./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product41_false-unreach-call_false-termination.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ece5f653-131c-4a2a-9990-691c3b8b3180/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ece5f653-131c-4a2a-9990-691c3b8b3180/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ece5f653-131c-4a2a-9990-691c3b8b3180/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ece5f653-131c-4a2a-9990-691c3b8b3180/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product41_false-unreach-call_false-termination.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ece5f653-131c-4a2a-9990-691c3b8b3180/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ece5f653-131c-4a2a-9990-691c3b8b3180/bin-2019/ukojak --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a2d3ce20e3d26ebf70024607ecab77b852f9995 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 18:40:40,729 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 18:40:40,730 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 18:40:40,736 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 18:40:40,736 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 18:40:40,737 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 18:40:40,738 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 18:40:40,739 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 18:40:40,740 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 18:40:40,741 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 18:40:40,742 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 18:40:40,742 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 18:40:40,743 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 18:40:40,743 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 18:40:40,744 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 18:40:40,744 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 18:40:40,745 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 18:40:40,746 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 18:40:40,747 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 18:40:40,748 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 18:40:40,749 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 18:40:40,749 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 18:40:40,751 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 18:40:40,751 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 18:40:40,752 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 18:40:40,752 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 18:40:40,753 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 18:40:40,753 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 18:40:40,754 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 18:40:40,754 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 18:40:40,755 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 18:40:40,755 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 18:40:40,755 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 18:40:40,755 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 18:40:40,756 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 18:40:40,757 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 18:40:40,757 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ece5f653-131c-4a2a-9990-691c3b8b3180/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-18 18:40:40,765 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 18:40:40,765 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 18:40:40,766 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 18:40:40,766 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 18:40:40,767 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 18:40:40,767 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 18:40:40,767 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 18:40:40,767 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 18:40:40,767 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 18:40:40,767 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 18:40:40,768 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 18:40:40,768 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 18:40:40,768 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 18:40:40,768 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 18:40:40,768 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 18:40:40,768 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 18:40:40,768 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 18:40:40,769 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 18:40:40,769 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-18 18:40:40,769 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-18 18:40:40,769 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 18:40:40,769 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 18:40:40,769 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-18 18:40:40,769 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 18:40:40,770 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 18:40:40,770 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 18:40:40,772 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-18 18:40:40,772 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 18:40:40,772 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 18:40:40,772 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_ece5f653-131c-4a2a-9990-691c3b8b3180/bin-2019/ukojak 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 -> Kojak 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 -> 5a2d3ce20e3d26ebf70024607ecab77b852f9995 [2018-11-18 18:40:40,797 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 18:40:40,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 18:40:40,809 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 18:40:40,811 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 18:40:40,811 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 18:40:40,811 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ece5f653-131c-4a2a-9990-691c3b8b3180/bin-2019/ukojak/../../sv-benchmarks/c/product-lines/minepump_spec1_product41_false-unreach-call_false-termination.cil.c [2018-11-18 18:40:40,858 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ece5f653-131c-4a2a-9990-691c3b8b3180/bin-2019/ukojak/data/a10f780d5/bc05460ed63b4296ba90bfdf4e40897d/FLAG200240f65 [2018-11-18 18:40:41,211 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 18:40:41,211 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ece5f653-131c-4a2a-9990-691c3b8b3180/sv-benchmarks/c/product-lines/minepump_spec1_product41_false-unreach-call_false-termination.cil.c [2018-11-18 18:40:41,220 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ece5f653-131c-4a2a-9990-691c3b8b3180/bin-2019/ukojak/data/a10f780d5/bc05460ed63b4296ba90bfdf4e40897d/FLAG200240f65 [2018-11-18 18:40:41,615 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ece5f653-131c-4a2a-9990-691c3b8b3180/bin-2019/ukojak/data/a10f780d5/bc05460ed63b4296ba90bfdf4e40897d [2018-11-18 18:40:41,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 18:40:41,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 18:40:41,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 18:40:41,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 18:40:41,622 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 18:40:41,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:40:41" (1/1) ... [2018-11-18 18:40:41,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72de6083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:41, skipping insertion in model container [2018-11-18 18:40:41,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:40:41" (1/1) ... [2018-11-18 18:40:41,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 18:40:41,660 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 18:40:41,848 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 18:40:41,857 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 18:40:41,958 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 18:40:41,975 INFO L195 MainTranslator]: Completed translation [2018-11-18 18:40:41,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:41 WrapperNode [2018-11-18 18:40:41,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 18:40:41,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 18:40:41,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 18:40:41,976 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 18:40:41,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:41" (1/1) ... [2018-11-18 18:40:41,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:41" (1/1) ... [2018-11-18 18:40:42,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 18:40:42,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 18:40:42,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 18:40:42,014 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 18:40:42,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:41" (1/1) ... [2018-11-18 18:40:42,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:41" (1/1) ... [2018-11-18 18:40:42,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:41" (1/1) ... [2018-11-18 18:40:42,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:41" (1/1) ... [2018-11-18 18:40:42,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:41" (1/1) ... [2018-11-18 18:40:42,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:41" (1/1) ... [2018-11-18 18:40:42,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:41" (1/1) ... [2018-11-18 18:40:42,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 18:40:42,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 18:40:42,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 18:40:42,039 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 18:40:42,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ece5f653-131c-4a2a-9990-691c3b8b3180/bin-2019/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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:10000 [2018-11-18 18:40:42,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 18:40:42,077 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2018-11-18 18:40:42,077 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2018-11-18 18:40:42,077 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2018-11-18 18:40:42,077 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2018-11-18 18:40:42,077 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2018-11-18 18:40:42,077 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2018-11-18 18:40:42,077 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2018-11-18 18:40:42,078 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2018-11-18 18:40:42,078 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2018-11-18 18:40:42,078 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2018-11-18 18:40:42,078 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2018-11-18 18:40:42,078 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2018-11-18 18:40:42,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 18:40:42,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 18:40:42,913 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 18:40:42,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:40:42 BoogieIcfgContainer [2018-11-18 18:40:42,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 18:40:42,914 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-18 18:40:42,914 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-18 18:40:42,924 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-18 18:40:42,924 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:40:42" (1/1) ... [2018-11-18 18:40:42,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 18:40:42,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:42,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 52 states and 69 transitions. [2018-11-18 18:40:42,961 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 69 transitions. [2018-11-18 18:40:42,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 18:40:42,967 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:43,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:40:43,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:43,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 52 states and 66 transitions. [2018-11-18 18:40:43,128 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2018-11-18 18:40:43,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 18:40:43,129 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:40:43,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:43,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 55 states and 70 transitions. [2018-11-18 18:40:43,233 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2018-11-18 18:40:43,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 18:40:43,234 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:43,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:40:43,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:43,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 65 states and 89 transitions. [2018-11-18 18:40:43,473 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 89 transitions. [2018-11-18 18:40:43,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 18:40:43,475 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:40:43,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:43,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 66 states and 90 transitions. [2018-11-18 18:40:43,531 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2018-11-18 18:40:43,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 18:40:43,532 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:40:43,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:43,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 67 states and 91 transitions. [2018-11-18 18:40:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2018-11-18 18:40:43,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 18:40:43,591 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:43,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:40:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 78 states and 113 transitions. [2018-11-18 18:40:43,892 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 113 transitions. [2018-11-18 18:40:43,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 18:40:43,893 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:40:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 96 states and 148 transitions. [2018-11-18 18:40:44,427 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 148 transitions. [2018-11-18 18:40:44,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 18:40:44,428 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 18:40:44,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:44,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 98 states and 150 transitions. [2018-11-18 18:40:44,496 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 150 transitions. [2018-11-18 18:40:44,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 18:40:44,497 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:40:44,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:44,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 99 states and 151 transitions. [2018-11-18 18:40:44,561 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 151 transitions. [2018-11-18 18:40:44,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 18:40:44,562 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:40:44,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:44,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 100 states and 152 transitions. [2018-11-18 18:40:44,662 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 152 transitions. [2018-11-18 18:40:44,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 18:40:44,664 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:40:45,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:45,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 107 states and 162 transitions. [2018-11-18 18:40:45,117 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 162 transitions. [2018-11-18 18:40:45,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 18:40:45,118 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 18:40:45,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:45,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 116 states and 182 transitions. [2018-11-18 18:40:45,682 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 182 transitions. [2018-11-18 18:40:45,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-18 18:40:45,683 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:45,774 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 18:40:45,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:45,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 123 states and 196 transitions. [2018-11-18 18:40:45,956 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 196 transitions. [2018-11-18 18:40:45,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-18 18:40:45,957 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 18:40:45,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 121 states and 192 transitions. [2018-11-18 18:40:46,001 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 192 transitions. [2018-11-18 18:40:46,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-18 18:40:46,002 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:46,055 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 18:40:46,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:46,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 138 states and 223 transitions. [2018-11-18 18:40:46,772 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 223 transitions. [2018-11-18 18:40:46,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-18 18:40:46,775 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:46,803 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 18:40:46,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:46,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 140 states and 227 transitions. [2018-11-18 18:40:46,976 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 227 transitions. [2018-11-18 18:40:46,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-18 18:40:46,977 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 18:40:48,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:48,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 160 states and 281 transitions. [2018-11-18 18:40:48,112 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 281 transitions. [2018-11-18 18:40:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-18 18:40:48,113 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 18:40:48,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:48,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 161 states and 282 transitions. [2018-11-18 18:40:48,162 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 282 transitions. [2018-11-18 18:40:48,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-18 18:40:48,163 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 18:40:48,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 162 states and 283 transitions. [2018-11-18 18:40:48,230 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 283 transitions. [2018-11-18 18:40:48,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-18 18:40:48,232 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:48,257 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 18:40:48,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:48,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 172 states and 307 transitions. [2018-11-18 18:40:48,572 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 307 transitions. [2018-11-18 18:40:48,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-18 18:40:48,573 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 18:40:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:49,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 184 states and 336 transitions. [2018-11-18 18:40:49,014 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 336 transitions. [2018-11-18 18:40:49,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-18 18:40:49,016 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 18:40:49,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:49,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 185 states and 337 transitions. [2018-11-18 18:40:49,068 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 337 transitions. [2018-11-18 18:40:49,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-18 18:40:49,070 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:49,098 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 18:40:49,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:49,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 186 states and 338 transitions. [2018-11-18 18:40:49,136 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 338 transitions. [2018-11-18 18:40:49,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-18 18:40:49,137 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 18:40:50,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:50,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 195 states and 356 transitions. [2018-11-18 18:40:50,020 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 356 transitions. [2018-11-18 18:40:50,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-18 18:40:50,021 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 18:40:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 196 states and 357 transitions. [2018-11-18 18:40:50,065 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 357 transitions. [2018-11-18 18:40:50,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-18 18:40:50,066 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 18:40:52,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 215 states and 408 transitions. [2018-11-18 18:40:52,864 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 408 transitions. [2018-11-18 18:40:52,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-18 18:40:52,866 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 18:40:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 18:40:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 18:40:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 18:40:53,247 WARN L493 CodeCheckObserver]: This program is UNSAFE, Check terminated with 27 iterations. [2018-11-18 18:40:53,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 18.11 06:40:53 ImpRootNode [2018-11-18 18:40:53,378 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-18 18:40:53,378 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 18:40:53,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 18:40:53,379 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 18:40:53,379 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:40:42" (3/4) ... [2018-11-18 18:40:53,381 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 18:40:53,460 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ece5f653-131c-4a2a-9990-691c3b8b3180/bin-2019/ukojak/witness.graphml [2018-11-18 18:40:53,460 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 18:40:53,460 INFO L168 Benchmark]: Toolchain (without parser) took 11842.49 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 396.9 MB). Free memory was 956.6 MB in the beginning and 897.7 MB in the end (delta: 58.9 MB). Peak memory consumption was 455.8 MB. Max. memory is 11.5 GB. [2018-11-18 18:40:53,461 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 18:40:53,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. [2018-11-18 18:40:53,461 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 18:40:53,462 INFO L168 Benchmark]: Boogie Preprocessor took 24.79 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-18 18:40:53,462 INFO L168 Benchmark]: RCFGBuilder took 875.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 81.1 MB). Peak memory consumption was 81.1 MB. Max. memory is 11.5 GB. [2018-11-18 18:40:53,462 INFO L168 Benchmark]: CodeCheck took 10463.99 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 250.6 MB). Free memory was 1.0 GB in the beginning and 918.9 MB in the end (delta: 130.5 MB). Peak memory consumption was 381.1 MB. Max. memory is 11.5 GB. [2018-11-18 18:40:53,462 INFO L168 Benchmark]: Witness Printer took 81.33 ms. Allocated memory is still 1.4 GB. Free memory was 918.9 MB in the beginning and 897.7 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2018-11-18 18:40:53,463 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 7 procedures, 81 locations, 1 error locations. UNSAFE Result, 10.3s OverallTime, 27 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1487242492 SDtfs, 570899074 SDslu, 853254820 SDs, 0 SdLazy, 613288342 SolverSat, 161287644 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10007 GetRequests, 9745 SyntacticMatches, 22 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24053 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1034 NumberOfCodeBlocks, 1034 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 952 ConstructedInterpolants, 0 QuantifiedInterpolants, 91797 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 26 InterpolantComputations, 21 PerfectInterpolantSequences, 243/256 InterpolantCoveringCapability, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 887]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L337] FCALL "i > 0 && i <= this->argsCount" [L337] FCALL "libacc.c" [L338] FCALL "__utac__get_this_arg" [L344] FCALL "i > 0 && i <= this->argsCount" [L344] FCALL "libacc.c" [L345] FCALL "__utac__get_this_arg" [L383] FCALL "i > 0 && i <= this->argsCount" [L383] FCALL "libacc.c" [L384] FCALL "__utac__get_this_argtype" [L390] FCALL "i > 0 && i <= this->argsCount" [L390] FCALL "libacc.c" [L391] FCALL "__utac__get_this_argtype" [L532] FCALL "Env(Water:%i" [L533] FCALL ",Meth:" [L537] FCALL "CRIT" [L541] FCALL "OK" [L545] FCALL ")" [L698] FCALL "Pump(System:" [L702] FCALL "On" [L706] FCALL "Off" [L710] FCALL ",Pump:" [L714] FCALL "On" [L718] FCALL "Off" [L722] FCALL ") " [L724] FCALL "\n" [L480] int waterLevel = 1; [L481] int methaneLevelCritical = 0; [L578] int pumpRunning = 0; [L579] int systemActive = 1; [L749] int cleanupTimeShifts = 4; [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L825] int retValue_acc ; [L826] int tmp ; [L830] FCALL select_helpers() [L831] FCALL select_features() [L832] CALL, EXPR valid_product() [L874] int retValue_acc ; [L877] retValue_acc = 1 [L878] RET return (retValue_acc); [L832] EXPR valid_product() [L832] tmp = valid_product() [L834] COND TRUE \read(tmp) [L836] FCALL setup() [L837] CALL runTest() [L816] CALL test() [L411] int splverifierCounter ; [L412] int tmp ; [L413] int tmp___0 ; [L414] int tmp___1 ; [L415] int tmp___2 ; [L418] splverifierCounter = 0 VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L420] COND TRUE 1 VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L422] COND TRUE splverifierCounter < 4 [L428] tmp = __VERIFIER_nondet_int() [L430] COND TRUE \read(tmp) VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L432] CALL waterRise() VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L498] COND TRUE waterLevel < 2 [L499] RET waterLevel = waterLevel + 1 [L432] waterRise() VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L438] tmp___0 = __VERIFIER_nondet_int() [L440] COND FALSE !(\read(tmp___0)) VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L448] tmp___2 = __VERIFIER_nondet_int() [L450] COND FALSE !(\read(tmp___2)) [L454] tmp___1 = __VERIFIER_nondet_int() [L456] COND TRUE \read(tmp___1) VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L463] CALL timeShift() VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L586] COND FALSE !(\read(pumpRunning)) VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L593] COND TRUE \read(systemActive) [L595] CALL processEnvironment() [L615] int tmp ; VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L618] COND TRUE ! pumpRunning [L620] CALL, EXPR isHighWaterLevel() [L730] int retValue_acc ; [L731] int tmp ; [L732] int tmp___0 ; [L736] CALL, EXPR isHighWaterSensorDry() [L560] int retValue_acc ; [L563] COND FALSE !(waterLevel < 2) [L567] retValue_acc = 0 [L568] RET return (retValue_acc); [L736] EXPR isHighWaterSensorDry() [L736] tmp = isHighWaterSensorDry() [L738] COND FALSE !(\read(tmp)) [L741] tmp___0 = 1 [L743] retValue_acc = tmp___0 [L744] RET return (retValue_acc); [L620] EXPR isHighWaterLevel() [L620] tmp = isHighWaterLevel() [L622] COND TRUE \read(tmp) [L624] CALL activatePump() [L649] int tmp ; [L653] CALL, EXPR isMethaneAlarm() [L674] int retValue_acc ; VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L678] CALL, EXPR isMethaneLevelCritical() VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] RET return (retValue_acc); [L678] EXPR isMethaneLevelCritical() VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L678] retValue_acc = isMethaneLevelCritical() [L680] RET return (retValue_acc); [L653] EXPR isMethaneAlarm() [L653] tmp = isMethaneAlarm() [L655] COND FALSE !(\read(tmp)) [L659] CALL activatePump__wrappee__highWaterSensor() [L643] RET pumpRunning = 1 [L659] RET activatePump__wrappee__highWaterSensor() [L624] RET activatePump() [L595] processEnvironment() [L601] CALL __utac_acc__Specification1_spec__1() [L893] int tmp ; [L894] int tmp___0 ; VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L898] CALL, EXPR isMethaneLevelCritical() VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] RET return (retValue_acc); [L898] EXPR isMethaneLevelCritical() VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L898] tmp = isMethaneLevelCritical() [L900] COND FALSE, RET !(\read(tmp)) VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L601] RET __utac_acc__Specification1_spec__1() [L463] timeShift() VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L420] COND TRUE 1 VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L422] COND TRUE splverifierCounter < 4 [L428] tmp = __VERIFIER_nondet_int() [L430] COND FALSE !(\read(tmp)) VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L438] tmp___0 = __VERIFIER_nondet_int() [L440] COND TRUE \read(tmp___0) VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L442] CALL changeMethaneLevel() VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L510] COND FALSE !(\read(methaneLevelCritical)) [L513] RET methaneLevelCritical = 1 [L442] changeMethaneLevel() VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L448] tmp___2 = __VERIFIER_nondet_int() [L450] COND FALSE !(\read(tmp___2)) [L454] tmp___1 = __VERIFIER_nondet_int() [L456] COND TRUE \read(tmp___1) VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L463] CALL timeShift() VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L586] COND TRUE \read(pumpRunning) [L588] CALL lowerWaterLevel() [L486] COND TRUE waterLevel > 0 [L487] RET waterLevel = waterLevel - 1 [L588] lowerWaterLevel() [L593] COND TRUE \read(systemActive) [L595] CALL processEnvironment() [L615] int tmp ; VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L618] COND FALSE !(! pumpRunning) VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L633] RET, FCALL processEnvironment__wrappee__base() VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L595] processEnvironment() [L601] CALL __utac_acc__Specification1_spec__1() [L893] int tmp ; [L894] int tmp___0 ; VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L898] CALL, EXPR isMethaneLevelCritical() VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] RET return (retValue_acc); [L898] EXPR isMethaneLevelCritical() VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L898] tmp = isMethaneLevelCritical() [L900] COND TRUE \read(tmp) [L902] CALL, EXPR isPumpRunning() [L685] int retValue_acc ; [L688] retValue_acc = pumpRunning [L689] RET return (retValue_acc); [L902] EXPR isPumpRunning() [L902] tmp___0 = isPumpRunning() [L904] COND TRUE \read(tmp___0) [L906] CALL __automaton_fail() [L887] __VERIFIER_error() VAL [") "={39:0}, ")"={12:0}, ",Meth:"={16:0}, ",Pump:"={38:0}, "\n"={37:0}, "__utac__get_this_arg"={26:0}, "__utac__get_this_arg"={29:0}, "__utac__get_this_argtype"={18:0}, "__utac__get_this_argtype"={22:0}, "CRIT"={15:0}, "Env(Water:%i"={17:0}, "i > 0 && i <= this->argsCount"={28:0}, "i > 0 && i <= this->argsCount"={24:0}, "i > 0 && i <= this->argsCount"={33:0}, "i > 0 && i <= this->argsCount"={20:0}, "libacc.c"={27:0}, "libacc.c"={19:0}, "libacc.c"={31:0}, "libacc.c"={23:0}, "Off"={34:0}, "Off"={36:0}, "OK"={14:0}, "On"={11:0}, "On"={35:0}, "Pump(System:"={8:0}, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 356.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.79 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 875.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 81.1 MB). Peak memory consumption was 81.1 MB. Max. memory is 11.5 GB. * CodeCheck took 10463.99 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 250.6 MB). Free memory was 1.0 GB in the beginning and 918.9 MB in the end (delta: 130.5 MB). Peak memory consumption was 381.1 MB. Max. memory is 11.5 GB. * Witness Printer took 81.33 ms. Allocated memory is still 1.4 GB. Free memory was 918.9 MB in the beginning and 897.7 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...