./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product12.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_75647644-ba2f-4639-a434-6f0d0d5d9f33/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_75647644-ba2f-4639-a434-6f0d0d5d9f33/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_75647644-ba2f-4639-a434-6f0d0d5d9f33/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_75647644-ba2f-4639-a434-6f0d0d5d9f33/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product12.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_75647644-ba2f-4639-a434-6f0d0d5d9f33/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_75647644-ba2f-4639-a434-6f0d0d5d9f33/bin/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 32bit --witnessprinter.graph.data.programhash 507fc1a89cb1dbaf587ff2c51fbab704dc92da4e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:24:49,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:49,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:49,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:49,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:49,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:49,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:49,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:49,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:49,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:49,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:49,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:49,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:49,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:49,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:49,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:49,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:49,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:49,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:49,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:49,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:49,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:49,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:49,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:49,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:49,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:49,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:49,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:49,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:49,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:49,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:49,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:49,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:49,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:49,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:49,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:49,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:49,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:49,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:49,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:49,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:49,739 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_75647644-ba2f-4639-a434-6f0d0d5d9f33/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:24:49,753 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:49,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:49,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:49,754 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:49,754 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:49,754 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:49,754 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:24:49,754 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:49,755 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:49,755 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:24:49,755 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:24:49,755 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:49,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:49,756 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:49,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:24:49,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:49,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:49,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:24:49,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:49,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:24:49,757 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:49,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:24:49,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:24:49,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:49,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:49,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:49,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:49,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:49,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:49,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:49,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:24:49,761 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:24:49,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:24:49,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:24:49,761 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:49,762 INFO L138 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_75647644-ba2f-4639-a434-6f0d0d5d9f33/bin/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 507fc1a89cb1dbaf587ff2c51fbab704dc92da4e [2019-10-22 11:24:49,801 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:49,815 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:49,818 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:49,819 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:49,819 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:49,820 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_75647644-ba2f-4639-a434-6f0d0d5d9f33/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec2_product12.cil.c [2019-10-22 11:24:49,880 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_75647644-ba2f-4639-a434-6f0d0d5d9f33/bin/utaipan/data/38dbdbdbb/60c7d30ba4ee4e86981bb59212a39c12/FLAG205485f92 [2019-10-22 11:24:50,337 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:50,341 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_75647644-ba2f-4639-a434-6f0d0d5d9f33/sv-benchmarks/c/product-lines/minepump_spec2_product12.cil.c [2019-10-22 11:24:50,352 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_75647644-ba2f-4639-a434-6f0d0d5d9f33/bin/utaipan/data/38dbdbdbb/60c7d30ba4ee4e86981bb59212a39c12/FLAG205485f92 [2019-10-22 11:24:50,669 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_75647644-ba2f-4639-a434-6f0d0d5d9f33/bin/utaipan/data/38dbdbdbb/60c7d30ba4ee4e86981bb59212a39c12 [2019-10-22 11:24:50,672 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:50,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:50,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:50,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:50,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:50,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:50" (1/1) ... [2019-10-22 11:24:50,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f1b158b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:50, skipping insertion in model container [2019-10-22 11:24:50,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:50" (1/1) ... [2019-10-22 11:24:50,688 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:50,735 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:51,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:51,088 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:51,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:51,218 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:51,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:51 WrapperNode [2019-10-22 11:24:51,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:51,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:51,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:51,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:51,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:51" (1/1) ... [2019-10-22 11:24:51,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:51" (1/1) ... [2019-10-22 11:24:51,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:51,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:51,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:51,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:51,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:51" (1/1) ... [2019-10-22 11:24:51,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:51" (1/1) ... [2019-10-22 11:24:51,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:51" (1/1) ... [2019-10-22 11:24:51,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:51" (1/1) ... [2019-10-22 11:24:51,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:51" (1/1) ... [2019-10-22 11:24:51,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:51" (1/1) ... [2019-10-22 11:24:51,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:51" (1/1) ... [2019-10-22 11:24:51,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:51,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:51,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:51,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:51,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_75647644-ba2f-4639-a434-6f0d0d5d9f33/bin/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 [2019-10-22 11:24:51,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:24:51,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:24:51,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:51,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:52,032 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:52,032 INFO L284 CfgBuilder]: Removed 74 assume(true) statements. [2019-10-22 11:24:52,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:52 BoogieIcfgContainer [2019-10-22 11:24:52,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:52,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:52,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:52,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:52,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:50" (1/3) ... [2019-10-22 11:24:52,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f8a709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:52, skipping insertion in model container [2019-10-22 11:24:52,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:51" (2/3) ... [2019-10-22 11:24:52,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f8a709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:52, skipping insertion in model container [2019-10-22 11:24:52,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:52" (3/3) ... [2019-10-22 11:24:52,042 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product12.cil.c [2019-10-22 11:24:52,055 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:52,064 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:24:52,076 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:24:52,099 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:52,099 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:52,099 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:52,099 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:52,100 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:52,100 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:52,100 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:52,100 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:52,119 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-10-22 11:24:52,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:24:52,125 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:52,125 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:52,127 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:52,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:52,133 INFO L82 PathProgramCache]: Analyzing trace with hash 706591477, now seen corresponding path program 1 times [2019-10-22 11:24:52,140 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:52,140 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704774016] [2019-10-22 11:24:52,140 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:52,140 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:52,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:52,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:52,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704774016] [2019-10-22 11:24:52,317 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:52,317 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:24:52,318 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638636247] [2019-10-22 11:24:52,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:24:52,323 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:52,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:24:52,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:52,340 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-10-22 11:24:52,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:52,363 INFO L93 Difference]: Finished difference Result 119 states and 180 transitions. [2019-10-22 11:24:52,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:24:52,364 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-10-22 11:24:52,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:52,373 INFO L225 Difference]: With dead ends: 119 [2019-10-22 11:24:52,373 INFO L226 Difference]: Without dead ends: 59 [2019-10-22 11:24:52,376 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:52,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-10-22 11:24:52,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-10-22 11:24:52,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-10-22 11:24:52,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 82 transitions. [2019-10-22 11:24:52,415 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 82 transitions. Word has length 18 [2019-10-22 11:24:52,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:52,415 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 82 transitions. [2019-10-22 11:24:52,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:24:52,416 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 82 transitions. [2019-10-22 11:24:52,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 11:24:52,416 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:52,416 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:52,417 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:52,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:52,417 INFO L82 PathProgramCache]: Analyzing trace with hash 583909382, now seen corresponding path program 1 times [2019-10-22 11:24:52,418 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:52,418 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469165768] [2019-10-22 11:24:52,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:52,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:52,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:52,505 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469165768] [2019-10-22 11:24:52,506 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:52,506 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:24:52,506 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265900087] [2019-10-22 11:24:52,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:52,508 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:52,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:52,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:52,508 INFO L87 Difference]: Start difference. First operand 59 states and 82 transitions. Second operand 3 states. [2019-10-22 11:24:52,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:52,521 INFO L93 Difference]: Finished difference Result 59 states and 82 transitions. [2019-10-22 11:24:52,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:52,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-22 11:24:52,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:52,523 INFO L225 Difference]: With dead ends: 59 [2019-10-22 11:24:52,523 INFO L226 Difference]: Without dead ends: 31 [2019-10-22 11:24:52,524 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:52,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-22 11:24:52,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-10-22 11:24:52,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-22 11:24:52,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2019-10-22 11:24:52,528 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 43 transitions. Word has length 19 [2019-10-22 11:24:52,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:52,529 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 43 transitions. [2019-10-22 11:24:52,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:52,529 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2019-10-22 11:24:52,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:24:52,530 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:52,530 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:52,530 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:52,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:52,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1289655203, now seen corresponding path program 1 times [2019-10-22 11:24:52,531 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:52,531 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874189285] [2019-10-22 11:24:52,531 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:52,532 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:52,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:52,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:52,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874189285] [2019-10-22 11:24:52,619 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:52,619 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:24:52,619 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327706871] [2019-10-22 11:24:52,619 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:52,619 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:52,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:52,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:52,620 INFO L87 Difference]: Start difference. First operand 31 states and 43 transitions. Second operand 5 states. [2019-10-22 11:24:52,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:52,740 INFO L93 Difference]: Finished difference Result 126 states and 193 transitions. [2019-10-22 11:24:52,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:24:52,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-10-22 11:24:52,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:52,743 INFO L225 Difference]: With dead ends: 126 [2019-10-22 11:24:52,743 INFO L226 Difference]: Without dead ends: 102 [2019-10-22 11:24:52,743 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:24:52,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-10-22 11:24:52,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 50. [2019-10-22 11:24:52,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-22 11:24:52,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 71 transitions. [2019-10-22 11:24:52,755 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 71 transitions. Word has length 24 [2019-10-22 11:24:52,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:52,755 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 71 transitions. [2019-10-22 11:24:52,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:52,755 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 71 transitions. [2019-10-22 11:24:52,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:24:52,756 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:52,756 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:52,756 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:52,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:52,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1754974165, now seen corresponding path program 1 times [2019-10-22 11:24:52,757 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:52,759 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293200195] [2019-10-22 11:24:52,761 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:52,761 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:52,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:52,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:52,864 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293200195] [2019-10-22 11:24:52,865 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:52,865 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:24:52,865 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140561798] [2019-10-22 11:24:52,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:52,865 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:52,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:52,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:52,866 INFO L87 Difference]: Start difference. First operand 50 states and 71 transitions. Second operand 5 states. [2019-10-22 11:24:52,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:52,923 INFO L93 Difference]: Finished difference Result 148 states and 220 transitions. [2019-10-22 11:24:52,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:24:52,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-22 11:24:52,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:52,924 INFO L225 Difference]: With dead ends: 148 [2019-10-22 11:24:52,924 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:24:52,925 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:24:52,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:24:52,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:24:52,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:24:52,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:24:52,926 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-10-22 11:24:52,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:52,926 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:24:52,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:52,926 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:24:52,926 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:24:52,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:24:53,116 INFO L439 ceAbstractionStarter]: At program point L316(lines 311 318) the Hoare annotation is: (and (= 0 ~methaneLevelCritical~0) (= ~pumpRunning~0 0)) [2019-10-22 11:24:53,117 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 434) no Hoare annotation was computed. [2019-10-22 11:24:53,117 INFO L439 ceAbstractionStarter]: At program point L168(lines 167 186) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 0 ULTIMATE.start_test_~splverifierCounter~0)) [2019-10-22 11:24:53,117 INFO L443 ceAbstractionStarter]: For program point L168-1(lines 168 174) no Hoare annotation was computed. [2019-10-22 11:24:53,117 INFO L439 ceAbstractionStarter]: At program point L168-2(lines 167 186) the Hoare annotation is: false [2019-10-22 11:24:53,117 INFO L439 ceAbstractionStarter]: At program point L168-3(lines 167 186) the Hoare annotation is: false [2019-10-22 11:24:53,117 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:24:53,117 INFO L443 ceAbstractionStarter]: For program point L434(line 434) no Hoare annotation was computed. [2019-10-22 11:24:53,118 INFO L443 ceAbstractionStarter]: For program point L434-1(line 434) no Hoare annotation was computed. [2019-10-22 11:24:53,118 INFO L443 ceAbstractionStarter]: For program point L368(lines 368 372) no Hoare annotation was computed. [2019-10-22 11:24:53,118 INFO L443 ceAbstractionStarter]: For program point L434-2(line 434) no Hoare annotation was computed. [2019-10-22 11:24:53,118 INFO L443 ceAbstractionStarter]: For program point L104(lines 104 110) no Hoare annotation was computed. [2019-10-22 11:24:53,118 INFO L439 ceAbstractionStarter]: At program point L104-1(lines 104 110) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 0 ULTIMATE.start_test_~splverifierCounter~0)) [2019-10-22 11:24:53,118 INFO L446 ceAbstractionStarter]: At program point L897(lines 878 900) the Hoare annotation is: true [2019-10-22 11:24:53,118 INFO L439 ceAbstractionStarter]: At program point L864(lines 860 866) the Hoare annotation is: (and (= 0 ~methaneLevelCritical~0) (= ~pumpRunning~0 0)) [2019-10-22 11:24:53,118 INFO L439 ceAbstractionStarter]: At program point L816-2(lines 816 830) the Hoare annotation is: false [2019-10-22 11:24:53,119 INFO L439 ceAbstractionStarter]: At program point L73(lines 68 76) the Hoare annotation is: (and (= 0 ~methaneLevelCritical~0) (= ~pumpRunning~0 0)) [2019-10-22 11:24:53,119 INFO L443 ceAbstractionStarter]: For program point L817(line 817) no Hoare annotation was computed. [2019-10-22 11:24:53,119 INFO L443 ceAbstractionStarter]: For program point L289(lines 289 295) no Hoare annotation was computed. [2019-10-22 11:24:53,119 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:24:53,119 INFO L439 ceAbstractionStarter]: At program point L289-1(lines 289 295) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 0 ULTIMATE.start_test_~splverifierCounter~0)) [2019-10-22 11:24:53,119 INFO L443 ceAbstractionStarter]: For program point L124(lines 124 139) no Hoare annotation was computed. [2019-10-22 11:24:53,119 INFO L443 ceAbstractionStarter]: For program point L356(lines 356 360) no Hoare annotation was computed. [2019-10-22 11:24:53,119 INFO L443 ceAbstractionStarter]: For program point L356-3(lines 356 360) no Hoare annotation was computed. [2019-10-22 11:24:53,119 INFO L443 ceAbstractionStarter]: For program point L356-6(lines 356 360) no Hoare annotation was computed. [2019-10-22 11:24:53,120 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 434) no Hoare annotation was computed. [2019-10-22 11:24:53,120 INFO L439 ceAbstractionStarter]: At program point L175(lines 175 181) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 0 ULTIMATE.start_test_~splverifierCounter~0)) [2019-10-22 11:24:53,120 INFO L439 ceAbstractionStarter]: At program point L175-1(lines 175 181) the Hoare annotation is: false [2019-10-22 11:24:53,120 INFO L439 ceAbstractionStarter]: At program point L175-2(lines 175 181) the Hoare annotation is: false [2019-10-22 11:24:53,120 INFO L443 ceAbstractionStarter]: For program point L820(lines 820 824) no Hoare annotation was computed. [2019-10-22 11:24:53,120 INFO L443 ceAbstractionStarter]: For program point L820-1(lines 168 174) no Hoare annotation was computed. [2019-10-22 11:24:53,120 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:24:53,121 INFO L439 ceAbstractionStarter]: At program point L144(lines 93 145) the Hoare annotation is: false [2019-10-22 11:24:53,121 INFO L443 ceAbstractionStarter]: For program point L95(lines 94 143) no Hoare annotation was computed. [2019-10-22 11:24:53,121 INFO L443 ceAbstractionStarter]: For program point L888(lines 888 895) no Hoare annotation was computed. [2019-10-22 11:24:53,121 INFO L446 ceAbstractionStarter]: At program point L888-1(lines 888 895) the Hoare annotation is: true [2019-10-22 11:24:53,121 INFO L439 ceAbstractionStarter]: At program point L393(lines 388 396) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 0 ULTIMATE.start_test_~splverifierCounter~0)) [2019-10-22 11:24:53,122 INFO L439 ceAbstractionStarter]: At program point L393-1(lines 388 396) the Hoare annotation is: false [2019-10-22 11:24:53,122 INFO L443 ceAbstractionStarter]: For program point L327(lines 327 344) no Hoare annotation was computed. [2019-10-22 11:24:53,122 INFO L439 ceAbstractionStarter]: At program point L393-2(lines 388 396) the Hoare annotation is: false [2019-10-22 11:24:53,122 INFO L439 ceAbstractionStarter]: At program point L327-1(lines 1 900) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 0 ULTIMATE.start_test_~splverifierCounter~0)) [2019-10-22 11:24:53,122 INFO L443 ceAbstractionStarter]: For program point L327-2(lines 327 344) no Hoare annotation was computed. [2019-10-22 11:24:53,122 INFO L439 ceAbstractionStarter]: At program point L327-3(lines 1 900) the Hoare annotation is: false [2019-10-22 11:24:53,123 INFO L443 ceAbstractionStarter]: For program point L327-4(lines 327 344) no Hoare annotation was computed. [2019-10-22 11:24:53,123 INFO L439 ceAbstractionStarter]: At program point L327-5(lines 1 900) the Hoare annotation is: false [2019-10-22 11:24:53,123 INFO L443 ceAbstractionStarter]: For program point L96(lines 96 100) no Hoare annotation was computed. [2019-10-22 11:24:53,123 INFO L439 ceAbstractionStarter]: At program point L245(lines 240 248) the Hoare annotation is: (and (= |ULTIMATE.start_isPumpRunning_#res| 0) (= ~pumpRunning~0 0) (= 0 ULTIMATE.start_test_~splverifierCounter~0)) [2019-10-22 11:24:53,123 INFO L439 ceAbstractionStarter]: At program point L245-1(lines 240 248) the Hoare annotation is: false [2019-10-22 11:24:53,123 INFO L439 ceAbstractionStarter]: At program point L245-2(lines 240 248) the Hoare annotation is: false [2019-10-22 11:24:53,123 INFO L443 ceAbstractionStarter]: For program point L114(lines 114 120) no Hoare annotation was computed. [2019-10-22 11:24:53,124 INFO L439 ceAbstractionStarter]: At program point L114-1(lines 114 120) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 0 ULTIMATE.start_test_~splverifierCounter~0)) [2019-10-22 11:24:53,124 INFO L439 ceAbstractionStarter]: At program point L65(lines 1 900) the Hoare annotation is: (and (= 0 ~methaneLevelCritical~0) (= ~pumpRunning~0 0)) [2019-10-22 11:24:53,124 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-10-22 11:24:53,124 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 434) no Hoare annotation was computed. [2019-10-22 11:24:53,124 INFO L443 ceAbstractionStarter]: For program point L132(lines 132 138) no Hoare annotation was computed. [2019-10-22 11:24:53,124 INFO L439 ceAbstractionStarter]: At program point L132-1(lines 168 174) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 0 ULTIMATE.start_test_~splverifierCounter~0)) [2019-10-22 11:24:53,124 INFO L443 ceAbstractionStarter]: For program point L380(lines 380 384) no Hoare annotation was computed. [2019-10-22 11:24:53,124 INFO L443 ceAbstractionStarter]: For program point L331(lines 331 341) no Hoare annotation was computed. [2019-10-22 11:24:53,125 INFO L443 ceAbstractionStarter]: For program point L331-2(lines 331 341) no Hoare annotation was computed. [2019-10-22 11:24:53,125 INFO L443 ceAbstractionStarter]: For program point L331-4(lines 331 341) no Hoare annotation was computed. [2019-10-22 11:24:53,125 INFO L443 ceAbstractionStarter]: For program point L332(lines 332 338) no Hoare annotation was computed. [2019-10-22 11:24:53,125 INFO L443 ceAbstractionStarter]: For program point L332-2(lines 332 338) no Hoare annotation was computed. [2019-10-22 11:24:53,125 INFO L443 ceAbstractionStarter]: For program point L332-4(lines 332 338) no Hoare annotation was computed. [2019-10-22 11:24:53,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:24:53 BoogieIcfgContainer [2019-10-22 11:24:53,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:24:53,140 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:24:53,140 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:24:53,140 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:24:53,141 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:52" (3/4) ... [2019-10-22 11:24:53,144 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:24:53,168 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2019-10-22 11:24:53,168 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2019-10-22 11:24:53,169 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-10-22 11:24:53,169 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-10-22 11:24:53,169 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 11:24:53,170 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 11:24:53,215 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\result == 0 && pumpRunning == 0) && 0 == splverifierCounter [2019-10-22 11:24:53,273 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_75647644-ba2f-4639-a434-6f0d0d5d9f33/bin/utaipan/witness.graphml [2019-10-22 11:24:53,273 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:24:53,277 INFO L168 Benchmark]: Toolchain (without parser) took 2604.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 947.1 MB in the beginning and 962.0 MB in the end (delta: -14.8 MB). Peak memory consumption was 124.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:53,278 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:53,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 544.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 947.1 MB in the beginning and 1.1 GB in the end (delta: -173.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:53,278 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:53,279 INFO L168 Benchmark]: Boogie Preprocessor took 63.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:53,279 INFO L168 Benchmark]: RCFGBuilder took 673.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:53,279 INFO L168 Benchmark]: TraceAbstraction took 1104.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 968.7 MB in the end (delta: 98.1 MB). Peak memory consumption was 98.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:53,279 INFO L168 Benchmark]: Witness Printer took 133.23 ms. Allocated memory is still 1.2 GB. Free memory was 968.7 MB in the beginning and 962.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:53,281 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 544.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 947.1 MB in the beginning and 1.1 GB in the end (delta: -173.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 77.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 63.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 673.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1104.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 968.7 MB in the end (delta: 98.1 MB). Peak memory consumption was 98.1 MB. Max. memory is 11.5 GB. * Witness Printer took 133.23 ms. Allocated memory is still 1.2 GB. Free memory was 968.7 MB in the beginning and 962.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 434]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 434]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 434]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 175]: Loop Invariant Derived loop invariant: pumpRunning == 0 && 0 == splverifierCounter - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 93]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 888]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: pumpRunning == 0 && 0 == splverifierCounter - InvariantResult [Line: 878]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: pumpRunning == 0 && 0 == splverifierCounter - InvariantResult [Line: 860]: Loop Invariant Derived loop invariant: 0 == methaneLevelCritical && pumpRunning == 0 - InvariantResult [Line: 240]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 0 == methaneLevelCritical && pumpRunning == 0 - InvariantResult [Line: 240]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 388]: Loop Invariant Derived loop invariant: pumpRunning == 0 && 0 == splverifierCounter - InvariantResult [Line: 388]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 0 == methaneLevelCritical && pumpRunning == 0 - InvariantResult [Line: 388]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 311]: Loop Invariant Derived loop invariant: 0 == methaneLevelCritical && pumpRunning == 0 - InvariantResult [Line: 175]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: pumpRunning == 0 && 0 == splverifierCounter - InvariantResult [Line: 175]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 816]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 114]: Loop Invariant Derived loop invariant: pumpRunning == 0 && 0 == splverifierCounter - InvariantResult [Line: 240]: Loop Invariant Derived loop invariant: (\result == 0 && pumpRunning == 0) && 0 == splverifierCounter - InvariantResult [Line: 289]: Loop Invariant Derived loop invariant: pumpRunning == 0 && 0 == splverifierCounter - InvariantResult [Line: 168]: Loop Invariant Derived loop invariant: pumpRunning == 0 && 0 == splverifierCounter - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 63 locations, 3 error locations. Result: SAFE, OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 245 SDtfs, 231 SDslu, 265 SDs, 0 SdLazy, 40 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 52 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 27 LocationsWithAnnotation, 27 PreInvPairs, 74 NumberOfFragments, 108 HoareAnnotationTreeSize, 27 FomulaSimplifications, 1202 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 27 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 3720 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...