./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 c3fed411 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-tmp.no-commuhash-c3fed41 [2021-12-16 04:00:20,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 04:00:20,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 04:00:20,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 04:00:20,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 04:00:20,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 04:00:20,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 04:00:20,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 04:00:20,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 04:00:20,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 04:00:20,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 04:00:20,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 04:00:20,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 04:00:20,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 04:00:20,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 04:00:20,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 04:00:20,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 04:00:20,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 04:00:20,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 04:00:20,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 04:00:20,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 04:00:20,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 04:00:20,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 04:00:20,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 04:00:20,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 04:00:20,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 04:00:20,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 04:00:20,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 04:00:20,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 04:00:20,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 04:00:20,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 04:00:20,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 04:00:20,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 04:00:20,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 04:00:20,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 04:00:20,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 04:00:20,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 04:00:20,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 04:00:20,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 04:00:20,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 04:00:20,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 04:00:20,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 04:00:20,688 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 04:00:20,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 04:00:20,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 04:00:20,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 04:00:20,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 04:00:20,692 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 04:00:20,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 04:00:20,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 04:00:20,692 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 04:00:20,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 04:00:20,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 04:00:20,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 04:00:20,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 04:00:20,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 04:00:20,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 04:00:20,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 04:00:20,694 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 04:00:20,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 04:00:20,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 04:00:20,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 04:00:20,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 04:00:20,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:00:20,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 04:00:20,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 04:00:20,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 04:00:20,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 04:00:20,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 04:00:20,696 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 04:00:20,696 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 04:00:20,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 04:00:20,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 04:00:20,697 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e928bce7a5eba940349fe986fce1ee6d952316584823caa32f480aa4c9f0c38 [2021-12-16 04:00:20,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 04:00:20,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 04:00:20,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 04:00:20,950 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 04:00:20,951 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 04:00:20,952 INFO L432 ainManager$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 [2021-12-16 04:00:21,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8ea8de70/df98b58fa9404510b06083021671225a/FLAGf77459c3b [2021-12-16 04:00:21,734 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 04:00:21,734 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 [2021-12-16 04:00:21,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8ea8de70/df98b58fa9404510b06083021671225a/FLAGf77459c3b [2021-12-16 04:00:21,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8ea8de70/df98b58fa9404510b06083021671225a [2021-12-16 04:00:21,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 04:00:21,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 04:00:21,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 04:00:21,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 04:00:21,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 04:00:21,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:00:21" (1/1) ... [2021-12-16 04:00:21,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d43f8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:21, skipping insertion in model container [2021-12-16 04:00:21,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:00:21" (1/1) ... [2021-12-16 04:00:21,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 04:00:21,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 04:00:22,560 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] [2021-12-16 04:00:23,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:00:23,242 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 04:00:23,389 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] [2021-12-16 04:00:23,534 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:00:23,662 INFO L208 MainTranslator]: Completed translation [2021-12-16 04:00:23,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:23 WrapperNode [2021-12-16 04:00:23,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 04:00:23,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 04:00:23,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 04:00:23,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 04:00:23,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:23" (1/1) ... [2021-12-16 04:00:23,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:23" (1/1) ... [2021-12-16 04:00:23,915 INFO L137 Inliner]: procedures = 188, calls = 2240, calls flagged for inlining = 91, calls inlined = 86, statements flattened = 4876 [2021-12-16 04:00:23,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 04:00:23,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 04:00:23,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 04:00:23,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 04:00:23,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:23" (1/1) ... [2021-12-16 04:00:23,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:23" (1/1) ... [2021-12-16 04:00:23,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:23" (1/1) ... [2021-12-16 04:00:23,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:23" (1/1) ... [2021-12-16 04:00:24,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:23" (1/1) ... [2021-12-16 04:00:24,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:23" (1/1) ... [2021-12-16 04:00:24,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:23" (1/1) ... [2021-12-16 04:00:24,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 04:00:24,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 04:00:24,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 04:00:24,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 04:00:24,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:23" (1/1) ... [2021-12-16 04:00:24,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:00:24,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 04:00:24,112 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) [2021-12-16 04:00:24,120 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 [2021-12-16 04:00:24,140 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-16 04:00:24,140 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-16 04:00:24,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2021-12-16 04:00:24,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2021-12-16 04:00:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 04:00:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_release_host [2021-12-16 04:00:24,141 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_release_host [2021-12-16 04:00:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_data_to_card [2021-12-16 04:00:24,141 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_data_to_card [2021-12-16 04:00:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 04:00:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 04:00:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-16 04:00:24,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-16 04:00:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 04:00:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_get_host_pm_caps [2021-12-16 04:00:24,142 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_get_host_pm_caps [2021-12-16 04:00:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_data_sync [2021-12-16 04:00:24,142 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_data_sync [2021-12-16 04:00:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-16 04:00:24,143 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-16 04:00:24,143 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_sdio_card_to_host [2021-12-16 04:00:24,143 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_sdio_card_to_host [2021-12-16 04:00:24,143 INFO L130 BoogieDeclarations]: Found specification of procedure mp_tx_aggr_port_limit_reached [2021-12-16 04:00:24,143 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_tx_aggr_port_limit_reached [2021-12-16 04:00:24,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 04:00:24,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 04:00:24,143 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-12-16 04:00:24,144 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-12-16 04:00:24,144 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_get_priv [2021-12-16 04:00:24,144 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_get_priv [2021-12-16 04:00:24,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-16 04:00:24,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-16 04:00:24,144 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-16 04:00:24,144 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-16 04:00:24,144 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-12-16 04:00:24,144 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-12-16 04:00:24,145 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_read_reg [2021-12-16 04:00:24,145 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_read_reg [2021-12-16 04:00:24,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 04:00:24,145 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_reg [2021-12-16 04:00:24,145 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_reg [2021-12-16 04:00:24,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 04:00:24,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 04:00:24,146 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_read_data_sync [2021-12-16 04:00:24,146 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_read_data_sync [2021-12-16 04:00:24,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 04:00:24,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 04:00:24,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-12-16 04:00:24,146 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 04:00:24,146 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 04:00:24,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 04:00:24,147 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-16 04:00:24,147 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-16 04:00:24,147 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-16 04:00:24,147 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-16 04:00:24,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 04:00:24,148 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_release_irq [2021-12-16 04:00:24,149 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_release_irq [2021-12-16 04:00:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_disable_func [2021-12-16 04:00:24,149 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_disable_func [2021-12-16 04:00:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 04:00:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 04:00:24,149 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_claim_host [2021-12-16 04:00:24,150 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_claim_host [2021-12-16 04:00:24,150 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_reg_locked [2021-12-16 04:00:24,150 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_reg_locked [2021-12-16 04:00:24,150 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_sdio_cmdrsp_complete [2021-12-16 04:00:24,150 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_sdio_cmdrsp_complete [2021-12-16 04:00:24,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 04:00:24,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-12-16 04:00:24,151 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-16 04:00:24,151 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-16 04:00:24,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 04:00:24,151 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-12-16 04:00:24,152 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-12-16 04:00:24,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 04:00:24,152 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-16 04:00:24,152 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-16 04:00:24,152 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-16 04:00:24,152 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-16 04:00:24,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-12-16 04:00:24,152 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-12-16 04:00:24,152 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-16 04:00:24,153 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-16 04:00:24,153 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-12-16 04:00:24,153 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-12-16 04:00:24,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 04:00:24,153 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_host_to_card_mp_aggr [2021-12-16 04:00:24,153 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_host_to_card_mp_aggr [2021-12-16 04:00:24,153 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_sdio_resume [2021-12-16 04:00:24,154 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_sdio_resume [2021-12-16 04:00:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 04:00:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-12-16 04:00:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-16 04:00:24,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-16 04:00:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_decode_rx_packet [2021-12-16 04:00:24,155 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_decode_rx_packet [2021-12-16 04:00:24,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 04:00:24,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 04:00:24,776 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 04:00:24,777 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 04:00:24,893 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-16 04:00:31,330 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 04:00:31,346 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 04:00:31,347 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 04:00:31,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:00:31 BoogieIcfgContainer [2021-12-16 04:00:31,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 04:00:31,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 04:00:31,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 04:00:31,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 04:00:31,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:00:21" (1/3) ... [2021-12-16 04:00:31,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd8782b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:00:31, skipping insertion in model container [2021-12-16 04:00:31,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:23" (2/3) ... [2021-12-16 04:00:31,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd8782b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:00:31, skipping insertion in model container [2021-12-16 04:00:31,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:00:31" (3/3) ... [2021-12-16 04:00:31,359 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 [2021-12-16 04:00:31,362 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 04:00:31,363 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 04:00:31,398 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 04:00:31,405 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 [2021-12-16 04:00:31,405 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 04:00:31,439 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) [2021-12-16 04:00:31,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-16 04:00:31,453 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:00:31,454 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] [2021-12-16 04:00:31,454 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:00:31,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:00:31,459 INFO L85 PathProgramCache]: Analyzing trace with hash -601957003, now seen corresponding path program 1 times [2021-12-16 04:00:31,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:00:31,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30455616] [2021-12-16 04:00:31,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:00:31,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:00:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:31,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:00:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:31,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:00:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:31,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:00:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:31,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:00:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:31,954 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 04:00:31,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:00:31,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30455616] [2021-12-16 04:00:31,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30455616] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:00:31,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:00:31,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:00:31,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138945049] [2021-12-16 04:00:31,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:00:31,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:00:31,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:00:31,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:00:31,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:00:31,987 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) [2021-12-16 04:00:34,212 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 [] [2021-12-16 04:00:38,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:00:39,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:00:39,028 INFO L93 Difference]: Finished difference Result 3230 states and 4862 transitions. [2021-12-16 04:00:39,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:00:39,030 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 [2021-12-16 04:00:39,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:00:39,048 INFO L225 Difference]: With dead ends: 3230 [2021-12-16 04:00:39,049 INFO L226 Difference]: Without dead ends: 2148 [2021-12-16 04:00:39,055 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 [2021-12-16 04:00:39,057 INFO L933 BasicCegarLoop]: 1809 mSDtfsCounter, 1720 mSDsluCounter, 2292 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 421 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1842 SdHoareTripleChecker+Valid, 4101 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-12-16 04:00:39,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1842 Valid, 4101 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 836 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-12-16 04:00:39,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2021-12-16 04:00:39,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2066. [2021-12-16 04:00:39,215 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) [2021-12-16 04:00:39,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 3053 transitions. [2021-12-16 04:00:39,232 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 3053 transitions. Word has length 46 [2021-12-16 04:00:39,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:00:39,234 INFO L470 AbstractCegarLoop]: Abstraction has 2066 states and 3053 transitions. [2021-12-16 04:00:39,235 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) [2021-12-16 04:00:39,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 3053 transitions. [2021-12-16 04:00:39,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-16 04:00:39,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:00:39,239 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] [2021-12-16 04:00:39,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 04:00:39,240 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:00:39,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:00:39,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1981556391, now seen corresponding path program 1 times [2021-12-16 04:00:39,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:00:39,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147342227] [2021-12-16 04:00:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:00:39,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:00:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:39,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:00:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:39,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:00:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:39,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:00:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:39,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:00:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:39,484 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 04:00:39,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:00:39,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147342227] [2021-12-16 04:00:39,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147342227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:00:39,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:00:39,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:00:39,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852708547] [2021-12-16 04:00:39,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:00:39,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:00:39,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:00:39,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:00:39,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:00:39,491 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) [2021-12-16 04:00:41,604 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 [] [2021-12-16 04:00:44,624 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 [] [2021-12-16 04:00:47,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:00:47,613 INFO L93 Difference]: Finished difference Result 6335 states and 9421 transitions. [2021-12-16 04:00:47,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:00:47,614 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 [2021-12-16 04:00:47,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:00:47,632 INFO L225 Difference]: With dead ends: 6335 [2021-12-16 04:00:47,632 INFO L226 Difference]: Without dead ends: 4271 [2021-12-16 04:00:47,639 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 [2021-12-16 04:00:47,639 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 1770 mSDsluCounter, 5439 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 421 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 7163 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-12-16 04:00:47,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1898 Valid, 7163 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 1187 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2021-12-16 04:00:47,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4271 states. [2021-12-16 04:00:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4271 to 4137. [2021-12-16 04:00:47,757 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) [2021-12-16 04:00:47,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 6123 transitions. [2021-12-16 04:00:47,772 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 6123 transitions. Word has length 46 [2021-12-16 04:00:47,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:00:47,772 INFO L470 AbstractCegarLoop]: Abstraction has 4137 states and 6123 transitions. [2021-12-16 04:00:47,773 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) [2021-12-16 04:00:47,773 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 6123 transitions. [2021-12-16 04:00:47,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-16 04:00:47,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:00:47,782 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] [2021-12-16 04:00:47,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 04:00:47,783 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:00:47,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:00:47,783 INFO L85 PathProgramCache]: Analyzing trace with hash -642422905, now seen corresponding path program 1 times [2021-12-16 04:00:47,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:00:47,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895576422] [2021-12-16 04:00:47,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:00:47,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:00:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:47,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:00:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:47,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:00:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:47,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:00:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:47,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:00:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:47,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 04:00:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:47,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 04:00:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:48,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 04:00:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:48,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 04:00:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:48,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:00:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:48,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:00:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-16 04:00:48,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:00:48,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895576422] [2021-12-16 04:00:48,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895576422] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:00:48,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:00:48,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 04:00:48,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36549617] [2021-12-16 04:00:48,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:00:48,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 04:00:48,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:00:48,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 04:00:48,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:00:48,059 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) [2021-12-16 04:00:50,127 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 [] [2021-12-16 04:00:52,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-16 04:00:56,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:00:56,496 INFO L93 Difference]: Finished difference Result 6996 states and 10303 transitions. [2021-12-16 04:00:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:00:56,497 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 [2021-12-16 04:00:56,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:00:56,511 INFO L225 Difference]: With dead ends: 6996 [2021-12-16 04:00:56,511 INFO L226 Difference]: Without dead ends: 2871 [2021-12-16 04:00:56,521 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 [2021-12-16 04:00:56,527 INFO L933 BasicCegarLoop]: 1535 mSDtfsCounter, 768 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 458 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 3636 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-12-16 04:00:56,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 3636 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 777 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2021-12-16 04:00:56,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2021-12-16 04:00:56,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2756. [2021-12-16 04:00:56,614 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) [2021-12-16 04:00:56,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 4019 transitions. [2021-12-16 04:00:56,623 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 4019 transitions. Word has length 103 [2021-12-16 04:00:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:00:56,624 INFO L470 AbstractCegarLoop]: Abstraction has 2756 states and 4019 transitions. [2021-12-16 04:00:56,625 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) [2021-12-16 04:00:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 4019 transitions. [2021-12-16 04:00:56,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-16 04:00:56,634 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:00:56,634 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] [2021-12-16 04:00:56,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 04:00:56,635 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:00:56,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:00:56,635 INFO L85 PathProgramCache]: Analyzing trace with hash 96929181, now seen corresponding path program 1 times [2021-12-16 04:00:56,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:00:56,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869044665] [2021-12-16 04:00:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:00:56,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:00:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:56,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:00:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:56,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:00:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:56,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:00:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:57,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:00:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:57,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 04:00:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:57,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 04:00:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:57,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 04:00:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:57,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 04:00:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:57,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 04:00:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:57,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 04:00:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:57,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 04:00:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:57,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 04:00:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:57,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:00:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:57,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:00:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-12-16 04:00:57,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:00:57,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869044665] [2021-12-16 04:00:57,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869044665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:00:57,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:00:57,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 04:00:57,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437078572] [2021-12-16 04:00:57,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:00:57,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 04:00:57,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:00:57,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 04:00:57,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 04:00:57,286 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) [2021-12-16 04:00:59,398 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 [] [2021-12-16 04:01:03,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:01:03,790 INFO L93 Difference]: Finished difference Result 5380 states and 7886 transitions. [2021-12-16 04:01:03,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:01:03,791 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 [2021-12-16 04:01:03,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:01:03,804 INFO L225 Difference]: With dead ends: 5380 [2021-12-16 04:01:03,804 INFO L226 Difference]: Without dead ends: 2846 [2021-12-16 04:01:03,811 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 [2021-12-16 04:01:03,813 INFO L933 BasicCegarLoop]: 1498 mSDtfsCounter, 313 mSDsluCounter, 4913 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 384 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 6411 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-12-16 04:01:03,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 6411 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 1049 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-12-16 04:01:03,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2021-12-16 04:01:03,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2756. [2021-12-16 04:01:03,926 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) [2021-12-16 04:01:03,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 4019 transitions. [2021-12-16 04:01:03,964 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 4019 transitions. Word has length 144 [2021-12-16 04:01:03,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:01:03,966 INFO L470 AbstractCegarLoop]: Abstraction has 2756 states and 4019 transitions. [2021-12-16 04:01:03,966 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) [2021-12-16 04:01:03,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 4019 transitions. [2021-12-16 04:01:03,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-16 04:01:03,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:01:03,972 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] [2021-12-16 04:01:03,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 04:01:03,972 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:01:03,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:01:03,975 INFO L85 PathProgramCache]: Analyzing trace with hash 36910958, now seen corresponding path program 1 times [2021-12-16 04:01:03,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:01:03,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863581072] [2021-12-16 04:01:03,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:01:03,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:01:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:01:04,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:01:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:01:04,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:01:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:01:04,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:01:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:01:04,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:01:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:01:04,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 04:01:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:01:04,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 04:01:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:01:04,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 04:01:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:01:04,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 04:01:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:01:04,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 04:01:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:01:04,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 04:01:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:01:04,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 04:01:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:01:04,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 04:01:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:01:04,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:01:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:01:05,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:01:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:01:05,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 04:01:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:01:05,200 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-12-16 04:01:05,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:01:05,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863581072] [2021-12-16 04:01:05,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863581072] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:01:05,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:01:05,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-16 04:01:05,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928345958] [2021-12-16 04:01:05,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:01:05,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-16 04:01:05,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:01:05,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-16 04:01:05,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-12-16 04:01:05,202 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) [2021-12-16 04:01:07,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:01:09,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:01:14,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:01:16,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:01:22,339 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:01:26,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:01:28,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []