022-07-12 12:39:12,720 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_read_reg [2022-07-12 12:39:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 12:39:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_reg [2022-07-12 12:39:12,721 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_reg [2022-07-12 12:39:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:39:12,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:39:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_read_data_sync [2022-07-12 12:39:12,722 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_read_data_sync [2022-07-12 12:39:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 12:39:12,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 12:39:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2022-07-12 12:39:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 12:39:12,722 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 12:39:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:39:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-12 12:39:12,723 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-12 12:39:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-07-12 12:39:12,723 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-07-12 12:39:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:39:12,724 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_release_irq [2022-07-12 12:39:12,724 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_release_irq [2022-07-12 12:39:12,724 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_disable_func [2022-07-12 12:39:12,724 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_disable_func [2022-07-12 12:39:12,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:39:12,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:39:12,725 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_claim_host [2022-07-12 12:39:12,725 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_claim_host [2022-07-12 12:39:12,725 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_reg_locked [2022-07-12 12:39:12,725 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_reg_locked [2022-07-12 12:39:12,725 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_sdio_cmdrsp_complete [2022-07-12 12:39:12,725 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_sdio_cmdrsp_complete [2022-07-12 12:39:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:39:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-07-12 12:39:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-12 12:39:12,726 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-12 12:39:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:39:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-07-12 12:39:12,726 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-07-12 12:39:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:39:12,727 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-12 12:39:12,727 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-12 12:39:12,727 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-12 12:39:12,727 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-12 12:39:12,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-07-12 12:39:12,727 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-07-12 12:39:12,727 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-12 12:39:12,727 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-12 12:39:12,728 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-07-12 12:39:12,728 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-07-12 12:39:12,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 12:39:12,728 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_host_to_card_mp_aggr [2022-07-12 12:39:12,728 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_host_to_card_mp_aggr [2022-07-12 12:39:12,728 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_sdio_resume [2022-07-12 12:39:12,728 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_sdio_resume [2022-07-12 12:39:12,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-12 12:39:12,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2022-07-12 12:39:12,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-12 12:39:12,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-12 12:39:12,729 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_decode_rx_packet [2022-07-12 12:39:12,729 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_decode_rx_packet [2022-07-12 12:39:12,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:39:12,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:39:13,236 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:39:13,239 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:39:13,354 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-12 12:39:19,241 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:39:19,258 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:39:19,258 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 12:39:19,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:39:19 BoogieIcfgContainer [2022-07-12 12:39:19,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:39:19,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:39:19,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:39:19,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:39:19,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:39:10" (1/3) ... [2022-07-12 12:39:19,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58667123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:39:19, skipping insertion in model container [2022-07-12 12:39:19,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:39:12" (2/3) ... [2022-07-12 12:39:19,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58667123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:39:19, skipping insertion in model container [2022-07-12 12:39:19,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:39:19" (3/3) ... [2022-07-12 12:39:19,269 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_sdio.ko-entry_point.cil.out.i [2022-07-12 12:39:19,278 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:39:19,279 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:39:19,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:39:19,351 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@15b6afd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@a6b2c75 [2022-07-12 12:39:19,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:39:19,362 INFO L276 IsEmpty]: Start isEmpty. Operand has 1121 states, 888 states have (on average 1.4617117117117118) internal successors, (1298), 901 states have internal predecessors, (1298), 192 states have call successors, (192), 40 states have call predecessors, (192), 39 states have return successors, (186), 185 states have call predecessors, (186), 186 states have call successors, (186) [2022-07-12 12:39:19,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-12 12:39:19,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:39:19,385 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:39:19,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:39:19,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:39:19,393 INFO L85 PathProgramCache]: Analyzing trace with hash -67190774, now seen corresponding path program 1 times [2022-07-12 12:39:19,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:39:19,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800909134] [2022-07-12 12:39:19,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:39:19,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:39:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:19,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:39:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:19,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:39:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:19,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:39:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:19,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:39:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 12:39:19,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:39:19,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800909134] [2022-07-12 12:39:19,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800909134] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:39:19,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:39:19,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:39:19,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230084247] [2022-07-12 12:39:19,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:39:19,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:39:19,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:39:19,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:39:19,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:39:19,951 INFO L87 Difference]: Start difference. First operand has 1121 states, 888 states have (on average 1.4617117117117118) internal successors, (1298), 901 states have internal predecessors, (1298), 192 states have call successors, (192), 40 states have call predecessors, (192), 39 states have return successors, (186), 185 states have call predecessors, (186), 186 states have call successors, (186) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 12:39:22,077 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 [] [2022-07-12 12:39:25,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:39:25,984 INFO L93 Difference]: Finished difference Result 3392 states and 5178 transitions. [2022-07-12 12:39:25,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:39:25,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2022-07-12 12:39:25,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:39:26,003 INFO L225 Difference]: With dead ends: 3392 [2022-07-12 12:39:26,003 INFO L226 Difference]: Without dead ends: 2256 [2022-07-12 12:39:26,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:39:26,015 INFO L413 NwaCegarLoop]: 1913 mSDtfsCounter, 1828 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 421 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1948 SdHoareTripleChecker+Valid, 4236 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-12 12:39:26,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1948 Valid, 4236 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 978 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-07-12 12:39:26,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2022-07-12 12:39:26,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2174. [2022-07-12 12:39:26,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2174 states, 1734 states have (on average 1.4452133794694348) internal successors, (2506), 1744 states have internal predecessors, (2506), 363 states have call successors, (363), 77 states have call predecessors, (363), 76 states have return successors, (362), 360 states have call predecessors, (362), 362 states have call successors, (362) [2022-07-12 12:39:26,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 3231 transitions. [2022-07-12 12:39:26,119 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 3231 transitions. Word has length 46 [2022-07-12 12:39:26,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:39:26,120 INFO L495 AbstractCegarLoop]: Abstraction has 2174 states and 3231 transitions. [2022-07-12 12:39:26,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 12:39:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 3231 transitions. [2022-07-12 12:39:26,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-12 12:39:26,122 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:39:26,122 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:39:26,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 12:39:26,123 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:39:26,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:39:26,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1446790162, now seen corresponding path program 1 times [2022-07-12 12:39:26,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:39:26,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727441582] [2022-07-12 12:39:26,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:39:26,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:39:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:26,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:39:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:26,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:39:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:26,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:39:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:26,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:39:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:26,346 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 12:39:26,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:39:26,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727441582] [2022-07-12 12:39:26,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727441582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:39:26,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:39:26,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:39:26,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024624655] [2022-07-12 12:39:26,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:39:26,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:39:26,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:39:26,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:39:26,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:39:26,349 INFO L87 Difference]: Start difference. First operand 2174 states and 3231 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 12:39:28,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:39:32,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:39:34,286 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:39:37,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:39:38,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:39:38,775 INFO L93 Difference]: Finished difference Result 6659 states and 9955 transitions. [2022-07-12 12:39:38,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:39:38,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2022-07-12 12:39:38,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:39:38,796 INFO L225 Difference]: With dead ends: 6659 [2022-07-12 12:39:38,797 INFO L226 Difference]: Without dead ends: 4487 [2022-07-12 12:39:38,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:39:38,804 INFO L413 NwaCegarLoop]: 1987 mSDtfsCounter, 1885 mSDsluCounter, 5594 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 400 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2009 SdHoareTripleChecker+Valid, 7581 SdHoareTripleChecker+Invalid, 2275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:39:38,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2009 Valid, 7581 Invalid, 2275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 1871 Invalid, 4 Unknown, 0 Unchecked, 12.2s Time] [2022-07-12 12:39:38,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2022-07-12 12:39:38,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 4353. [2022-07-12 12:39:38,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 3473 states have (on average 1.4454362222862078) internal successors, (5020), 3495 states have internal predecessors, (5020), 721 states have call successors, (721), 153 states have call predecessors, (721), 158 states have return successors, (738), 720 states have call predecessors, (738), 720 states have call successors, (738) [2022-07-12 12:39:38,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 6479 transitions. [2022-07-12 12:39:38,941 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 6479 transitions. Word has length 46 [2022-07-12 12:39:38,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:39:38,942 INFO L495 AbstractCegarLoop]: Abstraction has 4353 states and 6479 transitions. [2022-07-12 12:39:38,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 12:39:38,942 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 6479 transitions. [2022-07-12 12:39:38,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-12 12:39:38,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:39:38,954 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:39:38,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 12:39:38,955 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:39:38,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:39:38,955 INFO L85 PathProgramCache]: Analyzing trace with hash -668278364, now seen corresponding path program 1 times [2022-07-12 12:39:38,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:39:38,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396228638] [2022-07-12 12:39:38,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:39:38,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:39:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:39,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:39:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:39,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:39:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:39,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:39:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:39,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:39:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:39,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 12:39:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:39,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 12:39:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:39,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 12:39:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:39,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 12:39:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:39,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:39:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:39,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:39:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 12:39:39,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:39:39,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396228638] [2022-07-12 12:39:39,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396228638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:39:39,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:39:39,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:39:39,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763221345] [2022-07-12 12:39:39,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:39:39,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:39:39,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:39:39,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:39:39,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:39:39,233 INFO L87 Difference]: Start difference. First operand 4353 states and 6479 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 12:39:41,330 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:39:43,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:39:48,946 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:39:50,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:39:51,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:39:51,845 INFO L93 Difference]: Finished difference Result 7320 states and 10837 transitions. [2022-07-12 12:39:51,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:39:51,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 105 [2022-07-12 12:39:51,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:39:51,856 INFO L225 Difference]: With dead ends: 7320 [2022-07-12 12:39:51,856 INFO L226 Difference]: Without dead ends: 2979 [2022-07-12 12:39:51,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:39:51,865 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 556 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 233 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 4449 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:39:51,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 4449 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1566 Invalid, 4 Unknown, 0 Unchecked, 12.5s Time] [2022-07-12 12:39:51,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2022-07-12 12:39:51,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2864. [2022-07-12 12:39:51,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2297 states have (on average 1.434479756203744) internal successors, (3295), 2310 states have internal predecessors, (3295), 446 states have call successors, (446), 118 states have call predecessors, (446), 120 states have return successors, (456), 443 states have call predecessors, (456), 445 states have call successors, (456) [2022-07-12 12:39:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4197 transitions. [2022-07-12 12:39:51,930 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4197 transitions. Word has length 105 [2022-07-12 12:39:51,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:39:51,931 INFO L495 AbstractCegarLoop]: Abstraction has 2864 states and 4197 transitions. [2022-07-12 12:39:51,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 12:39:51,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4197 transitions. [2022-07-12 12:39:51,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 12:39:51,936 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:39:51,936 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:39:51,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 12:39:51,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:39:51,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:39:51,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1270465993, now seen corresponding path program 1 times [2022-07-12 12:39:51,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:39:51,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081818401] [2022-07-12 12:39:51,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:39:51,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:39:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:52,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:39:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:52,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:39:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:52,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:39:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:39:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:52,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 12:39:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:52,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 12:39:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:52,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 12:39:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:52,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 12:39:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:52,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 12:39:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:52,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 12:39:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:52,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:39:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:52,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 12:39:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:52,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:39:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:52,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:39:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-12 12:39:52,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:39:52,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081818401] [2022-07-12 12:39:52,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081818401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:39:52,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:39:52,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:39:52,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700938091] [2022-07-12 12:39:52,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:39:52,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:39:52,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:39:52,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:39:52,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:39:52,287 INFO L87 Difference]: Start difference. First operand 2864 states and 4197 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 12:39:54,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:39:59,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:39:59,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:39:59,693 INFO L93 Difference]: Finished difference Result 5606 states and 8247 transitions. [2022-07-12 12:39:59,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:39:59,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 146 [2022-07-12 12:39:59,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:39:59,704 INFO L225 Difference]: With dead ends: 5606 [2022-07-12 12:39:59,704 INFO L226 Difference]: Without dead ends: 2964 [2022-07-12 12:39:59,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:39:59,710 INFO L413 NwaCegarLoop]: 1586 mSDtfsCounter, 356 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 382 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 3746 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:39:59,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 3746 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 860 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2022-07-12 12:39:59,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2022-07-12 12:39:59,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2866. [2022-07-12 12:39:59,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2299 states have (on average 1.4341017833840801) internal successors, (3297), 2312 states have internal predecessors, (3297), 446 states have call successors, (446), 118 states have call predecessors, (446), 120 states have return successors, (456), 443 states have call predecessors, (456), 445 states have call successors, (456) [2022-07-12 12:39:59,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 4199 transitions. [2022-07-12 12:39:59,768 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 4199 transitions. Word has length 146 [2022-07-12 12:39:59,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:39:59,769 INFO L495 AbstractCegarLoop]: Abstraction has 2866 states and 4199 transitions. [2022-07-12 12:39:59,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 12:39:59,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 4199 transitions. [2022-07-12 12:39:59,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 12:39:59,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:39:59,774 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:39:59,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 12:39:59,774 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:39:59,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:39:59,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1096228601, now seen corresponding path program 1 times [2022-07-12 12:39:59,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:39:59,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580806082] [2022-07-12 12:39:59,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:39:59,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:39:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:59,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:39:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:59,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:39:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:59,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:39:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:59,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:39:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:59,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 12:39:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:39:59,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 12:39:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:00,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 12:40:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:00,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 12:40:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:00,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 12:40:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:00,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 12:40:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:00,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:40:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:00,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 12:40:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:00,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:40:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:00,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:40:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-12 12:40:00,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:40:00,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580806082] [2022-07-12 12:40:00,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580806082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:40:00,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:40:00,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:40:00,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248337044] [2022-07-12 12:40:00,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:40:00,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:40:00,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:40:00,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:40:00,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:40:00,159 INFO L87 Difference]: Start difference. First operand 2866 states and 4199 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 12:40:02,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:40:06,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:40:07,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:40:07,228 INFO L93 Difference]: Finished difference Result 5600 states and 8246 transitions. [2022-07-12 12:40:07,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:40:07,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 146 [2022-07-12 12:40:07,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:40:07,239 INFO L225 Difference]: With dead ends: 5600 [2022-07-12 12:40:07,239 INFO L226 Difference]: Without dead ends: 2956 [2022-07-12 12:40:07,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-12 12:40:07,245 INFO L413 NwaCegarLoop]: 1588 mSDtfsCounter, 339 mSDsluCounter, 4807 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 384 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 6395 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:40:07,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 6395 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 1502 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-07-12 12:40:07,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2022-07-12 12:40:07,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2866. [2022-07-12 12:40:07,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2297 states have (on average 1.432738354375272) internal successors, (3291), 2311 states have internal predecessors, (3291), 446 states have call successors, (446), 118 states have call predecessors, (446), 122 states have return successors, (462), 444 states have call predecessors, (462), 445 states have call successors, (462) [2022-07-12 12:40:07,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 4199 transitions. [2022-07-12 12:40:07,307 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 4199 transitions. Word has length 146 [2022-07-12 12:40:07,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:40:07,307 INFO L495 AbstractCegarLoop]: Abstraction has 2866 states and 4199 transitions. [2022-07-12 12:40:07,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 12:40:07,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 4199 transitions. [2022-07-12 12:40:07,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-12 12:40:07,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:40:07,312 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:40:07,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 12:40:07,313 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:40:07,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:40:07,313 INFO L85 PathProgramCache]: Analyzing trace with hash -433239453, now seen corresponding path program 1 times [2022-07-12 12:40:07,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:40:07,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297771538] [2022-07-12 12:40:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:40:07,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:40:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:07,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:40:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:07,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:40:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:07,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:40:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:07,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:40:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:07,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 12:40:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:07,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 12:40:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:07,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 12:40:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:07,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 12:40:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:07,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 12:40:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:07,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 12:40:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:40:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:07,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 12:40:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:07,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:40:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:07,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:40:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:07,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:40:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-12 12:40:07,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:40:07,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297771538] [2022-07-12 12:40:07,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297771538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:40:07,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:40:07,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:40:07,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380469167] [2022-07-12 12:40:07,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:40:07,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:40:07,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:40:07,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:40:07,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:40:07,677 INFO L87 Difference]: Start difference. First operand 2866 states and 4199 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 12:40:09,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:40:11,801 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:40:15,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:40:17,502 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:40:22,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:40:24,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:40:27,215 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 [] [2022-07-12 12:40:28,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:40:28,095 INFO L93 Difference]: Finished difference Result 6857 states and 10248 transitions. [2022-07-12 12:40:28,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:40:28,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 153 [2022-07-12 12:40:28,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:40:28,110 INFO L225 Difference]: With dead ends: 6857 [2022-07-12 12:40:28,111 INFO L226 Difference]: Without dead ends: 4213 [2022-07-12 12:40:28,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:40:28,117 INFO L413 NwaCegarLoop]: 2218 mSDtfsCounter, 742 mSDsluCounter, 3693 mSDsCounter, 0 mSdLazyCounter, 1811 mSolverCounterSat, 208 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 5911 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1811 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:40:28,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 5911 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1811 Invalid, 6 Unknown, 0 Unchecked, 20.3s Time] [2022-07-12 12:40:28,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2022-07-12 12:40:28,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 2882. [2022-07-12 12:40:28,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2311 states have (on average 1.4309822587624406) internal successors, (3307), 2325 states have internal predecessors, (3307), 448 states have call successors, (448), 118 states have call predecessors, (448), 122 states have return successors, (464), 446 states have call predecessors, (464), 447 states have call successors, (464) [2022-07-12 12:40:28,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 4219 transitions. [2022-07-12 12:40:28,198 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 4219 transitions. Word has length 153 [2022-07-12 12:40:28,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:40:28,198 INFO L495 AbstractCegarLoop]: Abstraction has 2882 states and 4219 transitions. [2022-07-12 12:40:28,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 12:40:28,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 4219 transitions. [2022-07-12 12:40:28,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-12 12:40:28,232 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:40:28,233 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:40:28,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 12:40:28,233 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:40:28,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:40:28,234 INFO L85 PathProgramCache]: Analyzing trace with hash 353482513, now seen corresponding path program 1 times [2022-07-12 12:40:28,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:40:28,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863402106] [2022-07-12 12:40:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:40:28,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:40:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:28,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:40:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:28,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:40:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:28,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:40:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:28,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:40:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:28,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 12:40:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:28,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 12:40:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:28,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 12:40:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:28,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 12:40:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:28,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 12:40:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:28,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 12:40:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:28,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:40:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:28,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 12:40:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:28,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:40:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:28,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:40:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:28,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:40:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:28,527 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-12 12:40:28,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:40:28,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863402106] [2022-07-12 12:40:28,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863402106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:40:28,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:40:28,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:40:28,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097444236] [2022-07-12 12:40:28,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:40:28,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:40:28,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:40:28,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:40:28,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:40:28,530 INFO L87 Difference]: Start difference. First operand 2882 states and 4219 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 12:40:30,632 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 [] [2022-07-12 12:40:32,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:40:36,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:40:38,681 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:40:41,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:40:43,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:40:48,663 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:40:50,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:40:53,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:40:55,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:40:55,272 INFO L93 Difference]: Finished difference Result 8302 states and 12566 transitions. [2022-07-12 12:40:55,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:40:55,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 154 [2022-07-12 12:40:55,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:40:55,294 INFO L225 Difference]: With dead ends: 8302 [2022-07-12 12:40:55,294 INFO L226 Difference]: Without dead ends: 5642 [2022-07-12 12:40:55,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:40:55,301 INFO L413 NwaCegarLoop]: 2520 mSDtfsCounter, 1613 mSDsluCounter, 5896 mSDsCounter, 0 mSdLazyCounter, 2552 mSolverCounterSat, 213 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 8416 SdHoareTripleChecker+Invalid, 2774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 2552 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:40:55,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 8416 Invalid, 2774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 2552 Invalid, 9 Unknown, 0 Unchecked, 26.5s Time] [2022-07-12 12:40:55,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2022-07-12 12:40:55,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 2882. [2022-07-12 12:40:55,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2311 states have (on average 1.4309822587624406) internal successors, (3307), 2325 states have internal predecessors, (3307), 448 states have call successors, (448), 118 states have call predecessors, (448), 122 states have return successors, (464), 446 states have call predecessors, (464), 447 states have call successors, (464) [2022-07-12 12:40:55,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 4219 transitions. [2022-07-12 12:40:55,433 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 4219 transitions. Word has length 154 [2022-07-12 12:40:55,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:40:55,433 INFO L495 AbstractCegarLoop]: Abstraction has 2882 states and 4219 transitions. [2022-07-12 12:40:55,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 12:40:55,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 4219 transitions. [2022-07-12 12:40:55,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-12 12:40:55,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:40:55,440 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:40:55,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 12:40:55,440 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:40:55,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:40:55,441 INFO L85 PathProgramCache]: Analyzing trace with hash 343045352, now seen corresponding path program 1 times [2022-07-12 12:40:55,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:40:55,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453921028] [2022-07-12 12:40:55,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:40:55,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:40:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:55,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:40:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:55,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:40:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:55,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:40:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:55,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:40:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:55,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 12:40:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:55,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 12:40:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:55,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 12:40:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:55,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 12:40:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:55,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 12:40:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:55,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 12:40:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:55,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:40:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:55,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 12:40:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:55,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:40:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:55,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:40:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:55,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:40:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:40:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-12 12:40:55,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:40:55,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453921028] [2022-07-12 12:40:55,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453921028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:40:55,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:40:55,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:40:55,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473971789] [2022-07-12 12:40:55,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:40:55,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:40:55,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:40:55,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:40:55,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:40:55,773 INFO L87 Difference]: Start difference. First operand 2882 states and 4219 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 12:40:57,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:40:59,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:41:05,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:41:07,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:41:10,600 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:41:12,642 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:41:17,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:41:17,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:41:17,461 INFO L93 Difference]: Finished difference Result 6875 states and 10266 transitions. [2022-07-12 12:41:17,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:41:17,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 155 [2022-07-12 12:41:17,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:41:17,484 INFO L225 Difference]: With dead ends: 6875 [2022-07-12 12:41:17,484 INFO L226 Difference]: Without dead ends: 4215 [2022-07-12 12:41:17,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:41:17,488 INFO L413 NwaCegarLoop]: 2345 mSDtfsCounter, 1318 mSDsluCounter, 3851 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 302 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 6196 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:41:17,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 6196 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1898 Invalid, 6 Unknown, 0 Unchecked, 21.5s Time] [2022-07-12 12:41:17,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2022-07-12 12:41:17,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 2882. [2022-07-12 12:41:17,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2311 states have (on average 1.430116832540026) internal successors, (3305), 2325 states have internal predecessors, (3305), 448 states have call successors, (448), 118 states have call predecessors, (448), 122 states have return successors, (464), 446 states have call predecessors, (464), 447 states have call successors, (464) [2022-07-12 12:41:17,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 4217 transitions. [2022-07-12 12:41:17,602 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 4217 transitions. Word has length 155 [2022-07-12 12:41:17,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:41:17,603 INFO L495 AbstractCegarLoop]: Abstraction has 2882 states and 4217 transitions. [2022-07-12 12:41:17,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 12:41:17,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 4217 transitions. [2022-07-12 12:41:17,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-12 12:41:17,608 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:41:17,608 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:41:17,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 12:41:17,608 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:41:17,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:41:17,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1390479030, now seen corresponding path program 1 times [2022-07-12 12:41:17,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:41:17,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347742877] [2022-07-12 12:41:17,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:41:17,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:41:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:20,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:41:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:20,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:41:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:20,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:41:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:20,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:41:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:20,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 12:41:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:20,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 12:41:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:20,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 12:41:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:20,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 12:41:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:20,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 12:41:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:20,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 12:41:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:20,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:41:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:20,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 12:41:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:20,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:41:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:20,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:41:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:21,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:41:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:21,089 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-12 12:41:21,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:41:21,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347742877] [2022-07-12 12:41:21,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347742877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:41:21,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:41:21,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-12 12:41:21,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761800874] [2022-07-12 12:41:21,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:41:21,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 12:41:21,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:41:21,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 12:41:21,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2022-07-12 12:41:21,091 INFO L87 Difference]: Start difference. First operand 2882 states and 4217 transitions. Second operand has 17 states, 16 states have (on average 6.3125) internal successors, (101), 11 states have internal predecessors, (101), 3 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 12:41:23,375 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 [] [2022-07-12 12:41:30,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:41:33,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:41:36,500 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 [] [2022-07-12 12:41:37,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:41:37,206 INFO L93 Difference]: Finished difference Result 7143 states and 10715 transitions. [2022-07-12 12:41:37,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 12:41:37,207 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.3125) internal successors, (101), 11 states have internal predecessors, (101), 3 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) Word has length 156 [2022-07-12 12:41:37,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:41:37,218 INFO L225 Difference]: With dead ends: 7143 [2022-07-12 12:41:37,219 INFO L226 Difference]: Without dead ends: 4483 [2022-07-12 12:41:37,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2022-07-12 12:41:37,225 INFO L413 NwaCegarLoop]: 2528 mSDtfsCounter, 1089 mSDsluCounter, 29115 mSDsCounter, 0 mSdLazyCounter, 6004 mSolverCounterSat, 398 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 31643 SdHoareTripleChecker+Invalid, 6406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 6004 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:41:37,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 31643 Invalid, 6406 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [398 Valid, 6004 Invalid, 4 Unknown, 0 Unchecked, 15.7s Time] [2022-07-12 12:41:37,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4483 states. [2022-07-12 12:41:37,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4483 to 2889. [2022-07-12 12:41:37,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2889 states, 2317 states have (on average 1.428139835994821) internal successors, (3309), 2329 states have internal predecessors, (3309), 448 states have call successors, (448), 118 states have call predecessors, (448), 123 states have return successors, (466), 449 states have call predecessors, (466), 447 states have call successors, (466) [2022-07-12 12:41:37,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 4223 transitions. [2022-07-12 12:41:37,375 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 4223 transitions. Word has length 156 [2022-07-12 12:41:37,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:41:37,375 INFO L495 AbstractCegarLoop]: Abstraction has 2889 states and 4223 transitions. [2022-07-12 12:41:37,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.3125) internal successors, (101), 11 states have internal predecessors, (101), 3 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 12:41:37,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 4223 transitions. [2022-07-12 12:41:37,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-12 12:41:37,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:41:37,383 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:41:37,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 12:41:37,383 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:41:37,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:41:37,384 INFO L85 PathProgramCache]: Analyzing trace with hash 2040464555, now seen corresponding path program 1 times [2022-07-12 12:41:37,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:41:37,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170542491] [2022-07-12 12:41:37,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:41:37,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:41:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:41:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:41:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:41:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:41:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 12:41:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 12:41:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 12:41:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 12:41:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 12:41:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 12:41:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:41:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 12:41:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 12:41:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 12:41:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 12:41:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-12 12:41:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:41:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:41:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:41:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-07-12 12:41:37,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:41:37,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170542491] [2022-07-12 12:41:37,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170542491] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:41:37,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:41:37,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:41:37,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575905279] [2022-07-12 12:41:37,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:41:37,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:41:37,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:41:37,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:41:37,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:41:37,731 INFO L87 Difference]: Start difference. First operand 2889 states and 4223 transitions. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 12:41:39,807 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 [] [2022-07-12 12:41:44,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:41:47,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:41:48,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:41:48,077 INFO L93 Difference]: Finished difference Result 8363 states and 12653 transitions. [2022-07-12 12:41:48,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:41:48,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (20), 4 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 195 [2022-07-12 12:41:48,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:41:48,092 INFO L225 Difference]: With dead ends: 8363 [2022-07-12 12:41:48,092 INFO L226 Difference]: Without dead ends: 5696 [2022-07-12 12:41:48,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:41:48,121 INFO L413 NwaCegarLoop]: 2628 mSDtfsCounter, 2192 mSDsluCounter, 5102 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 600 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2325 SdHoareTripleChecker+Valid, 7730 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:41:48,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2325 Valid, 7730 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 1542 Invalid, 1 Unknown, 0 Unchecked, 10.0s Time] [2022-07-12 12:41:48,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2022-07-12 12:41:48,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 2893. [2022-07-12 12:41:48,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 2321 states have (on average 1.4274019819043515) internal successors, (3313), 2333 states have internal predecessors, (3313), 448 states have call successors, (448), 118 states have call predecessors, (448), 123 states have return successors, (466), 449 states have call predecessors, (466), 447 states have call successors, (466) [2022-07-12 12:41:48,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 4227 transitions. [2022-07-12 12:41:48,245 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 4227 transitions. Word has length 195 [2022-07-12 12:41:48,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:41:48,246 INFO L495 AbstractCegarLoop]: Abstraction has 2893 states and 4227 transitions. [2022-07-12 12:41:48,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 12:41:48,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 4227 transitions. [2022-07-12 12:41:48,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-12 12:41:48,252 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:41:48,252 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:41:48,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 12:41:48,253 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:41:48,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:41:48,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1987154174, now seen corresponding path program 1 times [2022-07-12 12:41:48,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:41:48,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537561218] [2022-07-12 12:41:48,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:41:48,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:41:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:41:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:41:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:41:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:41:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 12:41:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 12:41:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 12:41:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 12:41:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 12:41:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 12:41:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:41:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 12:41:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 12:41:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 12:41:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 12:41:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-12 12:41:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 12:41:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:41:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:41:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:41:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-12 12:41:48,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:41:48,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537561218] [2022-07-12 12:41:48,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537561218] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:41:48,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:41:48,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:41:48,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731905463] [2022-07-12 12:41:48,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:41:48,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:41:48,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:41:48,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:41:48,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:41:48,604 INFO L87 Difference]: Start difference. First operand 2893 states and 4227 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-12 12:41:50,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:41:56,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:41:58,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:41:58,422 INFO L93 Difference]: Finished difference Result 8323 states and 12578 transitions. [2022-07-12 12:41:58,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:41:58,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 205 [2022-07-12 12:41:58,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:41:58,434 INFO L225 Difference]: With dead ends: 8323 [2022-07-12 12:41:58,435 INFO L226 Difference]: Without dead ends: 5652 [2022-07-12 12:41:58,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:41:58,439 INFO L413 NwaCegarLoop]: 3157 mSDtfsCounter, 1784 mSDsluCounter, 3970 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 521 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 7127 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:41:58,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2048 Valid, 7127 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 1440 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2022-07-12 12:41:58,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2022-07-12 12:41:58,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 2893. [2022-07-12 12:41:58,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 2321 states have (on average 1.4274019819043515) internal successors, (3313), 2333 states have internal predecessors, (3313), 448 states have call successors, (448), 118 states have call predecessors, (448), 123 states have return successors, (466), 449 states have call predecessors, (466), 447 states have call successors, (466) [2022-07-12 12:41:58,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 4227 transitions. [2022-07-12 12:41:58,573 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 4227 transitions. Word has length 205 [2022-07-12 12:41:58,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:41:58,574 INFO L495 AbstractCegarLoop]: Abstraction has 2893 states and 4227 transitions. [2022-07-12 12:41:58,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 3 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-12 12:41:58,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 4227 transitions. [2022-07-12 12:41:58,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-12 12:41:58,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:41:58,580 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:41:58,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 12:41:58,580 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:41:58,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:41:58,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1630257905, now seen corresponding path program 1 times [2022-07-12 12:41:58,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:41:58,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453161925] [2022-07-12 12:41:58,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:41:58,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:41:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:41:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:41:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:41:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:41:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 12:41:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 12:41:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 12:41:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 12:41:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 12:41:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 12:41:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:41:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 12:41:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 12:41:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 12:41:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 12:41:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-12 12:41:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 12:41:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:41:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:41:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:41:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:41:58,900 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-12 12:41:58,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:41:58,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453161925] [2022-07-12 12:41:58,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453161925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:41:58,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:41:58,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:41:58,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041487182] [2022-07-12 12:41:58,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:41:58,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:41:58,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:41:58,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:41:58,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:41:58,902 INFO L87 Difference]: Start difference. First operand 2893 states and 4227 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 12:42:00,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:42:04,880 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:42:08,378 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 [] [2022-07-12 12:42:09,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:42:09,435 INFO L93 Difference]: Finished difference Result 6896 states and 10280 transitions. [2022-07-12 12:42:09,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:42:09,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 206 [2022-07-12 12:42:09,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:42:09,448 INFO L225 Difference]: With dead ends: 6896 [2022-07-12 12:42:09,448 INFO L226 Difference]: Without dead ends: 4225 [2022-07-12 12:42:09,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:42:09,456 INFO L413 NwaCegarLoop]: 2292 mSDtfsCounter, 909 mSDsluCounter, 4053 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 395 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 6345 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:42:09,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 6345 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1396 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2022-07-12 12:42:09,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4225 states. [2022-07-12 12:42:09,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4225 to 2893. [2022-07-12 12:42:09,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 2321 states have (on average 1.4265402843601895) internal successors, (3311), 2333 states have internal predecessors, (3311), 448 states have call successors, (448), 118 states have call predecessors, (448), 123 states have return successors, (466), 449 states have call predecessors, (466), 447 states have call successors, (466) [2022-07-12 12:42:09,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 4225 transitions. [2022-07-12 12:42:09,602 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 4225 transitions. Word has length 206 [2022-07-12 12:42:09,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:42:09,603 INFO L495 AbstractCegarLoop]: Abstraction has 2893 states and 4225 transitions. [2022-07-12 12:42:09,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 12:42:09,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 4225 transitions. [2022-07-12 12:42:09,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-12 12:42:09,610 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:42:09,610 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:42:09,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 12:42:09,610 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:42:09,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:42:09,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1037721725, now seen corresponding path program 1 times [2022-07-12 12:42:09,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:42:09,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955563288] [2022-07-12 12:42:09,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:42:09,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:42:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:42:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:42:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:42:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:42:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 12:42:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 12:42:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 12:42:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 12:42:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 12:42:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 12:42:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:42:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 12:42:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 12:42:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 12:42:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 12:42:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-12 12:42:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 12:42:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:42:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:42:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:42:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:13,442 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-07-12 12:42:13,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:42:13,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955563288] [2022-07-12 12:42:13,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955563288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:42:13,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:42:13,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-12 12:42:13,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072587243] [2022-07-12 12:42:13,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:42:13,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 12:42:13,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:42:13,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 12:42:13,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2022-07-12 12:42:13,443 INFO L87 Difference]: Start difference. First operand 2893 states and 4225 transitions. Second operand has 17 states, 16 states have (on average 8.375) internal successors, (134), 11 states have internal predecessors, (134), 3 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 12:42:15,822 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 [] [2022-07-12 12:42:22,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:42:24,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:42:26,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:42:31,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:42:35,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:42:39,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:42:40,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:42:40,243 INFO L93 Difference]: Finished difference Result 7254 states and 10841 transitions. [2022-07-12 12:42:40,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 12:42:40,244 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 8.375) internal successors, (134), 11 states have internal predecessors, (134), 3 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) Word has length 207 [2022-07-12 12:42:40,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:42:40,253 INFO L225 Difference]: With dead ends: 7254 [2022-07-12 12:42:40,253 INFO L226 Difference]: Without dead ends: 4583 [2022-07-12 12:42:40,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2022-07-12 12:42:40,258 INFO L413 NwaCegarLoop]: 2549 mSDtfsCounter, 957 mSDsluCounter, 28318 mSDsCounter, 0 mSdLazyCounter, 6622 mSolverCounterSat, 200 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 30867 SdHoareTripleChecker+Invalid, 6827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 6622 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:42:40,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 30867 Invalid, 6827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 6622 Invalid, 5 Unknown, 0 Unchecked, 26.3s Time] [2022-07-12 12:42:40,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4583 states. [2022-07-12 12:42:40,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4583 to 2897. [2022-07-12 12:42:40,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 2325 states have (on average 1.4258064516129032) internal successors, (3315), 2335 states have internal predecessors, (3315), 448 states have call successors, (448), 118 states have call predecessors, (448), 123 states have return successors, (466), 451 states have call predecessors, (466), 447 states have call successors, (466) [2022-07-12 12:42:40,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 4229 transitions. [2022-07-12 12:42:40,388 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 4229 transitions. Word has length 207 [2022-07-12 12:42:40,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:42:40,389 INFO L495 AbstractCegarLoop]: Abstraction has 2897 states and 4229 transitions. [2022-07-12 12:42:40,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 8.375) internal successors, (134), 11 states have internal predecessors, (134), 3 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 12:42:40,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 4229 transitions. [2022-07-12 12:42:40,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-12 12:42:40,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:42:40,395 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:42:40,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 12:42:40,395 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:42:40,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:42:40,396 INFO L85 PathProgramCache]: Analyzing trace with hash -724420287, now seen corresponding path program 1 times [2022-07-12 12:42:40,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:42:40,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670358360] [2022-07-12 12:42:40,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:42:40,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:42:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:42:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:42:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:42:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:42:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 12:42:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 12:42:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 12:42:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 12:42:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 12:42:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 12:42:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:42:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 12:42:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:42:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:42:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:42:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 12:42:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 12:42:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 12:42:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:42:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:42:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-12 12:42:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:42:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-12 12:42:40,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:42:40,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670358360] [2022-07-12 12:42:40,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670358360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:42:40,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:42:40,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 12:42:40,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270699437] [2022-07-12 12:42:40,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:42:40,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 12:42:40,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:42:40,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 12:42:40,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:42:40,776 INFO L87 Difference]: Start difference. First operand 2897 states and 4229 transitions. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (22), 8 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 12:42:42,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:42:44,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:42:47,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:42:54,512 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:42:56,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:42:58,595 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:43:00,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:43:00,020 INFO L93 Difference]: Finished difference Result 5691 states and 8346 transitions. [2022-07-12 12:43:00,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 12:43:00,020 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (22), 8 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 207 [2022-07-12 12:43:00,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:43:00,027 INFO L225 Difference]: With dead ends: 5691 [2022-07-12 12:43:00,028 INFO L226 Difference]: Without dead ends: 3016 [2022-07-12 12:43:00,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-07-12 12:43:00,034 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 604 mSDsluCounter, 4613 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 622 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 6191 SdHoareTripleChecker+Invalid, 2857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:43:00,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 6191 Invalid, 2857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 2229 Invalid, 6 Unknown, 0 Unchecked, 19.0s Time] [2022-07-12 12:43:00,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2022-07-12 12:43:00,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 2895. [2022-07-12 12:43:00,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2323 states have (on average 1.425312096427034) internal successors, (3311), 2333 states have internal predecessors, (3311), 448 states have call successors, (448), 118 states have call predecessors, (448), 123 states have return successors, (466), 451 states have call predecessors, (466), 447 states have call successors, (466) [2022-07-12 12:43:00,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 4225 transitions. [2022-07-12 12:43:00,156 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 4225 transitions. Word has length 207 [2022-07-12 12:43:00,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:43:00,156 INFO L495 AbstractCegarLoop]: Abstraction has 2895 states and 4225 transitions. [2022-07-12 12:43:00,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (22), 8 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 12:43:00,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 4225 transitions. [2022-07-12 12:43:00,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-12 12:43:00,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:43:00,162 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:43:00,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 12:43:00,162 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:43:00,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:43:00,163 INFO L85 PathProgramCache]: Analyzing trace with hash 914463290, now seen corresponding path program 1 times [2022-07-12 12:43:00,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:43:00,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371472765] [2022-07-12 12:43:00,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:43:00,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:43:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:43:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:43:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:43:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:43:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 12:43:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 12:43:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 12:43:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 12:43:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 12:43:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 12:43:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:43:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 12:43:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:43:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:43:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:43:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 12:43:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 12:43:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 12:43:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:43:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 12:43:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:43:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-12 12:43:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:43:00,535 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-12 12:43:00,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:43:00,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371472765] [2022-07-12 12:43:00,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371472765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:43:00,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:43:00,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 12:43:00,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884558399] [2022-07-12 12:43:00,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:43:00,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 12:43:00,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:43:00,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 12:43:00,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:43:00,537 INFO L87 Difference]: Start difference. First operand 2895 states and 4225 transitions. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (23), 8 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 12:43:02,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:43:04,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:43:09,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-12 12:43:17,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:43:19,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:43:22,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:43:24,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:43:24,064 INFO L93 Difference]: Finished difference Result 6932 states and 10328 transitions. [2022-07-12 12:43:24,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:43:24,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (23), 8 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 211 [2022-07-12 12:43:24,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:43:24,077 INFO L225 Difference]: With dead ends: 6932 [2022-07-12 12:43:24,077 INFO L226 Difference]: Without dead ends: 4259 [2022-07-12 12:43:24,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-12 12:43:24,095 INFO L413 NwaCegarLoop]: 2263 mSDtfsCounter, 1438 mSDsluCounter, 6049 mSDsCounter, 0 mSdLazyCounter, 2987 mSolverCounterSat, 650 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 8312 SdHoareTripleChecker+Invalid, 3641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 2987 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:43:24,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 8312 Invalid, 3641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 2987 Invalid, 4 Unknown, 0 Unchecked, 23.1s Time] [2022-07-12 12:43:24,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4259 states. [2022-07-12 12:43:24,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4259 to 2895. [2022-07-12 12:43:24,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2323 states have (on average 1.4244511407662506) internal successors, (3309), 2333 states have internal predecessors, (3309), 448 states have call successors, (448), 118 states have call predecessors, (448), 123 states have return successors, (466), 451 states have call predecessors, (466), 447 states have call successors, (466) [2022-07-12 12:43:24,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 4223 transitions. [2022-07-12 12:43:24,267 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 4223 transitions. Word has length 211 [2022-07-12 12:43:24,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:43:24,268 INFO L495 AbstractCegarLoop]: Abstraction has 2895 states and 4223 transitions. [2022-07-12 12:43:24,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 3 states have internal predecessors, (139), 3 states have call successors, (23), 8 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 12:43:24,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 4223 transitions. [2022-07-12 12:43:24,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-12 12:43:24,276 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:43:24,276 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:43:24,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 12:43:24,277 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:43:24,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:43:24,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1318394081, now seen corresponding path program 1 times [2022-07-12 12:43:24,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:43:24,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705507912] [2022-07-12 12:43:24,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:43:24,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms