./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product64.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1f40dc85-fe49-4edd-b08a-5fb6a211ec28/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1f40dc85-fe49-4edd-b08a-5fb6a211ec28/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1f40dc85-fe49-4edd-b08a-5fb6a211ec28/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1f40dc85-fe49-4edd-b08a-5fb6a211ec28/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product64.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1f40dc85-fe49-4edd-b08a-5fb6a211ec28/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1f40dc85-fe49-4edd-b08a-5fb6a211ec28/bin/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 0c75cc0efa833cee2ae88b3635c1f8807d970760 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-29 23:58:27,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:58:27,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:58:27,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:58:27,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:58:27,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:58:27,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:58:27,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:58:27,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:58:27,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:58:27,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:58:27,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:58:27,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:58:27,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:58:27,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:58:27,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:58:27,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:58:27,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:58:27,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:58:27,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:58:27,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:58:27,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:58:27,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:58:27,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:58:27,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:58:27,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:58:27,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:58:27,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:58:27,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:58:27,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:58:27,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:58:27,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:58:27,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:58:27,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:58:27,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:58:27,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:58:27,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:58:27,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:58:27,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:58:27,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:58:27,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:58:27,539 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1f40dc85-fe49-4edd-b08a-5fb6a211ec28/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 23:58:27,561 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:58:27,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:58:27,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:58:27,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:58:27,563 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:58:27,563 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:58:27,563 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:58:27,564 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:58:27,564 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:58:27,564 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:58:27,564 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:58:27,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:58:27,565 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:58:27,565 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:58:27,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:58:27,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:58:27,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:58:27,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:58:27,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:58:27,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:58:27,567 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:58:27,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:58:27,567 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:58:27,567 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:58:27,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:58:27,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:58:27,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:58:27,568 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:58:27,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:58:27,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:58:27,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:58:27,569 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:58:27,570 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:58:27,571 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1f40dc85-fe49-4edd-b08a-5fb6a211ec28/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1f40dc85-fe49-4edd-b08a-5fb6a211ec28/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c75cc0efa833cee2ae88b3635c1f8807d970760 [2020-11-29 23:58:27,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:58:27,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:58:27,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:58:27,824 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:58:27,825 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:58:27,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1f40dc85-fe49-4edd-b08a-5fb6a211ec28/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product64.cil.c [2020-11-29 23:58:27,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1f40dc85-fe49-4edd-b08a-5fb6a211ec28/bin/uautomizer/data/38af60983/f7d8c9db67f6456489a5bc3a8ada0074/FLAG09b4de5d5 [2020-11-29 23:58:28,386 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:58:28,387 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1f40dc85-fe49-4edd-b08a-5fb6a211ec28/sv-benchmarks/c/product-lines/minepump_spec3_product64.cil.c [2020-11-29 23:58:28,397 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1f40dc85-fe49-4edd-b08a-5fb6a211ec28/bin/uautomizer/data/38af60983/f7d8c9db67f6456489a5bc3a8ada0074/FLAG09b4de5d5 [2020-11-29 23:58:28,734 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1f40dc85-fe49-4edd-b08a-5fb6a211ec28/bin/uautomizer/data/38af60983/f7d8c9db67f6456489a5bc3a8ada0074 [2020-11-29 23:58:28,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:58:28,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:58:28,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:28,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:58:28,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:58:28,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:28" (1/1) ... [2020-11-29 23:58:28,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d434a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:28, skipping insertion in model container [2020-11-29 23:58:28,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:28" (1/1) ... [2020-11-29 23:58:28,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:58:28,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:58:29,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:29,135 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:58:29,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:29,287 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:58:29,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:29 WrapperNode [2020-11-29 23:58:29,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:29,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:29,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:58:29,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:58:29,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:29" (1/1) ... [2020-11-29 23:58:29,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:29" (1/1) ... [2020-11-29 23:58:29,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:29,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:58:29,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:58:29,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:58:29,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:29" (1/1) ... [2020-11-29 23:58:29,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:29" (1/1) ... [2020-11-29 23:58:29,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:29" (1/1) ... [2020-11-29 23:58:29,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:29" (1/1) ... [2020-11-29 23:58:29,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:29" (1/1) ... [2020-11-29 23:58:29,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:29" (1/1) ... [2020-11-29 23:58:29,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:29" (1/1) ... [2020-11-29 23:58:29,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:58:29,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:58:29,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:58:29,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:58:29,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f40dc85-fe49-4edd-b08a-5fb6a211ec28/bin/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 [2020-11-29 23:58:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:58:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:58:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:58:29,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:58:30,931 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:58:30,931 INFO L298 CfgBuilder]: Removed 366 assume(true) statements. [2020-11-29 23:58:30,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:30 BoogieIcfgContainer [2020-11-29 23:58:30,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:58:30,934 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:58:30,934 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:58:30,940 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:58:30,941 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:58:30,941 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:58:28" (1/3) ... [2020-11-29 23:58:30,942 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d821d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:58:30, skipping insertion in model container [2020-11-29 23:58:30,951 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:58:30,951 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:29" (2/3) ... [2020-11-29 23:58:30,951 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d821d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:58:30, skipping insertion in model container [2020-11-29 23:58:30,952 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:58:30,953 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:30" (3/3) ... [2020-11-29 23:58:30,956 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product64.cil.c [2020-11-29 23:58:30,999 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:58:30,999 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:58:31,000 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:58:31,000 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:58:31,000 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:58:31,000 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:58:31,000 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:58:31,000 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:58:31,019 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 233 states. [2020-11-29 23:58:31,052 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 153 [2020-11-29 23:58:31,052 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:58:31,052 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:58:31,060 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:58:31,060 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:31,060 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:58:31,061 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 233 states. [2020-11-29 23:58:31,073 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 153 [2020-11-29 23:58:31,079 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:58:31,079 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:58:31,080 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:58:31,082 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:31,091 INFO L794 eck$LassoCheckResult]: Stem: 101#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(13);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(110, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 3 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string20.base, #t~string20.offset, 1);call write~init~int(80, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(117, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(109, #t~string20.base, 3 + #t~string20.offset, 1);call write~init~int(112, #t~string20.base, 4 + #t~string20.offset, 1);call write~init~int(58, #t~string20.base, 5 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 6 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string26.base, #t~string26.offset, 1);call write~init~int(32, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 2 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string28.base, #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 1 + #t~string28.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(13);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string38.base, #t~string38.offset, 1);call write~init~int(77, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(101, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(116, #t~string38.base, 3 + #t~string38.offset, 1);call write~init~int(104, #t~string38.base, 4 + #t~string38.offset, 1);call write~init~int(58, #t~string38.base, 5 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 6 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string40.base, #t~string40.offset, 1);call write~init~int(82, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(73, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(84, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 4 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string42.base, #t~string42.offset, 1);call write~init~int(75, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 2 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string44.base, #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 1 + #t~string44.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 10#L-1true havoc main_#res;havoc main_#t~ret80, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 174#L67true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 56#L75true main_#t~ret80 := valid_product_#res;main_~tmp~10 := main_#t~ret80;havoc main_#t~ret80; 77#L980true assume 0 != main_~tmp~10; 131#L957true havoc test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 113#L1018-1true [2020-11-29 23:58:31,091 INFO L796 eck$LassoCheckResult]: Loop: 113#L1018-1true assume !false; 146#L370true assume test_~splverifierCounter~0 < 4; 227#L371true test_~tmp~6 := test_#t~nondet31;havoc test_#t~nondet31; 135#L379true assume !(0 != test_~tmp~6); 138#L379-1true test_~tmp___0~2 := test_#t~nondet32;havoc test_#t~nondet32; 47#L389true assume !(0 != test_~tmp___0~2); 43#L389-1true test_~tmp___2~0 := test_#t~nondet33;havoc test_#t~nondet33; 224#L399true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 121#L407-1true assume !(0 != ~pumpRunning~0); 178#L100true assume !(0 != ~systemActive~0); 229#L107true havoc __utac_acc__Specification3_spec__1_#t~ret81, __utac_acc__Specification3_spec__1_#t~ret82, __utac_acc__Specification3_spec__1_#t~ret83, __utac_acc__Specification3_spec__1_~tmp~11, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~11;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 12#L472-5true __utac_acc__Specification3_spec__1_#t~ret81 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~11 := __utac_acc__Specification3_spec__1_#t~ret81;havoc __utac_acc__Specification3_spec__1_#t~ret81; 128#L1012true assume 0 != __utac_acc__Specification3_spec__1_~tmp~11; 113#L1018-1true [2020-11-29 23:58:31,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:31,097 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-29 23:58:31,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:31,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695153191] [2020-11-29 23:58:31,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:31,399 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:31,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:31,571 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:31,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:31,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1665583745, now seen corresponding path program 1 times [2020-11-29 23:58:31,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:31,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044111640] [2020-11-29 23:58:31,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:31,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:31,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044111640] [2020-11-29 23:58:31,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:31,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:58:31,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114187374] [2020-11-29 23:58:31,649 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:58:31,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:31,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:58:31,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:58:31,666 INFO L87 Difference]: Start difference. First operand 233 states. Second operand 3 states. [2020-11-29 23:58:31,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:31,770 INFO L93 Difference]: Finished difference Result 454 states and 666 transitions. [2020-11-29 23:58:31,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:58:31,772 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 454 states and 666 transitions. [2020-11-29 23:58:31,789 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 298 [2020-11-29 23:58:31,801 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 454 states to 440 states and 651 transitions. [2020-11-29 23:58:31,825 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 440 [2020-11-29 23:58:31,828 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 440 [2020-11-29 23:58:31,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 440 states and 651 transitions. [2020-11-29 23:58:31,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:58:31,841 INFO L691 BuchiCegarLoop]: Abstraction has 440 states and 651 transitions. [2020-11-29 23:58:31,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states and 651 transitions. [2020-11-29 23:58:31,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 438. [2020-11-29 23:58:31,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2020-11-29 23:58:31,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 648 transitions. [2020-11-29 23:58:31,903 INFO L714 BuchiCegarLoop]: Abstraction has 438 states and 648 transitions. [2020-11-29 23:58:31,903 INFO L594 BuchiCegarLoop]: Abstraction has 438 states and 648 transitions. [2020-11-29 23:58:31,904 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:58:31,904 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 438 states and 648 transitions. [2020-11-29 23:58:31,909 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 296 [2020-11-29 23:58:31,909 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:58:31,910 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:58:31,910 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:58:31,911 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:31,911 INFO L794 eck$LassoCheckResult]: Stem: 859#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(13);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(110, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 3 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string20.base, #t~string20.offset, 1);call write~init~int(80, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(117, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(109, #t~string20.base, 3 + #t~string20.offset, 1);call write~init~int(112, #t~string20.base, 4 + #t~string20.offset, 1);call write~init~int(58, #t~string20.base, 5 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 6 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string26.base, #t~string26.offset, 1);call write~init~int(32, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 2 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string28.base, #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 1 + #t~string28.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(13);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string38.base, #t~string38.offset, 1);call write~init~int(77, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(101, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(116, #t~string38.base, 3 + #t~string38.offset, 1);call write~init~int(104, #t~string38.base, 4 + #t~string38.offset, 1);call write~init~int(58, #t~string38.base, 5 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 6 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string40.base, #t~string40.offset, 1);call write~init~int(82, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(73, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(84, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 4 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string42.base, #t~string42.offset, 1);call write~init~int(75, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 2 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string44.base, #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 1 + #t~string44.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 711#L-1 havoc main_#res;havoc main_#t~ret80, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 712#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 793#L75 main_#t~ret80 := valid_product_#res;main_~tmp~10 := main_#t~ret80;havoc main_#t~ret80; 794#L980 assume 0 != main_~tmp~10; 826#L957 havoc test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 775#L1018-1 [2020-11-29 23:58:31,911 INFO L796 eck$LassoCheckResult]: Loop: 775#L1018-1 assume !false; 871#L370 assume test_~splverifierCounter~0 < 4; 904#L371 test_~tmp~6 := test_#t~nondet31;havoc test_#t~nondet31; 894#L379 assume !(0 != test_~tmp~6); 896#L379-1 test_~tmp___0~2 := test_#t~nondet32;havoc test_#t~nondet32; 778#L389 assume !(0 != test_~tmp___0~2); 772#L389-1 test_~tmp___2~0 := test_#t~nondet33;havoc test_#t~nondet33; 773#L399 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 878#L407-1 assume !(0 != ~pumpRunning~0); 833#L100 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret10, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 933#L184 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret9, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 1007#L158-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 983#L132-3 assume !(0 == ~pumpRunning~0); 954#L107 havoc __utac_acc__Specification3_spec__1_#t~ret81, __utac_acc__Specification3_spec__1_#t~ret82, __utac_acc__Specification3_spec__1_#t~ret83, __utac_acc__Specification3_spec__1_~tmp~11, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~11;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 715#L472-5 __utac_acc__Specification3_spec__1_#t~ret81 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~11 := __utac_acc__Specification3_spec__1_#t~ret81;havoc __utac_acc__Specification3_spec__1_#t~ret81; 716#L1012 assume 0 != __utac_acc__Specification3_spec__1_~tmp~11; 775#L1018-1 [2020-11-29 23:58:31,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:31,913 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-29 23:58:31,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:31,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010972753] [2020-11-29 23:58:31,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:31,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:32,073 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:32,094 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:32,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:32,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1220566452, now seen corresponding path program 1 times [2020-11-29 23:58:32,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:32,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874678567] [2020-11-29 23:58:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:32,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:32,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874678567] [2020-11-29 23:58:32,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:32,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:58:32,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435645433] [2020-11-29 23:58:32,118 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:58:32,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:32,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:58:32,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:58:32,119 INFO L87 Difference]: Start difference. First operand 438 states and 648 transitions. cyclomatic complexity: 213 Second operand 3 states. [2020-11-29 23:58:32,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:32,274 INFO L93 Difference]: Finished difference Result 443 states and 622 transitions. [2020-11-29 23:58:32,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:58:32,275 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 443 states and 622 transitions. [2020-11-29 23:58:32,280 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 307 [2020-11-29 23:58:32,285 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 443 states to 443 states and 622 transitions. [2020-11-29 23:58:32,285 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 443 [2020-11-29 23:58:32,287 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 443 [2020-11-29 23:58:32,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 443 states and 622 transitions. [2020-11-29 23:58:32,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:58:32,290 INFO L691 BuchiCegarLoop]: Abstraction has 443 states and 622 transitions. [2020-11-29 23:58:32,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states and 622 transitions. [2020-11-29 23:58:32,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2020-11-29 23:58:32,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-11-29 23:58:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 622 transitions. [2020-11-29 23:58:32,324 INFO L714 BuchiCegarLoop]: Abstraction has 443 states and 622 transitions. [2020-11-29 23:58:32,325 INFO L594 BuchiCegarLoop]: Abstraction has 443 states and 622 transitions. [2020-11-29 23:58:32,325 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 23:58:32,325 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 443 states and 622 transitions. [2020-11-29 23:58:32,329 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 307 [2020-11-29 23:58:32,329 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:58:32,329 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:58:32,330 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:58:32,332 INFO L853 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] [2020-11-29 23:58:32,332 INFO L794 eck$LassoCheckResult]: Stem: 1772#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(13);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(110, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 3 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string20.base, #t~string20.offset, 1);call write~init~int(80, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(117, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(109, #t~string20.base, 3 + #t~string20.offset, 1);call write~init~int(112, #t~string20.base, 4 + #t~string20.offset, 1);call write~init~int(58, #t~string20.base, 5 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 6 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string26.base, #t~string26.offset, 1);call write~init~int(32, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 2 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string28.base, #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 1 + #t~string28.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(13);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string38.base, #t~string38.offset, 1);call write~init~int(77, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(101, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(116, #t~string38.base, 3 + #t~string38.offset, 1);call write~init~int(104, #t~string38.base, 4 + #t~string38.offset, 1);call write~init~int(58, #t~string38.base, 5 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 6 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string40.base, #t~string40.offset, 1);call write~init~int(82, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(73, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(84, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 4 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string42.base, #t~string42.offset, 1);call write~init~int(75, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 2 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string44.base, #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 1 + #t~string44.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 1598#L-1 havoc main_#res;havoc main_#t~ret80, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 1599#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1684#L75 main_#t~ret80 := valid_product_#res;main_~tmp~10 := main_#t~ret80;havoc main_#t~ret80; 1708#L980 assume 0 != main_~tmp~10; 1742#L957 havoc test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1787#L1018-1 [2020-11-29 23:58:32,333 INFO L796 eck$LassoCheckResult]: Loop: 1787#L1018-1 assume !false; 1879#L370 assume test_~splverifierCounter~0 < 4; 1878#L371 test_~tmp~6 := test_#t~nondet31;havoc test_#t~nondet31; 1877#L379 assume !(0 != test_~tmp~6); 1790#L379-1 test_~tmp___0~2 := test_#t~nondet32;havoc test_#t~nondet32; 1791#L389 assume !(0 != test_~tmp___0~2); 1655#L389-1 test_~tmp___2~0 := test_#t~nondet33;havoc test_#t~nondet33; 1656#L399 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1776#L407-1 assume !(0 != ~pumpRunning~0); 1691#L100 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret10, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1692#L184 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret9, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 1630#L158-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1631#L132-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret29, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1748#L512-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1749#L517-3 isHighWaterLevel_#t~ret29 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret29;havoc isHighWaterLevel_#t~ret29; 1711#L303-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~0 := 0; 1694#L303-11 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 1677#L309-3 processEnvironment__wrappee__highWaterSensor_#t~ret8 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret8;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8; 1613#L136-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1614#L107 havoc __utac_acc__Specification3_spec__1_#t~ret81, __utac_acc__Specification3_spec__1_#t~ret82, __utac_acc__Specification3_spec__1_#t~ret83, __utac_acc__Specification3_spec__1_~tmp~11, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~11;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 1886#L472-5 __utac_acc__Specification3_spec__1_#t~ret81 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~11 := __utac_acc__Specification3_spec__1_#t~ret81;havoc __utac_acc__Specification3_spec__1_#t~ret81; 1882#L1012 assume 0 != __utac_acc__Specification3_spec__1_~tmp~11; 1787#L1018-1 [2020-11-29 23:58:32,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:32,335 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-29 23:58:32,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:32,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768607700] [2020-11-29 23:58:32,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:32,421 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:32,506 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:32,525 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:32,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:32,530 INFO L82 PathProgramCache]: Analyzing trace with hash -231328544, now seen corresponding path program 1 times [2020-11-29 23:58:32,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:32,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423464110] [2020-11-29 23:58:32,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:32,540 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:32,547 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:32,557 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:32,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:32,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1021976582, now seen corresponding path program 1 times [2020-11-29 23:58:32,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:32,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800912221] [2020-11-29 23:58:32,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:32,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800912221] [2020-11-29 23:58:32,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:32,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:58:32,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707868929] [2020-11-29 23:58:32,786 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-11-29 23:58:32,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:32,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:58:32,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:58:32,860 INFO L87 Difference]: Start difference. First operand 443 states and 622 transitions. cyclomatic complexity: 182 Second operand 5 states. [2020-11-29 23:58:33,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:33,185 INFO L93 Difference]: Finished difference Result 1483 states and 2085 transitions. [2020-11-29 23:58:33,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:58:33,186 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1483 states and 2085 transitions. [2020-11-29 23:58:33,201 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 1085 [2020-11-29 23:58:33,214 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1483 states to 1483 states and 2085 transitions. [2020-11-29 23:58:33,215 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1483 [2020-11-29 23:58:33,217 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1483 [2020-11-29 23:58:33,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1483 states and 2085 transitions. [2020-11-29 23:58:33,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:58:33,222 INFO L691 BuchiCegarLoop]: Abstraction has 1483 states and 2085 transitions. [2020-11-29 23:58:33,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states and 2085 transitions. [2020-11-29 23:58:33,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 880. [2020-11-29 23:58:33,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-11-29 23:58:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1222 transitions. [2020-11-29 23:58:33,260 INFO L714 BuchiCegarLoop]: Abstraction has 880 states and 1222 transitions. [2020-11-29 23:58:33,260 INFO L594 BuchiCegarLoop]: Abstraction has 880 states and 1222 transitions. [2020-11-29 23:58:33,260 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 23:58:33,260 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 880 states and 1222 transitions. [2020-11-29 23:58:33,266 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 614 [2020-11-29 23:58:33,267 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:58:33,267 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:58:33,269 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:58:33,269 INFO L853 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, 1] [2020-11-29 23:58:33,269 INFO L794 eck$LassoCheckResult]: Stem: 3729#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(13);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(110, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 3 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string20.base, #t~string20.offset, 1);call write~init~int(80, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(117, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(109, #t~string20.base, 3 + #t~string20.offset, 1);call write~init~int(112, #t~string20.base, 4 + #t~string20.offset, 1);call write~init~int(58, #t~string20.base, 5 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 6 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string26.base, #t~string26.offset, 1);call write~init~int(32, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 2 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string28.base, #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 1 + #t~string28.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(13);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string38.base, #t~string38.offset, 1);call write~init~int(77, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(101, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(116, #t~string38.base, 3 + #t~string38.offset, 1);call write~init~int(104, #t~string38.base, 4 + #t~string38.offset, 1);call write~init~int(58, #t~string38.base, 5 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 6 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string40.base, #t~string40.offset, 1);call write~init~int(82, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(73, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(84, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 4 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string42.base, #t~string42.offset, 1);call write~init~int(75, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 2 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string44.base, #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 1 + #t~string44.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 3544#L-1 havoc main_#res;havoc main_#t~ret80, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 3545#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 3635#L75 main_#t~ret80 := valid_product_#res;main_~tmp~10 := main_#t~ret80;havoc main_#t~ret80; 3663#L980 assume 0 != main_~tmp~10; 3696#L957 havoc test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3624#L1018-1 [2020-11-29 23:58:33,270 INFO L796 eck$LassoCheckResult]: Loop: 3624#L1018-1 assume !false; 3590#L370 assume test_~splverifierCounter~0 < 4; 3591#L371 test_~tmp~6 := test_#t~nondet31;havoc test_#t~nondet31; 4021#L379 assume !(0 != test_~tmp~6); 3969#L379-1 test_~tmp___0~2 := test_#t~nondet32;havoc test_#t~nondet32; 3947#L389 assume !(0 != test_~tmp___0~2); 3948#L389-1 test_~tmp___2~0 := test_#t~nondet33;havoc test_#t~nondet33; 4092#L399 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 3730#L407-1 assume !(0 != ~pumpRunning~0); 4083#L100 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret10, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 4084#L184 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret9, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 4059#L158-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 4079#L132-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret29, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 4076#L512-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 4074#L517-3 isHighWaterLevel_#t~ret29 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret29;havoc isHighWaterLevel_#t~ret29; 4071#L303-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~0 := 0; 4068#L303-11 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 4065#L309-3 processEnvironment__wrappee__highWaterSensor_#t~ret8 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret8;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8; 4018#L136-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 3741#L107 havoc __utac_acc__Specification3_spec__1_#t~ret81, __utac_acc__Specification3_spec__1_#t~ret82, __utac_acc__Specification3_spec__1_#t~ret83, __utac_acc__Specification3_spec__1_~tmp~11, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~11;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 3546#L472-5 __utac_acc__Specification3_spec__1_#t~ret81 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~11 := __utac_acc__Specification3_spec__1_#t~ret81;havoc __utac_acc__Specification3_spec__1_#t~ret81; 3547#L1012 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~11);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 3673#L504 __utac_acc__Specification3_spec__1_#t~ret82 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~3 := __utac_acc__Specification3_spec__1_#t~ret82;havoc __utac_acc__Specification3_spec__1_#t~ret82; 3674#L1018 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~3); 3624#L1018-1 [2020-11-29 23:58:33,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:33,270 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2020-11-29 23:58:33,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:33,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209207624] [2020-11-29 23:58:33,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:33,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:33,380 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:33,391 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:33,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:33,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1031581652, now seen corresponding path program 1 times [2020-11-29 23:58:33,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:33,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468100041] [2020-11-29 23:58:33,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:33,399 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:33,403 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:33,408 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:33,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:33,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1428002438, now seen corresponding path program 1 times [2020-11-29 23:58:33,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:33,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263248717] [2020-11-29 23:58:33,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:33,437 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:33,473 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:33,492 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:33,648 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-11-29 23:59:48,842 WARN L193 SmtUtils]: Spent 1.25 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-30 00:00:51,443 WARN L193 SmtUtils]: Spent 1.04 m on a formula simplification that was a NOOP. DAG size: 433 [2020-11-30 00:00:51,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:00:51 BoogieIcfgContainer [2020-11-30 00:00:51,745 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:00:51,746 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:00:51,746 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:00:51,747 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:00:51,747 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:30" (3/4) ... [2020-11-30 00:00:51,751 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 00:00:51,817 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1f40dc85-fe49-4edd-b08a-5fb6a211ec28/bin/uautomizer/witness.graphml [2020-11-30 00:00:51,818 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:00:51,819 INFO L168 Benchmark]: Toolchain (without parser) took 143081.94 ms. Allocated memory was 111.1 MB in the beginning and 188.7 MB in the end (delta: 77.6 MB). Free memory was 82.7 MB in the beginning and 51.7 MB in the end (delta: 30.9 MB). Peak memory consumption was 110.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:51,820 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 111.1 MB. Free memory was 70.7 MB in the beginning and 70.6 MB in the end (delta: 55.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:00:51,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 549.85 ms. Allocated memory is still 111.1 MB. Free memory was 82.5 MB in the beginning and 74.9 MB in the end (delta: 7.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:51,821 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.07 ms. Allocated memory is still 111.1 MB. Free memory was 74.9 MB in the beginning and 69.4 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:51,822 INFO L168 Benchmark]: Boogie Preprocessor took 81.50 ms. Allocated memory is still 111.1 MB. Free memory was 69.0 MB in the beginning and 65.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:51,823 INFO L168 Benchmark]: RCFGBuilder took 1459.77 ms. Allocated memory was 111.1 MB in the beginning and 144.7 MB in the end (delta: 33.6 MB). Free memory was 65.2 MB in the beginning and 85.0 MB in the end (delta: -19.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:51,824 INFO L168 Benchmark]: BuchiAutomizer took 140811.63 ms. Allocated memory was 144.7 MB in the beginning and 188.7 MB in the end (delta: 44.0 MB). Free memory was 85.0 MB in the beginning and 54.9 MB in the end (delta: 30.1 MB). Peak memory consumption was 83.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:51,824 INFO L168 Benchmark]: Witness Printer took 71.78 ms. Allocated memory is still 188.7 MB. Free memory was 54.9 MB in the beginning and 51.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:51,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 111.1 MB. Free memory was 70.7 MB in the beginning and 70.6 MB in the end (delta: 55.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 549.85 ms. Allocated memory is still 111.1 MB. Free memory was 82.5 MB in the beginning and 74.9 MB in the end (delta: 7.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 102.07 ms. Allocated memory is still 111.1 MB. Free memory was 74.9 MB in the beginning and 69.4 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.50 ms. Allocated memory is still 111.1 MB. Free memory was 69.0 MB in the beginning and 65.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1459.77 ms. Allocated memory was 111.1 MB in the beginning and 144.7 MB in the end (delta: 33.6 MB). Free memory was 65.2 MB in the beginning and 85.0 MB in the end (delta: -19.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 140811.63 ms. Allocated memory was 144.7 MB in the beginning and 188.7 MB in the end (delta: 44.0 MB). Free memory was 85.0 MB in the beginning and 54.9 MB in the end (delta: 30.1 MB). Peak memory consumption was 83.6 MB. Max. memory is 16.1 GB. * Witness Printer took 71.78 ms. Allocated memory is still 188.7 MB. Free memory was 54.9 MB in the beginning and 51.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 880 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 140.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 139.7s. Construction of modules took 0.3s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 605 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 880 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 952 SDtfs, 1549 SDslu, 1565 SDs, 0 SdLazy, 212 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 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: 369]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=11449} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=11449, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4bd84678=0, NULL=0, NULL=11458, NULL=11478, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@356c0c59=0, retValue_acc=0, NULL=0, tmp=0, NULL=11467, NULL=0, tmp___1=0, NULL=0, NULL=11464, NULL=11453, cleanupTimeShifts=4, NULL=11461, NULL=11473, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@62f3e980=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6b72b9ef=78, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@254d34bc=0, NULL=11472, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=11452, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@16417c33=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@77727d4a=0, NULL=0, tmp=1, NULL=0, NULL=11459, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6deeb09e=0, retValue_acc=1, NULL=0, tmp___0=0, NULL=11470, NULL=11460, NULL=11457, tmp=0, head=0, tmp=0, NULL=0, NULL=0, tmp=0, NULL=11475, NULL=0, NULL=0, NULL=11477, NULL=11471, NULL=11456, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@46287624=0, tmp___0=0, NULL=0, NULL=0, NULL=0, tmp=0, NULL=11450, tmp___0=1, NULL=0, systemActive=1, \result=1, NULL=0, retValue_acc=0, \result=0, NULL=11469, retValue_acc=0, NULL=11468, \result=0, NULL=11451, NULL=0, NULL=0, NULL=11462, NULL=11474, NULL=11463, retValue_acc=1, tmp___2=78, splverifierCounter=0, NULL=0, \result=0, NULL=11466, tmp___1=0, NULL=0, NULL=0, NULL=11455, NULL=0, NULL=11476, NULL=11454, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@46e5d0b3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@33ca60cf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70d1349a=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L92] int pumpRunning = 0; [L93] int systemActive = 1; [L429] int waterLevel = 1; [L430] int methaneLevelCritical = 0; [L701] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L898] int cleanupTimeShifts = 4; [L971] int retValue_acc ; [L972] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L978] tmp = valid_product() [L980] COND TRUE \read(tmp) [L360] int splverifierCounter ; [L361] int tmp ; [L362] int tmp___0 ; [L363] int tmp___1 ; [L364] int tmp___2 ; [L367] splverifierCounter = 0 Loop: [L369] COND TRUE 1 [L371] COND TRUE splverifierCounter < 4 [L377] tmp = __VERIFIER_nondet_int() [L379] COND FALSE !(\read(tmp)) [L387] tmp___0 = __VERIFIER_nondet_int() [L389] COND FALSE !(\read(tmp___0)) [L397] tmp___2 = __VERIFIER_nondet_int() [L399] COND TRUE \read(tmp___2) [L351] systemActive = 1 [L100] COND FALSE !(\read(pumpRunning)) [L107] COND TRUE \read(systemActive) [L181] int tmp ; [L184] COND FALSE !(\read(pumpRunning)) [L155] int tmp ; [L158] COND FALSE !(\read(pumpRunning)) [L129] int tmp ; [L132] COND TRUE ! pumpRunning [L295] int retValue_acc ; [L296] int tmp ; [L297] int tmp___0 ; [L509] int retValue_acc ; [L512] COND TRUE waterLevel < 2 [L513] retValue_acc = 1 [L514] return (retValue_acc); [L301] tmp = isHighWaterSensorDry() [L303] COND TRUE \read(tmp) [L304] tmp___0 = 0 [L308] retValue_acc = tmp___0 [L309] return (retValue_acc); [L134] tmp = isHighWaterLevel() [L136] COND FALSE !(\read(tmp)) [L1004] int tmp ; [L1005] int tmp___0 ; [L1006] int tmp___1 ; [L468] int retValue_acc ; [L471] retValue_acc = methaneLevelCritical [L472] return (retValue_acc); [L1010] tmp = isMethaneLevelCritical() [L1012] COND FALSE !(\read(tmp)) [L500] int retValue_acc ; [L503] retValue_acc = waterLevel [L504] return (retValue_acc); [L1016] tmp___0 = getWaterLevel() [L1018] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...