./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.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 213c19133f8e1eb8e04c1430c89bd3923e29e833639b74dc68815899bbf3f9fa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 22:42:29,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 22:42:29,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 22:42:29,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 22:42:29,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 22:42:29,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 22:42:29,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 22:42:29,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 22:42:29,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 22:42:29,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 22:42:29,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 22:42:29,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 22:42:29,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 22:42:29,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 22:42:29,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 22:42:29,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 22:42:29,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 22:42:29,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 22:42:29,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 22:42:29,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 22:42:29,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 22:42:29,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 22:42:29,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 22:42:29,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 22:42:29,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 22:42:29,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 22:42:29,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 22:42:29,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 22:42:29,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 22:42:29,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 22:42:29,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 22:42:29,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 22:42:29,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 22:42:29,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 22:42:29,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 22:42:29,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 22:42:29,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 22:42:29,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 22:42:29,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 22:42:29,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 22:42:29,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 22:42:29,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 22:42:29,651 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 22:42:29,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 22:42:29,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 22:42:29,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 22:42:29,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 22:42:29,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 22:42:29,653 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 22:42:29,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 22:42:29,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 22:42:29,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 22:42:29,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 22:42:29,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 22:42:29,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 22:42:29,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 22:42:29,655 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 22:42:29,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 22:42:29,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 22:42:29,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 22:42:29,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 22:42:29,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 22:42:29,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 22:42:29,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 22:42:29,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 22:42:29,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 22:42:29,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 22:42:29,657 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 22:42:29,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 22:42:29,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 22:42:29,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 22:42:29,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 213c19133f8e1eb8e04c1430c89bd3923e29e833639b74dc68815899bbf3f9fa [2021-11-22 22:42:29,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 22:42:29,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 22:42:29,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 22:42:29,865 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 22:42:29,865 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 22:42:29,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i [2021-11-22 22:42:29,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619b88e2a/668966549d8f48cf84f134af06da9433/FLAG71cfaec5e [2021-11-22 22:42:30,688 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 22:42:30,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i [2021-11-22 22:42:30,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619b88e2a/668966549d8f48cf84f134af06da9433/FLAG71cfaec5e [2021-11-22 22:42:31,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619b88e2a/668966549d8f48cf84f134af06da9433 [2021-11-22 22:42:31,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 22:42:31,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 22:42:31,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 22:42:31,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 22:42:31,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 22:42:31,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:42:31" (1/1) ... [2021-11-22 22:42:31,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4258a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:42:31, skipping insertion in model container [2021-11-22 22:42:31,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:42:31" (1/1) ... [2021-11-22 22:42:31,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 22:42:31,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 22:42:34,391 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-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i[553894,553907] [2021-11-22 22:42:34,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 22:42:34,709 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 22:42:35,441 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-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i[553894,553907] [2021-11-22 22:42:35,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 22:42:35,611 INFO L208 MainTranslator]: Completed translation [2021-11-22 22:42:35,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:42:35 WrapperNode [2021-11-22 22:42:35,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 22:42:35,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 22:42:35,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 22:42:35,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 22:42:35,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:42:35" (1/1) ... [2021-11-22 22:42:35,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:42:35" (1/1) ... [2021-11-22 22:42:38,290 INFO L137 Inliner]: procedures = 457, calls = 15318, calls flagged for inlining = 1042, calls inlined = 9456, statements flattened = 146579 [2021-11-22 22:42:38,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 22:42:38,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 22:42:38,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 22:42:38,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 22:42:38,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:42:35" (1/1) ... [2021-11-22 22:42:38,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:42:35" (1/1) ... [2021-11-22 22:42:39,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:42:35" (1/1) ... [2021-11-22 22:42:39,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:42:35" (1/1) ... [2021-11-22 22:42:40,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:42:35" (1/1) ... [2021-11-22 22:42:41,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:42:35" (1/1) ... [2021-11-22 22:42:41,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:42:35" (1/1) ... [2021-11-22 22:42:42,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 22:42:42,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 22:42:42,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 22:42:42,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 22:42:42,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:42:35" (1/1) ... [2021-11-22 22:42:42,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 22:42:42,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:42:42,099 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) [2021-11-22 22:42:42,135 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 [2021-11-22 22:42:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_fop_mmap [2021-11-22 22:42:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 22:42:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 22:42:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-22 22:42:42,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-22 22:42:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 22:42:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 22:42:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2021-11-22 22:42:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 22:42:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 22:42:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 22:42:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-22 22:42:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-22 22:42:42,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-22 22:42:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_start_analog_streaming [2021-11-22 22:42:42,155 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_start_analog_streaming [2021-11-22 22:42:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2021-11-22 22:42:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 22:42:42,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 22:42:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_fop_poll [2021-11-22 22:42:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 22:42:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 22:42:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 22:42:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 22:42:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 22:42:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_v4l2_open [2021-11-22 22:42:42,156 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_v4l2_open [2021-11-22 22:42:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 22:42:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_wake_i2c [2021-11-22 22:42:42,157 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_wake_i2c [2021-11-22 22:42:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 22:42:43,112 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 22:42:43,113 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 22:43:56,305 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 22:43:56,384 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 22:43:56,384 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-22 22:43:56,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:43:56 BoogieIcfgContainer [2021-11-22 22:43:56,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 22:43:56,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 22:43:56,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 22:43:56,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 22:43:56,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:42:31" (1/3) ... [2021-11-22 22:43:56,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7441bf55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:43:56, skipping insertion in model container [2021-11-22 22:43:56,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:42:35" (2/3) ... [2021-11-22 22:43:56,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7441bf55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:43:56, skipping insertion in model container [2021-11-22 22:43:56,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:43:56" (3/3) ... [2021-11-22 22:43:56,413 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i [2021-11-22 22:43:56,418 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 22:43:56,418 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1068 error locations. [2021-11-22 22:43:56,520 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 22:43:56,526 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 [2021-11-22 22:43:56,526 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1068 error locations. [2021-11-22 22:43:56,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 31511 states, 30425 states have (on average 1.4639605587510272) internal successors, (44541), 31494 states have internal predecessors, (44541), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-22 22:43:56,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 22:43:56,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:43:56,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:43:56,834 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr542ASSERT_VIOLATIONERROR_FUNCTION === [em28xx_v4l2_openErr0ASSERT_VIOLATIONERROR_FUNCTION, em28xx_v4l2_openErr1ASSERT_VIOLATIONERROR_FUNCTION, em28xx_v4l2_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1065 more)] === [2021-11-22 22:43:56,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:43:56,841 INFO L85 PathProgramCache]: Analyzing trace with hash -609273563, now seen corresponding path program 1 times [2021-11-22 22:43:56,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:43:56,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705712512] [2021-11-22 22:43:56,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:43:56,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:43:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:43:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:43:58,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:43:58,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705712512] [2021-11-22 22:43:58,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705712512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:43:58,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:43:58,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:43:58,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386010338] [2021-11-22 22:43:58,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:43:58,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:43:58,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:43:58,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:43:58,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:43:58,698 INFO L87 Difference]: Start difference. First operand has 31511 states, 30425 states have (on average 1.4639605587510272) internal successors, (44541), 31494 states have internal predecessors, (44541), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 22:43:59,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 22:44:03,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:44:03,246 INFO L93 Difference]: Finished difference Result 61007 states and 87127 transitions. [2021-11-22 22:44:03,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:44:03,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-22 22:44:03,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:44:03,418 INFO L225 Difference]: With dead ends: 61007 [2021-11-22 22:44:03,419 INFO L226 Difference]: Without dead ends: 29483 [2021-11-22 22:44:03,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:44:03,492 INFO L933 BasicCegarLoop]: 40989 mSDtfsCounter, 33577 mSDsluCounter, 5673 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 1049 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33577 SdHoareTripleChecker+Valid, 46662 SdHoareTripleChecker+Invalid, 3149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1049 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-22 22:44:03,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33577 Valid, 46662 Invalid, 3149 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1049 Valid, 2100 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-22 22:44:03,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29483 states. [2021-11-22 22:44:04,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29483 to 29483. [2021-11-22 22:44:04,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29483 states, 28870 states have (on average 1.4343262902667129) internal successors, (41409), 29466 states have internal predecessors, (41409), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-22 22:44:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29483 states to 29483 states and 41433 transitions. [2021-11-22 22:44:04,184 INFO L78 Accepts]: Start accepts. Automaton has 29483 states and 41433 transitions. Word has length 8 [2021-11-22 22:44:04,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:44:04,184 INFO L470 AbstractCegarLoop]: Abstraction has 29483 states and 41433 transitions. [2021-11-22 22:44:04,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 22:44:04,187 INFO L276 IsEmpty]: Start isEmpty. Operand 29483 states and 41433 transitions. [2021-11-22 22:44:04,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 22:44:04,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:44:04,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:44:04,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 22:44:04,189 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr543ASSERT_VIOLATIONERROR_FUNCTION === [em28xx_v4l2_openErr0ASSERT_VIOLATIONERROR_FUNCTION, em28xx_v4l2_openErr1ASSERT_VIOLATIONERROR_FUNCTION, em28xx_v4l2_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1065 more)] === [2021-11-22 22:44:04,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:44:04,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1707521567, now seen corresponding path program 1 times [2021-11-22 22:44:04,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:44:04,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231255556] [2021-11-22 22:44:04,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:44:04,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:44:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:44:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:44:05,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:44:05,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231255556] [2021-11-22 22:44:05,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231255556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:44:05,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:44:05,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:44:05,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140408304] [2021-11-22 22:44:05,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:44:05,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:44:05,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:44:05,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:44:05,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:44:05,245 INFO L87 Difference]: Start difference. First operand 29483 states and 41433 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 22:44:06,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 22:44:06,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:44:06,892 INFO L93 Difference]: Finished difference Result 29483 states and 41433 transitions. [2021-11-22 22:44:06,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:44:06,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 22:44:06,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:44:06,960 INFO L225 Difference]: With dead ends: 29483 [2021-11-22 22:44:06,961 INFO L226 Difference]: Without dead ends: 29481 [2021-11-22 22:44:06,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:44:06,985 INFO L933 BasicCegarLoop]: 41430 mSDtfsCounter, 41424 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41424 SdHoareTripleChecker+Valid, 41430 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:44:06,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41424 Valid, 41430 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-22 22:44:07,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29481 states. [2021-11-22 22:44:07,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29481 to 29481. [2021-11-22 22:44:07,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29481 states, 28869 states have (on average 1.434306695763622) internal successors, (41407), 29464 states have internal predecessors, (41407), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-22 22:44:07,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29481 states to 29481 states and 41431 transitions. [2021-11-22 22:44:07,631 INFO L78 Accepts]: Start accepts. Automaton has 29481 states and 41431 transitions. Word has length 9 [2021-11-22 22:44:07,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:44:07,632 INFO L470 AbstractCegarLoop]: Abstraction has 29481 states and 41431 transitions. [2021-11-22 22:44:07,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 22:44:07,632 INFO L276 IsEmpty]: Start isEmpty. Operand 29481 states and 41431 transitions. [2021-11-22 22:44:07,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 22:44:07,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:44:07,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:44:07,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 22:44:07,633 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr544ASSERT_VIOLATIONERROR_FUNCTION === [em28xx_v4l2_openErr0ASSERT_VIOLATIONERROR_FUNCTION, em28xx_v4l2_openErr1ASSERT_VIOLATIONERROR_FUNCTION, em28xx_v4l2_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1065 more)] === [2021-11-22 22:44:07,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:44:07,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1393471312, now seen corresponding path program 1 times [2021-11-22 22:44:07,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:44:07,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531631203] [2021-11-22 22:44:07,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:44:07,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:44:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:44:08,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:44:08,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:44:08,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531631203] [2021-11-22 22:44:08,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531631203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:44:08,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:44:08,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:44:08,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072927263] [2021-11-22 22:44:08,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:44:08,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:44:08,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:44:08,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:44:08,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:44:08,545 INFO L87 Difference]: Start difference. First operand 29481 states and 41431 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 22:44:09,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 22:44:10,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:44:10,162 INFO L93 Difference]: Finished difference Result 29481 states and 41431 transitions. [2021-11-22 22:44:10,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:44:10,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-22 22:44:10,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:44:10,225 INFO L225 Difference]: With dead ends: 29481 [2021-11-22 22:44:10,225 INFO L226 Difference]: Without dead ends: 29479 [2021-11-22 22:44:10,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:44:10,242 INFO L933 BasicCegarLoop]: 41428 mSDtfsCounter, 41421 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41421 SdHoareTripleChecker+Valid, 41428 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:44:10,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41421 Valid, 41428 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-22 22:44:10,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29479 states. [2021-11-22 22:44:10,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29479 to 29479. [2021-11-22 22:44:10,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29479 states, 28868 states have (on average 1.4342870999030068) internal successors, (41405), 29462 states have internal predecessors, (41405), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-22 22:44:10,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29479 states to 29479 states and 41429 transitions. [2021-11-22 22:44:10,937 INFO L78 Accepts]: Start accepts. Automaton has 29479 states and 41429 transitions. Word has length 10 [2021-11-22 22:44:10,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:44:10,937 INFO L470 AbstractCegarLoop]: Abstraction has 29479 states and 41429 transitions. [2021-11-22 22:44:10,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 22:44:10,937 INFO L276 IsEmpty]: Start isEmpty. Operand 29479 states and 41429 transitions. [2021-11-22 22:44:10,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 22:44:10,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:44:10,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:44:10,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 22:44:10,938 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr545ASSERT_VIOLATIONERROR_FUNCTION === [em28xx_v4l2_openErr0ASSERT_VIOLATIONERROR_FUNCTION, em28xx_v4l2_openErr1ASSERT_VIOLATIONERROR_FUNCTION, em28xx_v4l2_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1065 more)] === [2021-11-22 22:44:10,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:44:10,940 INFO L85 PathProgramCache]: Analyzing trace with hash -247847988, now seen corresponding path program 1 times [2021-11-22 22:44:10,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:44:10,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996429611] [2021-11-22 22:44:10,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:44:10,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:44:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:44:11,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:44:11,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:44:11,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996429611] [2021-11-22 22:44:11,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996429611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:44:11,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:44:11,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:44:11,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189198315] [2021-11-22 22:44:11,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:44:11,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:44:11,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:44:11,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:44:11,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:44:11,766 INFO L87 Difference]: Start difference. First operand 29479 states and 41429 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 22:44:13,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:44:13,798 INFO L93 Difference]: Finished difference Result 85941 states and 120936 transitions. [2021-11-22 22:44:13,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:44:13,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-22 22:44:13,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:44:13,935 INFO L225 Difference]: With dead ends: 85941 [2021-11-22 22:44:13,935 INFO L226 Difference]: Without dead ends: 56465 [2021-11-22 22:44:13,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:44:14,003 INFO L933 BasicCegarLoop]: 51598 mSDtfsCounter, 38096 mSDsluCounter, 41351 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38096 SdHoareTripleChecker+Valid, 92949 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 22:44:14,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38096 Valid, 92949 Invalid, 52 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 22:44:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56465 states. [2021-11-22 22:44:15,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56465 to 55413. [2021-11-22 22:44:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55413 states, 54788 states have (on average 1.4404431627363656) internal successors, (78919), 55383 states have internal predecessors, (78919), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (29), 21 states have call predecessors, (29), 21 states have call successors, (29) [2021-11-22 22:44:15,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55413 states to 55413 states and 78969 transitions. [2021-11-22 22:44:15,386 INFO L78 Accepts]: Start accepts. Automaton has 55413 states and 78969 transitions. Word has length 11 [2021-11-22 22:44:15,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:44:15,386 INFO L470 AbstractCegarLoop]: Abstraction has 55413 states and 78969 transitions. [2021-11-22 22:44:15,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 22:44:15,387 INFO L276 IsEmpty]: Start isEmpty. Operand 55413 states and 78969 transitions. [2021-11-22 22:44:15,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 22:44:15,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:44:15,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:44:15,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 22:44:15,388 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr546ASSERT_VIOLATIONERROR_FUNCTION === [em28xx_v4l2_openErr0ASSERT_VIOLATIONERROR_FUNCTION, em28xx_v4l2_openErr1ASSERT_VIOLATIONERROR_FUNCTION, em28xx_v4l2_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1065 more)] === [2021-11-22 22:44:15,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:44:15,388 INFO L85 PathProgramCache]: Analyzing trace with hash 906736699, now seen corresponding path program 1 times [2021-11-22 22:44:15,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:44:15,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378682522] [2021-11-22 22:44:15,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:44:15,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:44:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:44:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:44:16,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:44:16,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378682522] [2021-11-22 22:44:16,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378682522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:44:16,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:44:16,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:44:16,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117423824] [2021-11-22 22:44:16,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:44:16,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:44:16,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:44:16,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:44:16,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:44:16,329 INFO L87 Difference]: Start difference. First operand 55413 states and 78969 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 22:44:17,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:44:17,938 INFO L93 Difference]: Finished difference Result 55413 states and 78969 transitions. [2021-11-22 22:44:17,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:44:17,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-22 22:44:17,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:44:18,045 INFO L225 Difference]: With dead ends: 55413 [2021-11-22 22:44:18,046 INFO L226 Difference]: Without dead ends: 55411 [2021-11-22 22:44:18,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:44:18,059 INFO L933 BasicCegarLoop]: 41426 mSDtfsCounter, 41417 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41417 SdHoareTripleChecker+Valid, 41426 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 22:44:18,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41417 Valid, 41426 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 22:44:18,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55411 states. [2021-11-22 22:44:19,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55411 to 55411. [2021-11-22 22:44:19,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55411 states, 54787 states have (on average 1.4404329494223083) internal successors, (78917), 55381 states have internal predecessors, (78917), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (29), 21 states have call predecessors, (29), 21 states have call successors, (29) [2021-11-22 22:44:19,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55411 states to 55411 states and 78967 transitions. [2021-11-22 22:44:19,273 INFO L78 Accepts]: Start accepts. Automaton has 55411 states and 78967 transitions. Word has length 12 [2021-11-22 22:44:19,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:44:19,274 INFO L470 AbstractCegarLoop]: Abstraction has 55411 states and 78967 transitions. [2021-11-22 22:44:19,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 22:44:19,275 INFO L276 IsEmpty]: Start isEmpty. Operand 55411 states and 78967 transitions. [2021-11-22 22:44:19,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 22:44:19,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:44:19,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:44:19,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 22:44:19,278 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr547ASSERT_VIOLATIONERROR_FUNCTION === [em28xx_v4l2_openErr0ASSERT_VIOLATIONERROR_FUNCTION, em28xx_v4l2_openErr1ASSERT_VIOLATIONERROR_FUNCTION, em28xx_v4l2_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1065 more)] === [2021-11-22 22:44:19,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:44:19,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1955843657, now seen corresponding path program 1 times [2021-11-22 22:44:19,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:44:19,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780701585] [2021-11-22 22:44:19,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:44:19,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:44:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:44:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:44:20,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:44:20,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780701585] [2021-11-22 22:44:20,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780701585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:44:20,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:44:20,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:44:20,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565001473] [2021-11-22 22:44:20,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:44:20,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:44:20,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:44:20,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:44:20,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:44:20,160 INFO L87 Difference]: Start difference. First operand 55411 states and 78967 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 22:44:22,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:44:22,018 INFO L93 Difference]: Finished difference Result 55411 states and 78967 transitions. [2021-11-22 22:44:22,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:44:22,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-22 22:44:22,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:44:22,144 INFO L225 Difference]: With dead ends: 55411 [2021-11-22 22:44:22,144 INFO L226 Difference]: Without dead ends: 55409 [2021-11-22 22:44:22,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:44:22,166 INFO L933 BasicCegarLoop]: 41424 mSDtfsCounter, 41414 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41414 SdHoareTripleChecker+Valid, 41424 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:44:22,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41414 Valid, 41424 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-22 22:44:22,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55409 states. [2021-11-22 22:44:23,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55409 to 55409. [2021-11-22 22:44:23,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55409 states, 54786 states have (on average 1.440422735735407) internal successors, (78915), 55379 states have internal predecessors, (78915), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (29), 21 states have call predecessors, (29), 21 states have call successors, (29) [2021-11-22 22:44:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55409 states to 55409 states and 78965 transitions. [2021-11-22 22:44:23,506 INFO L78 Accepts]: Start accepts. Automaton has 55409 states and 78965 transitions. Word has length 13 [2021-11-22 22:44:23,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:44:23,507 INFO L470 AbstractCegarLoop]: Abstraction has 55409 states and 78965 transitions. [2021-11-22 22:44:23,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 22:44:23,507 INFO L276 IsEmpty]: Start isEmpty. Operand 55409 states and 78965 transitions. [2021-11-22 22:44:23,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 22:44:23,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:44:23,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:44:23,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 22:44:23,508 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr548ASSERT_VIOLATIONERROR_FUNCTION === [em28xx_v4l2_openErr0ASSERT_VIOLATIONERROR_FUNCTION, em28xx_v4l2_openErr1ASSERT_VIOLATIONERROR_FUNCTION, em28xx_v4l2_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1065 more)] === [2021-11-22 22:44:23,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:44:23,509 INFO L85 PathProgramCache]: Analyzing trace with hash -501521466, now seen corresponding path program 1 times [2021-11-22 22:44:23,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:44:23,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57095961] [2021-11-22 22:44:23,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:44:23,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:44:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:44:24,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:44:24,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:44:24,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57095961] [2021-11-22 22:44:24,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57095961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:44:24,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:44:24,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:44:24,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202362776] [2021-11-22 22:44:24,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:44:24,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:44:24,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:44:24,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:44:24,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:44:24,177 INFO L87 Difference]: Start difference. First operand 55409 states and 78965 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 22:44:25,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:44:25,963 INFO L93 Difference]: Finished difference Result 55409 states and 78965 transitions. [2021-11-22 22:44:26,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:44:26,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-22 22:44:26,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:44:26,119 INFO L225 Difference]: With dead ends: 55409 [2021-11-22 22:44:26,120 INFO L226 Difference]: Without dead ends: 55399 [2021-11-22 22:44:26,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:44:26,141 INFO L933 BasicCegarLoop]: 41423 mSDtfsCounter, 41411 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41411 SdHoareTripleChecker+Valid, 41423 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 22:44:26,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41411 Valid, 41423 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 22:44:26,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55399 states. [2021-11-22 22:44:27,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55399 to 55399. [2021-11-22 22:44:27,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55399 states, 54777 states have (on average 1.440422074958468) internal successors, (78902), 55369 states have internal predecessors, (78902), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (29), 21 states have call predecessors, (29), 21 states have call successors, (29) [2021-11-22 22:44:27,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55399 states to 55399 states and 78952 transitions. [2021-11-22 22:44:27,521 INFO L78 Accepts]: Start accepts. Automaton has 55399 states and 78952 transitions. Word has length 14 [2021-11-22 22:44:27,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:44:27,521 INFO L470 AbstractCegarLoop]: Abstraction has 55399 states and 78952 transitions. [2021-11-22 22:44:27,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 22:44:27,521 INFO L276 IsEmpty]: Start isEmpty. Operand 55399 states and 78952 transitions. [2021-11-22 22:44:27,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 22:44:27,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:44:27,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:44:27,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 22:44:27,524 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr246ASSERT_VIOLATIONERROR_FUNCTION === [em28xx_v4l2_openErr0ASSERT_VIOLATIONERROR_FUNCTION, em28xx_v4l2_openErr1ASSERT_VIOLATIONERROR_FUNCTION, em28xx_v4l2_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1065 more)] === [2021-11-22 22:44:27,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:44:27,524 INFO L85 PathProgramCache]: Analyzing trace with hash -676166710, now seen corresponding path program 1 times [2021-11-22 22:44:27,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:44:27,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653454666] [2021-11-22 22:44:27,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:44:27,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:44:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:44:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:44:28,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:44:28,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653454666] [2021-11-22 22:44:28,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653454666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:44:28,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:44:28,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:44:28,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749859585] [2021-11-22 22:44:28,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:44:28,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:44:28,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:44:28,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:44:28,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:44:28,313 INFO L87 Difference]: Start difference. First operand 55399 states and 78952 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)