./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--at76c50x-usb.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--at76c50x-usb.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 d88455bf5089be24833f69dfcbd91003e7e136bcd5efcd63ae18e59d7f59e87d --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 04:00:03,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 04:00:03,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 04:00:03,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 04:00:03,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 04:00:03,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 04:00:03,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 04:00:03,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 04:00:03,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 04:00:03,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 04:00:03,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 04:00:03,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 04:00:03,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 04:00:03,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 04:00:03,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 04:00:03,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 04:00:03,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 04:00:03,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 04:00:03,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 04:00:03,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 04:00:03,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 04:00:03,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 04:00:03,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 04:00:03,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 04:00:03,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 04:00:03,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 04:00:03,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 04:00:03,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 04:00:03,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 04:00:03,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 04:00:03,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 04:00:03,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 04:00:03,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 04:00:03,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 04:00:03,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 04:00:03,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 04:00:03,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 04:00:03,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 04:00:03,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 04:00:03,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 04:00:03,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 04:00:03,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 04:00:03,652 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 04:00:03,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 04:00:03,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 04:00:03,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 04:00:03,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 04:00:03,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 04:00:03,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 04:00:03,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 04:00:03,654 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 04:00:03,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 04:00:03,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 04:00:03,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 04:00:03,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 04:00:03,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 04:00:03,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 04:00:03,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 04:00:03,655 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 04:00:03,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 04:00:03,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 04:00:03,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 04:00:03,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 04:00:03,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:00:03,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 04:00:03,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 04:00:03,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 04:00:03,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 04:00:03,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 04:00:03,657 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 04:00:03,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 04:00:03,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 04:00:03,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 04:00:03,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d88455bf5089be24833f69dfcbd91003e7e136bcd5efcd63ae18e59d7f59e87d [2021-12-16 04:00:03,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 04:00:03,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 04:00:03,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 04:00:03,838 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 04:00:03,839 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 04:00:03,840 INFO L432 ainManager$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--at76c50x-usb.ko-entry_point.cil.out.i [2021-12-16 04:00:03,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1d9b9613/99a0144629104771ab89b15297340a92/FLAG945b2c703 [2021-12-16 04:00:04,553 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 04:00:04,553 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--at76c50x-usb.ko-entry_point.cil.out.i [2021-12-16 04:00:04,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1d9b9613/99a0144629104771ab89b15297340a92/FLAG945b2c703 [2021-12-16 04:00:04,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1d9b9613/99a0144629104771ab89b15297340a92 [2021-12-16 04:00:04,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 04:00:04,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 04:00:04,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 04:00:04,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 04:00:04,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 04:00:04,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:00:04" (1/1) ... [2021-12-16 04:00:04,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df2588f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:04, skipping insertion in model container [2021-12-16 04:00:04,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:00:04" (1/1) ... [2021-12-16 04:00:04,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 04:00:04,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 04:00:05,725 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--at76c50x-usb.ko-entry_point.cil.out.i[205251,205264] [2021-12-16 04:00:06,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:00:06,574 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 04:00:06,666 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--at76c50x-usb.ko-entry_point.cil.out.i[205251,205264] [2021-12-16 04:00:06,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:00:06,886 INFO L208 MainTranslator]: Completed translation [2021-12-16 04:00:06,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:06 WrapperNode [2021-12-16 04:00:06,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 04:00:06,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 04:00:06,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 04:00:06,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 04:00:06,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:06" (1/1) ... [2021-12-16 04:00:06,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:06" (1/1) ... [2021-12-16 04:00:07,076 INFO L137 Inliner]: procedures = 239, calls = 2983, calls flagged for inlining = 111, calls inlined = 96, statements flattened = 5266 [2021-12-16 04:00:07,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 04:00:07,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 04:00:07,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 04:00:07,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 04:00:07,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:06" (1/1) ... [2021-12-16 04:00:07,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:06" (1/1) ... [2021-12-16 04:00:07,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:06" (1/1) ... [2021-12-16 04:00:07,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:06" (1/1) ... [2021-12-16 04:00:07,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:06" (1/1) ... [2021-12-16 04:00:07,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:06" (1/1) ... [2021-12-16 04:00:07,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:06" (1/1) ... [2021-12-16 04:00:07,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 04:00:07,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 04:00:07,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 04:00:07,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 04:00:07,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:06" (1/1) ... [2021-12-16 04:00:07,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:00:07,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 04:00:07,332 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 04:00:07,350 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 04:00:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure at76_hw_scan [2021-12-16 04:00:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_hw_scan [2021-12-16 04:00:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure at76_dfu_get_status [2021-12-16 04:00:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_dfu_get_status [2021-12-16 04:00:07,361 INFO L130 BoogieDeclarations]: Found specification of procedure at76_join [2021-12-16 04:00:07,361 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_join [2021-12-16 04:00:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-16 04:00:07,362 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-16 04:00:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 04:00:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 04:00:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-16 04:00:07,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-16 04:00:07,362 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2021-12-16 04:00:07,362 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2021-12-16 04:00:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure at76_submit_rx_urb [2021-12-16 04:00:07,363 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_submit_rx_urb [2021-12-16 04:00:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure at76_add_interface [2021-12-16 04:00:07,363 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_add_interface [2021-12-16 04:00:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_timeout [2021-12-16 04:00:07,363 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_timeout [2021-12-16 04:00:07,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 04:00:07,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 04:00:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-16 04:00:07,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-16 04:00:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure at76_bss_info_changed [2021-12-16 04:00:07,364 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_bss_info_changed [2021-12-16 04:00:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure at76_wait_completion [2021-12-16 04:00:07,364 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_wait_completion [2021-12-16 04:00:07,364 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-16 04:00:07,364 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-16 04:00:07,365 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-16 04:00:07,365 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-16 04:00:07,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 04:00:07,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 04:00:07,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-16 04:00:07,365 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-16 04:00:07,365 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 04:00:07,366 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 04:00:07,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 04:00:07,366 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-16 04:00:07,366 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-16 04:00:07,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 04:00:07,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-16 04:00:07,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-16 04:00:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure at76_delete_device [2021-12-16 04:00:07,367 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_delete_device [2021-12-16 04:00:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-12-16 04:00:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_mib [2021-12-16 04:00:07,367 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_mib [2021-12-16 04:00:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_radio [2021-12-16 04:00:07,368 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_radio [2021-12-16 04:00:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 04:00:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 04:00:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure led_trigger_event [2021-12-16 04:00:07,368 INFO L138 BoogieDeclarations]: Found implementation of procedure led_trigger_event [2021-12-16 04:00:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_card_command [2021-12-16 04:00:07,369 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_card_command [2021-12-16 04:00:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_cmd_status [2021-12-16 04:00:07,370 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_cmd_status [2021-12-16 04:00:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-12-16 04:00:07,370 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-12-16 04:00:07,370 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-16 04:00:07,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-16 04:00:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-16 04:00:07,371 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-16 04:00:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_delayed_work [2021-12-16 04:00:07,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_delayed_work [2021-12-16 04:00:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-16 04:00:07,371 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-16 04:00:07,371 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-16 04:00:07,371 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-16 04:00:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-16 04:00:07,372 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-16 04:00:07,372 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_mib [2021-12-16 04:00:07,372 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_mib [2021-12-16 04:00:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-16 04:00:07,373 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-16 04:00:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 04:00:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-16 04:00:07,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-16 04:00:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 04:00:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_pm_mode [2021-12-16 04:00:07,373 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_pm_mode [2021-12-16 04:00:07,373 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_key [2021-12-16 04:00:07,374 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_key [2021-12-16 04:00:07,374 INFO L130 BoogieDeclarations]: Found specification of procedure at76_is_505a [2021-12-16 04:00:07,374 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_is_505a [2021-12-16 04:00:07,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 04:00:07,374 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_hw_cfg [2021-12-16 04:00:07,374 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_hw_cfg [2021-12-16 04:00:07,375 INFO L130 BoogieDeclarations]: Found specification of procedure at76_config [2021-12-16 04:00:07,375 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_config [2021-12-16 04:00:07,375 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-12-16 04:00:07,375 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-12-16 04:00:07,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-16 04:00:07,376 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-16 04:00:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-16 04:00:07,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-16 04:00:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-16 04:00:07,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-16 04:00:07,377 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-12-16 04:00:07,377 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-12-16 04:00:07,377 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-16 04:00:07,377 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-16 04:00:07,377 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_op_mode [2021-12-16 04:00:07,377 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_op_mode [2021-12-16 04:00:07,377 INFO L130 BoogieDeclarations]: Found specification of procedure at76_remove_interface [2021-12-16 04:00:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_remove_interface [2021-12-16 04:00:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2021-12-16 04:00:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2021-12-16 04:00:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-16 04:00:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-16 04:00:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 04:00:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 04:00:07,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 04:00:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_name [2021-12-16 04:00:07,379 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_name [2021-12-16 04:00:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2021-12-16 04:00:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2021-12-16 04:00:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 04:00:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure at76_start_monitor [2021-12-16 04:00:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_start_monitor [2021-12-16 04:00:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_stop_queues [2021-12-16 04:00:07,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_stop_queues [2021-12-16 04:00:07,383 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-16 04:00:07,384 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-16 04:00:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 04:00:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-12-16 04:00:07,388 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-12-16 04:00:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 04:00:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-16 04:00:07,388 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-16 04:00:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-16 04:00:07,388 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-16 04:00:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-16 04:00:07,390 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-16 04:00:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-16 04:00:07,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-16 04:00:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure at76_configure_filter [2021-12-16 04:00:07,390 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_configure_filter [2021-12-16 04:00:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-16 04:00:07,390 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-16 04:00:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_work [2021-12-16 04:00:07,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_work [2021-12-16 04:00:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-12-16 04:00:07,391 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-12-16 04:00:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 04:00:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure at76_mac80211_tx [2021-12-16 04:00:07,391 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_mac80211_tx [2021-12-16 04:00:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 04:00:07,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 04:00:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-12-16 04:00:07,391 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-12-16 04:00:07,958 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 04:00:07,960 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 04:00:08,123 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-16 04:00:15,052 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 04:00:15,073 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 04:00:15,075 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-16 04:00:15,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:00:15 BoogieIcfgContainer [2021-12-16 04:00:15,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 04:00:15,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 04:00:15,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 04:00:15,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 04:00:15,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:00:04" (1/3) ... [2021-12-16 04:00:15,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669cb930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:00:15, skipping insertion in model container [2021-12-16 04:00:15,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:00:06" (2/3) ... [2021-12-16 04:00:15,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669cb930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:00:15, skipping insertion in model container [2021-12-16 04:00:15,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:00:15" (3/3) ... [2021-12-16 04:00:15,085 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2021-12-16 04:00:15,090 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 04:00:15,090 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 04:00:15,140 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 04:00:15,151 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 04:00:15,152 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 04:00:15,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 1340 states, 975 states have (on average 1.3876923076923078) internal successors, (1353), 999 states have internal predecessors, (1353), 296 states have call successors, (296), 68 states have call predecessors, (296), 67 states have return successors, (291), 290 states have call predecessors, (291), 291 states have call successors, (291) [2021-12-16 04:00:15,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-16 04:00:15,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:00:15,204 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-12-16 04:00:15,204 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:00:15,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:00:15,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1941045880, now seen corresponding path program 1 times [2021-12-16 04:00:15,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:00:15,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627434611] [2021-12-16 04:00:15,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:00:15,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:00:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:15,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:00:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:15,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:00:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:15,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:00:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:15,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:00:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:15,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 04:00:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:15,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 04:00:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:15,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 04:00:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:15,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 04:00:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:15,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 04:00:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:15,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 04:00:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:15,867 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-12-16 04:00:15,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:00:15,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627434611] [2021-12-16 04:00:15,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627434611] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:00:15,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:00:15,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 04:00:15,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284609043] [2021-12-16 04:00:15,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:00:15,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 04:00:15,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:00:15,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 04:00:15,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:00:15,895 INFO L87 Difference]: Start difference. First operand has 1340 states, 975 states have (on average 1.3876923076923078) internal successors, (1353), 999 states have internal predecessors, (1353), 296 states have call successors, (296), 68 states have call predecessors, (296), 67 states have return successors, (291), 290 states have call predecessors, (291), 291 states have call successors, (291) Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-16 04:00:22,484 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 04:00:24,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:00:26,553 WARN L534 Checker$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 04:00:28,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:00:29,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:00:29,802 INFO L93 Difference]: Finished difference Result 4269 states and 6520 transitions. [2021-12-16 04:00:29,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:00:29,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 80 [2021-12-16 04:00:29,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:00:29,836 INFO L225 Difference]: With dead ends: 4269 [2021-12-16 04:00:29,837 INFO L226 Difference]: Without dead ends: 2916 [2021-12-16 04:00:29,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 04:00:29,852 INFO L933 BasicCegarLoop]: 2151 mSDtfsCounter, 2859 mSDsluCounter, 3498 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 1555 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3113 SdHoareTripleChecker+Valid, 5649 SdHoareTripleChecker+Invalid, 3755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1555 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2021-12-16 04:00:29,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3113 Valid, 5649 Invalid, 3755 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1555 Valid, 2196 Invalid, 4 Unknown, 0 Unchecked, 13.4s Time] [2021-12-16 04:00:29,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2021-12-16 04:00:30,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2602. [2021-12-16 04:00:30,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 1902 states have (on average 1.3796004206098844) internal successors, (2624), 1936 states have internal predecessors, (2624), 567 states have call successors, (567), 133 states have call predecessors, (567), 132 states have return successors, (566), 564 states have call predecessors, (566), 566 states have call successors, (566) [2021-12-16 04:00:30,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3757 transitions. [2021-12-16 04:00:30,045 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3757 transitions. Word has length 80 [2021-12-16 04:00:30,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:00:30,046 INFO L470 AbstractCegarLoop]: Abstraction has 2602 states and 3757 transitions. [2021-12-16 04:00:30,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-16 04:00:30,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3757 transitions. [2021-12-16 04:00:30,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 04:00:30,054 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:00:30,054 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-16 04:00:30,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 04:00:30,057 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:00:30,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:00:30,058 INFO L85 PathProgramCache]: Analyzing trace with hash -227298957, now seen corresponding path program 1 times [2021-12-16 04:00:30,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:00:30,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977425301] [2021-12-16 04:00:30,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:00:30,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:00:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:30,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:00:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:30,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:00:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:30,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:00:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:30,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:00:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:30,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 04:00:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:30,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 04:00:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:30,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 04:00:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:30,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 04:00:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:30,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 04:00:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:30,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 04:00:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:30,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 04:00:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:30,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 04:00:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:30,509 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-16 04:00:30,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:00:30,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977425301] [2021-12-16 04:00:30,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977425301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:00:30,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:00:30,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 04:00:30,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86029207] [2021-12-16 04:00:30,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:00:30,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 04:00:30,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:00:30,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 04:00:30,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 04:00:30,512 INFO L87 Difference]: Start difference. First operand 2602 states and 3757 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-16 04:00:37,937 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 04:00:39,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:00:41,986 WARN L534 Checker$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 04:00:44,026 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 04:00:44,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:00:44,961 INFO L93 Difference]: Finished difference Result 8375 states and 12441 transitions. [2021-12-16 04:00:44,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 04:00:44,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 96 [2021-12-16 04:00:44,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:00:44,994 INFO L225 Difference]: With dead ends: 8375 [2021-12-16 04:00:44,994 INFO L226 Difference]: Without dead ends: 5787 [2021-12-16 04:00:45,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-16 04:00:45,004 INFO L933 BasicCegarLoop]: 2137 mSDtfsCounter, 2930 mSDsluCounter, 7296 mSDsCounter, 0 mSdLazyCounter, 3057 mSolverCounterSat, 1563 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3188 SdHoareTripleChecker+Valid, 9433 SdHoareTripleChecker+Invalid, 4624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1563 IncrementalHoareTripleChecker+Valid, 3057 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-12-16 04:00:45,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3188 Valid, 9433 Invalid, 4624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1563 Valid, 3057 Invalid, 4 Unknown, 0 Unchecked, 14.1s Time] [2021-12-16 04:00:45,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5787 states. [2021-12-16 04:00:45,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5787 to 5197. [2021-12-16 04:00:45,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 3803 states have (on average 1.3807520378648435) internal successors, (5251), 3873 states have internal predecessors, (5251), 1123 states have call successors, (1123), 265 states have call predecessors, (1123), 270 states have return successors, (1143), 1122 states have call predecessors, (1143), 1122 states have call successors, (1143) [2021-12-16 04:00:45,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 7517 transitions. [2021-12-16 04:00:45,165 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 7517 transitions. Word has length 96 [2021-12-16 04:00:45,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:00:45,166 INFO L470 AbstractCegarLoop]: Abstraction has 5197 states and 7517 transitions. [2021-12-16 04:00:45,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-16 04:00:45,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 7517 transitions. [2021-12-16 04:00:45,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-16 04:00:45,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:00:45,173 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:00:45,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 04:00:45,173 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:00:45,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:00:45,174 INFO L85 PathProgramCache]: Analyzing trace with hash 415887363, now seen corresponding path program 1 times [2021-12-16 04:00:45,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:00:45,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467509547] [2021-12-16 04:00:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:00:45,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:00:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:45,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:00:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:45,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:00:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:45,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:00:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:45,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:00:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:45,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 04:00:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:45,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 04:00:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:45,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 04:00:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:45,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 04:00:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:45,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 04:00:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:45,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 04:00:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:45,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 04:00:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:45,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 04:00:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:45,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 04:00:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:45,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:00:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:45,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 04:00:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:45,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-16 04:00:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:45,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-16 04:00:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:45,563 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-12-16 04:00:45,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:00:45,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467509547] [2021-12-16 04:00:45,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467509547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:00:45,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:00:45,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:00:45,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355861330] [2021-12-16 04:00:45,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:00:45,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:00:45,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:00:45,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:00:45,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:00:45,566 INFO L87 Difference]: Start difference. First operand 5197 states and 7517 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 04:00:52,159 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 04:00:54,209 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 04:00:56,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:00:56,347 INFO L93 Difference]: Finished difference Result 13329 states and 19600 transitions. [2021-12-16 04:00:56,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 04:00:56,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2021-12-16 04:00:56,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:00:56,380 INFO L225 Difference]: With dead ends: 13329 [2021-12-16 04:00:56,381 INFO L226 Difference]: Without dead ends: 8156 [2021-12-16 04:00:56,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-16 04:00:56,394 INFO L933 BasicCegarLoop]: 1953 mSDtfsCounter, 1270 mSDsluCounter, 4078 mSDsCounter, 0 mSdLazyCounter, 2748 mSolverCounterSat, 537 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 6031 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 2748 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-12-16 04:00:56,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1421 Valid, 6031 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 2748 Invalid, 2 Unknown, 0 Unchecked, 10.4s Time] [2021-12-16 04:00:56,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8156 states. [2021-12-16 04:00:56,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8156 to 7456. [2021-12-16 04:00:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7456 states, 5495 states have (on average 1.3777979981801638) internal successors, (7571), 5581 states have internal predecessors, (7571), 1550 states have call successors, (1550), 397 states have call predecessors, (1550), 410 states have return successors, (1586), 1549 states have call predecessors, (1586), 1549 states have call successors, (1586) [2021-12-16 04:00:56,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 10707 transitions. [2021-12-16 04:00:56,614 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 10707 transitions. Word has length 144 [2021-12-16 04:00:56,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:00:56,615 INFO L470 AbstractCegarLoop]: Abstraction has 7456 states and 10707 transitions. [2021-12-16 04:00:56,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 04:00:56,626 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 10707 transitions. [2021-12-16 04:00:56,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-16 04:00:56,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:00:56,631 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:00:56,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 04:00:56,632 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:00:56,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:00:56,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2082112872, now seen corresponding path program 1 times [2021-12-16 04:00:56,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:00:56,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542177052] [2021-12-16 04:00:56,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:00:56,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:00:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:56,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:00:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:56,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 04:00:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:56,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 04:00:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:56,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 04:00:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:56,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 04:00:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:56,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 04:00:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:56,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 04:00:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:56,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 04:00:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:56,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 04:00:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:56,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 04:00:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:56,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 04:00:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:56,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 04:00:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:56,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 04:00:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:56,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 04:00:56,983 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 1 [2021-12-16 04:00:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:57,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 04:00:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:57,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 04:00:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:57,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-16 04:00:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:00:57,071 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-16 04:00:57,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:00:57,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542177052] [2021-12-16 04:00:57,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542177052] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:00:57,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:00:57,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 04:00:57,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924340848] [2021-12-16 04:00:57,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:00:57,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 04:00:57,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:00:57,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 04:00:57,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-16 04:00:57,074 INFO L87 Difference]: Start difference. First operand 7456 states and 10707 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 04:01:04,619 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 04:01:06,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:01:08,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []