./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 e19ca921 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-dev-e19ca92 [2021-12-22 14:40:28,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:40:28,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:40:28,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:40:28,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:40:28,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:40:28,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:40:28,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:40:28,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:40:28,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:40:28,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:40:28,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:40:28,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:40:28,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:40:28,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:40:28,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:40:28,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:40:28,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:40:28,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:40:28,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:40:28,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:40:28,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:40:28,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:40:28,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:40:28,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:40:28,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:40:28,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:40:28,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:40:28,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:40:28,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:40:28,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:40:28,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:40:28,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:40:28,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:40:28,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:40:28,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:40:28,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:40:28,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:40:28,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:40:28,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:40:28,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:40:28,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:40:28,427 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:40:28,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:40:28,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:40:28,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:40:28,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:40:28,430 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:40:28,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:40:28,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:40:28,431 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:40:28,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:40:28,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:40:28,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:40:28,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:40:28,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:40:28,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:40:28,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:40:28,433 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:40:28,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:40:28,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:40:28,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:40:28,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:40:28,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:40:28,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:40:28,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:40:28,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:40:28,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:40:28,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:40:28,435 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:40:28,435 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:40:28,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:40:28,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:40:28,435 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e928bce7a5eba940349fe986fce1ee6d952316584823caa32f480aa4c9f0c38 [2021-12-22 14:40:28,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:40:28,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:40:28,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:40:28,619 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:40:28,619 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:40:28,620 INFO L432 ainManager$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 [2021-12-22 14:40:28,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f8edb2b9/85b1dce2acb640b4944331998b425571/FLAG3985965b8 [2021-12-22 14:40:29,337 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:40:29,337 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 [2021-12-22 14:40:29,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f8edb2b9/85b1dce2acb640b4944331998b425571/FLAG3985965b8 [2021-12-22 14:40:29,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f8edb2b9/85b1dce2acb640b4944331998b425571 [2021-12-22 14:40:29,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:40:29,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:40:29,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:40:29,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:40:29,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:40:29,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:40:29" (1/1) ... [2021-12-22 14:40:29,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d301eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:29, skipping insertion in model container [2021-12-22 14:40:29,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:40:29" (1/1) ... [2021-12-22 14:40:29,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:40:29,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:40:30,234 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] [2021-12-22 14:40:30,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:40:30,961 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:40:31,113 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] [2021-12-22 14:40:31,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:40:31,370 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:40:31,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:31 WrapperNode [2021-12-22 14:40:31,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:40:31,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:40:31,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:40:31,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:40:31,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:31" (1/1) ... [2021-12-22 14:40:31,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:31" (1/1) ... [2021-12-22 14:40:31,582 INFO L137 Inliner]: procedures = 188, calls = 2240, calls flagged for inlining = 91, calls inlined = 86, statements flattened = 4876 [2021-12-22 14:40:31,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:40:31,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:40:31,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:40:31,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:40:31,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:31" (1/1) ... [2021-12-22 14:40:31,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:31" (1/1) ... [2021-12-22 14:40:31,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:31" (1/1) ... [2021-12-22 14:40:31,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:31" (1/1) ... [2021-12-22 14:40:31,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:31" (1/1) ... [2021-12-22 14:40:31,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:31" (1/1) ... [2021-12-22 14:40:31,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:31" (1/1) ... [2021-12-22 14:40:31,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:40:31,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:40:31,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:40:31,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:40:31,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:31" (1/1) ... [2021-12-22 14:40:31,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:40:31,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:40:31,824 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) [2021-12-22 14:40:31,836 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 [2021-12-22 14:40:31,858 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-22 14:40:31,858 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-22 14:40:31,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2021-12-22 14:40:31,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2021-12-22 14:40:31,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:40:31,859 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_release_host [2021-12-22 14:40:31,859 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_release_host [2021-12-22 14:40:31,859 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_data_to_card [2021-12-22 14:40:31,859 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_data_to_card [2021-12-22 14:40:31,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:40:31,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:40:31,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 14:40:31,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 14:40:31,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:40:31,860 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_get_host_pm_caps [2021-12-22 14:40:31,860 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_get_host_pm_caps [2021-12-22 14:40:31,860 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_data_sync [2021-12-22 14:40:31,860 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_data_sync [2021-12-22 14:40:31,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 14:40:31,861 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 14:40:31,861 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_sdio_card_to_host [2021-12-22 14:40:31,861 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_sdio_card_to_host [2021-12-22 14:40:31,861 INFO L130 BoogieDeclarations]: Found specification of procedure mp_tx_aggr_port_limit_reached [2021-12-22 14:40:31,861 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_tx_aggr_port_limit_reached [2021-12-22 14:40:31,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:40:31,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:40:31,861 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-12-22 14:40:31,862 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-12-22 14:40:31,862 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_get_priv [2021-12-22 14:40:31,862 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_get_priv [2021-12-22 14:40:31,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-22 14:40:31,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-22 14:40:31,862 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:40:31,862 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:40:31,862 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-12-22 14:40:31,863 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-12-22 14:40:31,863 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_read_reg [2021-12-22 14:40:31,863 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_read_reg [2021-12-22 14:40:31,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:40:31,863 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_reg [2021-12-22 14:40:31,863 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_reg [2021-12-22 14:40:31,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:40:31,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:40:31,864 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_read_data_sync [2021-12-22 14:40:31,864 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_read_data_sync [2021-12-22 14:40:31,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:40:31,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:40:31,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-12-22 14:40:31,864 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:40:31,865 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:40:31,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:40:31,865 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-22 14:40:31,865 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-22 14:40:31,865 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-22 14:40:31,865 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-22 14:40:31,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:40:31,866 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_release_irq [2021-12-22 14:40:31,867 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_release_irq [2021-12-22 14:40:31,867 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_disable_func [2021-12-22 14:40:31,867 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_disable_func [2021-12-22 14:40:31,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:40:31,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:40:31,868 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_claim_host [2021-12-22 14:40:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_claim_host [2021-12-22 14:40:31,869 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_reg_locked [2021-12-22 14:40:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_reg_locked [2021-12-22 14:40:31,869 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_sdio_cmdrsp_complete [2021-12-22 14:40:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_sdio_cmdrsp_complete [2021-12-22 14:40:31,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:40:31,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-12-22 14:40:31,870 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-22 14:40:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-22 14:40:31,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:40:31,871 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-12-22 14:40:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-12-22 14:40:31,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:40:31,874 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-22 14:40:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-22 14:40:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-22 14:40:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-22 14:40:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-12-22 14:40:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-12-22 14:40:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-22 14:40:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-22 14:40:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-12-22 14:40:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-12-22 14:40:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:40:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_host_to_card_mp_aggr [2021-12-22 14:40:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_host_to_card_mp_aggr [2021-12-22 14:40:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_sdio_resume [2021-12-22 14:40:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_sdio_resume [2021-12-22 14:40:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:40:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-12-22 14:40:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-22 14:40:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-22 14:40:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_decode_rx_packet [2021-12-22 14:40:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_decode_rx_packet [2021-12-22 14:40:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:40:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:40:32,346 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:40:32,348 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:40:32,508 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 14:40:37,991 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:40:38,001 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:40:38,001 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 14:40:38,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:40:38 BoogieIcfgContainer [2021-12-22 14:40:38,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:40:38,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:40:38,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:40:38,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:40:38,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:40:29" (1/3) ... [2021-12-22 14:40:38,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8bc173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:40:38, skipping insertion in model container [2021-12-22 14:40:38,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:40:31" (2/3) ... [2021-12-22 14:40:38,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8bc173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:40:38, skipping insertion in model container [2021-12-22 14:40:38,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:40:38" (3/3) ... [2021-12-22 14:40:38,009 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 [2021-12-22 14:40:38,013 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:40:38,013 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:40:38,046 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:40:38,050 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 14:40:38,051 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:40:38,074 INFO L276 IsEmpty]: Start isEmpty. Operand has 1067 states, 834 states have (on average 1.4388489208633093) internal successors, (1200), 847 states have internal predecessors, (1200), 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) [2021-12-22 14:40:38,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 14:40:38,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:40:38,082 INFO L514 BasicCegarLoop]: 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] [2021-12-22 14:40:38,083 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:40:38,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:40:38,086 INFO L85 PathProgramCache]: Analyzing trace with hash -601957003, now seen corresponding path program 1 times [2021-12-22 14:40:38,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:40:38,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780878383] [2021-12-22 14:40:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:40:38,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:40:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:38,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:40:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:38,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:40:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:38,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:40:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:38,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:40:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:38,541 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 14:40:38,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:40:38,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780878383] [2021-12-22 14:40:38,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780878383] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:40:38,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:40:38,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:40:38,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766957329] [2021-12-22 14:40:38,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:40:38,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:40:38,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:40:38,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:40:38,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:40:38,568 INFO L87 Difference]: Start difference. First operand has 1067 states, 834 states have (on average 1.4388489208633093) internal successors, (1200), 847 states have internal predecessors, (1200), 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) [2021-12-22 14:40:40,695 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 [] [2021-12-22 14:40:44,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:40:44,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:40:44,996 INFO L93 Difference]: Finished difference Result 3230 states and 4862 transitions. [2021-12-22 14:40:44,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:40:44,998 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 [2021-12-22 14:40:44,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:40:45,017 INFO L225 Difference]: With dead ends: 3230 [2021-12-22 14:40:45,017 INFO L226 Difference]: Without dead ends: 2148 [2021-12-22 14:40:45,024 INFO L932 BasicCegarLoop]: 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 [2021-12-22 14:40:45,026 INFO L933 BasicCegarLoop]: 1816 mSDtfsCounter, 1720 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 421 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 4117 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:40:45,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1837 Valid, 4117 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 836 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-12-22 14:40:45,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2021-12-22 14:40:45,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2066. [2021-12-22 14:40:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2066 states, 1626 states have (on average 1.4317343173431734) internal successors, (2328), 1636 states have internal predecessors, (2328), 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) [2021-12-22 14:40:45,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 3053 transitions. [2021-12-22 14:40:45,174 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 3053 transitions. Word has length 46 [2021-12-22 14:40:45,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:40:45,175 INFO L470 AbstractCegarLoop]: Abstraction has 2066 states and 3053 transitions. [2021-12-22 14:40:45,175 INFO L471 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) [2021-12-22 14:40:45,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 3053 transitions. [2021-12-22 14:40:45,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 14:40:45,182 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:40:45,183 INFO L514 BasicCegarLoop]: 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] [2021-12-22 14:40:45,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:40:45,183 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:40:45,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:40:45,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1981556391, now seen corresponding path program 1 times [2021-12-22 14:40:45,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:40:45,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51238216] [2021-12-22 14:40:45,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:40:45,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:40:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:45,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:40:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:45,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:40:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:45,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:40:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:45,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:40:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:45,464 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 14:40:45,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:40:45,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51238216] [2021-12-22 14:40:45,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51238216] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:40:45,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:40:45,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:40:45,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011323541] [2021-12-22 14:40:45,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:40:45,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:40:45,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:40:45,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:40:45,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:40:45,471 INFO L87 Difference]: Start difference. First operand 2066 states and 3053 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) [2021-12-22 14:40:47,560 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 [] [2021-12-22 14:40:50,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:40:54,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:40:54,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:40:54,700 INFO L93 Difference]: Finished difference Result 6335 states and 9421 transitions. [2021-12-22 14:40:54,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:40:54,701 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 [2021-12-22 14:40:54,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:40:54,718 INFO L225 Difference]: With dead ends: 6335 [2021-12-22 14:40:54,719 INFO L226 Difference]: Without dead ends: 4271 [2021-12-22 14:40:54,726 INFO L932 BasicCegarLoop]: 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 [2021-12-22 14:40:54,727 INFO L933 BasicCegarLoop]: 1725 mSDtfsCounter, 1770 mSDsluCounter, 5442 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 421 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 7167 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:40:54,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1897 Valid, 7167 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 1187 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2021-12-22 14:40:54,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4271 states. [2021-12-22 14:40:54,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4271 to 4137. [2021-12-22 14:40:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4137 states, 3257 states have (on average 1.431992631255757) internal successors, (4664), 3279 states have internal predecessors, (4664), 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) [2021-12-22 14:40:54,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 6123 transitions. [2021-12-22 14:40:54,833 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 6123 transitions. Word has length 46 [2021-12-22 14:40:54,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:40:54,833 INFO L470 AbstractCegarLoop]: Abstraction has 4137 states and 6123 transitions. [2021-12-22 14:40:54,833 INFO L471 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) [2021-12-22 14:40:54,834 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 6123 transitions. [2021-12-22 14:40:54,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-22 14:40:54,843 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:40:54,843 INFO L514 BasicCegarLoop]: 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] [2021-12-22 14:40:54,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:40:54,843 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:40:54,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:40:54,844 INFO L85 PathProgramCache]: Analyzing trace with hash -642422905, now seen corresponding path program 1 times [2021-12-22 14:40:54,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:40:54,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838007030] [2021-12-22 14:40:54,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:40:54,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:40:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:55,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:40:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:55,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:40:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:55,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:40:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:55,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:40:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:55,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:40:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:55,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 14:40:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:55,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-22 14:40:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:55,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 14:40:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:55,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:55,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-22 14:40:55,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:40:55,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838007030] [2021-12-22 14:40:55,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838007030] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:40:55,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:40:55,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:40:55,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641402390] [2021-12-22 14:40:55,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:40:55,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:40:55,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:40:55,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:40:55,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:40:55,142 INFO L87 Difference]: Start difference. First operand 4137 states and 6123 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-12-22 14:40:57,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:41:00,985 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:41:01,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:41:01,437 INFO L93 Difference]: Finished difference Result 6996 states and 10303 transitions. [2021-12-22 14:41:01,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:41:01,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 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 103 [2021-12-22 14:41:01,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:41:01,448 INFO L225 Difference]: With dead ends: 6996 [2021-12-22 14:41:01,448 INFO L226 Difference]: Without dead ends: 2871 [2021-12-22 14:41:01,456 INFO L932 BasicCegarLoop]: 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 [2021-12-22 14:41:01,459 INFO L933 BasicCegarLoop]: 1537 mSDtfsCounter, 768 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 458 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 3642 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:41:01,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 3642 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 778 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2021-12-22 14:41:01,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2021-12-22 14:41:01,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2756. [2021-12-22 14:41:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2189 states have (on average 1.423937871174052) internal successors, (3117), 2202 states have internal predecessors, (3117), 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) [2021-12-22 14:41:01,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 4019 transitions. [2021-12-22 14:41:01,532 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 4019 transitions. Word has length 103 [2021-12-22 14:41:01,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:41:01,533 INFO L470 AbstractCegarLoop]: Abstraction has 2756 states and 4019 transitions. [2021-12-22 14:41:01,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-12-22 14:41:01,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 4019 transitions. [2021-12-22 14:41:01,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-22 14:41:01,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:41:01,543 INFO L514 BasicCegarLoop]: 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] [2021-12-22 14:41:01,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:41:01,543 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:41:01,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:41:01,543 INFO L85 PathProgramCache]: Analyzing trace with hash 96929181, now seen corresponding path program 1 times [2021-12-22 14:41:01,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:41:01,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934220608] [2021-12-22 14:41:01,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:41:01,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:41:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:01,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:41:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:01,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:41:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:41:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:01,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:41:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:01,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:41:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:01,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:41:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:01,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:41:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:01,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 14:41:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:01,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:41:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:01,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 14:41:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:01,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 14:41:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:01,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 14:41:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:01,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:41:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:01,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:41:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-12-22 14:41:02,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:41:02,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934220608] [2021-12-22 14:41:02,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934220608] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:41:02,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:41:02,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:41:02,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787409435] [2021-12-22 14:41:02,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:41:02,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:41:02,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:41:02,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:41:02,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:41:02,025 INFO L87 Difference]: Start difference. First operand 2756 states and 4019 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-12-22 14:41:04,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:41:08,042 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:41:08,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:41:08,639 INFO L93 Difference]: Finished difference Result 5380 states and 7886 transitions. [2021-12-22 14:41:08,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:41:08,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 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 144 [2021-12-22 14:41:08,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:41:08,658 INFO L225 Difference]: With dead ends: 5380 [2021-12-22 14:41:08,658 INFO L226 Difference]: Without dead ends: 2846 [2021-12-22 14:41:08,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:41:08,666 INFO L933 BasicCegarLoop]: 1501 mSDtfsCounter, 313 mSDsluCounter, 4925 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 384 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 6426 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:41:08,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 6426 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 1049 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-12-22 14:41:08,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2021-12-22 14:41:08,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2756. [2021-12-22 14:41:08,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2187 states have (on average 1.4224965706447188) internal successors, (3111), 2201 states have internal predecessors, (3111), 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) [2021-12-22 14:41:08,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 4019 transitions. [2021-12-22 14:41:08,746 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 4019 transitions. Word has length 144 [2021-12-22 14:41:08,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:41:08,747 INFO L470 AbstractCegarLoop]: Abstraction has 2756 states and 4019 transitions. [2021-12-22 14:41:08,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-12-22 14:41:08,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 4019 transitions. [2021-12-22 14:41:08,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-22 14:41:08,753 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:41:08,753 INFO L514 BasicCegarLoop]: 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] [2021-12-22 14:41:08,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:41:08,755 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:41:08,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:41:08,755 INFO L85 PathProgramCache]: Analyzing trace with hash 36910958, now seen corresponding path program 1 times [2021-12-22 14:41:08,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:41:08,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564355395] [2021-12-22 14:41:08,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:41:08,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:41:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:10,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:41:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:10,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:41:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:10,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:41:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:10,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:41:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:10,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:41:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:10,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:41:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:10,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:41:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:10,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 14:41:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:10,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:41:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:10,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 14:41:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:10,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 14:41:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:10,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 14:41:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:10,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:41:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:10,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:41:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:10,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:41:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-12-22 14:41:10,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:41:10,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564355395] [2021-12-22 14:41:10,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564355395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:41:10,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:41:10,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-22 14:41:10,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031191820] [2021-12-22 14:41:10,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:41:10,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-22 14:41:10,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:41:10,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-22 14:41:10,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-12-22 14:41:10,801 INFO L87 Difference]: Start difference. First operand 2756 states and 4019 transitions. Second operand has 17 states, 16 states have (on average 6.0) internal successors, (96), 11 states have internal predecessors, (96), 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) [2021-12-22 14:41:13,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:41:15,039 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:41:23,012 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:41:27,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:41:30,077 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 [] [2021-12-22 14:41:30,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:41:30,613 INFO L93 Difference]: Finished difference Result 6799 states and 10167 transitions. [2021-12-22 14:41:30,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 14:41:30,614 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.0) internal successors, (96), 11 states have internal predecessors, (96), 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 151 [2021-12-22 14:41:30,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:41:30,631 INFO L225 Difference]: With dead ends: 6799 [2021-12-22 14:41:30,631 INFO L226 Difference]: Without dead ends: 4265 [2021-12-22 14:41:30,637 INFO L932 BasicCegarLoop]: 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 [2021-12-22 14:41:30,638 INFO L933 BasicCegarLoop]: 2372 mSDtfsCounter, 839 mSDsluCounter, 30928 mSDsCounter, 0 mSdLazyCounter, 4083 mSolverCounterSat, 201 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 33300 SdHoareTripleChecker+Invalid, 4289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 4083 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:41:30,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 33300 Invalid, 4289 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [201 Valid, 4083 Invalid, 5 Unknown, 0 Unchecked, 19.4s Time] [2021-12-22 14:41:30,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4265 states. [2021-12-22 14:41:30,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4265 to 2763. [2021-12-22 14:41:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2193 states have (on average 1.4204286365709073) internal successors, (3115), 2205 states have internal predecessors, (3115), 446 states have call successors, (446), 118 states have call predecessors, (446), 123 states have return successors, (464), 447 states have call predecessors, (464), 445 states have call successors, (464) [2021-12-22 14:41:30,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4025 transitions. [2021-12-22 14:41:30,747 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4025 transitions. Word has length 151 [2021-12-22 14:41:30,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:41:30,748 INFO L470 AbstractCegarLoop]: Abstraction has 2763 states and 4025 transitions. [2021-12-22 14:41:30,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.0) internal successors, (96), 11 states have internal predecessors, (96), 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) [2021-12-22 14:41:30,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4025 transitions. [2021-12-22 14:41:30,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-22 14:41:30,755 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:41:30,755 INFO L514 BasicCegarLoop]: 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] [2021-12-22 14:41:30,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:41:30,755 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:41:30,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:41:30,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1511771000, now seen corresponding path program 1 times [2021-12-22 14:41:30,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:41:30,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750564618] [2021-12-22 14:41:30,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:41:30,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:41:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:30,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:41:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:30,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:41:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:30,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:41:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:30,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:41:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:30,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 14:41:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:30,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:41:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:30,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:41:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:31,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 14:41:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:31,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 14:41:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:31,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 14:41:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:31,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 14:41:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:31,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 14:41:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:31,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 14:41:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:31,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 14:41:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:31,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-22 14:41:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:31,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 14:41:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:31,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:41:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:31,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:41:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:31,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:41:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:41:31,095 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-12-22 14:41:31,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:41:31,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750564618] [2021-12-22 14:41:31,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750564618] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:41:31,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:41:31,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:41:31,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122443316] [2021-12-22 14:41:31,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:41:31,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:41:31,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:41:31,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:41:31,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:41:31,097 INFO L87 Difference]: Start difference. First operand 2763 states and 4025 transitions. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2021-12-22 14:41:33,205 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 []