./Ultimate.py --spec ../../sv-benchmarks/c/Systems_DeviceDriversLinux64_ReachSafety.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point_true-unreach-call.cil.out.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point_true-unreach-call.cil.out.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3a7667ce5c93eeac4f22f6c3a45c95f53de299aa .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point_true-unreach-call.cil.out.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3a7667ce5c93eeac4f22f6c3a45c95f53de299aa .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 16:14:19,669 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:14:19,670 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:14:19,678 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:14:19,678 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:14:19,679 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:14:19,680 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:14:19,681 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:14:19,682 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:14:19,683 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:14:19,684 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:14:19,684 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:14:19,684 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:14:19,685 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:14:19,686 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:14:19,686 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:14:19,687 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:14:19,688 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:14:19,689 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:14:19,691 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:14:19,691 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:14:19,692 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:14:19,694 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:14:19,694 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:14:19,694 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:14:19,695 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:14:19,696 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:14:19,696 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:14:19,697 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:14:19,697 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:14:19,698 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:14:19,698 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:14:19,698 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:14:19,698 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:14:19,699 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:14:19,700 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:14:19,700 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-18 16:14:19,710 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:14:19,710 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:14:19,711 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:14:19,711 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:14:19,711 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:14:19,711 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:14:19,711 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:14:19,711 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 16:14:19,712 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:14:19,712 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:14:19,712 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-18 16:14:19,712 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 16:14:19,712 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 16:14:19,712 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:14:19,713 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:14:19,713 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:14:19,713 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:14:19,713 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:14:19,714 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:14:19,714 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:14:19,714 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:14:19,714 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:14:19,714 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:14:19,714 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:14:19,714 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:14:19,715 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:14:19,715 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:14:19,715 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:14:19,715 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:14:19,715 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:14:19,715 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:14:19,716 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 16:14:19,716 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:14:19,716 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:14:19,716 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 16:14:19,716 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-18 16:14:19,716 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan 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 -> 3a7667ce5c93eeac4f22f6c3a45c95f53de299aa [2018-11-18 16:14:19,740 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:14:19,749 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:14:19,751 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:14:19,753 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:14:19,753 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:14:19,753 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point_true-unreach-call.cil.out.c [2018-11-18 16:14:19,798 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/data/eb21632c5/d79ecbd477bd419d846b8ea292a884a4/FLAGa463c0d3c [2018-11-18 16:14:20,410 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:14:20,411 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point_true-unreach-call.cil.out.c [2018-11-18 16:14:20,439 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/data/eb21632c5/d79ecbd477bd419d846b8ea292a884a4/FLAGa463c0d3c [2018-11-18 16:14:20,826 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/data/eb21632c5/d79ecbd477bd419d846b8ea292a884a4 [2018-11-18 16:14:20,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:14:20,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:14:20,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:14:20,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:14:20,831 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:14:20,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:14:20" (1/1) ... [2018-11-18 16:14:20,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48eb5d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:20, skipping insertion in model container [2018-11-18 16:14:20,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:14:20" (1/1) ... [2018-11-18 16:14:20,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:14:20,911 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:14:23,053 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:14:23,098 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:14:23,656 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:14:23,780 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:14:23,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23 WrapperNode [2018-11-18 16:14:23,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:14:23,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:14:23,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:14:23,782 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:14:23,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:14:23,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:14:23,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:14:23,844 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:14:23,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... [2018-11-18 16:14:23,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:14:23,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:14:23,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:14:23,992 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:14:23,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:14:24,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_uninit_3 [2018-11-18 16:14:24,036 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_fir_interrupt [2018-11-18 16:14:24,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_fir_interrupt [2018-11-18 16:14:24,036 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_fir_change_speed [2018-11-18 16:14:24,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_fir_change_speed [2018-11-18 16:14:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure async_unwrap_char [2018-11-18 16:14:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___platform_driver_register_37 [2018-11-18 16:14:24,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___platform_driver_register_37 [2018-11-18 16:14:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_uninit_2 [2018-11-18 16:14:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2018-11-18 16:14:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2018-11-18 16:14:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_4 [2018-11-18 16:14:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2018-11-18 16:14:24,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2018-11-18 16:14:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2018-11-18 16:14:24,038 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2018-11-18 16:14:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure irda_device_txqueue_empty [2018-11-18 16:14:24,038 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_device_txqueue_empty [2018-11-18 16:14:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2018-11-18 16:14:24,038 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2018-11-18 16:14:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure irda_setup_dma [2018-11-18 16:14:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure irda_qos_bits_to_value [2018-11-18 16:14:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2018-11-18 16:14:24,039 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2018-11-18 16:14:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_setup [2018-11-18 16:14:24,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_setup [2018-11-18 16:14:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2018-11-18 16:14:24,039 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2018-11-18 16:14:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2018-11-18 16:14:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_sir_interrupt [2018-11-18 16:14:24,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_sir_interrupt [2018-11-18 16:14:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2018-11-18 16:14:24,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2018-11-18 16:14:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_dma_receive_complete [2018-11-18 16:14:24,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_dma_receive_complete [2018-11-18 16:14:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_sir_change_speed [2018-11-18 16:14:24,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_sir_change_speed [2018-11-18 16:14:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure irda_init_max_qos_capabilies [2018-11-18 16:14:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_close [2018-11-18 16:14:24,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_close [2018-11-18 16:14:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2018-11-18 16:14:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_is_receiving [2018-11-18 16:14:24,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_is_receiving [2018-11-18 16:14:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_interrupt [2018-11-18 16:14:24,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_interrupt [2018-11-18 16:14:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2018-11-18 16:14:24,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2018-11-18 16:14:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2018-11-18 16:14:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2018-11-18 16:14:24,041 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2018-11-18 16:14:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_init_2 [2018-11-18 16:14:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_init_3 [2018-11-18 16:14:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-11-18 16:14:24,042 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-11-18 16:14:24,042 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2018-11-18 16:14:24,042 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2018-11-18 16:14:24,042 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_suspend [2018-11-18 16:14:24,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_suspend [2018-11-18 16:14:24,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_46 [2018-11-18 16:14:24,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_46 [2018-11-18 16:14:24,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_45 [2018-11-18 16:14:24,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_45 [2018-11-18 16:14:24,043 INFO L130 BoogieDeclarations]: Found specification of procedure __preempt_count_sub [2018-11-18 16:14:24,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __preempt_count_sub [2018-11-18 16:14:24,043 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2018-11-18 16:14:24,043 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2018-11-18 16:14:24,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:14:24,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:14:24,043 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2018-11-18 16:14:24,043 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2018-11-18 16:14:24,043 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2018-11-18 16:14:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure switch_bank [2018-11-18 16:14:24,044 INFO L138 BoogieDeclarations]: Found implementation of procedure switch_bank [2018-11-18 16:14:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2018-11-18 16:14:24,044 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2018-11-18 16:14:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2018-11-18 16:14:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2018-11-18 16:14:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2018-11-18 16:14:24,044 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2018-11-18 16:14:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2018-11-18 16:14:24,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2018-11-18 16:14:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lock_release [2018-11-18 16:14:24,045 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lock_release [2018-11-18 16:14:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_init_53 [2018-11-18 16:14:24,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_init_53 [2018-11-18 16:14:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 16:14:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2018-11-18 16:14:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2018-11-18 16:14:24,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2018-11-18 16:14:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_remove_4 [2018-11-18 16:14:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_us_delta [2018-11-18 16:14:24,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_us_delta [2018-11-18 16:14:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2018-11-18 16:14:24,046 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2018-11-18 16:14:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_sir_hard_xmit [2018-11-18 16:14:24,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_sir_hard_xmit [2018-11-18 16:14:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_dma_receive [2018-11-18 16:14:24,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_dma_receive [2018-11-18 16:14:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_init_43 [2018-11-18 16:14:24,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_init_43 [2018-11-18 16:14:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2018-11-18 16:14:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_divns [2018-11-18 16:14:24,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_divns [2018-11-18 16:14:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 16:14:24,047 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2018-11-18 16:14:24,047 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_to_us [2018-11-18 16:14:24,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_to_us [2018-11-18 16:14:24,047 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_net_ioctl [2018-11-18 16:14:24,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_net_ioctl [2018-11-18 16:14:24,047 INFO L130 BoogieDeclarations]: Found specification of procedure SetCOMInterrupts [2018-11-18 16:14:24,047 INFO L138 BoogieDeclarations]: Found implementation of procedure SetCOMInterrupts [2018-11-18 16:14:24,047 INFO L130 BoogieDeclarations]: Found specification of procedure __platform_driver_register [2018-11-18 16:14:24,047 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2018-11-18 16:14:24,047 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2018-11-18 16:14:24,047 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2018-11-18 16:14:24,048 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2018-11-18 16:14:24,048 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2018-11-18 16:14:24,048 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2018-11-18 16:14:24,048 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2018-11-18 16:14:24,048 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2018-11-18 16:14:24,048 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_change_dongle_speed [2018-11-18 16:14:24,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_change_dongle_speed [2018-11-18 16:14:24,048 INFO L130 BoogieDeclarations]: Found specification of procedure SIR2FIR [2018-11-18 16:14:24,048 INFO L138 BoogieDeclarations]: Found implementation of procedure SIR2FIR [2018-11-18 16:14:24,048 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_dma_xmit_complete [2018-11-18 16:14:24,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_dma_xmit_complete [2018-11-18 16:14:24,049 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma [2018-11-18 16:14:24,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_4 [2018-11-18 16:14:24,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_44 [2018-11-18 16:14:24,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_44 [2018-11-18 16:14:24,050 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2018-11-18 16:14:24,050 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2018-11-18 16:14:24,050 INFO L130 BoogieDeclarations]: Found specification of procedure async_wrap_skb [2018-11-18 16:14:24,050 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2018-11-18 16:14:24,050 INFO L130 BoogieDeclarations]: Found specification of procedure irda_get_mtt [2018-11-18 16:14:24,050 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_get_mtt [2018-11-18 16:14:24,050 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2018-11-18 16:14:24,050 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2018-11-18 16:14:24,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 16:14:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_12 [2018-11-18 16:14:24,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_12 [2018-11-18 16:14:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_9 [2018-11-18 16:14:24,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_9 [2018-11-18 16:14:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_cleanup [2018-11-18 16:14:24,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_cleanup [2018-11-18 16:14:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2018-11-18 16:14:24,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2018-11-18 16:14:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2018-11-18 16:14:24,093 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2018-11-18 16:14:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 16:14:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_net_close [2018-11-18 16:14:24,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_net_close [2018-11-18 16:14:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2018-11-18 16:14:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2018-11-18 16:14:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 16:14:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_net_device_ops_3 [2018-11-18 16:14:24,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_net_device_ops_3 [2018-11-18 16:14:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_sir_write_wakeup [2018-11-18 16:14:24,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_sir_write_wakeup [2018-11-18 16:14:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2018-11-18 16:14:24,095 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2018-11-18 16:14:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2018-11-18 16:14:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_read_dongle_id [2018-11-18 16:14:24,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_read_dongle_id [2018-11-18 16:14:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_platform_driver_unregister_38 [2018-11-18 16:14:24,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_platform_driver_unregister_38 [2018-11-18 16:14:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_dma_xmit [2018-11-18 16:14:24,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_dma_xmit [2018-11-18 16:14:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_platform_driver_unregister_39 [2018-11-18 16:14:24,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_platform_driver_unregister_39 [2018-11-18 16:14:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2018-11-18 16:14:24,096 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2018-11-18 16:14:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2018-11-18 16:14:24,096 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2018-11-18 16:14:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2018-11-18 16:14:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2018-11-18 16:14:24,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2018-11-18 16:14:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2018-11-18 16:14:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure irda_get_next_speed [2018-11-18 16:14:24,096 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_get_next_speed [2018-11-18 16:14:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_net_open [2018-11-18 16:14:24,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_net_open [2018-11-18 16:14:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2018-11-18 16:14:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure qdisc_all_tx_empty [2018-11-18 16:14:24,097 INFO L138 BoogieDeclarations]: Found implementation of procedure qdisc_all_tx_empty [2018-11-18 16:14:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 16:14:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_42 [2018-11-18 16:14:24,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_42 [2018-11-18 16:14:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2018-11-18 16:14:24,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2018-11-18 16:14:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_sir_receive [2018-11-18 16:14:24,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_sir_receive [2018-11-18 16:14:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2018-11-18 16:14:24,098 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2018-11-18 16:14:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2018-11-18 16:14:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2018-11-18 16:14:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2018-11-18 16:14:24,098 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2018-11-18 16:14:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2018-11-18 16:14:24,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2018-11-18 16:14:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2018-11-18 16:14:24,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2018-11-18 16:14:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_sir_write [2018-11-18 16:14:24,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_sir_write [2018-11-18 16:14:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure irlap_close [2018-11-18 16:14:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2018-11-18 16:14:24,099 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2018-11-18 16:14:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2018-11-18 16:14:24,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2018-11-18 16:14:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_irdadev [2018-11-18 16:14:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2018-11-18 16:14:24,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2018-11-18 16:14:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_open [2018-11-18 16:14:24,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_open [2018-11-18 16:14:24,099 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_init [2018-11-18 16:14:24,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_init [2018-11-18 16:14:24,100 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2018-11-18 16:14:24,100 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:14:24,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:14:24,100 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2018-11-18 16:14:24,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 16:14:24,100 INFO L130 BoogieDeclarations]: Found specification of procedure disable_dma [2018-11-18 16:14:24,100 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_dma [2018-11-18 16:14:24,100 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2018-11-18 16:14:24,100 INFO L130 BoogieDeclarations]: Found specification of procedure __preempt_count_add [2018-11-18 16:14:24,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __preempt_count_add [2018-11-18 16:14:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_fir_hard_xmit [2018-11-18 16:14:24,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_fir_hard_xmit [2018-11-18 16:14:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2018-11-18 16:14:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___netdev_alloc_skb_31 [2018-11-18 16:14:24,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___netdev_alloc_skb_31 [2018-11-18 16:14:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2018-11-18 16:14:24,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2018-11-18 16:14:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_platform_driver_init_4 [2018-11-18 16:14:24,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_platform_driver_init_4 [2018-11-18 16:14:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure FIR2SIR [2018-11-18 16:14:24,101 INFO L138 BoogieDeclarations]: Found implementation of procedure FIR2SIR [2018-11-18 16:14:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2018-11-18 16:14:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2018-11-18 16:14:24,102 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2018-11-18 16:14:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lock_acquire [2018-11-18 16:14:24,102 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lock_acquire [2018-11-18 16:14:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_probe_53 [2018-11-18 16:14:24,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_probe_53 [2018-11-18 16:14:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_41 [2018-11-18 16:14:24,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_41 [2018-11-18 16:14:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2018-11-18 16:14:24,102 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2018-11-18 16:14:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_5 [2018-11-18 16:14:24,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_5 [2018-11-18 16:14:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_change_speed [2018-11-18 16:14:24,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_change_speed [2018-11-18 16:14:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_43 [2018-11-18 16:14:24,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_43 [2018-11-18 16:14:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2018-11-18 16:14:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2018-11-18 16:14:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure request_dma [2018-11-18 16:14:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2018-11-18 16:14:24,103 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2018-11-18 16:14:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2018-11-18 16:14:24,104 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2018-11-18 16:14:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_40 [2018-11-18 16:14:24,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_40 [2018-11-18 16:14:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2018-11-18 16:14:24,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2018-11-18 16:14:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2018-11-18 16:14:24,104 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2018-11-18 16:14:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2018-11-18 16:14:24,104 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2018-11-18 16:14:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2018-11-18 16:14:24,104 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2018-11-18 16:14:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2018-11-18 16:14:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_resume [2018-11-18 16:14:24,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_resume [2018-11-18 16:14:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2018-11-18 16:14:24,105 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2018-11-18 16:14:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2018-11-18 16:14:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2018-11-18 16:14:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2018-11-18 16:14:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2018-11-18 16:14:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_to_linear_data [2018-11-18 16:14:24,105 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_to_linear_data [2018-11-18 16:14:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure irlap_open [2018-11-18 16:14:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure irda_device_set_media_busy [2018-11-18 16:14:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:14:24,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:14:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2018-11-18 16:14:24,106 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2018-11-18 16:14:39,582 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:14:39,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:14:39 BoogieIcfgContainer [2018-11-18 16:14:39,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:14:39,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:14:39,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:14:39,586 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:14:39,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:14:20" (1/3) ... [2018-11-18 16:14:39,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37dc8b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:14:39, skipping insertion in model container [2018-11-18 16:14:39,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:23" (2/3) ... [2018-11-18 16:14:39,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37dc8b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:14:39, skipping insertion in model container [2018-11-18 16:14:39,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:14:39" (3/3) ... [2018-11-18 16:14:39,588 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point_true-unreach-call.cil.out.c [2018-11-18 16:14:39,594 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:14:39,599 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:14:39,611 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:14:39,638 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:14:39,638 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:14:39,638 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:14:39,638 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:14:39,638 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:14:39,638 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:14:39,639 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:14:39,639 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:14:39,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states. [2018-11-18 16:14:39,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-11-18 16:14:39,687 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:14:39,688 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:14:39,690 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:14:39,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:14:39,696 INFO L82 PathProgramCache]: Analyzing trace with hash 582300684, now seen corresponding path program 1 times [2018-11-18 16:14:39,698 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:14:39,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:14:39,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:14:39,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:14:39,753 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:14:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:14:40,946 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-11-18 16:14:40,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:14:40,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:14:40,948 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:14:40,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:14:40,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:14:40,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:14:40,965 INFO L87 Difference]: Start difference. First operand 1489 states. Second operand 5 states. [2018-11-18 16:14:41,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:14:41,256 INFO L93 Difference]: Finished difference Result 4419 states and 6407 transitions. [2018-11-18 16:14:41,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 16:14:41,257 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2018-11-18 16:14:41,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:14:41,282 INFO L225 Difference]: With dead ends: 4419 [2018-11-18 16:14:41,282 INFO L226 Difference]: Without dead ends: 2855 [2018-11-18 16:14:41,292 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:14:41,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2018-11-18 16:14:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2842. [2018-11-18 16:14:41,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2842 states. [2018-11-18 16:14:41,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 4105 transitions. [2018-11-18 16:14:41,492 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 4105 transitions. Word has length 227 [2018-11-18 16:14:41,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:14:41,493 INFO L480 AbstractCegarLoop]: Abstraction has 2842 states and 4105 transitions. [2018-11-18 16:14:41,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:14:41,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 4105 transitions. [2018-11-18 16:14:41,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-11-18 16:14:41,507 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:14:41,508 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:14:41,508 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:14:41,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:14:41,508 INFO L82 PathProgramCache]: Analyzing trace with hash -548672846, now seen corresponding path program 1 times [2018-11-18 16:14:41,508 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:14:41,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:14:41,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:14:41,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:14:41,514 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:14:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:14:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-11-18 16:14:42,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:14:42,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:14:42,111 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:14:42,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:14:42,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:14:42,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:14:42,113 INFO L87 Difference]: Start difference. First operand 2842 states and 4105 transitions. Second operand 5 states. [2018-11-18 16:14:42,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:14:42,381 INFO L93 Difference]: Finished difference Result 8496 states and 12353 transitions. [2018-11-18 16:14:42,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 16:14:42,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2018-11-18 16:14:42,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:14:42,408 INFO L225 Difference]: With dead ends: 8496 [2018-11-18 16:14:42,408 INFO L226 Difference]: Without dead ends: 5679 [2018-11-18 16:14:42,420 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:14:42,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5679 states. [2018-11-18 16:14:42,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5679 to 5658. [2018-11-18 16:14:42,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5658 states. [2018-11-18 16:14:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5658 states to 5658 states and 8209 transitions. [2018-11-18 16:14:42,653 INFO L78 Accepts]: Start accepts. Automaton has 5658 states and 8209 transitions. Word has length 228 [2018-11-18 16:14:42,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:14:42,654 INFO L480 AbstractCegarLoop]: Abstraction has 5658 states and 8209 transitions. [2018-11-18 16:14:42,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:14:42,654 INFO L276 IsEmpty]: Start isEmpty. Operand 5658 states and 8209 transitions. [2018-11-18 16:14:42,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-11-18 16:14:42,669 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:14:42,670 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:14:42,670 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:14:42,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:14:42,670 INFO L82 PathProgramCache]: Analyzing trace with hash -608684567, now seen corresponding path program 1 times [2018-11-18 16:14:42,670 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:14:42,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:14:42,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:14:42,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:14:42,673 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:14:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:14:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-11-18 16:14:43,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:14:43,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:14:43,193 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:14:43,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:14:43,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:14:43,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:14:43,194 INFO L87 Difference]: Start difference. First operand 5658 states and 8209 transitions. Second operand 5 states. [2018-11-18 16:14:43,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:14:43,631 INFO L93 Difference]: Finished difference Result 16967 states and 24769 transitions. [2018-11-18 16:14:43,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 16:14:43,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2018-11-18 16:14:43,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:14:43,686 INFO L225 Difference]: With dead ends: 16967 [2018-11-18 16:14:43,686 INFO L226 Difference]: Without dead ends: 11334 [2018-11-18 16:14:43,708 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:14:43,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11334 states. [2018-11-18 16:14:44,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11334 to 11295. [2018-11-18 16:14:44,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11295 states. [2018-11-18 16:14:44,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11295 states to 11295 states and 16455 transitions. [2018-11-18 16:14:44,168 INFO L78 Accepts]: Start accepts. Automaton has 11295 states and 16455 transitions. Word has length 229 [2018-11-18 16:14:44,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:14:44,168 INFO L480 AbstractCegarLoop]: Abstraction has 11295 states and 16455 transitions. [2018-11-18 16:14:44,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:14:44,168 INFO L276 IsEmpty]: Start isEmpty. Operand 11295 states and 16455 transitions. [2018-11-18 16:14:44,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-18 16:14:44,185 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:14:44,185 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:14:44,185 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:14:44,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:14:44,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1828618577, now seen corresponding path program 1 times [2018-11-18 16:14:44,186 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:14:44,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:14:44,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:14:44,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:14:44,189 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:14:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:14:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-11-18 16:14:44,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:14:44,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:14:44,685 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:14:44,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:14:44,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:14:44,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:14:44,686 INFO L87 Difference]: Start difference. First operand 11295 states and 16455 transitions. Second operand 5 states. [2018-11-18 16:14:45,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:14:45,359 INFO L93 Difference]: Finished difference Result 33474 states and 49052 transitions. [2018-11-18 16:14:45,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 16:14:45,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2018-11-18 16:14:45,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:14:45,428 INFO L225 Difference]: With dead ends: 33474 [2018-11-18 16:14:45,428 INFO L226 Difference]: Without dead ends: 22204 [2018-11-18 16:14:45,455 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:14:45,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22204 states. [2018-11-18 16:14:45,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22204 to 22132. [2018-11-18 16:14:45,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22132 states. [2018-11-18 16:14:46,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22132 states to 22132 states and 32370 transitions. [2018-11-18 16:14:46,012 INFO L78 Accepts]: Start accepts. Automaton has 22132 states and 32370 transitions. Word has length 230 [2018-11-18 16:14:46,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:14:46,012 INFO L480 AbstractCegarLoop]: Abstraction has 22132 states and 32370 transitions. [2018-11-18 16:14:46,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:14:46,012 INFO L276 IsEmpty]: Start isEmpty. Operand 22132 states and 32370 transitions. [2018-11-18 16:14:46,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-11-18 16:14:46,023 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:14:46,023 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:14:46,023 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:14:46,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:14:46,023 INFO L82 PathProgramCache]: Analyzing trace with hash 13208408, now seen corresponding path program 1 times [2018-11-18 16:14:46,023 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:14:46,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:14:46,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:14:46,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:14:46,026 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:14:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:14:46,393 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-11-18 16:14:46,393 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:14:46,393 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 16:14:46,394 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-11-18 16:14:46,396 INFO L202 CegarAbsIntRunner]: [0], [3], [5], [7], [9], [12], [16], [18], [21], [25], [27], [32], [34], [36], [39], [46], [77], [79], [82], [86], [99], [287], [288], [297], [576], [577], [578], [581], [594], [596], [644], [646], [649], [737], [764], [766], [784], [833], [836], [997], [999], [1001], [1004], [1019], [1071], [1077], [1078], [1139], [1145], [1146], [1188], [1190], [1191], [1294], [1295], [1296], [1298], [1299], [1399], [1401], [1529], [1531], [1533], [1535], [1537], [1539], [1541], [1543], [1545], [1660], [1663], [1666], [2182], [2187], [2190], [2193], [2196], [2212], [2214], [2215], [2419], [2420], [2560], [2562], [2565], [2590], [2592], [2599], [2602], [2603], [2604], [2607], [2609], [2642], [2643], [2646], [2671], [2672], [2673], [2674], [2675], [2676], [2934], [2935], [2936], [2937], [2938], [2939], [2940], [2941], [2942], [2943], [2944], [2945], [2946], [2947], [2948], [2949], [2950], [2951], [2960], [2961], [2964], [3020], [3146], [3147], [3148], [3149], [3194], [3230], [3270], [3271], [3272], [3273], [3274], [3288], [3302], [3303], [3316], [3317], [3334], [3335], [3378], [3379], [3380], [3381], [3382], [3383], [3384], [3385], [3386], [3387], [3388], [3389], [3390], [3391], [3398], [3399], [3494], [3498], [3662], [3663], [3668], [3669], [3670], [3671], [3680], [3681], [3682], [3683], [3782], [3783], [3784] [2018-11-18 16:14:46,434 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 16:14:46,434 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 16:14:49,359 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:209) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:291) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:165) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.AssumptionBuilder.constructBoogieAssumeStatement(AssumptionBuilder.java:75) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.getCachedCodeBlock(TermConjunctEvaluator.java:273) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.applyPost(TermConjunctEvaluator.java:296) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$4(TermConjunctEvaluator.java:178) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computeFixpoint(TermConjunctEvaluator.java:198) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$1(TermConjunctEvaluator.java:150) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computePost(TermConjunctEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.applyPost(PoormanCachedPostOperation.java:308) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:119) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:340) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:536) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:340) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:379) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-11-18 16:14:49,366 INFO L168 Benchmark]: Toolchain (without parser) took 28537.50 ms. Allocated memory was 1.0 GB in the beginning and 3.1 GB in the end (delta: 2.1 GB). Free memory was 945.7 MB in the beginning and 1.9 GB in the end (delta: -1.0 GB). Peak memory consumption was 2.4 GB. Max. memory is 11.5 GB. [2018-11-18 16:14:49,367 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:14:49,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2952.21 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 355.5 MB). Free memory was 945.7 MB in the beginning and 902.7 MB in the end (delta: 43.0 MB). Peak memory consumption was 470.3 MB. Max. memory is 11.5 GB. [2018-11-18 16:14:49,368 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.56 ms. Allocated memory is still 1.4 GB. Free memory was 902.7 MB in the beginning and 894.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 11.5 GB. [2018-11-18 16:14:49,368 INFO L168 Benchmark]: Boogie Preprocessor took 146.99 ms. Allocated memory is still 1.4 GB. Free memory was 894.1 MB in the beginning and 851.2 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 11.5 GB. [2018-11-18 16:14:49,368 INFO L168 Benchmark]: RCFGBuilder took 15592.18 ms. Allocated memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: 1.4 GB). Free memory was 851.2 MB in the beginning and 2.5 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.4 GB. Max. memory is 11.5 GB. [2018-11-18 16:14:49,370 INFO L168 Benchmark]: TraceAbstraction took 9780.89 ms. Allocated memory was 2.8 GB in the beginning and 3.1 GB in the end (delta: 348.7 MB). Free memory was 2.5 GB in the beginning and 1.9 GB in the end (delta: 565.7 MB). Peak memory consumption was 2.2 GB. Max. memory is 11.5 GB. [2018-11-18 16:14:49,373 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 2952.21 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 355.5 MB). Free memory was 945.7 MB in the beginning and 902.7 MB in the end (delta: 43.0 MB). Peak memory consumption was 470.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 62.56 ms. Allocated memory is still 1.4 GB. Free memory was 902.7 MB in the beginning and 894.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 146.99 ms. Allocated memory is still 1.4 GB. Free memory was 894.1 MB in the beginning and 851.2 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 15592.18 ms. Allocated memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: 1.4 GB). Free memory was 851.2 MB in the beginning and 2.5 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.4 GB. Max. memory is 11.5 GB. * TraceAbstraction took 9780.89 ms. Allocated memory was 2.8 GB in the beginning and 3.1 GB in the end (delta: 348.7 MB). Free memory was 2.5 GB in the beginning and 1.9 GB in the end (delta: 565.7 MB). Peak memory consumption was 2.2 GB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 16:14:50,837 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:14:50,838 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:14:50,845 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:14:50,846 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:14:50,846 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:14:50,847 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:14:50,848 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:14:50,849 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:14:50,850 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:14:50,851 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:14:50,851 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:14:50,851 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:14:50,852 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:14:50,853 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:14:50,854 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:14:50,854 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:14:50,855 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:14:50,857 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:14:50,858 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:14:50,859 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:14:50,860 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:14:50,862 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:14:50,862 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:14:50,862 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:14:50,863 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:14:50,863 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:14:50,864 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:14:50,865 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:14:50,866 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:14:50,866 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:14:50,866 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:14:50,866 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:14:50,867 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:14:50,867 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:14:50,868 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:14:50,868 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2018-11-18 16:14:50,879 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:14:50,879 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:14:50,880 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:14:50,880 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:14:50,880 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:14:50,880 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:14:50,880 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:14:50,880 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:14:50,880 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:14:50,881 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:14:50,882 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:14:50,882 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:14:50,882 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:14:50,882 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:14:50,882 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:14:50,882 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 16:14:50,882 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 16:14:50,882 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:14:50,883 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:14:50,883 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:14:50,883 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:14:50,883 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:14:50,883 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:14:50,883 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:14:50,883 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:14:50,883 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:14:50,884 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:14:50,884 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:14:50,884 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 16:14:50,884 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:14:50,884 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 16:14:50,884 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 16:14:50,884 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan 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 -> 3a7667ce5c93eeac4f22f6c3a45c95f53de299aa [2018-11-18 16:14:50,912 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:14:50,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:14:50,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:14:50,923 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:14:50,924 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:14:50,924 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point_true-unreach-call.cil.out.c [2018-11-18 16:14:50,958 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/data/7a2df4a23/62ad17c3464e4e75acf2ad09a7db3bb0/FLAGf7db07ef9 [2018-11-18 16:14:51,545 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:14:51,545 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point_true-unreach-call.cil.out.c [2018-11-18 16:14:51,567 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/data/7a2df4a23/62ad17c3464e4e75acf2ad09a7db3bb0/FLAGf7db07ef9 [2018-11-18 16:14:51,946 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/data/7a2df4a23/62ad17c3464e4e75acf2ad09a7db3bb0 [2018-11-18 16:14:51,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:14:51,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:14:51,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:14:51,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:14:51,952 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:14:51,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:14:51" (1/1) ... [2018-11-18 16:14:51,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d16e451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:51, skipping insertion in model container [2018-11-18 16:14:51,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:14:51" (1/1) ... [2018-11-18 16:14:51,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:14:52,044 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:14:54,186 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:14:54,259 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:14:54,978 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:14:55,194 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:14:55,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:55 WrapperNode [2018-11-18 16:14:55,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:14:55,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:14:55,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:14:55,195 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:14:55,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:55" (1/1) ... [2018-11-18 16:14:55,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:55" (1/1) ... [2018-11-18 16:14:55,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:14:55,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:14:55,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:14:55,259 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:14:55,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:55" (1/1) ... [2018-11-18 16:14:55,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:55" (1/1) ... [2018-11-18 16:14:55,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:55" (1/1) ... [2018-11-18 16:14:55,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:55" (1/1) ... [2018-11-18 16:14:55,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:55" (1/1) ... [2018-11-18 16:14:55,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:55" (1/1) ... [2018-11-18 16:14:55,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:55" (1/1) ... [2018-11-18 16:14:55,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:14:55,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:14:55,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:14:55,449 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:14:55,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:14:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_uninit_3 [2018-11-18 16:14:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_fir_interrupt [2018-11-18 16:14:55,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_fir_interrupt [2018-11-18 16:14:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_fir_change_speed [2018-11-18 16:14:55,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_fir_change_speed [2018-11-18 16:14:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure async_unwrap_char [2018-11-18 16:14:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___platform_driver_register_37 [2018-11-18 16:14:55,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___platform_driver_register_37 [2018-11-18 16:14:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_uninit_2 [2018-11-18 16:14:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2018-11-18 16:14:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2018-11-18 16:14:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2018-11-18 16:14:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2018-11-18 16:14:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_4 [2018-11-18 16:14:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 16:14:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2018-11-18 16:14:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2018-11-18 16:14:55,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2018-11-18 16:14:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2018-11-18 16:14:55,498 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2018-11-18 16:14:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure irda_device_txqueue_empty [2018-11-18 16:14:55,498 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_device_txqueue_empty [2018-11-18 16:14:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2018-11-18 16:14:55,498 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2018-11-18 16:14:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure irda_setup_dma [2018-11-18 16:14:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure irda_qos_bits_to_value [2018-11-18 16:14:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2018-11-18 16:14:55,498 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2018-11-18 16:14:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_setup [2018-11-18 16:14:55,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_setup [2018-11-18 16:14:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2018-11-18 16:14:55,499 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2018-11-18 16:14:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2018-11-18 16:14:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_sir_interrupt [2018-11-18 16:14:55,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_sir_interrupt [2018-11-18 16:14:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2018-11-18 16:14:55,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2018-11-18 16:14:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_dma_receive_complete [2018-11-18 16:14:55,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_dma_receive_complete [2018-11-18 16:14:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_sir_change_speed [2018-11-18 16:14:55,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_sir_change_speed [2018-11-18 16:14:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure irda_init_max_qos_capabilies [2018-11-18 16:14:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_close [2018-11-18 16:14:55,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_close [2018-11-18 16:14:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2018-11-18 16:14:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_is_receiving [2018-11-18 16:14:55,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_is_receiving [2018-11-18 16:14:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_interrupt [2018-11-18 16:14:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_interrupt [2018-11-18 16:14:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2018-11-18 16:14:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2018-11-18 16:14:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2018-11-18 16:14:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2018-11-18 16:14:55,502 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2018-11-18 16:14:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_init_2 [2018-11-18 16:14:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_init_3 [2018-11-18 16:14:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-11-18 16:14:55,502 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-11-18 16:14:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2018-11-18 16:14:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2018-11-18 16:14:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_suspend [2018-11-18 16:14:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_suspend [2018-11-18 16:14:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_46 [2018-11-18 16:14:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_46 [2018-11-18 16:14:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_45 [2018-11-18 16:14:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_45 [2018-11-18 16:14:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure __preempt_count_sub [2018-11-18 16:14:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __preempt_count_sub [2018-11-18 16:14:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2018-11-18 16:14:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2018-11-18 16:14:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:14:55,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:14:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2018-11-18 16:14:55,504 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2018-11-18 16:14:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2018-11-18 16:14:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure switch_bank [2018-11-18 16:14:55,504 INFO L138 BoogieDeclarations]: Found implementation of procedure switch_bank [2018-11-18 16:14:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2018-11-18 16:14:55,504 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2018-11-18 16:14:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2018-11-18 16:14:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2018-11-18 16:14:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2018-11-18 16:14:55,505 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2018-11-18 16:14:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2018-11-18 16:14:55,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2018-11-18 16:14:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lock_release [2018-11-18 16:14:55,505 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lock_release [2018-11-18 16:14:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_init_53 [2018-11-18 16:14:55,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_init_53 [2018-11-18 16:14:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 16:14:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2018-11-18 16:14:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2018-11-18 16:14:55,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2018-11-18 16:14:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_remove_4 [2018-11-18 16:14:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_us_delta [2018-11-18 16:14:55,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_us_delta [2018-11-18 16:14:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2018-11-18 16:14:55,506 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2018-11-18 16:14:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_sir_hard_xmit [2018-11-18 16:14:55,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_sir_hard_xmit [2018-11-18 16:14:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_dma_receive [2018-11-18 16:14:55,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_dma_receive [2018-11-18 16:14:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_init_43 [2018-11-18 16:14:55,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_init_43 [2018-11-18 16:14:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2018-11-18 16:14:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_divns [2018-11-18 16:14:55,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_divns [2018-11-18 16:14:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2018-11-18 16:14:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2018-11-18 16:14:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2018-11-18 16:14:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 16:14:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 16:14:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2018-11-18 16:14:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_to_us [2018-11-18 16:14:55,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_to_us [2018-11-18 16:14:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_net_ioctl [2018-11-18 16:14:55,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_net_ioctl [2018-11-18 16:14:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure SetCOMInterrupts [2018-11-18 16:14:55,508 INFO L138 BoogieDeclarations]: Found implementation of procedure SetCOMInterrupts [2018-11-18 16:14:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure __platform_driver_register [2018-11-18 16:14:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2018-11-18 16:14:55,509 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2018-11-18 16:14:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2018-11-18 16:14:55,509 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2018-11-18 16:14:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2018-11-18 16:14:55,509 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2018-11-18 16:14:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2018-11-18 16:14:55,509 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2018-11-18 16:14:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_change_dongle_speed [2018-11-18 16:14:55,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_change_dongle_speed [2018-11-18 16:14:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure SIR2FIR [2018-11-18 16:14:55,510 INFO L138 BoogieDeclarations]: Found implementation of procedure SIR2FIR [2018-11-18 16:14:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_dma_xmit_complete [2018-11-18 16:14:55,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_dma_xmit_complete [2018-11-18 16:14:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma [2018-11-18 16:14:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_4 [2018-11-18 16:14:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_44 [2018-11-18 16:14:55,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_44 [2018-11-18 16:14:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2018-11-18 16:14:55,510 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2018-11-18 16:14:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure async_wrap_skb [2018-11-18 16:14:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2018-11-18 16:14:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure irda_get_mtt [2018-11-18 16:14:55,511 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_get_mtt [2018-11-18 16:14:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2018-11-18 16:14:55,511 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2018-11-18 16:14:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_12 [2018-11-18 16:14:55,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_12 [2018-11-18 16:14:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_9 [2018-11-18 16:14:55,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_9 [2018-11-18 16:14:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_cleanup [2018-11-18 16:14:55,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_cleanup [2018-11-18 16:14:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2018-11-18 16:14:55,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2018-11-18 16:14:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2018-11-18 16:14:55,512 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2018-11-18 16:14:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 16:14:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_net_close [2018-11-18 16:14:55,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_net_close [2018-11-18 16:14:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2018-11-18 16:14:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2018-11-18 16:14:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_net_device_ops_3 [2018-11-18 16:14:55,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_net_device_ops_3 [2018-11-18 16:14:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_sir_write_wakeup [2018-11-18 16:14:55,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_sir_write_wakeup [2018-11-18 16:14:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2018-11-18 16:14:55,513 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2018-11-18 16:14:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2018-11-18 16:14:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_read_dongle_id [2018-11-18 16:14:55,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_read_dongle_id [2018-11-18 16:14:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_platform_driver_unregister_38 [2018-11-18 16:14:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_platform_driver_unregister_38 [2018-11-18 16:14:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_dma_xmit [2018-11-18 16:14:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_dma_xmit [2018-11-18 16:14:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_platform_driver_unregister_39 [2018-11-18 16:14:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_platform_driver_unregister_39 [2018-11-18 16:14:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2018-11-18 16:14:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2018-11-18 16:14:55,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2018-11-18 16:14:55,514 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2018-11-18 16:14:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2018-11-18 16:14:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2018-11-18 16:14:55,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2018-11-18 16:14:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2018-11-18 16:14:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure irda_get_next_speed [2018-11-18 16:14:55,515 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_get_next_speed [2018-11-18 16:14:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_net_open [2018-11-18 16:14:55,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_net_open [2018-11-18 16:14:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2018-11-18 16:14:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure qdisc_all_tx_empty [2018-11-18 16:14:55,516 INFO L138 BoogieDeclarations]: Found implementation of procedure qdisc_all_tx_empty [2018-11-18 16:14:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_42 [2018-11-18 16:14:55,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_42 [2018-11-18 16:14:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2018-11-18 16:14:55,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2018-11-18 16:14:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_sir_receive [2018-11-18 16:14:55,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_sir_receive [2018-11-18 16:14:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2018-11-18 16:14:55,516 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2018-11-18 16:14:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-18 16:14:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2018-11-18 16:14:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2018-11-18 16:14:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2018-11-18 16:14:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2018-11-18 16:14:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2018-11-18 16:14:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2018-11-18 16:14:55,517 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2018-11-18 16:14:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2018-11-18 16:14:55,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2018-11-18 16:14:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2018-11-18 16:14:55,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2018-11-18 16:14:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2018-11-18 16:14:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2018-11-18 16:14:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_sir_write [2018-11-18 16:14:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_sir_write [2018-11-18 16:14:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure irlap_close [2018-11-18 16:14:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2018-11-18 16:14:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2018-11-18 16:14:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2018-11-18 16:14:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2018-11-18 16:14:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_irdadev [2018-11-18 16:14:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2018-11-18 16:14:55,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2018-11-18 16:14:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_open [2018-11-18 16:14:55,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_open [2018-11-18 16:14:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_init [2018-11-18 16:14:55,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_init [2018-11-18 16:14:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2018-11-18 16:14:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:14:55,519 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:14:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2018-11-18 16:14:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 16:14:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure disable_dma [2018-11-18 16:14:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_dma [2018-11-18 16:14:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2018-11-18 16:14:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure __preempt_count_add [2018-11-18 16:14:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __preempt_count_add [2018-11-18 16:14:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_fir_hard_xmit [2018-11-18 16:14:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_fir_hard_xmit [2018-11-18 16:14:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2018-11-18 16:14:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___netdev_alloc_skb_31 [2018-11-18 16:14:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___netdev_alloc_skb_31 [2018-11-18 16:14:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2018-11-18 16:14:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2018-11-18 16:14:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_platform_driver_init_4 [2018-11-18 16:14:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_platform_driver_init_4 [2018-11-18 16:14:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure FIR2SIR [2018-11-18 16:14:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure FIR2SIR [2018-11-18 16:14:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2018-11-18 16:14:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2018-11-18 16:14:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2018-11-18 16:14:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lock_acquire [2018-11-18 16:14:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lock_acquire [2018-11-18 16:14:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_probe_53 [2018-11-18 16:14:55,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_probe_53 [2018-11-18 16:14:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_41 [2018-11-18 16:14:55,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_41 [2018-11-18 16:14:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2018-11-18 16:14:55,522 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2018-11-18 16:14:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_5 [2018-11-18 16:14:55,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_5 [2018-11-18 16:14:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_change_speed [2018-11-18 16:14:55,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_change_speed [2018-11-18 16:14:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_43 [2018-11-18 16:14:55,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_43 [2018-11-18 16:14:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2018-11-18 16:14:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2018-11-18 16:14:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure request_dma [2018-11-18 16:14:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2018-11-18 16:14:55,523 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2018-11-18 16:14:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2018-11-18 16:14:55,523 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2018-11-18 16:14:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_40 [2018-11-18 16:14:55,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_40 [2018-11-18 16:14:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2018-11-18 16:14:55,524 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2018-11-18 16:14:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2018-11-18 16:14:55,524 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2018-11-18 16:14:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2018-11-18 16:14:55,524 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2018-11-18 16:14:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2018-11-18 16:14:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure ali_ircc_resume [2018-11-18 16:14:55,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ali_ircc_resume [2018-11-18 16:14:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2018-11-18 16:14:55,525 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2018-11-18 16:14:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2018-11-18 16:14:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2018-11-18 16:14:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2018-11-18 16:14:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2018-11-18 16:14:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_to_linear_data [2018-11-18 16:14:55,525 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_to_linear_data [2018-11-18 16:14:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure irlap_open [2018-11-18 16:14:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure irda_device_set_media_busy [2018-11-18 16:14:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:14:55,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:14:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2018-11-18 16:14:55,526 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2018-11-18 16:15:25,182 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:15:25,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:15:25 BoogieIcfgContainer [2018-11-18 16:15:25,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:15:25,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:15:25,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:15:25,186 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:15:25,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:14:51" (1/3) ... [2018-11-18 16:15:25,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f320d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:15:25, skipping insertion in model container [2018-11-18 16:15:25,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:14:55" (2/3) ... [2018-11-18 16:15:25,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f320d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:15:25, skipping insertion in model container [2018-11-18 16:15:25,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:15:25" (3/3) ... [2018-11-18 16:15:25,188 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point_true-unreach-call.cil.out.c [2018-11-18 16:15:25,196 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:15:25,207 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:15:25,219 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:15:25,250 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:15:25,251 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:15:25,251 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:15:25,251 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:15:25,251 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:15:25,251 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:15:25,251 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:15:25,251 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:15:25,251 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:15:25,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states. [2018-11-18 16:15:25,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-11-18 16:15:25,299 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:15:25,301 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:15:25,302 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:15:25,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:15:25,307 INFO L82 PathProgramCache]: Analyzing trace with hash -85926100, now seen corresponding path program 1 times [2018-11-18 16:15:25,315 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 16:15:25,315 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 16:15:25,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:15:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:15:27,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:15:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-11-18 16:15:27,806 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:15:27,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:15:27,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 16:15:27,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 16:15:27,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:15:27,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:15:27,826 INFO L87 Difference]: Start difference. First operand 1489 states. Second operand 3 states. [2018-11-18 16:15:28,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:15:28,048 INFO L93 Difference]: Finished difference Result 2803 states and 4035 transitions. [2018-11-18 16:15:28,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:15:28,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2018-11-18 16:15:28,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:15:28,069 INFO L225 Difference]: With dead ends: 2803 [2018-11-18 16:15:28,069 INFO L226 Difference]: Without dead ends: 1242 [2018-11-18 16:15:28,077 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:15:28,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2018-11-18 16:15:28,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1242. [2018-11-18 16:15:28,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1242 states. [2018-11-18 16:15:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1779 transitions. [2018-11-18 16:15:28,177 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1779 transitions. Word has length 227 [2018-11-18 16:15:28,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:15:28,179 INFO L480 AbstractCegarLoop]: Abstraction has 1242 states and 1779 transitions. [2018-11-18 16:15:28,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 16:15:28,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1779 transitions. [2018-11-18 16:15:28,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-11-18 16:15:28,186 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:15:28,186 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:15:28,186 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:15:28,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:15:28,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1365789778, now seen corresponding path program 1 times [2018-11-18 16:15:28,188 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 16:15:28,188 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 16:15:28,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:15:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:15:30,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:15:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-11-18 16:15:30,507 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:15:30,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:15:30,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:15:30,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:15:30,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:15:30,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:15:30,517 INFO L87 Difference]: Start difference. First operand 1242 states and 1779 transitions. Second operand 5 states. [2018-11-18 16:15:30,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:15:30,773 INFO L93 Difference]: Finished difference Result 3682 states and 5316 transitions. [2018-11-18 16:15:30,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 16:15:30,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2018-11-18 16:15:30,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:15:30,787 INFO L225 Difference]: With dead ends: 3682 [2018-11-18 16:15:30,787 INFO L226 Difference]: Without dead ends: 2465 [2018-11-18 16:15:30,793 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:15:30,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2018-11-18 16:15:30,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2452. [2018-11-18 16:15:30,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2452 states. [2018-11-18 16:15:30,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3533 transitions. [2018-11-18 16:15:30,903 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3533 transitions. Word has length 227 [2018-11-18 16:15:30,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:15:30,904 INFO L480 AbstractCegarLoop]: Abstraction has 2452 states and 3533 transitions. [2018-11-18 16:15:30,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:15:30,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3533 transitions. [2018-11-18 16:15:30,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-11-18 16:15:30,915 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:15:30,915 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:15:30,915 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:15:30,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:15:30,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1695655004, now seen corresponding path program 1 times [2018-11-18 16:15:30,919 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 16:15:30,919 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 16:15:30,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:15:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:15:33,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:15:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-11-18 16:15:33,379 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:15:33,387 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:15:33,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:15:33,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:15:33,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:15:33,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:15:33,389 INFO L87 Difference]: Start difference. First operand 2452 states and 3533 transitions. Second operand 5 states. [2018-11-18 16:15:33,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:15:33,648 INFO L93 Difference]: Finished difference Result 7326 states and 10637 transitions. [2018-11-18 16:15:33,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 16:15:33,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2018-11-18 16:15:33,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:15:33,664 INFO L225 Difference]: With dead ends: 7326 [2018-11-18 16:15:33,664 INFO L226 Difference]: Without dead ends: 4899 [2018-11-18 16:15:33,671 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:15:33,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4899 states. [2018-11-18 16:15:33,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4899 to 4878. [2018-11-18 16:15:33,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4878 states. [2018-11-18 16:15:33,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4878 states to 4878 states and 7065 transitions. [2018-11-18 16:15:33,809 INFO L78 Accepts]: Start accepts. Automaton has 4878 states and 7065 transitions. Word has length 228 [2018-11-18 16:15:33,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:15:33,810 INFO L480 AbstractCegarLoop]: Abstraction has 4878 states and 7065 transitions. [2018-11-18 16:15:33,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:15:33,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4878 states and 7065 transitions. [2018-11-18 16:15:33,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-11-18 16:15:33,819 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:15:33,819 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:15:33,820 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:15:33,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:15:33,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1603854219, now seen corresponding path program 1 times [2018-11-18 16:15:33,821 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 16:15:33,821 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 16:15:33,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:15:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:15:36,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:15:36,205 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-11-18 16:15:36,205 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:15:36,213 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:15:36,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:15:36,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:15:36,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:15:36,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:15:36,215 INFO L87 Difference]: Start difference. First operand 4878 states and 7065 transitions. Second operand 5 states. [2018-11-18 16:15:36,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:15:36,584 INFO L93 Difference]: Finished difference Result 14627 states and 21337 transitions. [2018-11-18 16:15:36,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 16:15:36,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2018-11-18 16:15:36,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:15:36,634 INFO L225 Difference]: With dead ends: 14627 [2018-11-18 16:15:36,635 INFO L226 Difference]: Without dead ends: 9774 [2018-11-18 16:15:36,654 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:15:36,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9774 states. [2018-11-18 16:15:37,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9774 to 9735. [2018-11-18 16:15:37,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9735 states. [2018-11-18 16:15:37,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9735 states to 9735 states and 14167 transitions. [2018-11-18 16:15:37,096 INFO L78 Accepts]: Start accepts. Automaton has 9735 states and 14167 transitions. Word has length 229 [2018-11-18 16:15:37,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:15:37,096 INFO L480 AbstractCegarLoop]: Abstraction has 9735 states and 14167 transitions. [2018-11-18 16:15:37,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:15:37,096 INFO L276 IsEmpty]: Start isEmpty. Operand 9735 states and 14167 transitions. [2018-11-18 16:15:37,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-18 16:15:37,111 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:15:37,111 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:15:37,111 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:15:37,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:15:37,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1449854369, now seen corresponding path program 1 times [2018-11-18 16:15:37,113 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 16:15:37,113 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 16:15:37,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:15:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:15:39,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:15:39,408 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-11-18 16:15:39,408 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 16:15:39,415 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:15:39,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:15:39,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:15:39,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:15:39,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:15:39,416 INFO L87 Difference]: Start difference. First operand 9735 states and 14167 transitions. Second operand 5 states. [2018-11-18 16:15:39,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:15:39,785 INFO L93 Difference]: Finished difference Result 28989 states and 42474 transitions. [2018-11-18 16:15:39,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 16:15:39,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2018-11-18 16:15:39,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:15:39,852 INFO L225 Difference]: With dead ends: 28989 [2018-11-18 16:15:39,852 INFO L226 Difference]: Without dead ends: 19279 [2018-11-18 16:15:39,880 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:15:39,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19279 states. [2018-11-18 16:15:40,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19279 to 19207. [2018-11-18 16:15:40,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19207 states. [2018-11-18 16:15:40,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19207 states to 19207 states and 28080 transitions. [2018-11-18 16:15:40,590 INFO L78 Accepts]: Start accepts. Automaton has 19207 states and 28080 transitions. Word has length 230 [2018-11-18 16:15:40,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:15:40,590 INFO L480 AbstractCegarLoop]: Abstraction has 19207 states and 28080 transitions. [2018-11-18 16:15:40,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:15:40,591 INFO L276 IsEmpty]: Start isEmpty. Operand 19207 states and 28080 transitions. [2018-11-18 16:15:40,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-11-18 16:15:40,606 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:15:40,607 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:15:40,607 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:15:40,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:15:40,607 INFO L82 PathProgramCache]: Analyzing trace with hash -93094790, now seen corresponding path program 1 times [2018-11-18 16:15:40,609 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 16:15:40,609 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6922c30-70db-49eb-bf3b-94c0e02f2a54/bin-2019/utaipan/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 16:15:40,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:15:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:15:42,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:15:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-11-18 16:15:42,845 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:15:43,119 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-11-18 16:15:43,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 16:15:43,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 13 [2018-11-18 16:15:43,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 16:15:43,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 16:15:43,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-11-18 16:15:43,126 INFO L87 Difference]: Start difference. First operand 19207 states and 28080 transitions. Second operand 13 states. [2018-11-18 16:15:48,822 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-11-18 16:15:48,824 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPrecondition(IncrementalHoareTripleChecker.java:334) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:258) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:270) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:688) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:601) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2018-11-18 16:15:48,827 INFO L168 Benchmark]: Toolchain (without parser) took 56878.10 ms. Allocated memory was 1.0 GB in the beginning and 3.6 GB in the end (delta: 2.6 GB). Free memory was 933.4 MB in the beginning and 2.6 GB in the end (delta: -1.7 GB). Peak memory consumption was 908.0 MB. Max. memory is 11.5 GB. [2018-11-18 16:15:48,828 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:15:48,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3245.28 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 318.8 MB). Free memory was 933.4 MB in the beginning and 859.3 MB in the end (delta: 74.1 MB). Peak memory consumption was 549.0 MB. Max. memory is 11.5 GB. [2018-11-18 16:15:48,828 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.57 ms. Allocated memory is still 1.3 GB. Free memory was 859.3 MB in the beginning and 848.1 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 11.5 GB. [2018-11-18 16:15:48,829 INFO L168 Benchmark]: Boogie Preprocessor took 189.40 ms. Allocated memory is still 1.3 GB. Free memory was 848.1 MB in the beginning and 799.5 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:15:48,829 INFO L168 Benchmark]: RCFGBuilder took 29734.28 ms. Allocated memory was 1.3 GB in the beginning and 3.3 GB in the end (delta: 1.9 GB). Free memory was 799.5 MB in the beginning and 2.7 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.7 GB. Max. memory is 11.5 GB. [2018-11-18 16:15:48,830 INFO L168 Benchmark]: TraceAbstraction took 23642.68 ms. Allocated memory was 3.3 GB in the beginning and 3.6 GB in the end (delta: 356.0 MB). Free memory was 2.7 GB in the beginning and 2.6 GB in the end (delta: 110.5 MB). Peak memory consumption was 466.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:15:48,832 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 3245.28 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 318.8 MB). Free memory was 933.4 MB in the beginning and 859.3 MB in the end (delta: 74.1 MB). Peak memory consumption was 549.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 63.57 ms. Allocated memory is still 1.3 GB. Free memory was 859.3 MB in the beginning and 848.1 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 189.40 ms. Allocated memory is still 1.3 GB. Free memory was 848.1 MB in the beginning and 799.5 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 29734.28 ms. Allocated memory was 1.3 GB in the beginning and 3.3 GB in the end (delta: 1.9 GB). Free memory was 799.5 MB in the beginning and 2.7 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.7 GB. Max. memory is 11.5 GB. * TraceAbstraction took 23642.68 ms. Allocated memory was 3.3 GB in the beginning and 3.6 GB in the end (delta: 356.0 MB). Free memory was 2.7 GB in the beginning and 2.6 GB in the end (delta: 110.5 MB). Peak memory consumption was 466.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...