./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product27_true-unreach-call_false-termination.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_eac127c6-e496-4c8f-bd9c-05d699a6cfed/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_eac127c6-e496-4c8f-bd9c-05d699a6cfed/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_eac127c6-e496-4c8f-bd9c-05d699a6cfed/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_eac127c6-e496-4c8f-bd9c-05d699a6cfed/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product27_true-unreach-call_false-termination.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_eac127c6-e496-4c8f-bd9c-05d699a6cfed/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_eac127c6-e496-4c8f-bd9c-05d699a6cfed/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 32bit --witnessprinter.graph.data.programhash b49fd66662c490ea81dc99d4f21b657b1bc3f920 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 04:20:45,624 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 04:20:45,625 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 04:20:45,631 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 04:20:45,631 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 04:20:45,632 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 04:20:45,633 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 04:20:45,633 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 04:20:45,634 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 04:20:45,635 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 04:20:45,635 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 04:20:45,635 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 04:20:45,636 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 04:20:45,636 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 04:20:45,637 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 04:20:45,637 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 04:20:45,638 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 04:20:45,638 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 04:20:45,639 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 04:20:45,640 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 04:20:45,640 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 04:20:45,641 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 04:20:45,642 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 04:20:45,642 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 04:20:45,642 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 04:20:45,643 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 04:20:45,643 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 04:20:45,644 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 04:20:45,644 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 04:20:45,645 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 04:20:45,645 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 04:20:45,645 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 04:20:45,645 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 04:20:45,645 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 04:20:45,646 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 04:20:45,646 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 04:20:45,646 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_eac127c6-e496-4c8f-bd9c-05d699a6cfed/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 04:20:45,654 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 04:20:45,654 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 04:20:45,654 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 04:20:45,654 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 04:20:45,654 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 04:20:45,655 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 04:20:45,655 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 04:20:45,655 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 04:20:45,655 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 04:20:45,655 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 04:20:45,655 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 04:20:45,655 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 04:20:45,655 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 04:20:45,656 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 04:20:45,656 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 04:20:45,656 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 04:20:45,656 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 04:20:45,656 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 04:20:45,656 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 04:20:45,656 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 04:20:45,656 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 04:20:45,656 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 04:20:45,656 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 04:20:45,656 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 04:20:45,657 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 04:20:45,657 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 04:20:45,657 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 04:20:45,657 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 04:20:45,657 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 04:20:45,657 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 04:20:45,657 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 04:20:45,657 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 04:20:45,657 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 04:20:45,657 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 04:20:45,657 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 04:20:45,658 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 04:20:45,658 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_eac127c6-e496-4c8f-bd9c-05d699a6cfed/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b49fd66662c490ea81dc99d4f21b657b1bc3f920 [2018-12-02 04:20:45,675 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 04:20:45,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 04:20:45,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 04:20:45,684 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 04:20:45,684 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 04:20:45,685 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_eac127c6-e496-4c8f-bd9c-05d699a6cfed/bin-2019/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec1_product27_true-unreach-call_false-termination.cil.c [2018-12-02 04:20:45,720 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eac127c6-e496-4c8f-bd9c-05d699a6cfed/bin-2019/utaipan/data/550d5840c/183343b327f14d4dae3edf09af5b5837/FLAGa38eb685d [2018-12-02 04:20:46,161 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 04:20:46,162 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_eac127c6-e496-4c8f-bd9c-05d699a6cfed/sv-benchmarks/c/product-lines/minepump_spec1_product27_true-unreach-call_false-termination.cil.c [2018-12-02 04:20:46,168 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eac127c6-e496-4c8f-bd9c-05d699a6cfed/bin-2019/utaipan/data/550d5840c/183343b327f14d4dae3edf09af5b5837/FLAGa38eb685d [2018-12-02 04:20:46,176 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_eac127c6-e496-4c8f-bd9c-05d699a6cfed/bin-2019/utaipan/data/550d5840c/183343b327f14d4dae3edf09af5b5837 [2018-12-02 04:20:46,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 04:20:46,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 04:20:46,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 04:20:46,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 04:20:46,182 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 04:20:46,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:20:46" (1/1) ... [2018-12-02 04:20:46,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46c0e1c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:46, skipping insertion in model container [2018-12-02 04:20:46,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:20:46" (1/1) ... [2018-12-02 04:20:46,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 04:20:46,213 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 04:20:46,358 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 04:20:46,366 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 04:20:46,441 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 04:20:46,456 INFO L195 MainTranslator]: Completed translation [2018-12-02 04:20:46,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:46 WrapperNode [2018-12-02 04:20:46,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 04:20:46,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 04:20:46,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 04:20:46,458 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 04:20:46,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:46" (1/1) ... [2018-12-02 04:20:46,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:46" (1/1) ... [2018-12-02 04:20:46,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 04:20:46,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 04:20:46,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 04:20:46,480 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 04:20:46,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:46" (1/1) ... [2018-12-02 04:20:46,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:46" (1/1) ... [2018-12-02 04:20:46,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:46" (1/1) ... [2018-12-02 04:20:46,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:46" (1/1) ... [2018-12-02 04:20:46,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:46" (1/1) ... [2018-12-02 04:20:46,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:46" (1/1) ... [2018-12-02 04:20:46,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:46" (1/1) ... [2018-12-02 04:20:46,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 04:20:46,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 04:20:46,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 04:20:46,501 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 04:20:46,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eac127c6-e496-4c8f-bd9c-05d699a6cfed/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 [2018-12-02 04:20:46,533 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2018-12-02 04:20:46,533 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2018-12-02 04:20:46,533 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 04:20:46,534 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 04:20:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2018-12-02 04:20:46,534 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2018-12-02 04:20:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2018-12-02 04:20:46,534 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2018-12-02 04:20:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 04:20:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2018-12-02 04:20:46,534 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2018-12-02 04:20:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2018-12-02 04:20:46,534 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2018-12-02 04:20:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2018-12-02 04:20:46,534 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2018-12-02 04:20:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure test [2018-12-02 04:20:46,534 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2018-12-02 04:20:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2018-12-02 04:20:46,535 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2018-12-02 04:20:46,535 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2018-12-02 04:20:46,535 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2018-12-02 04:20:46,535 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2018-12-02 04:20:46,535 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2018-12-02 04:20:46,535 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2018-12-02 04:20:46,535 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2018-12-02 04:20:46,535 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2018-12-02 04:20:46,535 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2018-12-02 04:20:46,535 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2018-12-02 04:20:46,535 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2018-12-02 04:20:46,535 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2018-12-02 04:20:46,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2018-12-02 04:20:46,535 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2018-12-02 04:20:46,535 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2018-12-02 04:20:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2018-12-02 04:20:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2018-12-02 04:20:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2018-12-02 04:20:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2018-12-02 04:20:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2018-12-02 04:20:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2018-12-02 04:20:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-02 04:20:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 04:20:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 04:20:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2018-12-02 04:20:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2018-12-02 04:20:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2018-12-02 04:20:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2018-12-02 04:20:46,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 04:20:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 04:20:46,537 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2018-12-02 04:20:46,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2018-12-02 04:20:46,835 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 04:20:46,836 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-02 04:20:46,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:20:46 BoogieIcfgContainer [2018-12-02 04:20:46,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 04:20:46,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 04:20:46,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 04:20:46,839 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 04:20:46,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:20:46" (1/3) ... [2018-12-02 04:20:46,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f77c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:20:46, skipping insertion in model container [2018-12-02 04:20:46,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:46" (2/3) ... [2018-12-02 04:20:46,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f77c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:20:46, skipping insertion in model container [2018-12-02 04:20:46,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:20:46" (3/3) ... [2018-12-02 04:20:46,842 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product27_true-unreach-call_false-termination.cil.c [2018-12-02 04:20:46,850 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 04:20:46,856 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 04:20:46,868 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 04:20:46,891 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 04:20:46,891 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 04:20:46,891 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 04:20:46,891 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 04:20:46,891 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 04:20:46,892 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 04:20:46,892 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 04:20:46,892 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 04:20:46,904 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2018-12-02 04:20:46,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-02 04:20:46,909 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 04:20:46,910 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 04:20:46,911 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 04:20:46,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 04:20:46,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1500228557, now seen corresponding path program 1 times [2018-12-02 04:20:46,915 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 04:20:46,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:20:46,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 04:20:46,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:20:46,943 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 04:20:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 04:20:47,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 04:20:47,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 04:20:47,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 04:20:47,056 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 04:20:47,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 04:20:47,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 04:20:47,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 04:20:47,068 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 2 states. [2018-12-02 04:20:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 04:20:47,087 INFO L93 Difference]: Finished difference Result 220 states and 275 transitions. [2018-12-02 04:20:47,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 04:20:47,088 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2018-12-02 04:20:47,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 04:20:47,095 INFO L225 Difference]: With dead ends: 220 [2018-12-02 04:20:47,095 INFO L226 Difference]: Without dead ends: 110 [2018-12-02 04:20:47,097 INFO L631 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 [2018-12-02 04:20:47,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-12-02 04:20:47,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-12-02 04:20:47,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-12-02 04:20:47,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 129 transitions. [2018-12-02 04:20:47,125 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 129 transitions. Word has length 46 [2018-12-02 04:20:47,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 04:20:47,125 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 129 transitions. [2018-12-02 04:20:47,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 04:20:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 129 transitions. [2018-12-02 04:20:47,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-02 04:20:47,127 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 04:20:47,127 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 04:20:47,127 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 04:20:47,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 04:20:47,127 INFO L82 PathProgramCache]: Analyzing trace with hash -37970742, now seen corresponding path program 1 times [2018-12-02 04:20:47,127 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 04:20:47,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:20:47,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 04:20:47,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:20:47,128 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 04:20:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 04:20:47,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 04:20:47,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 04:20:47,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 04:20:47,188 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 04:20:47,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 04:20:47,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 04:20:47,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 04:20:47,189 INFO L87 Difference]: Start difference. First operand 110 states and 129 transitions. Second operand 3 states. [2018-12-02 04:20:47,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 04:20:47,203 INFO L93 Difference]: Finished difference Result 163 states and 189 transitions. [2018-12-02 04:20:47,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 04:20:47,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-12-02 04:20:47,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 04:20:47,205 INFO L225 Difference]: With dead ends: 163 [2018-12-02 04:20:47,205 INFO L226 Difference]: Without dead ends: 101 [2018-12-02 04:20:47,205 INFO L631 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 [2018-12-02 04:20:47,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-12-02 04:20:47,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-12-02 04:20:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-12-02 04:20:47,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2018-12-02 04:20:47,212 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 117 transitions. Word has length 47 [2018-12-02 04:20:47,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 04:20:47,212 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 117 transitions. [2018-12-02 04:20:47,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 04:20:47,212 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 117 transitions. [2018-12-02 04:20:47,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-12-02 04:20:47,213 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 04:20:47,213 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 04:20:47,213 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 04:20:47,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 04:20:47,214 INFO L82 PathProgramCache]: Analyzing trace with hash 83305199, now seen corresponding path program 1 times [2018-12-02 04:20:47,214 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 04:20:47,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:20:47,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 04:20:47,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:20:47,215 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 04:20:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 04:20:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 04:20:47,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 04:20:47,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 04:20:47,288 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 04:20:47,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 04:20:47,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 04:20:47,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-12-02 04:20:47,289 INFO L87 Difference]: Start difference. First operand 101 states and 117 transitions. Second operand 7 states. [2018-12-02 04:20:47,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 04:20:47,478 INFO L93 Difference]: Finished difference Result 305 states and 369 transitions. [2018-12-02 04:20:47,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 04:20:47,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2018-12-02 04:20:47,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 04:20:47,480 INFO L225 Difference]: With dead ends: 305 [2018-12-02 04:20:47,480 INFO L226 Difference]: Without dead ends: 228 [2018-12-02 04:20:47,481 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-12-02 04:20:47,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-12-02 04:20:47,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 220. [2018-12-02 04:20:47,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-12-02 04:20:47,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 266 transitions. [2018-12-02 04:20:47,498 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 266 transitions. Word has length 51 [2018-12-02 04:20:47,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 04:20:47,499 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 266 transitions. [2018-12-02 04:20:47,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 04:20:47,499 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 266 transitions. [2018-12-02 04:20:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-02 04:20:47,500 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 04:20:47,500 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 04:20:47,500 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 04:20:47,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 04:20:47,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1498984626, now seen corresponding path program 1 times [2018-12-02 04:20:47,501 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 04:20:47,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:20:47,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 04:20:47,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:20:47,501 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 04:20:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 04:20:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 04:20:47,565 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 04:20:47,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 04:20:47,566 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 04:20:47,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 04:20:47,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 04:20:47,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-02 04:20:47,566 INFO L87 Difference]: Start difference. First operand 220 states and 266 transitions. Second operand 6 states. [2018-12-02 04:20:47,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 04:20:47,677 INFO L93 Difference]: Finished difference Result 597 states and 746 transitions. [2018-12-02 04:20:47,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 04:20:47,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2018-12-02 04:20:47,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 04:20:47,681 INFO L225 Difference]: With dead ends: 597 [2018-12-02 04:20:47,681 INFO L226 Difference]: Without dead ends: 401 [2018-12-02 04:20:47,683 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-12-02 04:20:47,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-12-02 04:20:47,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 395. [2018-12-02 04:20:47,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-12-02 04:20:47,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 482 transitions. [2018-12-02 04:20:47,718 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 482 transitions. Word has length 57 [2018-12-02 04:20:47,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 04:20:47,719 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 482 transitions. [2018-12-02 04:20:47,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 04:20:47,719 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 482 transitions. [2018-12-02 04:20:47,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-12-02 04:20:47,722 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 04:20:47,722 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 04:20:47,722 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 04:20:47,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 04:20:47,722 INFO L82 PathProgramCache]: Analyzing trace with hash 449829746, now seen corresponding path program 1 times [2018-12-02 04:20:47,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 04:20:47,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:20:47,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 04:20:47,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 04:20:47,724 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 04:20:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 04:20:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 04:20:47,813 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 04:20:47,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 04:20:47,813 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 04:20:47,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 04:20:47,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 04:20:47,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 04:20:47,814 INFO L87 Difference]: Start difference. First operand 395 states and 482 transitions. Second operand 7 states. [2018-12-02 04:20:47,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 04:20:47,991 INFO L93 Difference]: Finished difference Result 661 states and 832 transitions. [2018-12-02 04:20:47,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 04:20:47,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2018-12-02 04:20:47,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 04:20:47,991 INFO L225 Difference]: With dead ends: 661 [2018-12-02 04:20:47,991 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 04:20:47,992 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-12-02 04:20:47,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 04:20:47,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 04:20:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 04:20:47,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 04:20:47,993 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2018-12-02 04:20:47,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 04:20:47,993 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 04:20:47,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 04:20:47,993 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 04:20:47,993 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 04:20:47,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 04:20:48,541 INFO L451 ceAbstractionStarter]: At program point deactivatePumpENTRY(lines 831 838) the Hoare annotation is: true [2018-12-02 04:20:48,541 INFO L448 ceAbstractionStarter]: For program point deactivatePumpEXIT(lines 831 838) no Hoare annotation was computed. [2018-12-02 04:20:48,541 INFO L448 ceAbstractionStarter]: For program point deactivatePumpFINAL(lines 831 838) no Hoare annotation was computed. [2018-12-02 04:20:48,541 INFO L444 ceAbstractionStarter]: At program point L799(line 799) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (= ~systemActive~0 0) (= |old(~pumpRunning~0)| ~pumpRunning~0)) [2018-12-02 04:20:48,542 INFO L448 ceAbstractionStarter]: For program point L799-1(lines 780 804) no Hoare annotation was computed. [2018-12-02 04:20:48,542 INFO L444 ceAbstractionStarter]: At program point L794(line 794) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (= ~systemActive~0 0)) [2018-12-02 04:20:48,542 INFO L448 ceAbstractionStarter]: For program point processEnvironmentEXIT(lines 780 804) no Hoare annotation was computed. [2018-12-02 04:20:48,542 INFO L444 ceAbstractionStarter]: At program point L790(line 790) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (= ~systemActive~0 0)) [2018-12-02 04:20:48,542 INFO L448 ceAbstractionStarter]: For program point L788(lines 788 796) no Hoare annotation was computed. [2018-12-02 04:20:48,542 INFO L444 ceAbstractionStarter]: At program point processEnvironmentENTRY(lines 780 804) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (= ~systemActive~0 0) (= |old(~pumpRunning~0)| ~pumpRunning~0)) [2018-12-02 04:20:48,542 INFO L444 ceAbstractionStarter]: At program point L786(line 786) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (= ~systemActive~0 0)) [2018-12-02 04:20:48,542 INFO L448 ceAbstractionStarter]: For program point L786-1(line 786) no Hoare annotation was computed. [2018-12-02 04:20:48,542 INFO L448 ceAbstractionStarter]: For program point L784(lines 784 801) no Hoare annotation was computed. [2018-12-02 04:20:48,543 INFO L451 ceAbstractionStarter]: At program point select_helpersFINAL(lines 61 67) the Hoare annotation is: true [2018-12-02 04:20:48,543 INFO L448 ceAbstractionStarter]: For program point select_helpersEXIT(lines 61 67) no Hoare annotation was computed. [2018-12-02 04:20:48,543 INFO L448 ceAbstractionStarter]: For program point processEnvironment__wrappee__baseEXIT(lines 772 778) no Hoare annotation was computed. [2018-12-02 04:20:48,543 INFO L451 ceAbstractionStarter]: At program point processEnvironment__wrappee__baseFINAL(lines 772 778) the Hoare annotation is: true [2018-12-02 04:20:48,543 INFO L448 ceAbstractionStarter]: For program point valid_productEXIT(lines 68 76) no Hoare annotation was computed. [2018-12-02 04:20:48,543 INFO L451 ceAbstractionStarter]: At program point valid_productENTRY(lines 68 76) the Hoare annotation is: true [2018-12-02 04:20:48,543 INFO L448 ceAbstractionStarter]: For program point valid_productFINAL(lines 68 76) no Hoare annotation was computed. [2018-12-02 04:20:48,543 INFO L448 ceAbstractionStarter]: For program point L706-1(lines 706 712) no Hoare annotation was computed. [2018-12-02 04:20:48,543 INFO L444 ceAbstractionStarter]: At program point testENTRY(lines 676 741) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 ~methaneLevelCritical~0) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-02 04:20:48,544 INFO L444 ceAbstractionStarter]: At program point L731(lines 686 733) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= |old(~pumpRunning~0)| ~pumpRunning~0) (= test_~splverifierCounter~0 0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-02 04:20:48,544 INFO L444 ceAbstractionStarter]: At program point L698(line 698) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= |old(~pumpRunning~0)| ~pumpRunning~0) (= test_~splverifierCounter~0 0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-02 04:20:48,544 INFO L448 ceAbstractionStarter]: For program point L696(lines 696 702) no Hoare annotation was computed. [2018-12-02 04:20:48,544 INFO L448 ceAbstractionStarter]: For program point L696-1(lines 696 702) no Hoare annotation was computed. [2018-12-02 04:20:48,544 INFO L448 ceAbstractionStarter]: For program point testFINAL(lines 676 741) no Hoare annotation was computed. [2018-12-02 04:20:48,544 INFO L448 ceAbstractionStarter]: For program point L688(lines 688 692) no Hoare annotation was computed. [2018-12-02 04:20:48,544 INFO L444 ceAbstractionStarter]: At program point L734(lines 685 735) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-02 04:20:48,544 INFO L444 ceAbstractionStarter]: At program point L724(line 724) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= |old(~pumpRunning~0)| ~pumpRunning~0) (= test_~splverifierCounter~0 0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-02 04:20:48,544 INFO L448 ceAbstractionStarter]: For program point L722(lines 722 728) no Hoare annotation was computed. [2018-12-02 04:20:48,545 INFO L444 ceAbstractionStarter]: At program point L722-1(lines 716 729) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= |old(~pumpRunning~0)| ~pumpRunning~0) (= test_~splverifierCounter~0 0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-02 04:20:48,545 INFO L448 ceAbstractionStarter]: For program point L687(lines 686 733) no Hoare annotation was computed. [2018-12-02 04:20:48,545 INFO L448 ceAbstractionStarter]: For program point L716(lines 716 729) no Hoare annotation was computed. [2018-12-02 04:20:48,545 INFO L444 ceAbstractionStarter]: At program point L708(line 708) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= |old(~pumpRunning~0)| ~pumpRunning~0) (= test_~splverifierCounter~0 0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-02 04:20:48,545 INFO L448 ceAbstractionStarter]: For program point testEXIT(lines 676 741) no Hoare annotation was computed. [2018-12-02 04:20:48,545 INFO L448 ceAbstractionStarter]: For program point L706(lines 706 712) no Hoare annotation was computed. [2018-12-02 04:20:48,545 INFO L444 ceAbstractionStarter]: At program point mainENTRY(lines 285 307) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 ~methaneLevelCritical~0) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-02 04:20:48,545 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 285 307) no Hoare annotation was computed. [2018-12-02 04:20:48,545 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 285 307) no Hoare annotation was computed. [2018-12-02 04:20:48,546 INFO L444 ceAbstractionStarter]: At program point L297(line 297) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)) (and (= main_~tmp~1 ~systemActive~0) (= 0 ~methaneLevelCritical~0) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0))) [2018-12-02 04:20:48,546 INFO L444 ceAbstractionStarter]: At program point L297-1(line 297) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)) (and (= main_~tmp~1 ~systemActive~0) (= 0 ~methaneLevelCritical~0) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0))) [2018-12-02 04:20:48,546 INFO L448 ceAbstractionStarter]: For program point L295(lines 295 302) no Hoare annotation was computed. [2018-12-02 04:20:48,546 INFO L448 ceAbstractionStarter]: For program point L295-1(lines 295 302) no Hoare annotation was computed. [2018-12-02 04:20:48,546 INFO L448 ceAbstractionStarter]: For program point L293(line 293) no Hoare annotation was computed. [2018-12-02 04:20:48,546 INFO L444 ceAbstractionStarter]: At program point L292(line 292) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 ~methaneLevelCritical~0) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-02 04:20:48,546 INFO L444 ceAbstractionStarter]: At program point L291(line 291) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 ~methaneLevelCritical~0) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-02 04:20:48,546 INFO L444 ceAbstractionStarter]: At program point L291-1(line 291) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 ~methaneLevelCritical~0) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-02 04:20:48,547 INFO L448 ceAbstractionStarter]: For program point stopSystemEXIT(lines 914 928) no Hoare annotation was computed. [2018-12-02 04:20:48,547 INFO L444 ceAbstractionStarter]: At program point L920(line 920) the Hoare annotation is: (not (= 0 |old(~pumpRunning~0)|)) [2018-12-02 04:20:48,547 INFO L448 ceAbstractionStarter]: For program point L918(lines 918 924) no Hoare annotation was computed. [2018-12-02 04:20:48,547 INFO L444 ceAbstractionStarter]: At program point stopSystemENTRY(lines 914 928) the Hoare annotation is: (let ((.cse0 (not (= 0 |old(~pumpRunning~0)|)))) (and (or .cse0 (= |old(~systemActive~0)| 0) (not (= ~systemActive~0 0))) (or .cse0 (= |old(~pumpRunning~0)| ~pumpRunning~0)) (or .cse0 (= ~systemActive~0 1) (not (= |old(~systemActive~0)| 1))))) [2018-12-02 04:20:48,547 INFO L448 ceAbstractionStarter]: For program point stopSystemFINAL(lines 914 928) no Hoare annotation was computed. [2018-12-02 04:20:48,547 INFO L448 ceAbstractionStarter]: For program point isPumpRunningEXIT(lines 850 858) no Hoare annotation was computed. [2018-12-02 04:20:48,547 INFO L451 ceAbstractionStarter]: At program point isPumpRunningENTRY(lines 850 858) the Hoare annotation is: true [2018-12-02 04:20:48,547 INFO L448 ceAbstractionStarter]: For program point isPumpRunningFINAL(lines 850 858) no Hoare annotation was computed. [2018-12-02 04:20:48,547 INFO L448 ceAbstractionStarter]: For program point isLowWaterSensorDryFINAL(lines 173 181) no Hoare annotation was computed. [2018-12-02 04:20:48,547 INFO L451 ceAbstractionStarter]: At program point isLowWaterSensorDryENTRY(lines 173 181) the Hoare annotation is: true [2018-12-02 04:20:48,547 INFO L448 ceAbstractionStarter]: For program point isLowWaterSensorDryEXIT(lines 173 181) no Hoare annotation was computed. [2018-12-02 04:20:48,547 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-02 04:20:48,548 INFO L444 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= |old(~pumpRunning~0)| ~pumpRunning~0) [2018-12-02 04:20:48,548 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 04:20:48,548 INFO L451 ceAbstractionStarter]: At program point isLowWaterLevelENTRY(lines 895 913) the Hoare annotation is: true [2018-12-02 04:20:48,548 INFO L448 ceAbstractionStarter]: For program point L904(lines 904 908) no Hoare annotation was computed. [2018-12-02 04:20:48,548 INFO L451 ceAbstractionStarter]: At program point L902(line 902) the Hoare annotation is: true [2018-12-02 04:20:48,548 INFO L448 ceAbstractionStarter]: For program point L904-2(lines 904 908) no Hoare annotation was computed. [2018-12-02 04:20:48,548 INFO L448 ceAbstractionStarter]: For program point isLowWaterLevelEXIT(lines 895 913) no Hoare annotation was computed. [2018-12-02 04:20:48,548 INFO L448 ceAbstractionStarter]: For program point L902-1(line 902) no Hoare annotation was computed. [2018-12-02 04:20:48,548 INFO L448 ceAbstractionStarter]: For program point isLowWaterLevelFINAL(lines 895 913) no Hoare annotation was computed. [2018-12-02 04:20:48,548 INFO L444 ceAbstractionStarter]: At program point changeMethaneLevelENTRY(lines 120 131) the Hoare annotation is: (or (not (= 0 ~pumpRunning~0)) (not (= |old(~methaneLevelCritical~0)| 0)) (= 0 ~methaneLevelCritical~0)) [2018-12-02 04:20:48,548 INFO L448 ceAbstractionStarter]: For program point L124-1(lines 120 131) no Hoare annotation was computed. [2018-12-02 04:20:48,548 INFO L448 ceAbstractionStarter]: For program point changeMethaneLevelEXIT(lines 120 131) no Hoare annotation was computed. [2018-12-02 04:20:48,548 INFO L444 ceAbstractionStarter]: At program point L761(line 761) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (not (= ~systemActive~0 0)) (= |old(~pumpRunning~0)| ~pumpRunning~0))) [2018-12-02 04:20:48,548 INFO L444 ceAbstractionStarter]: At program point L759(lines 759 765) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (= |old(~pumpRunning~0)| ~pumpRunning~0)) [2018-12-02 04:20:48,549 INFO L444 ceAbstractionStarter]: At program point L754(line 754) the Hoare annotation is: (not (= 0 |old(~pumpRunning~0)|)) [2018-12-02 04:20:48,549 INFO L448 ceAbstractionStarter]: For program point L752(lines 751 770) no Hoare annotation was computed. [2018-12-02 04:20:48,549 INFO L444 ceAbstractionStarter]: At program point timeShiftENTRY(lines 748 771) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (= |old(~pumpRunning~0)| ~pumpRunning~0)) [2018-12-02 04:20:48,549 INFO L448 ceAbstractionStarter]: For program point timeShiftEXIT(lines 748 771) no Hoare annotation was computed. [2018-12-02 04:20:48,549 INFO L448 ceAbstractionStarter]: For program point timeShiftFINAL(lines 748 771) no Hoare annotation was computed. [2018-12-02 04:20:48,549 INFO L451 ceAbstractionStarter]: At program point L226-1(lines 226 230) the Hoare annotation is: true [2018-12-02 04:20:48,549 INFO L448 ceAbstractionStarter]: For program point cleanupEXIT(lines 212 241) no Hoare annotation was computed. [2018-12-02 04:20:48,549 INFO L448 ceAbstractionStarter]: For program point L223(line 223) no Hoare annotation was computed. [2018-12-02 04:20:48,549 INFO L451 ceAbstractionStarter]: At program point cleanupENTRY(lines 212 241) the Hoare annotation is: true [2018-12-02 04:20:48,549 INFO L451 ceAbstractionStarter]: At program point L222-2(lines 222 236) the Hoare annotation is: true [2018-12-02 04:20:48,549 INFO L451 ceAbstractionStarter]: At program point L218(line 218) the Hoare annotation is: true [2018-12-02 04:20:48,549 INFO L448 ceAbstractionStarter]: For program point L218-1(line 218) no Hoare annotation was computed. [2018-12-02 04:20:48,549 INFO L451 ceAbstractionStarter]: At program point L237(lines 212 241) the Hoare annotation is: true [2018-12-02 04:20:48,550 INFO L448 ceAbstractionStarter]: For program point L233(line 233) no Hoare annotation was computed. [2018-12-02 04:20:48,550 INFO L448 ceAbstractionStarter]: For program point L226(lines 226 230) no Hoare annotation was computed. [2018-12-02 04:20:48,550 INFO L451 ceAbstractionStarter]: At program point isMethaneLevelCriticalENTRY(lines 132 140) the Hoare annotation is: true [2018-12-02 04:20:48,550 INFO L448 ceAbstractionStarter]: For program point isMethaneLevelCriticalFINAL(lines 132 140) no Hoare annotation was computed. [2018-12-02 04:20:48,550 INFO L448 ceAbstractionStarter]: For program point isMethaneLevelCriticalEXIT(lines 132 140) no Hoare annotation was computed. [2018-12-02 04:20:48,550 INFO L451 ceAbstractionStarter]: At program point lowerWaterLevelENTRY(lines 96 107) the Hoare annotation is: true [2018-12-02 04:20:48,550 INFO L448 ceAbstractionStarter]: For program point lowerWaterLevelEXIT(lines 96 107) no Hoare annotation was computed. [2018-12-02 04:20:48,550 INFO L448 ceAbstractionStarter]: For program point L100-1(lines 96 107) no Hoare annotation was computed. [2018-12-02 04:20:48,550 INFO L448 ceAbstractionStarter]: For program point select_featuresEXIT(lines 54 60) no Hoare annotation was computed. [2018-12-02 04:20:48,550 INFO L451 ceAbstractionStarter]: At program point select_featuresFINAL(lines 54 60) the Hoare annotation is: true [2018-12-02 04:20:48,550 INFO L448 ceAbstractionStarter]: For program point setupEXIT(lines 267 273) no Hoare annotation was computed. [2018-12-02 04:20:48,550 INFO L451 ceAbstractionStarter]: At program point setupFINAL(lines 267 273) the Hoare annotation is: true [2018-12-02 04:20:48,550 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 04:20:48,550 INFO L444 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= 0 ~methaneLevelCritical~0) (= 0 ~pumpRunning~0) (= ~systemActive~0 1)) [2018-12-02 04:20:48,551 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 04:20:48,551 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 04:20:48,551 INFO L448 ceAbstractionStarter]: For program point L112-1(lines 108 119) no Hoare annotation was computed. [2018-12-02 04:20:48,551 INFO L448 ceAbstractionStarter]: For program point waterRiseEXIT(lines 108 119) no Hoare annotation was computed. [2018-12-02 04:20:48,551 INFO L451 ceAbstractionStarter]: At program point waterRiseENTRY(lines 108 119) the Hoare annotation is: true [2018-12-02 04:20:48,551 INFO L448 ceAbstractionStarter]: For program point __automaton_failFINAL(lines 78 85) no Hoare annotation was computed. [2018-12-02 04:20:48,551 INFO L448 ceAbstractionStarter]: For program point __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION(line 82) no Hoare annotation was computed. [2018-12-02 04:20:48,551 INFO L451 ceAbstractionStarter]: At program point __automaton_failENTRY(lines 78 85) the Hoare annotation is: true [2018-12-02 04:20:48,551 INFO L448 ceAbstractionStarter]: For program point __automaton_failEXIT(lines 78 85) no Hoare annotation was computed. [2018-12-02 04:20:48,551 INFO L444 ceAbstractionStarter]: At program point runTestENTRY(lines 275 284) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 ~methaneLevelCritical~0) (= ~systemActive~0 1) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= |old(~systemActive~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-02 04:20:48,551 INFO L448 ceAbstractionStarter]: For program point runTestEXIT(lines 275 284) no Hoare annotation was computed. [2018-12-02 04:20:48,551 INFO L448 ceAbstractionStarter]: For program point runTestFINAL(lines 275 284) no Hoare annotation was computed. [2018-12-02 04:20:48,551 INFO L448 ceAbstractionStarter]: For program point L194-1(line 194) no Hoare annotation was computed. [2018-12-02 04:20:48,552 INFO L448 ceAbstractionStarter]: For program point L192(lines 192 205) no Hoare annotation was computed. [2018-12-02 04:20:48,552 INFO L448 ceAbstractionStarter]: For program point L192-1(lines 184 208) no Hoare annotation was computed. [2018-12-02 04:20:48,552 INFO L451 ceAbstractionStarter]: At program point L190(line 190) the Hoare annotation is: true [2018-12-02 04:20:48,552 INFO L448 ceAbstractionStarter]: For program point L190-1(line 190) no Hoare annotation was computed. [2018-12-02 04:20:48,552 INFO L451 ceAbstractionStarter]: At program point __utac_acc__Specification1_spec__1ENTRY(lines 184 208) the Hoare annotation is: true [2018-12-02 04:20:48,552 INFO L448 ceAbstractionStarter]: For program point __utac_acc__Specification1_spec__1EXIT(lines 184 208) no Hoare annotation was computed. [2018-12-02 04:20:48,552 INFO L444 ceAbstractionStarter]: At program point L198(line 198) the Hoare annotation is: (not (= 0 ~pumpRunning~0)) [2018-12-02 04:20:48,552 INFO L448 ceAbstractionStarter]: For program point L196(lines 196 202) no Hoare annotation was computed. [2018-12-02 04:20:48,552 INFO L444 ceAbstractionStarter]: At program point L194(line 194) the Hoare annotation is: (or (not (= 0 ~pumpRunning~0)) (not (= ~methaneLevelCritical~0 0))) [2018-12-02 04:20:48,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:20:48 BoogieIcfgContainer [2018-12-02 04:20:48,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 04:20:48,562 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 04:20:48,562 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 04:20:48,563 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 04:20:48,563 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:20:46" (3/4) ... [2018-12-02 04:20:48,566 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 04:20:48,571 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2018-12-02 04:20:48,571 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment [2018-12-02 04:20:48,571 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure select_helpers [2018-12-02 04:20:48,571 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2018-12-02 04:20:48,571 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure valid_product [2018-12-02 04:20:48,571 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure test [2018-12-02 04:20:48,571 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 04:20:48,571 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stopSystem [2018-12-02 04:20:48,571 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isLowWaterSensorDry [2018-12-02 04:20:48,571 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2018-12-02 04:20:48,571 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 04:20:48,571 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isLowWaterLevel [2018-12-02 04:20:48,572 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2018-12-02 04:20:48,572 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2018-12-02 04:20:48,572 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2018-12-02 04:20:48,572 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2018-12-02 04:20:48,572 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure lowerWaterLevel [2018-12-02 04:20:48,572 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure select_features [2018-12-02 04:20:48,572 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure setup [2018-12-02 04:20:48,572 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2018-12-02 04:20:48,572 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __automaton_fail [2018-12-02 04:20:48,573 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure runTest [2018-12-02 04:20:48,573 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __utac_acc__Specification1_spec__1 [2018-12-02 04:20:48,577 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2018-12-02 04:20:48,577 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2018-12-02 04:20:48,577 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-12-02 04:20:48,578 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-02 04:20:48,578 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-02 04:20:48,578 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 04:20:48,596 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(0 == \old(pumpRunning)) || (\old(pumpRunning) == pumpRunning && splverifierCounter == 0)) || !(\old(systemActive) == 1)) || !(\old(methaneLevelCritical) == 0) [2018-12-02 04:20:48,596 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(0 == \old(pumpRunning)) || !(\old(systemActive) == 1)) || !(\old(methaneLevelCritical) == 0) [2018-12-02 04:20:48,616 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_eac127c6-e496-4c8f-bd9c-05d699a6cfed/bin-2019/utaipan/witness.graphml [2018-12-02 04:20:48,616 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 04:20:48,617 INFO L168 Benchmark]: Toolchain (without parser) took 2438.98 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 241.7 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -158.0 MB). Peak memory consumption was 83.7 MB. Max. memory is 11.5 GB. [2018-12-02 04:20:48,618 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 04:20:48,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.7 MB). Free memory was 948.1 MB in the beginning and 1.2 GB in the end (delta: -215.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2018-12-02 04:20:48,618 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 04:20:48,618 INFO L168 Benchmark]: Boogie Preprocessor took 20.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 04:20:48,618 INFO L168 Benchmark]: RCFGBuilder took 335.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. [2018-12-02 04:20:48,619 INFO L168 Benchmark]: TraceAbstraction took 1725.35 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 64.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 268.8 MB. Max. memory is 11.5 GB. [2018-12-02 04:20:48,619 INFO L168 Benchmark]: Witness Printer took 53.92 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. [2018-12-02 04:20:48,620 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 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 277.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.7 MB). Free memory was 948.1 MB in the beginning and 1.2 GB in the end (delta: -215.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 335.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1725.35 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 64.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 268.8 MB. Max. memory is 11.5 GB. * Witness Printer took 53.92 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 82]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 685]: Loop Invariant Derived loop invariant: (!(0 == \old(pumpRunning)) || !(\old(systemActive) == 1)) || !(\old(methaneLevelCritical) == 0) - InvariantResult [Line: 222]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 212]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 686]: Loop Invariant Derived loop invariant: ((!(0 == \old(pumpRunning)) || (\old(pumpRunning) == pumpRunning && splverifierCounter == 0)) || !(\old(systemActive) == 1)) || !(\old(methaneLevelCritical) == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 24 procedures, 123 locations, 1 error locations. SAFE Result, 1.6s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 606 SDtfs, 349 SDslu, 1175 SDs, 0 SdLazy, 389 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=395occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 52 LocationsWithAnnotation, 436 PreInvPairs, 481 NumberOfFragments, 479 HoareAnnotationTreeSize, 436 FomulaSimplifications, 397 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 52 FomulaSimplificationsInter, 1804 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 257 ConstructedInterpolants, 0 QuantifiedInterpolants, 25527 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...