./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product47_false-unreach-call_false-termination.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1a0b5aea-3142-4968-8f9c-fa49a76af279/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1a0b5aea-3142-4968-8f9c-fa49a76af279/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1a0b5aea-3142-4968-8f9c-fa49a76af279/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1a0b5aea-3142-4968-8f9c-fa49a76af279/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product47_false-unreach-call_false-termination.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1a0b5aea-3142-4968-8f9c-fa49a76af279/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1a0b5aea-3142-4968-8f9c-fa49a76af279/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8425c566d51ac72c4c499354b129f4f120e9c3b0 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 16:26:34,481 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 16:26:34,482 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 16:26:34,488 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 16:26:34,488 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 16:26:34,489 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 16:26:34,490 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 16:26:34,490 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 16:26:34,491 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 16:26:34,492 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 16:26:34,492 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 16:26:34,492 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 16:26:34,493 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 16:26:34,493 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 16:26:34,494 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 16:26:34,494 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 16:26:34,495 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 16:26:34,495 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 16:26:34,496 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 16:26:34,497 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 16:26:34,498 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 16:26:34,498 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 16:26:34,499 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 16:26:34,500 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 16:26:34,500 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 16:26:34,500 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 16:26:34,501 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 16:26:34,501 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 16:26:34,501 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 16:26:34,502 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 16:26:34,502 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 16:26:34,503 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 16:26:34,503 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 16:26:34,503 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 16:26:34,503 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 16:26:34,504 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 16:26:34,504 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1a0b5aea-3142-4968-8f9c-fa49a76af279/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-12-08 16:26:34,512 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 16:26:34,512 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 16:26:34,512 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 16:26:34,512 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 16:26:34,513 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 16:26:34,513 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-08 16:26:34,513 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-08 16:26:34,513 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-08 16:26:34,513 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-08 16:26:34,513 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-08 16:26:34,513 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-08 16:26:34,513 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 16:26:34,513 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 16:26:34,513 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 16:26:34,514 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 16:26:34,514 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 16:26:34,514 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 16:26:34,514 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-08 16:26:34,514 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-08 16:26:34,514 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-08 16:26:34,514 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 16:26:34,514 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 16:26:34,514 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-08 16:26:34,514 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 16:26:34,514 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-08 16:26:34,515 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 16:26:34,515 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 16:26:34,515 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-08 16:26:34,515 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 16:26:34,515 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 16:26:34,515 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-08 16:26:34,515 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-08 16:26:34,516 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_1a0b5aea-3142-4968-8f9c-fa49a76af279/bin-2019/uautomizer 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(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8425c566d51ac72c4c499354b129f4f120e9c3b0 [2018-12-08 16:26:34,533 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 16:26:34,542 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 16:26:34,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 16:26:34,545 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 16:26:34,546 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 16:26:34,546 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1a0b5aea-3142-4968-8f9c-fa49a76af279/bin-2019/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product47_false-unreach-call_false-termination.cil.c [2018-12-08 16:26:34,588 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1a0b5aea-3142-4968-8f9c-fa49a76af279/bin-2019/uautomizer/data/e84d061cc/d886cfa0301b4e4ea7450eb6a7fb4c2d/FLAG317437a7f [2018-12-08 16:26:35,023 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 16:26:35,024 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1a0b5aea-3142-4968-8f9c-fa49a76af279/sv-benchmarks/c/product-lines/minepump_spec3_product47_false-unreach-call_false-termination.cil.c [2018-12-08 16:26:35,029 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1a0b5aea-3142-4968-8f9c-fa49a76af279/bin-2019/uautomizer/data/e84d061cc/d886cfa0301b4e4ea7450eb6a7fb4c2d/FLAG317437a7f [2018-12-08 16:26:35,038 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1a0b5aea-3142-4968-8f9c-fa49a76af279/bin-2019/uautomizer/data/e84d061cc/d886cfa0301b4e4ea7450eb6a7fb4c2d [2018-12-08 16:26:35,040 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 16:26:35,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 16:26:35,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 16:26:35,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 16:26:35,043 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 16:26:35,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 04:26:35" (1/1) ... [2018-12-08 16:26:35,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d622ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:26:35, skipping insertion in model container [2018-12-08 16:26:35,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 04:26:35" (1/1) ... [2018-12-08 16:26:35,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 16:26:35,069 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 16:26:35,213 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 16:26:35,254 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 16:26:35,295 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 16:26:35,311 INFO L195 MainTranslator]: Completed translation [2018-12-08 16:26:35,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:26:35 WrapperNode [2018-12-08 16:26:35,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 16:26:35,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 16:26:35,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 16:26:35,312 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 16:26:35,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:26:35" (1/1) ... [2018-12-08 16:26:35,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:26:35" (1/1) ... [2018-12-08 16:26:35,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 16:26:35,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 16:26:35,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 16:26:35,350 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 16:26:35,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:26:35" (1/1) ... [2018-12-08 16:26:35,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:26:35" (1/1) ... [2018-12-08 16:26:35,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:26:35" (1/1) ... [2018-12-08 16:26:35,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:26:35" (1/1) ... [2018-12-08 16:26:35,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:26:35" (1/1) ... [2018-12-08 16:26:35,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:26:35" (1/1) ... [2018-12-08 16:26:35,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:26:35" (1/1) ... [2018-12-08 16:26:35,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 16:26:35,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 16:26:35,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 16:26:35,374 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 16:26:35,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:26:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1a0b5aea-3142-4968-8f9c-fa49a76af279/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 16:26:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 16:26:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-08 16:26:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 16:26:35,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 16:26:35,756 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 16:26:35,756 INFO L280 CfgBuilder]: Removed 202 assue(true) statements. [2018-12-08 16:26:35,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:26:35 BoogieIcfgContainer [2018-12-08 16:26:35,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 16:26:35,757 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-08 16:26:35,757 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-08 16:26:35,759 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-08 16:26:35,760 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 16:26:35,760 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.12 04:26:35" (1/3) ... [2018-12-08 16:26:35,760 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26863f15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 04:26:35, skipping insertion in model container [2018-12-08 16:26:35,760 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 16:26:35,760 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:26:35" (2/3) ... [2018-12-08 16:26:35,761 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26863f15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 04:26:35, skipping insertion in model container [2018-12-08 16:26:35,761 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 16:26:35,761 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:26:35" (3/3) ... [2018-12-08 16:26:35,762 INFO L375 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product47_false-unreach-call_false-termination.cil.c [2018-12-08 16:26:35,792 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 16:26:35,792 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-08 16:26:35,792 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-08 16:26:35,792 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-08 16:26:35,792 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 16:26:35,793 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 16:26:35,793 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-08 16:26:35,793 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 16:26:35,793 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-08 16:26:35,803 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states. [2018-12-08 16:26:35,819 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2018-12-08 16:26:35,819 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 16:26:35,819 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 16:26:35,824 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-08 16:26:35,825 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:26:35,825 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-08 16:26:35,825 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states. [2018-12-08 16:26:35,828 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2018-12-08 16:26:35,828 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 16:26:35,828 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 16:26:35,829 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-08 16:26:35,829 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:26:35,832 INFO L794 eck$LassoCheckResult]: Stem: 82#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;call #t~string20.base, #t~string20.offset := #Ultimate.alloc(30);call #t~string21.base, #t~string21.offset := #Ultimate.alloc(9);call #t~string22.base, #t~string22.offset := #Ultimate.alloc(21);call #t~string23.base, #t~string23.offset := #Ultimate.alloc(30);call #t~string24.base, #t~string24.offset := #Ultimate.alloc(9);call #t~string25.base, #t~string25.offset := #Ultimate.alloc(21);call #t~string29.base, #t~string29.offset := #Ultimate.alloc(30);call #t~string30.base, #t~string30.offset := #Ultimate.alloc(9);call #t~string31.base, #t~string31.offset := #Ultimate.alloc(25);call #t~string32.base, #t~string32.offset := #Ultimate.alloc(30);call #t~string33.base, #t~string33.offset := #Ultimate.alloc(9);call #t~string34.base, #t~string34.offset := #Ultimate.alloc(25);~pumpRunning~0 := 0;~systemActive~0 := 1;call #t~string46.base, #t~string46.offset := #Ultimate.alloc(13);call #t~string48.base, #t~string48.offset := #Ultimate.alloc(3);call write~init~int(79, #t~string48.base, #t~string48.offset, 1);call write~init~int(110, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 2 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.alloc(4);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(102, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(102, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 3 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.alloc(7);call write~init~int(44, #t~string52.base, #t~string52.offset, 1);call write~init~int(80, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(117, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(109, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(112, #t~string52.base, 4 + #t~string52.offset, 1);call write~init~int(58, #t~string52.base, 5 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 6 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.alloc(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(110, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.alloc(4);call write~init~int(79, #t~string56.base, #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 3 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.alloc(3);call write~init~int(41, #t~string58.base, #t~string58.offset, 1);call write~init~int(32, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.alloc(2);call write~init~int(10, #t~string60.base, #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 1 + #t~string60.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;call #t~string63.base, #t~string63.offset := #Ultimate.alloc(13);call #t~string65.base, #t~string65.offset := #Ultimate.alloc(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(77, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(101, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(116, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(104, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.alloc(5);call write~init~int(67, #t~string67.base, #t~string67.offset, 1);call write~init~int(82, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(73, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(84, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 4 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.alloc(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(75, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.alloc(2);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 1 + #t~string71.offset, 1); 11#L-1true havoc main_#res;havoc main_#t~ret0, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 3#L175true havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 37#L183true main_#t~ret0 := valid_product_#res;main_~tmp~0 := main_#t~ret0;havoc main_#t~ret0; 34#L139true assume 0 != main_~tmp~0; 116#L112true havoc test_#t~nondet37, test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 64#L950-1true [2018-12-08 16:26:35,832 INFO L796 eck$LassoCheckResult]: Loop: 64#L950-1true assume !false; 7#L566true assume test_~splverifierCounter~0 < 4; 77#L567true test_~tmp~4 := test_#t~nondet37;havoc test_#t~nondet37; 101#L575true assume !(0 != test_~tmp~4); 81#L575-1true test_~tmp___0~0 := test_#t~nondet38;havoc test_#t~nondet38; 12#L585true assume !(0 != test_~tmp___0~0); 16#L585-1true test_~tmp___2~0 := test_#t~nondet39;havoc test_#t~nondet39; 53#L595true assume 0 != test_~tmp___2~0; 42#L601-1true assume !(0 != ~pumpRunning~0); 35#L637true assume !(0 != ~systemActive~0); 72#L644true havoc __utac_acc__Specification3_spec__1_#t~ret72, __utac_acc__Specification3_spec__1_#t~ret73, __utac_acc__Specification3_spec__1_#t~ret74, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 57#L884-3true __utac_acc__Specification3_spec__1_#t~ret72 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret72;havoc __utac_acc__Specification3_spec__1_#t~ret72; 93#L944true assume 0 != __utac_acc__Specification3_spec__1_~tmp~9; 64#L950-1true [2018-12-08 16:26:35,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:26:35,836 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2018-12-08 16:26:35,837 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 16:26:35,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 16:26:35,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:35,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:26:35,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:35,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:26:35,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1670724674, now seen corresponding path program 1 times [2018-12-08 16:26:35,960 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 16:26:35,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 16:26:35,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:35,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:26:35,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:35,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:26:35,969 INFO L82 PathProgramCache]: Analyzing trace with hash 43554264, now seen corresponding path program 1 times [2018-12-08 16:26:35,969 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 16:26:35,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 16:26:35,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:35,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:26:35,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:26:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:26:36,047 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:26:36,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 16:26:36,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 16:26:36,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-08 16:26:36,108 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 6 states. [2018-12-08 16:26:36,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:26:36,191 INFO L93 Difference]: Finished difference Result 318 states and 453 transitions. [2018-12-08 16:26:36,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 16:26:36,193 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 318 states and 453 transitions. [2018-12-08 16:26:36,197 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 205 [2018-12-08 16:26:36,201 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 318 states to 297 states and 432 transitions. [2018-12-08 16:26:36,202 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 297 [2018-12-08 16:26:36,203 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 297 [2018-12-08 16:26:36,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 297 states and 432 transitions. [2018-12-08 16:26:36,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 16:26:36,205 INFO L705 BuchiCegarLoop]: Abstraction has 297 states and 432 transitions. [2018-12-08 16:26:36,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states and 432 transitions. [2018-12-08 16:26:36,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 174. [2018-12-08 16:26:36,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-12-08 16:26:36,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 252 transitions. [2018-12-08 16:26:36,230 INFO L728 BuchiCegarLoop]: Abstraction has 174 states and 252 transitions. [2018-12-08 16:26:36,230 INFO L608 BuchiCegarLoop]: Abstraction has 174 states and 252 transitions. [2018-12-08 16:26:36,230 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-08 16:26:36,231 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 174 states and 252 transitions. [2018-12-08 16:26:36,232 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 120 [2018-12-08 16:26:36,232 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 16:26:36,232 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 16:26:36,232 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-08 16:26:36,232 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:26:36,233 INFO L794 eck$LassoCheckResult]: Stem: 579#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;call #t~string20.base, #t~string20.offset := #Ultimate.alloc(30);call #t~string21.base, #t~string21.offset := #Ultimate.alloc(9);call #t~string22.base, #t~string22.offset := #Ultimate.alloc(21);call #t~string23.base, #t~string23.offset := #Ultimate.alloc(30);call #t~string24.base, #t~string24.offset := #Ultimate.alloc(9);call #t~string25.base, #t~string25.offset := #Ultimate.alloc(21);call #t~string29.base, #t~string29.offset := #Ultimate.alloc(30);call #t~string30.base, #t~string30.offset := #Ultimate.alloc(9);call #t~string31.base, #t~string31.offset := #Ultimate.alloc(25);call #t~string32.base, #t~string32.offset := #Ultimate.alloc(30);call #t~string33.base, #t~string33.offset := #Ultimate.alloc(9);call #t~string34.base, #t~string34.offset := #Ultimate.alloc(25);~pumpRunning~0 := 0;~systemActive~0 := 1;call #t~string46.base, #t~string46.offset := #Ultimate.alloc(13);call #t~string48.base, #t~string48.offset := #Ultimate.alloc(3);call write~init~int(79, #t~string48.base, #t~string48.offset, 1);call write~init~int(110, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 2 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.alloc(4);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(102, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(102, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 3 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.alloc(7);call write~init~int(44, #t~string52.base, #t~string52.offset, 1);call write~init~int(80, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(117, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(109, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(112, #t~string52.base, 4 + #t~string52.offset, 1);call write~init~int(58, #t~string52.base, 5 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 6 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.alloc(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(110, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.alloc(4);call write~init~int(79, #t~string56.base, #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 3 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.alloc(3);call write~init~int(41, #t~string58.base, #t~string58.offset, 1);call write~init~int(32, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.alloc(2);call write~init~int(10, #t~string60.base, #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 1 + #t~string60.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;call #t~string63.base, #t~string63.offset := #Ultimate.alloc(13);call #t~string65.base, #t~string65.offset := #Ultimate.alloc(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(77, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(101, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(116, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(104, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.alloc(5);call write~init~int(67, #t~string67.base, #t~string67.offset, 1);call write~init~int(82, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(73, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(84, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 4 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.alloc(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(75, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.alloc(2);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 1 + #t~string71.offset, 1); 486#L-1 havoc main_#res;havoc main_#t~ret0, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 470#L175 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 471#L183 main_#t~ret0 := valid_product_#res;main_~tmp~0 := main_#t~ret0;havoc main_#t~ret0; 531#L139 assume 0 != main_~tmp~0; 532#L112 havoc test_#t~nondet37, test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 509#L950-1 [2018-12-08 16:26:36,233 INFO L796 eck$LassoCheckResult]: Loop: 509#L950-1 assume !false; 478#L566 assume test_~splverifierCounter~0 < 4; 479#L567 test_~tmp~4 := test_#t~nondet37;havoc test_#t~nondet37; 576#L575 assume !(0 != test_~tmp~4); 570#L575-1 test_~tmp___0~0 := test_#t~nondet38;havoc test_#t~nondet38; 487#L585 assume !(0 != test_~tmp___0~0); 488#L585-1 test_~tmp___2~0 := test_#t~nondet39;havoc test_#t~nondet39; 497#L595 assume 0 != test_~tmp___2~0; 539#L601-1 assume !(0 != ~pumpRunning~0); 533#L637 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret42, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 510#L695 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret41, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 512#L669-1 assume !(0 == ~pumpRunning~0); 473#L644 havoc __utac_acc__Specification3_spec__1_#t~ret72, __utac_acc__Specification3_spec__1_#t~ret73, __utac_acc__Specification3_spec__1_#t~ret74, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 557#L884-3 __utac_acc__Specification3_spec__1_#t~ret72 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret72;havoc __utac_acc__Specification3_spec__1_#t~ret72; 558#L944 assume 0 != __utac_acc__Specification3_spec__1_~tmp~9; 509#L950-1 [2018-12-08 16:26:36,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:26:36,233 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2018-12-08 16:26:36,233 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 16:26:36,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 16:26:36,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:26:36,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:36,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:26:36,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1966055744, now seen corresponding path program 1 times [2018-12-08 16:26:36,264 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 16:26:36,265 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 16:26:36,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,265 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 16:26:36,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:26:36,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:26:36,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:26:36,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 16:26:36,273 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-12-08 16:26:36,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 16:26:36,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 16:26:36,274 INFO L87 Difference]: Start difference. First operand 174 states and 252 transitions. cyclomatic complexity: 81 Second operand 3 states. [2018-12-08 16:26:36,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:26:36,334 INFO L93 Difference]: Finished difference Result 219 states and 301 transitions. [2018-12-08 16:26:36,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 16:26:36,335 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 219 states and 301 transitions. [2018-12-08 16:26:36,336 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 154 [2018-12-08 16:26:36,337 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 219 states to 219 states and 301 transitions. [2018-12-08 16:26:36,338 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 219 [2018-12-08 16:26:36,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 219 [2018-12-08 16:26:36,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 219 states and 301 transitions. [2018-12-08 16:26:36,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 16:26:36,339 INFO L705 BuchiCegarLoop]: Abstraction has 219 states and 301 transitions. [2018-12-08 16:26:36,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states and 301 transitions. [2018-12-08 16:26:36,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-12-08 16:26:36,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-12-08 16:26:36,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 301 transitions. [2018-12-08 16:26:36,344 INFO L728 BuchiCegarLoop]: Abstraction has 219 states and 301 transitions. [2018-12-08 16:26:36,344 INFO L608 BuchiCegarLoop]: Abstraction has 219 states and 301 transitions. [2018-12-08 16:26:36,344 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-08 16:26:36,344 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 219 states and 301 transitions. [2018-12-08 16:26:36,345 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 154 [2018-12-08 16:26:36,345 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 16:26:36,345 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 16:26:36,345 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-08 16:26:36,345 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:26:36,346 INFO L794 eck$LassoCheckResult]: Stem: 987#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;call #t~string20.base, #t~string20.offset := #Ultimate.alloc(30);call #t~string21.base, #t~string21.offset := #Ultimate.alloc(9);call #t~string22.base, #t~string22.offset := #Ultimate.alloc(21);call #t~string23.base, #t~string23.offset := #Ultimate.alloc(30);call #t~string24.base, #t~string24.offset := #Ultimate.alloc(9);call #t~string25.base, #t~string25.offset := #Ultimate.alloc(21);call #t~string29.base, #t~string29.offset := #Ultimate.alloc(30);call #t~string30.base, #t~string30.offset := #Ultimate.alloc(9);call #t~string31.base, #t~string31.offset := #Ultimate.alloc(25);call #t~string32.base, #t~string32.offset := #Ultimate.alloc(30);call #t~string33.base, #t~string33.offset := #Ultimate.alloc(9);call #t~string34.base, #t~string34.offset := #Ultimate.alloc(25);~pumpRunning~0 := 0;~systemActive~0 := 1;call #t~string46.base, #t~string46.offset := #Ultimate.alloc(13);call #t~string48.base, #t~string48.offset := #Ultimate.alloc(3);call write~init~int(79, #t~string48.base, #t~string48.offset, 1);call write~init~int(110, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 2 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.alloc(4);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(102, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(102, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 3 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.alloc(7);call write~init~int(44, #t~string52.base, #t~string52.offset, 1);call write~init~int(80, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(117, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(109, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(112, #t~string52.base, 4 + #t~string52.offset, 1);call write~init~int(58, #t~string52.base, 5 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 6 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.alloc(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(110, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.alloc(4);call write~init~int(79, #t~string56.base, #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 3 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.alloc(3);call write~init~int(41, #t~string58.base, #t~string58.offset, 1);call write~init~int(32, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.alloc(2);call write~init~int(10, #t~string60.base, #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 1 + #t~string60.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;call #t~string63.base, #t~string63.offset := #Ultimate.alloc(13);call #t~string65.base, #t~string65.offset := #Ultimate.alloc(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(77, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(101, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(116, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(104, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.alloc(5);call write~init~int(67, #t~string67.base, #t~string67.offset, 1);call write~init~int(82, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(73, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(84, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 4 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.alloc(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(75, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.alloc(2);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 1 + #t~string71.offset, 1); 887#L-1 havoc main_#res;havoc main_#t~ret0, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 869#L175 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 870#L183 main_#t~ret0 := valid_product_#res;main_~tmp~0 := main_#t~ret0;havoc main_#t~ret0; 929#L139 assume 0 != main_~tmp~0; 930#L112 havoc test_#t~nondet37, test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 910#L950-1 [2018-12-08 16:26:36,346 INFO L796 eck$LassoCheckResult]: Loop: 910#L950-1 assume !false; 1059#L566 assume test_~splverifierCounter~0 < 4; 1060#L567 test_~tmp~4 := test_#t~nondet37;havoc test_#t~nondet37; 1085#L575 assume !(0 != test_~tmp~4); 1083#L575-1 test_~tmp___0~0 := test_#t~nondet38;havoc test_#t~nondet38; 1082#L585 assume !(0 != test_~tmp___0~0); 1080#L585-1 test_~tmp___2~0 := test_#t~nondet39;havoc test_#t~nondet39; 1078#L595 assume 0 != test_~tmp___2~0; 1077#L601-1 assume !(0 != ~pumpRunning~0); 931#L637 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret42, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 911#L695 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret41, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 912#L669-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret61, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 973#L924-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~11 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 919#L929-1 isHighWaterLevel_#t~ret61 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret61;havoc isHighWaterLevel_#t~ret61; 920#L814-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 1004#L814-5 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 988#L820-1 processEnvironment__wrappee__methaneQuery_#t~ret41 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~5 := processEnvironment__wrappee__methaneQuery_#t~ret41;havoc processEnvironment__wrappee__methaneQuery_#t~ret41; 921#L673-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5); 872#L644 havoc __utac_acc__Specification3_spec__1_#t~ret72, __utac_acc__Specification3_spec__1_#t~ret73, __utac_acc__Specification3_spec__1_#t~ret74, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 1063#L884-3 __utac_acc__Specification3_spec__1_#t~ret72 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret72;havoc __utac_acc__Specification3_spec__1_#t~ret72; 996#L944 assume 0 != __utac_acc__Specification3_spec__1_~tmp~9; 910#L950-1 [2018-12-08 16:26:36,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:26:36,346 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2018-12-08 16:26:36,346 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 16:26:36,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 16:26:36,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:26:36,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:36,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:26:36,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1687938738, now seen corresponding path program 1 times [2018-12-08 16:26:36,369 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 16:26:36,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 16:26:36,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,370 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 16:26:36,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:26:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:26:36,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:26:36,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 16:26:36,381 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-12-08 16:26:36,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 16:26:36,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 16:26:36,382 INFO L87 Difference]: Start difference. First operand 219 states and 301 transitions. cyclomatic complexity: 85 Second operand 4 states. [2018-12-08 16:26:36,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:26:36,436 INFO L93 Difference]: Finished difference Result 621 states and 843 transitions. [2018-12-08 16:26:36,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 16:26:36,436 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 621 states and 843 transitions. [2018-12-08 16:26:36,439 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 446 [2018-12-08 16:26:36,441 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 621 states to 621 states and 843 transitions. [2018-12-08 16:26:36,441 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 621 [2018-12-08 16:26:36,441 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 621 [2018-12-08 16:26:36,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 621 states and 843 transitions. [2018-12-08 16:26:36,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 16:26:36,443 INFO L705 BuchiCegarLoop]: Abstraction has 621 states and 843 transitions. [2018-12-08 16:26:36,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states and 843 transitions. [2018-12-08 16:26:36,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 231. [2018-12-08 16:26:36,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-12-08 16:26:36,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 313 transitions. [2018-12-08 16:26:36,449 INFO L728 BuchiCegarLoop]: Abstraction has 231 states and 313 transitions. [2018-12-08 16:26:36,449 INFO L608 BuchiCegarLoop]: Abstraction has 231 states and 313 transitions. [2018-12-08 16:26:36,449 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-08 16:26:36,449 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 231 states and 313 transitions. [2018-12-08 16:26:36,450 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 162 [2018-12-08 16:26:36,450 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 16:26:36,450 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 16:26:36,451 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-08 16:26:36,451 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:26:36,451 INFO L794 eck$LassoCheckResult]: Stem: 1838#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;call #t~string20.base, #t~string20.offset := #Ultimate.alloc(30);call #t~string21.base, #t~string21.offset := #Ultimate.alloc(9);call #t~string22.base, #t~string22.offset := #Ultimate.alloc(21);call #t~string23.base, #t~string23.offset := #Ultimate.alloc(30);call #t~string24.base, #t~string24.offset := #Ultimate.alloc(9);call #t~string25.base, #t~string25.offset := #Ultimate.alloc(21);call #t~string29.base, #t~string29.offset := #Ultimate.alloc(30);call #t~string30.base, #t~string30.offset := #Ultimate.alloc(9);call #t~string31.base, #t~string31.offset := #Ultimate.alloc(25);call #t~string32.base, #t~string32.offset := #Ultimate.alloc(30);call #t~string33.base, #t~string33.offset := #Ultimate.alloc(9);call #t~string34.base, #t~string34.offset := #Ultimate.alloc(25);~pumpRunning~0 := 0;~systemActive~0 := 1;call #t~string46.base, #t~string46.offset := #Ultimate.alloc(13);call #t~string48.base, #t~string48.offset := #Ultimate.alloc(3);call write~init~int(79, #t~string48.base, #t~string48.offset, 1);call write~init~int(110, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 2 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.alloc(4);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(102, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(102, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 3 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.alloc(7);call write~init~int(44, #t~string52.base, #t~string52.offset, 1);call write~init~int(80, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(117, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(109, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(112, #t~string52.base, 4 + #t~string52.offset, 1);call write~init~int(58, #t~string52.base, 5 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 6 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.alloc(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(110, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.alloc(4);call write~init~int(79, #t~string56.base, #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 3 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.alloc(3);call write~init~int(41, #t~string58.base, #t~string58.offset, 1);call write~init~int(32, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.alloc(2);call write~init~int(10, #t~string60.base, #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 1 + #t~string60.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;call #t~string63.base, #t~string63.offset := #Ultimate.alloc(13);call #t~string65.base, #t~string65.offset := #Ultimate.alloc(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(77, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(101, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(116, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(104, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.alloc(5);call write~init~int(67, #t~string67.base, #t~string67.offset, 1);call write~init~int(82, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(73, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(84, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 4 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.alloc(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(75, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.alloc(2);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 1 + #t~string71.offset, 1); 1737#L-1 havoc main_#res;havoc main_#t~ret0, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1719#L175 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 1720#L183 main_#t~ret0 := valid_product_#res;main_~tmp~0 := main_#t~ret0;havoc main_#t~ret0; 1780#L139 assume 0 != main_~tmp~0; 1781#L112 havoc test_#t~nondet37, test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1822#L950-1 [2018-12-08 16:26:36,451 INFO L796 eck$LassoCheckResult]: Loop: 1822#L950-1 assume !false; 1729#L566 assume test_~splverifierCounter~0 < 4; 1730#L567 test_~tmp~4 := test_#t~nondet37;havoc test_#t~nondet37; 1834#L575 assume !(0 != test_~tmp~4); 1827#L575-1 test_~tmp___0~0 := test_#t~nondet38;havoc test_#t~nondet38; 1738#L585 assume !(0 != test_~tmp___0~0); 1739#L585-1 test_~tmp___2~0 := test_#t~nondet39;havoc test_#t~nondet39; 1747#L595 assume 0 != test_~tmp___2~0; 1789#L601-1 assume !(0 != ~pumpRunning~0); 1790#L637 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret42, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 1762#L695 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret41, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 1763#L669-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret61, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 1825#L924-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~11 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 1880#L929-1 isHighWaterLevel_#t~ret61 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret61;havoc isHighWaterLevel_#t~ret61; 1878#L814-3 assume !(0 != isHighWaterLevel_~tmp~8);isHighWaterLevel_~tmp___0~1 := 1; 1859#L814-5 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 1839#L820-1 processEnvironment__wrappee__methaneQuery_#t~ret41 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~5 := processEnvironment__wrappee__methaneQuery_#t~ret41;havoc processEnvironment__wrappee__methaneQuery_#t~ret41; 1772#L673-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5); 1722#L644 havoc __utac_acc__Specification3_spec__1_#t~ret72, __utac_acc__Specification3_spec__1_#t~ret73, __utac_acc__Specification3_spec__1_#t~ret74, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 1811#L884-3 __utac_acc__Specification3_spec__1_#t~ret72 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret72;havoc __utac_acc__Specification3_spec__1_#t~ret72; 1812#L944 assume 0 != __utac_acc__Specification3_spec__1_~tmp~9; 1822#L950-1 [2018-12-08 16:26:36,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:26:36,451 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2018-12-08 16:26:36,451 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 16:26:36,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 16:26:36,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:26:36,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:36,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:26:36,472 INFO L82 PathProgramCache]: Analyzing trace with hash 87068624, now seen corresponding path program 1 times [2018-12-08 16:26:36,472 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 16:26:36,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 16:26:36,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,473 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 16:26:36,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:26:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:26:36,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:26:36,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 16:26:36,492 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-12-08 16:26:36,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 16:26:36,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 16:26:36,492 INFO L87 Difference]: Start difference. First operand 231 states and 313 transitions. cyclomatic complexity: 85 Second operand 5 states. [2018-12-08 16:26:36,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:26:36,584 INFO L93 Difference]: Finished difference Result 732 states and 988 transitions. [2018-12-08 16:26:36,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 16:26:36,585 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 732 states and 988 transitions. [2018-12-08 16:26:36,587 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 532 [2018-12-08 16:26:36,589 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 732 states to 732 states and 988 transitions. [2018-12-08 16:26:36,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 732 [2018-12-08 16:26:36,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 732 [2018-12-08 16:26:36,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 732 states and 988 transitions. [2018-12-08 16:26:36,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 16:26:36,591 INFO L705 BuchiCegarLoop]: Abstraction has 732 states and 988 transitions. [2018-12-08 16:26:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states and 988 transitions. [2018-12-08 16:26:36,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 249. [2018-12-08 16:26:36,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-12-08 16:26:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 331 transitions. [2018-12-08 16:26:36,597 INFO L728 BuchiCegarLoop]: Abstraction has 249 states and 331 transitions. [2018-12-08 16:26:36,597 INFO L608 BuchiCegarLoop]: Abstraction has 249 states and 331 transitions. [2018-12-08 16:26:36,597 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-08 16:26:36,597 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 249 states and 331 transitions. [2018-12-08 16:26:36,598 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 174 [2018-12-08 16:26:36,598 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 16:26:36,598 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 16:26:36,598 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-08 16:26:36,598 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:26:36,599 INFO L794 eck$LassoCheckResult]: Stem: 2819#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;call #t~string20.base, #t~string20.offset := #Ultimate.alloc(30);call #t~string21.base, #t~string21.offset := #Ultimate.alloc(9);call #t~string22.base, #t~string22.offset := #Ultimate.alloc(21);call #t~string23.base, #t~string23.offset := #Ultimate.alloc(30);call #t~string24.base, #t~string24.offset := #Ultimate.alloc(9);call #t~string25.base, #t~string25.offset := #Ultimate.alloc(21);call #t~string29.base, #t~string29.offset := #Ultimate.alloc(30);call #t~string30.base, #t~string30.offset := #Ultimate.alloc(9);call #t~string31.base, #t~string31.offset := #Ultimate.alloc(25);call #t~string32.base, #t~string32.offset := #Ultimate.alloc(30);call #t~string33.base, #t~string33.offset := #Ultimate.alloc(9);call #t~string34.base, #t~string34.offset := #Ultimate.alloc(25);~pumpRunning~0 := 0;~systemActive~0 := 1;call #t~string46.base, #t~string46.offset := #Ultimate.alloc(13);call #t~string48.base, #t~string48.offset := #Ultimate.alloc(3);call write~init~int(79, #t~string48.base, #t~string48.offset, 1);call write~init~int(110, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 2 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.alloc(4);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(102, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(102, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 3 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.alloc(7);call write~init~int(44, #t~string52.base, #t~string52.offset, 1);call write~init~int(80, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(117, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(109, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(112, #t~string52.base, 4 + #t~string52.offset, 1);call write~init~int(58, #t~string52.base, 5 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 6 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.alloc(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(110, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.alloc(4);call write~init~int(79, #t~string56.base, #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 3 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.alloc(3);call write~init~int(41, #t~string58.base, #t~string58.offset, 1);call write~init~int(32, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.alloc(2);call write~init~int(10, #t~string60.base, #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 1 + #t~string60.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;call #t~string63.base, #t~string63.offset := #Ultimate.alloc(13);call #t~string65.base, #t~string65.offset := #Ultimate.alloc(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(77, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(101, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(116, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(104, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.alloc(5);call write~init~int(67, #t~string67.base, #t~string67.offset, 1);call write~init~int(82, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(73, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(84, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 4 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.alloc(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(75, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.alloc(2);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 1 + #t~string71.offset, 1); 2714#L-1 havoc main_#res;havoc main_#t~ret0, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 2696#L175 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 2697#L183 main_#t~ret0 := valid_product_#res;main_~tmp~0 := main_#t~ret0;havoc main_#t~ret0; 2755#L139 assume 0 != main_~tmp~0; 2756#L112 havoc test_#t~nondet37, test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2797#L950-1 [2018-12-08 16:26:36,599 INFO L796 eck$LassoCheckResult]: Loop: 2797#L950-1 assume !false; 2798#L566 assume test_~splverifierCounter~0 < 4; 2812#L567 test_~tmp~4 := test_#t~nondet37;havoc test_#t~nondet37; 2813#L575 assume !(0 != test_~tmp~4); 2915#L575-1 test_~tmp___0~0 := test_#t~nondet38;havoc test_#t~nondet38; 2715#L585 assume !(0 != test_~tmp___0~0); 2716#L585-1 test_~tmp___2~0 := test_#t~nondet39;havoc test_#t~nondet39; 2781#L595 assume 0 != test_~tmp___2~0; 2765#L601-1 assume !(0 != ~pumpRunning~0); 2766#L637 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret42, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 2737#L695 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret41, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 2738#L669-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret61, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 2801#L924-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 2860#L929-1 isHighWaterLevel_#t~ret61 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret61;havoc isHighWaterLevel_#t~ret61; 2869#L814-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 2844#L814-5 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 2820#L820-1 processEnvironment__wrappee__methaneQuery_#t~ret41 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~5 := processEnvironment__wrappee__methaneQuery_#t~ret41;havoc processEnvironment__wrappee__methaneQuery_#t~ret41; 2821#L673-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5); 2699#L644 havoc __utac_acc__Specification3_spec__1_#t~ret72, __utac_acc__Specification3_spec__1_#t~ret73, __utac_acc__Specification3_spec__1_#t~ret74, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 2921#L884-3 __utac_acc__Specification3_spec__1_#t~ret72 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret72;havoc __utac_acc__Specification3_spec__1_#t~ret72; 2919#L944 assume 0 != __utac_acc__Specification3_spec__1_~tmp~9; 2797#L950-1 [2018-12-08 16:26:36,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:26:36,599 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 5 times [2018-12-08 16:26:36,599 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 16:26:36,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 16:26:36,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:26:36,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:36,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:26:36,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1926970188, now seen corresponding path program 1 times [2018-12-08 16:26:36,618 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 16:26:36,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 16:26:36,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 16:26:36,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:36,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:26:36,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1911925914, now seen corresponding path program 1 times [2018-12-08 16:26:36,626 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 16:26:36,626 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 16:26:36,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:26:36,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:26:36,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:26:36,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:26:36,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 16:26:36,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 16:26:36,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 16:26:36,759 INFO L87 Difference]: Start difference. First operand 249 states and 331 transitions. cyclomatic complexity: 85 Second operand 5 states. [2018-12-08 16:26:36,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:26:36,905 INFO L93 Difference]: Finished difference Result 839 states and 1112 transitions. [2018-12-08 16:26:36,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 16:26:36,906 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 839 states and 1112 transitions. [2018-12-08 16:26:36,909 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 614 [2018-12-08 16:26:36,911 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 839 states to 839 states and 1112 transitions. [2018-12-08 16:26:36,911 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 839 [2018-12-08 16:26:36,911 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 839 [2018-12-08 16:26:36,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 839 states and 1112 transitions. [2018-12-08 16:26:36,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 16:26:36,913 INFO L705 BuchiCegarLoop]: Abstraction has 839 states and 1112 transitions. [2018-12-08 16:26:36,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states and 1112 transitions. [2018-12-08 16:26:36,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 492. [2018-12-08 16:26:36,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2018-12-08 16:26:36,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 644 transitions. [2018-12-08 16:26:36,921 INFO L728 BuchiCegarLoop]: Abstraction has 492 states and 644 transitions. [2018-12-08 16:26:36,921 INFO L608 BuchiCegarLoop]: Abstraction has 492 states and 644 transitions. [2018-12-08 16:26:36,921 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-08 16:26:36,921 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 492 states and 644 transitions. [2018-12-08 16:26:36,923 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 348 [2018-12-08 16:26:36,923 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 16:26:36,923 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 16:26:36,923 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-08 16:26:36,923 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:26:36,924 INFO L794 eck$LassoCheckResult]: Stem: 3929#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;call #t~string20.base, #t~string20.offset := #Ultimate.alloc(30);call #t~string21.base, #t~string21.offset := #Ultimate.alloc(9);call #t~string22.base, #t~string22.offset := #Ultimate.alloc(21);call #t~string23.base, #t~string23.offset := #Ultimate.alloc(30);call #t~string24.base, #t~string24.offset := #Ultimate.alloc(9);call #t~string25.base, #t~string25.offset := #Ultimate.alloc(21);call #t~string29.base, #t~string29.offset := #Ultimate.alloc(30);call #t~string30.base, #t~string30.offset := #Ultimate.alloc(9);call #t~string31.base, #t~string31.offset := #Ultimate.alloc(25);call #t~string32.base, #t~string32.offset := #Ultimate.alloc(30);call #t~string33.base, #t~string33.offset := #Ultimate.alloc(9);call #t~string34.base, #t~string34.offset := #Ultimate.alloc(25);~pumpRunning~0 := 0;~systemActive~0 := 1;call #t~string46.base, #t~string46.offset := #Ultimate.alloc(13);call #t~string48.base, #t~string48.offset := #Ultimate.alloc(3);call write~init~int(79, #t~string48.base, #t~string48.offset, 1);call write~init~int(110, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 2 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.alloc(4);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(102, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(102, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 3 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.alloc(7);call write~init~int(44, #t~string52.base, #t~string52.offset, 1);call write~init~int(80, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(117, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(109, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(112, #t~string52.base, 4 + #t~string52.offset, 1);call write~init~int(58, #t~string52.base, 5 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 6 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.alloc(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(110, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.alloc(4);call write~init~int(79, #t~string56.base, #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 3 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.alloc(3);call write~init~int(41, #t~string58.base, #t~string58.offset, 1);call write~init~int(32, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.alloc(2);call write~init~int(10, #t~string60.base, #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 1 + #t~string60.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;call #t~string63.base, #t~string63.offset := #Ultimate.alloc(13);call #t~string65.base, #t~string65.offset := #Ultimate.alloc(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(77, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(101, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(116, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(104, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.alloc(5);call write~init~int(67, #t~string67.base, #t~string67.offset, 1);call write~init~int(82, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(73, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(84, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 4 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.alloc(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(75, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.alloc(2);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 1 + #t~string71.offset, 1); 3820#L-1 havoc main_#res;havoc main_#t~ret0, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 3802#L175 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 3803#L183 main_#t~ret0 := valid_product_#res;main_~tmp~0 := main_#t~ret0;havoc main_#t~ret0; 3861#L139 assume 0 != main_~tmp~0; 3862#L112 havoc test_#t~nondet37, test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3964#L950-1 [2018-12-08 16:26:36,924 INFO L796 eck$LassoCheckResult]: Loop: 3964#L950-1 assume !false; 4207#L566 assume test_~splverifierCounter~0 < 4; 3922#L567 test_~tmp~4 := test_#t~nondet37;havoc test_#t~nondet37; 3923#L575 assume !(0 != test_~tmp~4); 3908#L575-1 test_~tmp___0~0 := test_#t~nondet38;havoc test_#t~nondet38; 4245#L585 assume !(0 != test_~tmp___0~0); 4243#L585-1 test_~tmp___2~0 := test_#t~nondet39;havoc test_#t~nondet39; 4241#L595 assume 0 != test_~tmp___2~0; 4232#L601-1 assume !(0 != ~pumpRunning~0); 3863#L637 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret42, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 3843#L695 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret41, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 3844#L669-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret61, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 3906#L924-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 3976#L929-1 isHighWaterLevel_#t~ret61 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret61;havoc isHighWaterLevel_#t~ret61; 4293#L814-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 4292#L814-5 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 3930#L820-1 processEnvironment__wrappee__methaneQuery_#t~ret41 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~5 := processEnvironment__wrappee__methaneQuery_#t~ret41;havoc processEnvironment__wrappee__methaneQuery_#t~ret41; 3931#L673-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5); 3805#L644 havoc __utac_acc__Specification3_spec__1_#t~ret72, __utac_acc__Specification3_spec__1_#t~ret73, __utac_acc__Specification3_spec__1_#t~ret74, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 4213#L884-3 __utac_acc__Specification3_spec__1_#t~ret72 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret72;havoc __utac_acc__Specification3_spec__1_#t~ret72; 4212#L944 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~9);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 4211#L916 __utac_acc__Specification3_spec__1_#t~ret73 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret73;havoc __utac_acc__Specification3_spec__1_#t~ret73; 4208#L950 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 3964#L950-1 [2018-12-08 16:26:36,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:26:36,924 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 6 times [2018-12-08 16:26:36,924 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 16:26:36,925 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 16:26:36,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:26:36,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:36,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:26:36,953 INFO L82 PathProgramCache]: Analyzing trace with hash 687454750, now seen corresponding path program 1 times [2018-12-08 16:26:36,953 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 16:26:36,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 16:26:36,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,953 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 16:26:36,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:36,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:26:36,959 INFO L82 PathProgramCache]: Analyzing trace with hash 885207992, now seen corresponding path program 1 times [2018-12-08 16:26:36,959 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 16:26:36,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 16:26:36,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:26:36,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:26:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 16:26:40,139 WARN L180 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 425 DAG size of output: 423 [2018-12-08 16:26:41,761 WARN L180 SmtUtils]: Spent 1.62 s on a formula simplification that was a NOOP. DAG size: 423 [2018-12-08 16:26:41,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.12 04:26:41 BoogieIcfgContainer [2018-12-08 16:26:41,789 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-08 16:26:41,790 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 16:26:41,790 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 16:26:41,790 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 16:26:41,790 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:26:35" (3/4) ... [2018-12-08 16:26:41,792 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-12-08 16:26:41,821 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1a0b5aea-3142-4968-8f9c-fa49a76af279/bin-2019/uautomizer/witness.graphml [2018-12-08 16:26:41,821 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 16:26:41,821 INFO L168 Benchmark]: Toolchain (without parser) took 6781.27 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 340.8 MB). Free memory was 951.7 MB in the beginning and 1.3 GB in the end (delta: -359.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 16:26:41,822 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 16:26:41,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -187.3 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2018-12-08 16:26:41,822 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.29 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. [2018-12-08 16:26:41,822 INFO L168 Benchmark]: Boogie Preprocessor took 23.97 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-12-08 16:26:41,822 INFO L168 Benchmark]: RCFGBuilder took 382.30 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: 67.6 MB). Peak memory consumption was 67.6 MB. Max. memory is 11.5 GB. [2018-12-08 16:26:41,823 INFO L168 Benchmark]: BuchiAutomizer took 6032.44 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 186.6 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -245.9 MB). Peak memory consumption was 402.7 MB. Max. memory is 11.5 GB. [2018-12-08 16:26:41,823 INFO L168 Benchmark]: Witness Printer took 31.23 ms. Allocated memory is still 1.4 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 16:26:41,824 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 270.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -187.3 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.29 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 23.97 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 382.30 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: 67.6 MB). Peak memory consumption was 67.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 6032.44 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 186.6 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -245.9 MB). Peak memory consumption was 402.7 MB. Max. memory is 11.5 GB. * Witness Printer took 31.23 ms. Allocated memory is still 1.4 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (5 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.5 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 492 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.9s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 5.3s. Construction of modules took 0.2s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 1343 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 492 states and ocurred in iteration 5. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1304 SDtfs, 2553 SDslu, 2808 SDs, 0 SdLazy, 356 SolverSat, 121 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 565]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d65819a=0, NULL=0, NULL=0, retValue_acc=0, NULL=0, retValue_acc=1, NULL=31, NULL=26, NULL=0, NULL=33, NULL=17, methaneLevelCritical=0, tmp___0=0, NULL=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48f3c8c1=0, NULL=0, NULL=37, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@683a0a7e=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6340d84=0, NULL=0, tmp___1=0, NULL=28, NULL=8, NULL=20, cleanupTimeShifts=4, NULL=16, NULL=19, NULL=29, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22312de5=56, NULL=11, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a2d18ab=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1157e790=0, tmp=0, tmp___0=1, NULL=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@75517878=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12c13898=0, NULL=0, systemActive=1, waterLevel=1, NULL=12, \result=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@29ae4380=0, NULL=34, retValue_acc=0, \result=0, NULL=0, tmp___0=0, NULL=0, NULL=0, NULL=23, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, tmp=1, \result=0, NULL=39, NULL=27, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a05b3e=0, NULL=0, NULL=0, \result=1, NULL=24, NULL=36, NULL=18, NULL=0, retValue_acc=1, tmp=1, tmp___2=56, retValue_acc=1, NULL=14, splverifierCounter=0, \result=0, tmp___1=0, head=0, NULL=22, NULL=0, tmp=0, NULL=0, NULL=35, NULL=0, NULL=0, NULL=15, NULL=0, NULL=38, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L49] int cleanupTimeShifts = 4; [L357] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L629] int pumpRunning = 0; [L630] int systemActive = 1; [L841] int waterLevel = 1; [L842] int methaneLevelCritical = 0; [L130] int retValue_acc ; [L131] int tmp ; [L179] int retValue_acc ; [L182] retValue_acc = 1 [L183] return (retValue_acc); [L137] tmp = valid_product() [L139] COND TRUE \read(tmp) [L556] int splverifierCounter ; [L557] int tmp ; [L558] int tmp___0 ; [L559] int tmp___1 ; [L560] int tmp___2 ; [L563] splverifierCounter = 0 Loop: [L565] COND TRUE 1 [L567] COND TRUE splverifierCounter < 4 [L573] tmp = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp)) [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND TRUE \read(tmp___2) [L637] COND FALSE !(\read(pumpRunning)) [L644] COND TRUE \read(systemActive) [L692] int tmp ; [L695] COND FALSE !(\read(pumpRunning)) [L666] int tmp ; [L669] COND TRUE ! pumpRunning [L806] int retValue_acc ; [L807] int tmp ; [L808] int tmp___0 ; [L921] int retValue_acc ; [L924] COND TRUE waterLevel < 2 [L925] retValue_acc = 1 [L926] return (retValue_acc); [L812] tmp = isHighWaterSensorDry() [L814] COND TRUE \read(tmp) [L815] tmp___0 = 0 [L819] retValue_acc = tmp___0 [L820] return (retValue_acc); [L671] tmp = isHighWaterLevel() [L673] COND FALSE !(\read(tmp)) [L936] int tmp ; [L937] int tmp___0 ; [L938] int tmp___1 ; [L880] int retValue_acc ; [L883] retValue_acc = methaneLevelCritical [L884] return (retValue_acc); [L942] tmp = isMethaneLevelCritical() [L944] COND FALSE !(\read(tmp)) [L912] int retValue_acc ; [L915] retValue_acc = waterLevel [L916] return (retValue_acc); [L948] tmp___0 = getWaterLevel() [L950] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...