./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product54.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_b0915776-bcdd-44b8-98e7-8c125ba895fd/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b0915776-bcdd-44b8-98e7-8c125ba895fd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b0915776-bcdd-44b8-98e7-8c125ba895fd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b0915776-bcdd-44b8-98e7-8c125ba895fd/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product54.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b0915776-bcdd-44b8-98e7-8c125ba895fd/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b0915776-bcdd-44b8-98e7-8c125ba895fd/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 1ac6dea7591a331638bc3d010fd3610cfccee660 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 23:12:59,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:12:59,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:12:59,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:12:59,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:12:59,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:12:59,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:12:59,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:12:59,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:12:59,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:12:59,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:12:59,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:12:59,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:12:59,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:12:59,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:12:59,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:12:59,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:12:59,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:12:59,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:12:59,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:12:59,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:12:59,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:12:59,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:12:59,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:12:59,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:12:59,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:12:59,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:12:59,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:12:59,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:12:59,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:12:59,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:12:59,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:12:59,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:12:59,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:12:59,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:12:59,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:12:59,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:12:59,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:12:59,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:12:59,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:12:59,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:12:59,721 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b0915776-bcdd-44b8-98e7-8c125ba895fd/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 23:12:59,758 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:12:59,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:12:59,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:12:59,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:12:59,761 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:12:59,761 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:12:59,761 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:12:59,762 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:12:59,762 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:12:59,762 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:12:59,763 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:12:59,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:12:59,764 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:12:59,764 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:12:59,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:12:59,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:12:59,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:12:59,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:12:59,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:12:59,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:12:59,765 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:12:59,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:12:59,766 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:12:59,766 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:12:59,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:12:59,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:12:59,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:12:59,767 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:12:59,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:12:59,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:12:59,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:12:59,769 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:12:59,770 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:12:59,770 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_b0915776-bcdd-44b8-98e7-8c125ba895fd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b0915776-bcdd-44b8-98e7-8c125ba895fd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ac6dea7591a331638bc3d010fd3610cfccee660 [2020-11-29 23:13:00,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:13:00,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:13:00,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:13:00,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:13:00,070 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:13:00,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b0915776-bcdd-44b8-98e7-8c125ba895fd/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec5_product54.cil.c [2020-11-29 23:13:00,154 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b0915776-bcdd-44b8-98e7-8c125ba895fd/bin/uautomizer/data/fc44a7c93/15d0291375ed4e5daa1aa1bab74919a4/FLAG38d5646e5 [2020-11-29 23:13:00,691 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:13:00,692 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b0915776-bcdd-44b8-98e7-8c125ba895fd/sv-benchmarks/c/product-lines/minepump_spec5_product54.cil.c [2020-11-29 23:13:00,712 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b0915776-bcdd-44b8-98e7-8c125ba895fd/bin/uautomizer/data/fc44a7c93/15d0291375ed4e5daa1aa1bab74919a4/FLAG38d5646e5 [2020-11-29 23:13:01,008 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b0915776-bcdd-44b8-98e7-8c125ba895fd/bin/uautomizer/data/fc44a7c93/15d0291375ed4e5daa1aa1bab74919a4 [2020-11-29 23:13:01,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:13:01,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:13:01,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:13:01,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:13:01,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:13:01,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:13:01" (1/1) ... [2020-11-29 23:13:01,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be7bd46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:01, skipping insertion in model container [2020-11-29 23:13:01,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:13:01" (1/1) ... [2020-11-29 23:13:01,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:13:01,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:13:01,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:13:01,459 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:13:01,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:13:01,605 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:13:01,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:01 WrapperNode [2020-11-29 23:13:01,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:13:01,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:13:01,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:13:01,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:13:01,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:01" (1/1) ... [2020-11-29 23:13:01,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:01" (1/1) ... [2020-11-29 23:13:01,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:13:01,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:13:01,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:13:01,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:13:01,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:01" (1/1) ... [2020-11-29 23:13:01,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:01" (1/1) ... [2020-11-29 23:13:01,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:01" (1/1) ... [2020-11-29 23:13:01,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:01" (1/1) ... [2020-11-29 23:13:01,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:01" (1/1) ... [2020-11-29 23:13:01,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:01" (1/1) ... [2020-11-29 23:13:01,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:01" (1/1) ... [2020-11-29 23:13:01,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:13:01,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:13:01,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:13:01,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:13:01,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0915776-bcdd-44b8-98e7-8c125ba895fd/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 23:13:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:13:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:13:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:13:01,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:13:03,113 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:13:03,116 INFO L298 CfgBuilder]: Removed 298 assume(true) statements. [2020-11-29 23:13:03,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:13:03 BoogieIcfgContainer [2020-11-29 23:13:03,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:13:03,121 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:13:03,121 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:13:03,125 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:13:03,125 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:13:03,126 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:13:01" (1/3) ... [2020-11-29 23:13:03,127 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26c2778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:13:03, skipping insertion in model container [2020-11-29 23:13:03,127 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:13:03,128 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:01" (2/3) ... [2020-11-29 23:13:03,128 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26c2778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:13:03, skipping insertion in model container [2020-11-29 23:13:03,129 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:13:03,129 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:13:03" (3/3) ... [2020-11-29 23:13:03,135 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product54.cil.c [2020-11-29 23:13:03,173 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:13:03,173 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:13:03,173 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:13:03,174 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:13:03,174 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:13:03,174 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:13:03,174 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:13:03,174 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:13:03,191 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 198 states. [2020-11-29 23:13:03,219 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 129 [2020-11-29 23:13:03,219 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:13:03,219 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:13:03,231 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:03,233 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:03,233 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:13:03,233 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 198 states. [2020-11-29 23:13:03,246 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 129 [2020-11-29 23:13:03,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:13:03,247 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:13:03,248 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:03,248 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:03,252 INFO L794 eck$LassoCheckResult]: Stem: 104#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);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~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);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);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 6#L-1true havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~4, main_~tmp~1;havoc main_~retValue_acc~4;havoc main_~tmp~1; 55#L642true havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 81#L650true main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 113#L302true assume 0 != main_~tmp~1; 5#L274true ~switchedOnBeforeTS~0 := 0; 120#L51true havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 142#L72-1true [2020-11-29 23:13:03,253 INFO L796 eck$LassoCheckResult]: Loop: 142#L72-1true assume !false; 172#L564true assume test_~splverifierCounter~0 < 4; 60#L565true test_~tmp~7 := test_#t~nondet43;havoc test_#t~nondet43; 146#L573true assume !(0 != test_~tmp~7); 148#L573-1true test_~tmp___0~3 := test_#t~nondet44;havoc test_#t~nondet44; 108#L583true assume !(0 != test_~tmp___0~3); 109#L583-1true test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 23#L593true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 129#L601-2true havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~6;havoc isPumpRunning_~retValue_acc~6;isPumpRunning_~retValue_acc~6 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~6; 41#L466true __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 143#L61true assume !(0 != ~pumpRunning~0); 8#L329true assume !(0 != ~systemActive~0); 97#L336true havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 102#L176true __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 144#L72true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 142#L72-1true [2020-11-29 23:13:03,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:03,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2020-11-29 23:13:03,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:03,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567832193] [2020-11-29 23:13:03,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:03,531 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:03,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:03,773 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:03,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:03,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1016486543, now seen corresponding path program 1 times [2020-11-29 23:13:03,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:03,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942167759] [2020-11-29 23:13:03,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:03,861 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 23:13:03,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942167759] [2020-11-29 23:13:03,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:13:03,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:13:03,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685797347] [2020-11-29 23:13:03,867 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:13:03,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:13:03,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:13:03,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:13:03,888 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 3 states. [2020-11-29 23:13:03,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:13:03,956 INFO L93 Difference]: Finished difference Result 195 states and 287 transitions. [2020-11-29 23:13:03,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:13:03,963 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 195 states and 287 transitions. [2020-11-29 23:13:03,973 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 125 [2020-11-29 23:13:03,987 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 195 states to 188 states and 279 transitions. [2020-11-29 23:13:03,989 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 188 [2020-11-29 23:13:03,990 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2020-11-29 23:13:03,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 188 states and 279 transitions. [2020-11-29 23:13:03,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:13:03,992 INFO L691 BuchiCegarLoop]: Abstraction has 188 states and 279 transitions. [2020-11-29 23:13:04,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states and 279 transitions. [2020-11-29 23:13:04,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-11-29 23:13:04,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-11-29 23:13:04,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 279 transitions. [2020-11-29 23:13:04,044 INFO L714 BuchiCegarLoop]: Abstraction has 188 states and 279 transitions. [2020-11-29 23:13:04,044 INFO L594 BuchiCegarLoop]: Abstraction has 188 states and 279 transitions. [2020-11-29 23:13:04,044 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:13:04,044 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 188 states and 279 transitions. [2020-11-29 23:13:04,047 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 125 [2020-11-29 23:13:04,048 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:13:04,048 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:13:04,049 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:04,049 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:04,049 INFO L794 eck$LassoCheckResult]: Stem: 583#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);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~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);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);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 425#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~4, main_~tmp~1;havoc main_~retValue_acc~4;havoc main_~tmp~1; 426#L642 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 520#L650 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 569#L302 assume 0 != main_~tmp~1; 411#L274 ~switchedOnBeforeTS~0 := 0; 412#L51 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 417#L72-1 [2020-11-29 23:13:04,049 INFO L796 eck$LassoCheckResult]: Loop: 417#L72-1 assume !false; 527#L564 assume test_~splverifierCounter~0 < 4; 533#L565 test_~tmp~7 := test_#t~nondet43;havoc test_#t~nondet43; 534#L573 assume !(0 != test_~tmp~7); 545#L573-1 test_~tmp___0~3 := test_#t~nondet44;havoc test_#t~nondet44; 551#L583 assume !(0 != test_~tmp___0~3); 439#L583-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 455#L593 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 457#L601-2 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~6;havoc isPumpRunning_~retValue_acc~6;isPumpRunning_~retValue_acc~6 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~6; 478#L466 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 490#L61 assume !(0 != ~pumpRunning~0); 430#L329 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret23, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 431#L413 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret22, processEnvironment__wrappee__lowWaterSensor_~tmp~3;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~3; 407#L387-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 409#L361-3 assume !(0 == ~pumpRunning~0); 406#L336 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 574#L176 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 531#L72 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 417#L72-1 [2020-11-29 23:13:04,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:04,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2020-11-29 23:13:04,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:04,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488308893] [2020-11-29 23:13:04,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:04,132 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:04,183 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:04,208 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:04,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:04,212 INFO L82 PathProgramCache]: Analyzing trace with hash 239725568, now seen corresponding path program 1 times [2020-11-29 23:13:04,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:04,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131173450] [2020-11-29 23:13:04,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:04,240 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 23:13:04,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131173450] [2020-11-29 23:13:04,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:13:04,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:13:04,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508157347] [2020-11-29 23:13:04,241 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:13:04,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:13:04,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:13:04,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:13:04,242 INFO L87 Difference]: Start difference. First operand 188 states and 279 transitions. cyclomatic complexity: 93 Second operand 3 states. [2020-11-29 23:13:04,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:13:04,467 INFO L93 Difference]: Finished difference Result 201 states and 278 transitions. [2020-11-29 23:13:04,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:13:04,468 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 201 states and 278 transitions. [2020-11-29 23:13:04,469 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 138 [2020-11-29 23:13:04,471 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 201 states to 201 states and 278 transitions. [2020-11-29 23:13:04,471 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 201 [2020-11-29 23:13:04,472 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 201 [2020-11-29 23:13:04,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 201 states and 278 transitions. [2020-11-29 23:13:04,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:13:04,474 INFO L691 BuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2020-11-29 23:13:04,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states and 278 transitions. [2020-11-29 23:13:04,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2020-11-29 23:13:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-11-29 23:13:04,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 278 transitions. [2020-11-29 23:13:04,486 INFO L714 BuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2020-11-29 23:13:04,486 INFO L594 BuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2020-11-29 23:13:04,486 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 23:13:04,486 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 201 states and 278 transitions. [2020-11-29 23:13:04,488 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 138 [2020-11-29 23:13:04,488 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:13:04,488 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:13:04,489 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:04,489 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 23:13:04,490 INFO L794 eck$LassoCheckResult]: Stem: 952#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);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~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);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);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 818#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~4, main_~tmp~1;havoc main_~retValue_acc~4;havoc main_~tmp~1; 819#L642 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 897#L650 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 933#L302 assume 0 != main_~tmp~1; 806#L274 ~switchedOnBeforeTS~0 := 0; 807#L51 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 811#L72-1 [2020-11-29 23:13:04,490 INFO L796 eck$LassoCheckResult]: Loop: 811#L72-1 assume !false; 950#L564 assume test_~splverifierCounter~0 < 4; 951#L565 test_~tmp~7 := test_#t~nondet43;havoc test_#t~nondet43; 996#L573 assume !(0 != test_~tmp~7); 977#L573-1 test_~tmp___0~3 := test_#t~nondet44;havoc test_#t~nondet44; 957#L583 assume !(0 != test_~tmp___0~3); 833#L583-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 965#L593 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 866#L601-2 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~6;havoc isPumpRunning_~retValue_acc~6;isPumpRunning_~retValue_acc~6 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~6; 867#L466 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 878#L61 assume !(0 != ~pumpRunning~0); 820#L329 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret23, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 821#L413 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret22, processEnvironment__wrappee__lowWaterSensor_~tmp~3;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~3; 803#L387-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 804#L361-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 919#L184-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 954#L189-3 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 924#L515-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 893#L515-11 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 880#L521-3 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 814#L365-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 802#L336 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 975#L176 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 973#L72 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 811#L72-1 [2020-11-29 23:13:04,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:04,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2020-11-29 23:13:04,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:04,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377568657] [2020-11-29 23:13:04,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:04,547 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:04,630 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:04,647 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:04,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:04,648 INFO L82 PathProgramCache]: Analyzing trace with hash 444481644, now seen corresponding path program 1 times [2020-11-29 23:13:04,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:04,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460889320] [2020-11-29 23:13:04,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:04,722 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 23:13:04,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460889320] [2020-11-29 23:13:04,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:13:04,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:13:04,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396078710] [2020-11-29 23:13:04,724 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:13:04,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:13:04,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:13:04,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:13:04,725 INFO L87 Difference]: Start difference. First operand 201 states and 278 transitions. cyclomatic complexity: 79 Second operand 5 states. [2020-11-29 23:13:05,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:13:05,182 INFO L93 Difference]: Finished difference Result 916 states and 1281 transitions. [2020-11-29 23:13:05,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:13:05,183 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 916 states and 1281 transitions. [2020-11-29 23:13:05,196 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 625 [2020-11-29 23:13:05,207 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 916 states to 916 states and 1281 transitions. [2020-11-29 23:13:05,207 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 916 [2020-11-29 23:13:05,210 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 916 [2020-11-29 23:13:05,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 916 states and 1281 transitions. [2020-11-29 23:13:05,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:13:05,218 INFO L691 BuchiCegarLoop]: Abstraction has 916 states and 1281 transitions. [2020-11-29 23:13:05,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states and 1281 transitions. [2020-11-29 23:13:05,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 392. [2020-11-29 23:13:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-11-29 23:13:05,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 537 transitions. [2020-11-29 23:13:05,264 INFO L714 BuchiCegarLoop]: Abstraction has 392 states and 537 transitions. [2020-11-29 23:13:05,264 INFO L594 BuchiCegarLoop]: Abstraction has 392 states and 537 transitions. [2020-11-29 23:13:05,264 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 23:13:05,265 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 392 states and 537 transitions. [2020-11-29 23:13:05,268 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 274 [2020-11-29 23:13:05,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:13:05,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:13:05,272 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:05,272 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, 1, 1] [2020-11-29 23:13:05,272 INFO L794 eck$LassoCheckResult]: Stem: 2109#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~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);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~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);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);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 1954#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~4, main_~tmp~1;havoc main_~retValue_acc~4;havoc main_~tmp~1; 1955#L642 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 2036#L650 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 2080#L302 assume 0 != main_~tmp~1; 1942#L274 ~switchedOnBeforeTS~0 := 0; 1943#L51 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1947#L72-1 [2020-11-29 23:13:05,273 INFO L796 eck$LassoCheckResult]: Loop: 1947#L72-1 assume !false; 2250#L564 assume test_~splverifierCounter~0 < 4; 2251#L565 test_~tmp~7 := test_#t~nondet43;havoc test_#t~nondet43; 2305#L573 assume !(0 != test_~tmp~7); 2302#L573-1 test_~tmp___0~3 := test_#t~nondet44;havoc test_#t~nondet44; 2301#L583 assume !(0 != test_~tmp___0~3); 2299#L583-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 2298#L593 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2296#L601-2 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~6;havoc isPumpRunning_~retValue_acc~6;isPumpRunning_~retValue_acc~6 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~6; 2295#L466 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 2045#L61 assume !(0 != ~pumpRunning~0); 1956#L329 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret23, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 1957#L413 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret22, processEnvironment__wrappee__lowWaterSensor_~tmp~3;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~3; 1939#L387-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 1940#L361-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 2254#L184-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 2114#L189-3 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 2253#L515-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 2030#L515-11 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 2017#L521-3 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 1950#L365-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 1938#L336 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 2099#L176 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 2100#L72 assume 2 != __utac_acc__Specification5_spec__3_~tmp~0;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~6;havoc isPumpRunning_~retValue_acc~6;isPumpRunning_~retValue_acc~6 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~6; 2015#L466-1 __utac_acc__Specification5_spec__3_#t~ret9 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret9;havoc __utac_acc__Specification5_spec__3_#t~ret9; 2016#L76 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 1947#L72-1 [2020-11-29 23:13:05,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:05,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2020-11-29 23:13:05,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:05,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443448973] [2020-11-29 23:13:05,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:05,348 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:05,384 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:05,394 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:05,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:05,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1945086951, now seen corresponding path program 1 times [2020-11-29 23:13:05,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:05,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408075747] [2020-11-29 23:13:05,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:05,401 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:05,405 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:05,409 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:05,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:05,410 INFO L82 PathProgramCache]: Analyzing trace with hash -21124691, now seen corresponding path program 1 times [2020-11-29 23:13:05,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:05,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547400356] [2020-11-29 23:13:05,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:05,441 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:05,498 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:05,514 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:05,698 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-11-29 23:14:22,420 WARN L193 SmtUtils]: Spent 1.28 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2020-11-29 23:15:09,138 WARN L193 SmtUtils]: Spent 46.69 s on a formula simplification that was a NOOP. DAG size: 435 [2020-11-29 23:15:09,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 11:15:09 BoogieIcfgContainer [2020-11-29 23:15:09,566 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 23:15:09,567 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:15:09,567 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:15:09,567 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:15:09,568 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:13:03" (3/4) ... [2020-11-29 23:15:09,571 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 23:15:09,644 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b0915776-bcdd-44b8-98e7-8c125ba895fd/bin/uautomizer/witness.graphml [2020-11-29 23:15:09,644 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:15:09,645 INFO L168 Benchmark]: Toolchain (without parser) took 128630.27 ms. Allocated memory was 125.8 MB in the beginning and 197.1 MB in the end (delta: 71.3 MB). Free memory was 96.4 MB in the beginning and 85.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 80.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:09,646 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory was 41.5 MB in the beginning and 41.5 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:15:09,646 INFO L168 Benchmark]: CACSL2BoogieTranslator took 586.33 ms. Allocated memory is still 125.8 MB. Free memory was 96.4 MB in the beginning and 91.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:09,647 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.18 ms. Allocated memory is still 125.8 MB. Free memory was 91.5 MB in the beginning and 86.4 MB in the end (delta: 5.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:09,647 INFO L168 Benchmark]: Boogie Preprocessor took 92.82 ms. Allocated memory is still 125.8 MB. Free memory was 86.4 MB in the beginning and 83.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:09,648 INFO L168 Benchmark]: RCFGBuilder took 1315.29 ms. Allocated memory is still 125.8 MB. Free memory was 83.1 MB in the beginning and 81.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:09,648 INFO L168 Benchmark]: BuchiAutomizer took 126445.32 ms. Allocated memory was 125.8 MB in the beginning and 197.1 MB in the end (delta: 71.3 MB). Free memory was 81.0 MB in the beginning and 87.4 MB in the end (delta: -6.4 MB). Peak memory consumption was 103.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:09,649 INFO L168 Benchmark]: Witness Printer took 77.12 ms. Allocated memory is still 197.1 MB. Free memory was 87.4 MB in the beginning and 85.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:15:09,652 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory was 41.5 MB in the beginning and 41.5 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 586.33 ms. Allocated memory is still 125.8 MB. Free memory was 96.4 MB in the beginning and 91.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.18 ms. Allocated memory is still 125.8 MB. Free memory was 91.5 MB in the beginning and 86.4 MB in the end (delta: 5.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 92.82 ms. Allocated memory is still 125.8 MB. Free memory was 86.4 MB in the beginning and 83.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1315.29 ms. Allocated memory is still 125.8 MB. Free memory was 83.1 MB in the beginning and 81.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 126445.32 ms. Allocated memory was 125.8 MB in the beginning and 197.1 MB in the end (delta: 71.3 MB). Free memory was 81.0 MB in the beginning and 87.4 MB in the end (delta: -6.4 MB). Peak memory consumption was 103.8 MB. Max. memory is 16.1 GB. * Witness Printer took 77.12 ms. Allocated memory is still 197.1 MB. Free memory was 87.4 MB in the beginning and 85.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 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 392 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 126.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 125.3s. Construction of modules took 0.4s. 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 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 524 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 392 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 905 SDtfs, 1446 SDslu, 1171 SDs, 0 SdLazy, 232 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 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: 563]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=11431} State at position 1 is {NULL=0, NULL=11431, NULL=11450, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69594cac=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72c46582=61, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5e293352=0, NULL=11445, NULL=11459, methaneLevelCritical=0, NULL=11446, retValue_acc=1, NULL=0, tmp=0, NULL=11443, NULL=0, retValue_acc=0, tmp___1=0, NULL=0, NULL=11453, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d79599f=0, cleanupTimeShifts=4, NULL=11438, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f144d5f=0, waterLevel=1, NULL=0, NULL=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=0, tmp=1, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27d6ba1c=0, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, NULL=0, NULL=0, NULL=11432, NULL=0, tmp___0=0, NULL=0, tmp=1, NULL=11435, NULL=11436, NULL=11456, head=0, tmp=0, NULL=0, NULL=0, NULL=11434, NULL=11437, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66d28040=0, NULL=11433, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1b3e0abc=0, retValue_acc=0, NULL=11448, NULL=0, tmp___0=0, NULL=0, NULL=11447, NULL=0, tmp=0, tmp=1, NULL=0, NULL=11441, NULL=11455, switchedOnBeforeTS=0, tmp=0, \result=0, NULL=0, systemActive=1, NULL=11452, \result=1, NULL=0, \result=0, NULL=11458, tmp___0=0, \result=0, NULL=0, NULL=11444, NULL=0, NULL=0, NULL=11449, NULL=11457, NULL=11442, tmp___2=61, splverifierCounter=0, NULL=0, NULL=11439, NULL=11451, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2183827b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3bae271=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f2926b5=0, NULL=11440, NULL=11454, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72904a02=0, NULL=0, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L45] int switchedOnBeforeTS ; [L101] int waterLevel = 1; [L102] int methaneLevelCritical = 0; [L213] int cleanupTimeShifts = 4; [L319] int pumpRunning = 0; [L320] int systemActive = 1; [L824] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L293] int retValue_acc ; [L294] int tmp ; [L646] int retValue_acc ; [L649] retValue_acc = 1 [L650] return (retValue_acc); [L300] tmp = valid_product() [L302] COND TRUE \read(tmp) [L50] switchedOnBeforeTS = 0 [L554] int splverifierCounter ; [L555] int tmp ; [L556] int tmp___0 ; [L557] int tmp___1 ; [L558] int tmp___2 ; [L561] splverifierCounter = 0 Loop: [L563] COND TRUE 1 [L565] COND TRUE splverifierCounter < 4 [L571] tmp = __VERIFIER_nondet_int() [L573] COND FALSE !(\read(tmp)) [L581] tmp___0 = __VERIFIER_nondet_int() [L583] COND FALSE !(\read(tmp___0)) [L591] tmp___2 = __VERIFIER_nondet_int() [L593] COND TRUE \read(tmp___2) [L548] systemActive = 1 [L462] int retValue_acc ; [L465] retValue_acc = pumpRunning [L466] return (retValue_acc); [L59] switchedOnBeforeTS = isPumpRunning() [L329] COND FALSE !(\read(pumpRunning)) [L336] COND TRUE \read(systemActive) [L410] int tmp ; [L413] COND FALSE !(\read(pumpRunning)) [L384] int tmp ; [L387] COND FALSE !(\read(pumpRunning)) [L358] int tmp ; [L361] COND TRUE ! pumpRunning [L507] int retValue_acc ; [L508] int tmp ; [L509] int tmp___0 ; [L181] int retValue_acc ; [L184] COND TRUE waterLevel < 2 [L185] retValue_acc = 1 [L186] return (retValue_acc); [L513] tmp = isHighWaterSensorDry() [L515] COND TRUE \read(tmp) [L516] tmp___0 = 0 [L520] retValue_acc = tmp___0 [L521] return (retValue_acc); [L363] tmp = isHighWaterLevel() [L365] COND FALSE !(\read(tmp)) [L65] int tmp ; [L66] int tmp___0 ; [L172] int retValue_acc ; [L175] retValue_acc = waterLevel [L176] return (retValue_acc); [L70] tmp = getWaterLevel() [L72] COND TRUE tmp != 2 [L462] int retValue_acc ; [L465] retValue_acc = pumpRunning [L466] return (retValue_acc); [L74] tmp___0 = isPumpRunning() [L76] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...