./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_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_902fe9d8-7af1-4180-8b2c-ef99a7c8278c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_902fe9d8-7af1-4180-8b2c-ef99a7c8278c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_902fe9d8-7af1-4180-8b2c-ef99a7c8278c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_902fe9d8-7af1-4180-8b2c-ef99a7c8278c/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product54.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_902fe9d8-7af1-4180-8b2c-ef99a7c8278c/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_902fe9d8-7af1-4180-8b2c-ef99a7c8278c/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 c91e4e85649f1d5114ec79d2c6b873f11539f5ec .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:15:31,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:15:31,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:15:31,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:15:31,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:15:31,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:15:31,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:15:31,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:15:31,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:15:31,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:15:31,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:15:31,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:15:31,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:15:31,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:15:31,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:15:31,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:15:31,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:15:31,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:15:31,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:15:31,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:15:31,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:15:31,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:15:31,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:15:31,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:15:31,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:15:31,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:15:31,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:15:31,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:15:31,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:15:31,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:15:31,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:15:31,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:15:31,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:15:31,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:15:31,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:15:31,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:15:31,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:15:31,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:15:31,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:15:31,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:15:31,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:15:31,770 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_902fe9d8-7af1-4180-8b2c-ef99a7c8278c/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 20:15:31,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:15:31,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:15:31,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:15:31,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:15:31,809 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:15:31,810 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 20:15:31,810 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 20:15:31,811 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 20:15:31,811 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 20:15:31,811 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 20:15:31,812 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 20:15:31,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:15:31,812 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:15:31,813 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:15:31,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:15:31,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:15:31,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:15:31,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 20:15:31,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 20:15:31,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 20:15:31,815 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:15:31,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:15:31,815 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 20:15:31,816 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:15:31,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 20:15:31,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:15:31,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:15:31,817 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 20:15:31,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:15:31,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:15:31,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:15:31,818 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 20:15:31,819 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 20:15:31,820 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_902fe9d8-7af1-4180-8b2c-ef99a7c8278c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_902fe9d8-7af1-4180-8b2c-ef99a7c8278c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c91e4e85649f1d5114ec79d2c6b873f11539f5ec [2020-11-29 20:15:32,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:15:32,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:15:32,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:15:32,197 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:15:32,198 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:15:32,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_902fe9d8-7af1-4180-8b2c-ef99a7c8278c/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product54.cil.c [2020-11-29 20:15:32,275 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_902fe9d8-7af1-4180-8b2c-ef99a7c8278c/bin/uautomizer/data/b46412173/c09f4e79ab7c4dcb863e0d4c511f7449/FLAG968c1bd4a [2020-11-29 20:15:32,909 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:15:32,909 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_902fe9d8-7af1-4180-8b2c-ef99a7c8278c/sv-benchmarks/c/product-lines/minepump_spec3_product54.cil.c [2020-11-29 20:15:32,935 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_902fe9d8-7af1-4180-8b2c-ef99a7c8278c/bin/uautomizer/data/b46412173/c09f4e79ab7c4dcb863e0d4c511f7449/FLAG968c1bd4a [2020-11-29 20:15:33,156 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_902fe9d8-7af1-4180-8b2c-ef99a7c8278c/bin/uautomizer/data/b46412173/c09f4e79ab7c4dcb863e0d4c511f7449 [2020-11-29 20:15:33,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:15:33,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:15:33,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:15:33,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:15:33,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:15:33,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:15:33" (1/1) ... [2020-11-29 20:15:33,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d4e794f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:33, skipping insertion in model container [2020-11-29 20:15:33,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:15:33" (1/1) ... [2020-11-29 20:15:33,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:15:33,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:15:33,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:15:33,665 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:15:33,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:15:33,887 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:15:33,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:33 WrapperNode [2020-11-29 20:15:33,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:15:33,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:15:33,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:15:33,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:15:33,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:33" (1/1) ... [2020-11-29 20:15:33,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:33" (1/1) ... [2020-11-29 20:15:34,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:15:34,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:15:34,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:15:34,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:15:34,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:33" (1/1) ... [2020-11-29 20:15:34,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:33" (1/1) ... [2020-11-29 20:15:34,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:33" (1/1) ... [2020-11-29 20:15:34,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:33" (1/1) ... [2020-11-29 20:15:34,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:33" (1/1) ... [2020-11-29 20:15:34,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:33" (1/1) ... [2020-11-29 20:15:34,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:33" (1/1) ... [2020-11-29 20:15:34,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:15:34,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:15:34,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:15:34,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:15:34,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_902fe9d8-7af1-4180-8b2c-ef99a7c8278c/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 20:15:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:15:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:15:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:15:34,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:15:35,880 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:15:35,881 INFO L298 CfgBuilder]: Removed 290 assume(true) statements. [2020-11-29 20:15:35,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:15:35 BoogieIcfgContainer [2020-11-29 20:15:35,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:15:35,884 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 20:15:35,884 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 20:15:35,888 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 20:15:35,888 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:15:35,889 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 08:15:33" (1/3) ... [2020-11-29 20:15:35,890 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@65ceb11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:15:35, skipping insertion in model container [2020-11-29 20:15:35,890 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:15:35,890 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:33" (2/3) ... [2020-11-29 20:15:35,891 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@65ceb11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:15:35, skipping insertion in model container [2020-11-29 20:15:35,891 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:15:35,891 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:15:35" (3/3) ... [2020-11-29 20:15:35,893 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2020-11-29 20:15:36,001 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 20:15:36,001 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 20:15:36,001 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 20:15:36,001 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:15:36,001 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:15:36,002 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 20:15:36,002 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:15:36,002 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 20:15:36,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 195 states. [2020-11-29 20:15:36,113 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 127 [2020-11-29 20:15:36,114 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:15:36,114 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:15:36,131 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:15:36,132 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:15:36,132 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 20:15:36,132 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 195 states. [2020-11-29 20:15:36,150 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 127 [2020-11-29 20:15:36,151 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:15:36,151 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:15:36,153 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:15:36,153 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:15:36,159 INFO L794 eck$LassoCheckResult]: Stem: 78#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(21);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 7#L-1true havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0; 112#L321true havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 8#L329true main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 5#L241true assume 0 != main_~tmp~0; 108#L214true havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 110#L280-1true [2020-11-29 20:15:36,160 INFO L796 eck$LassoCheckResult]: Loop: 110#L280-1true assume !false; 196#L712true assume test_~splverifierCounter~0 < 4; 156#L713true test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 82#L721true assume !(0 != test_~tmp~5); 85#L721-1true test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 9#L731true assume !(0 != test_~tmp___0~1); 11#L731-1true test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 38#L741true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 46#L749-2true assume !(0 != ~pumpRunning~0); 122#L777true assume !(0 != ~systemActive~0); 192#L784true havoc __utac_acc__Specification3_spec__1_#t~ret18, __utac_acc__Specification3_spec__1_#t~ret19, __utac_acc__Specification3_spec__1_#t~ret20, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 95#L93-1true __utac_acc__Specification3_spec__1_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret18;havoc __utac_acc__Specification3_spec__1_#t~ret18; 6#L274true assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; 110#L280-1true [2020-11-29 20:15:36,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:36,168 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-29 20:15:36,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:36,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315776240] [2020-11-29 20:15:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:36,521 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:36,618 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:36,670 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:15:36,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:36,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1675526986, now seen corresponding path program 1 times [2020-11-29 20:15:36,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:36,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109196246] [2020-11-29 20:15:36,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:36,781 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 20:15:36,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109196246] [2020-11-29 20:15:36,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:36,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:15:36,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035899695] [2020-11-29 20:15:36,788 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 20:15:36,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:36,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:15:36,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:15:36,804 INFO L87 Difference]: Start difference. First operand 195 states. Second operand 3 states. [2020-11-29 20:15:36,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:36,888 INFO L93 Difference]: Finished difference Result 192 states and 284 transitions. [2020-11-29 20:15:36,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:15:36,890 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 192 states and 284 transitions. [2020-11-29 20:15:36,902 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 123 [2020-11-29 20:15:36,913 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 192 states to 185 states and 276 transitions. [2020-11-29 20:15:36,914 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 185 [2020-11-29 20:15:36,916 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 185 [2020-11-29 20:15:36,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 276 transitions. [2020-11-29 20:15:36,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:15:36,919 INFO L691 BuchiCegarLoop]: Abstraction has 185 states and 276 transitions. [2020-11-29 20:15:36,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 276 transitions. [2020-11-29 20:15:36,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2020-11-29 20:15:36,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-11-29 20:15:36,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 276 transitions. [2020-11-29 20:15:36,960 INFO L714 BuchiCegarLoop]: Abstraction has 185 states and 276 transitions. [2020-11-29 20:15:36,961 INFO L594 BuchiCegarLoop]: Abstraction has 185 states and 276 transitions. [2020-11-29 20:15:36,961 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 20:15:36,961 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 185 states and 276 transitions. [2020-11-29 20:15:36,966 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 123 [2020-11-29 20:15:36,978 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:15:36,978 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:15:36,979 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:15:36,979 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:15:36,980 INFO L794 eck$LassoCheckResult]: Stem: 544#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(21);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 406#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0; 404#L321 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 405#L329 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 399#L241 assume 0 != main_~tmp~0; 400#L214 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 402#L280-1 [2020-11-29 20:15:36,980 INFO L796 eck$LassoCheckResult]: Loop: 402#L280-1 assume !false; 580#L712 assume test_~splverifierCounter~0 < 4; 521#L713 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 522#L721 assume !(0 != test_~tmp~5); 553#L721-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 407#L731 assume !(0 != test_~tmp___0~1); 408#L731-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 413#L741 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 511#L749-2 assume !(0 != ~pumpRunning~0); 469#L777 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret63, processEnvironment_~tmp~8;havoc processEnvironment_~tmp~8; 470#L861 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret62, processEnvironment__wrappee__lowWaterSensor_~tmp~7;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~7; 452#L835-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 454#L809-3 assume !(0 == ~pumpRunning~0); 451#L784 havoc __utac_acc__Specification3_spec__1_#t~ret18, __utac_acc__Specification3_spec__1_#t~ret19, __utac_acc__Specification3_spec__1_#t~ret20, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 569#L93-1 __utac_acc__Specification3_spec__1_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret18;havoc __utac_acc__Specification3_spec__1_#t~ret18; 401#L274 assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; 402#L280-1 [2020-11-29 20:15:36,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:36,981 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-29 20:15:36,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:36,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060651781] [2020-11-29 20:15:36,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:37,102 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:37,214 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:37,235 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:15:37,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:37,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1905346327, now seen corresponding path program 1 times [2020-11-29 20:15:37,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:37,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363586486] [2020-11-29 20:15:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:37,271 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 20:15:37,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363586486] [2020-11-29 20:15:37,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:37,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:15:37,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199825572] [2020-11-29 20:15:37,273 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 20:15:37,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:37,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:15:37,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:15:37,275 INFO L87 Difference]: Start difference. First operand 185 states and 276 transitions. cyclomatic complexity: 93 Second operand 3 states. [2020-11-29 20:15:37,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:37,496 INFO L93 Difference]: Finished difference Result 196 states and 273 transitions. [2020-11-29 20:15:37,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:15:37,497 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 196 states and 273 transitions. [2020-11-29 20:15:37,502 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 134 [2020-11-29 20:15:37,509 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 196 states to 196 states and 273 transitions. [2020-11-29 20:15:37,510 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 196 [2020-11-29 20:15:37,510 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 196 [2020-11-29 20:15:37,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 196 states and 273 transitions. [2020-11-29 20:15:37,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:15:37,519 INFO L691 BuchiCegarLoop]: Abstraction has 196 states and 273 transitions. [2020-11-29 20:15:37,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states and 273 transitions. [2020-11-29 20:15:37,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-11-29 20:15:37,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-11-29 20:15:37,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 273 transitions. [2020-11-29 20:15:37,549 INFO L714 BuchiCegarLoop]: Abstraction has 196 states and 273 transitions. [2020-11-29 20:15:37,549 INFO L594 BuchiCegarLoop]: Abstraction has 196 states and 273 transitions. [2020-11-29 20:15:37,549 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 20:15:37,549 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 196 states and 273 transitions. [2020-11-29 20:15:37,552 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 134 [2020-11-29 20:15:37,557 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:15:37,557 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:15:37,558 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:15:37,560 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:15:37,560 INFO L794 eck$LassoCheckResult]: Stem: 912#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(21);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 793#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0; 788#L321 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 789#L329 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 786#L241 assume 0 != main_~tmp~0; 787#L214 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 791#L280-1 [2020-11-29 20:15:37,561 INFO L796 eck$LassoCheckResult]: Loop: 791#L280-1 assume !false; 938#L712 assume test_~splverifierCounter~0 < 4; 939#L713 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 969#L721 assume !(0 != test_~tmp~5); 967#L721-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 966#L731 assume !(0 != test_~tmp___0~1); 800#L731-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 801#L741 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 889#L749-2 assume !(0 != ~pumpRunning~0); 851#L777 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret63, processEnvironment_~tmp~8;havoc processEnvironment_~tmp~8; 852#L861 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret62, processEnvironment__wrappee__lowWaterSensor_~tmp~7;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~7; 839#L835-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 840#L809-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret81, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~9, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~9;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 862#L133-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 863#L138-3 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 875#L963-9 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 905#L963-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 902#L969-3 processEnvironment__wrappee__highWaterSensor_#t~ret61 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret61;havoc processEnvironment__wrappee__highWaterSensor_#t~ret61; 847#L813-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 838#L784 havoc __utac_acc__Specification3_spec__1_#t~ret18, __utac_acc__Specification3_spec__1_#t~ret19, __utac_acc__Specification3_spec__1_#t~ret20, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 929#L93-1 __utac_acc__Specification3_spec__1_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret18;havoc __utac_acc__Specification3_spec__1_#t~ret18; 790#L274 assume 0 != __utac_acc__Specification3_spec__1_~tmp~1; 791#L280-1 [2020-11-29 20:15:37,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:37,564 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-29 20:15:37,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:37,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517112884] [2020-11-29 20:15:37,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:37,697 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:37,788 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:37,815 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:15:37,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:37,818 INFO L82 PathProgramCache]: Analyzing trace with hash -659266411, now seen corresponding path program 1 times [2020-11-29 20:15:37,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:37,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833353845] [2020-11-29 20:15:37,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:37,833 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:37,842 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:37,857 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:15:37,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:37,858 INFO L82 PathProgramCache]: Analyzing trace with hash 594038715, now seen corresponding path program 1 times [2020-11-29 20:15:37,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:37,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489501629] [2020-11-29 20:15:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:37,949 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 20:15:37,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489501629] [2020-11-29 20:15:37,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:37,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:15:37,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262661782] [2020-11-29 20:15:38,132 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-11-29 20:15:38,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:38,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:15:38,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:15:38,244 INFO L87 Difference]: Start difference. First operand 196 states and 273 transitions. cyclomatic complexity: 79 Second operand 5 states. [2020-11-29 20:15:38,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:38,478 INFO L93 Difference]: Finished difference Result 656 states and 915 transitions. [2020-11-29 20:15:38,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:15:38,478 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 656 states and 915 transitions. [2020-11-29 20:15:38,488 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 472 [2020-11-29 20:15:38,497 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 656 states to 656 states and 915 transitions. [2020-11-29 20:15:38,498 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 656 [2020-11-29 20:15:38,500 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 656 [2020-11-29 20:15:38,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 656 states and 915 transitions. [2020-11-29 20:15:38,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:15:38,507 INFO L691 BuchiCegarLoop]: Abstraction has 656 states and 915 transitions. [2020-11-29 20:15:38,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states and 915 transitions. [2020-11-29 20:15:38,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 386. [2020-11-29 20:15:38,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-11-29 20:15:38,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 532 transitions. [2020-11-29 20:15:38,553 INFO L714 BuchiCegarLoop]: Abstraction has 386 states and 532 transitions. [2020-11-29 20:15:38,553 INFO L594 BuchiCegarLoop]: Abstraction has 386 states and 532 transitions. [2020-11-29 20:15:38,553 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 20:15:38,553 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 386 states and 532 transitions. [2020-11-29 20:15:38,556 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 268 [2020-11-29 20:15:38,557 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:15:38,557 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:15:38,558 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:15:38,559 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 20:15:38,559 INFO L794 eck$LassoCheckResult]: Stem: 1793#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(21);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(30);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(9);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(25);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1662#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0; 1660#L321 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 1661#L329 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 1656#L241 assume 0 != main_~tmp~0; 1657#L214 havoc test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_#t~nondet60, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1745#L280-1 [2020-11-29 20:15:38,559 INFO L796 eck$LassoCheckResult]: Loop: 1745#L280-1 assume !false; 1827#L712 assume test_~splverifierCounter~0 < 4; 1772#L713 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 1773#L721 assume !(0 != test_~tmp~5); 1798#L721-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 1663#L731 assume !(0 != test_~tmp___0~1); 1664#L731-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 1669#L741 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1763#L749-2 assume !(0 != ~pumpRunning~0); 2011#L777 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret63, processEnvironment_~tmp~8;havoc processEnvironment_~tmp~8; 2029#L861 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret62, processEnvironment__wrappee__lowWaterSensor_~tmp~7;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~7; 2004#L835-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 2015#L809-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret81, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~9, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~9;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 2012#L133-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 2009#L138-3 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 2008#L963-9 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 2007#L963-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 2006#L969-3 processEnvironment__wrappee__highWaterSensor_#t~ret61 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret61;havoc processEnvironment__wrappee__highWaterSensor_#t~ret61; 1717#L813-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 1708#L784 havoc __utac_acc__Specification3_spec__1_#t~ret18, __utac_acc__Specification3_spec__1_#t~ret19, __utac_acc__Specification3_spec__1_#t~ret20, __utac_acc__Specification3_spec__1_~tmp~1, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 1822#L93-1 __utac_acc__Specification3_spec__1_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~1 := __utac_acc__Specification3_spec__1_#t~ret18;havoc __utac_acc__Specification3_spec__1_#t~ret18; 1658#L274 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~1);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; 1659#L125 __utac_acc__Specification3_spec__1_#t~ret19 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret19;havoc __utac_acc__Specification3_spec__1_#t~ret19; 1829#L280 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 1745#L280-1 [2020-11-29 20:15:38,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:38,560 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2020-11-29 20:15:38,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:38,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707793162] [2020-11-29 20:15:38,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:38,633 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:38,678 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:38,691 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:15:38,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:38,692 INFO L82 PathProgramCache]: Analyzing trace with hash 2100150185, now seen corresponding path program 1 times [2020-11-29 20:15:38,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:38,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287391564] [2020-11-29 20:15:38,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:38,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:38,713 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:38,719 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:15:38,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:38,720 INFO L82 PathProgramCache]: Analyzing trace with hash -359433905, now seen corresponding path program 1 times [2020-11-29 20:15:38,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:38,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598392107] [2020-11-29 20:15:38,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:38,760 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:38,792 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:38,814 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:15:39,080 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-11-29 20:15:39,183 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-11-29 20:17:11,761 WARN L193 SmtUtils]: Spent 1.54 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-29 20:18:10,165 WARN L193 SmtUtils]: Spent 58.39 s on a formula simplification that was a NOOP. DAG size: 433 [2020-11-29 20:18:10,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 08:18:10 BoogieIcfgContainer [2020-11-29 20:18:10,441 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 20:18:10,442 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:18:10,442 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:18:10,442 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:18:10,443 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:15:35" (3/4) ... [2020-11-29 20:18:10,446 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 20:18:10,521 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_902fe9d8-7af1-4180-8b2c-ef99a7c8278c/bin/uautomizer/witness.graphml [2020-11-29 20:18:10,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:18:10,528 INFO L168 Benchmark]: Toolchain (without parser) took 157366.66 ms. Allocated memory was 90.2 MB in the beginning and 169.9 MB in the end (delta: 79.7 MB). Free memory was 52.7 MB in the beginning and 71.1 MB in the end (delta: -18.4 MB). Peak memory consumption was 59.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:18:10,528 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory is still 69.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:18:10,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.88 ms. Allocated memory is still 90.2 MB. Free memory was 52.5 MB in the beginning and 55.6 MB in the end (delta: -3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:18:10,529 INFO L168 Benchmark]: Boogie Procedure Inliner took 130.43 ms. Allocated memory is still 90.2 MB. Free memory was 55.6 MB in the beginning and 50.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:18:10,530 INFO L168 Benchmark]: Boogie Preprocessor took 94.95 ms. Allocated memory is still 90.2 MB. Free memory was 50.9 MB in the beginning and 47.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:18:10,532 INFO L168 Benchmark]: RCFGBuilder took 1765.05 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 47.3 MB in the beginning and 64.8 MB in the end (delta: -17.6 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:18:10,534 INFO L168 Benchmark]: BuchiAutomizer took 154557.16 ms. Allocated memory was 109.1 MB in the beginning and 169.9 MB in the end (delta: 60.8 MB). Free memory was 64.8 MB in the beginning and 74.1 MB in the end (delta: -9.2 MB). Peak memory consumption was 92.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:18:10,535 INFO L168 Benchmark]: Witness Printer took 84.38 ms. Allocated memory is still 169.9 MB. Free memory was 74.1 MB in the beginning and 71.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:18:10,538 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory is still 69.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 719.88 ms. Allocated memory is still 90.2 MB. Free memory was 52.5 MB in the beginning and 55.6 MB in the end (delta: -3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 130.43 ms. Allocated memory is still 90.2 MB. Free memory was 55.6 MB in the beginning and 50.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 94.95 ms. Allocated memory is still 90.2 MB. Free memory was 50.9 MB in the beginning and 47.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1765.05 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 47.3 MB in the beginning and 64.8 MB in the end (delta: -17.6 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 154557.16 ms. Allocated memory was 109.1 MB in the beginning and 169.9 MB in the end (delta: 60.8 MB). Free memory was 64.8 MB in the beginning and 74.1 MB in the end (delta: -9.2 MB). Peak memory consumption was 92.5 MB. Max. memory is 16.1 GB. * Witness Printer took 84.38 ms. Allocated memory is still 169.9 MB. Free memory was 74.1 MB in the beginning and 71.1 MB in the end (delta: 3.0 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 386 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 154.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 153.4s. Construction of modules took 0.3s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 270 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 386 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 818 SDtfs, 1302 SDslu, 1078 SDs, 0 SdLazy, 116 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 711]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=28015} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d95f556=0, NULL=28028, NULL=28015, NULL=0, NULL=0, NULL=0, methaneLevelCritical=0, NULL=28020, tmp=0, NULL=0, NULL=28026, tmp___1=0, NULL=0, tmp=0, cleanupTimeShifts=4, NULL=28043, NULL=28030, NULL=28040, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23eeb20a=0, NULL=0, NULL=28027, \result=1, retValue_acc=1, head=0, pumpRunning=0, tmp=1, NULL=28024, retValue_acc=1, NULL=0, \result=1, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=0, tmp___0=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@45c02d5f=0, NULL=28023, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a222e1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@91be7f3=0, tmp=0, NULL=28039, retValue_acc=0, NULL=0, retValue_acc=0, NULL=0, NULL=0, NULL=28025, NULL=28031, tmp___0=0, NULL=0, tmp=0, NULL=28032, NULL=28036, NULL=0, NULL=0, NULL=0, tmp___0=1, NULL=28037, tmp=0, NULL=28018, NULL=0, systemActive=1, \result=1, NULL=0, NULL=28042, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b9b4a78=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@312e86e8=0, NULL=0, NULL=28029, NULL=28035, \result=0, NULL=28017, NULL=28019, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d97308=0, retValue_acc=1, NULL=28022, tmp___2=65, splverifierCounter=0, NULL=0, \result=0, NULL=28016, NULL=28021, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@75dd9aca=65, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@51afbd2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1a9c3b4c=0, tmp___1=0, NULL=28041, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@8ba2e7e=0, NULL=28038, NULL=28034, NULL=28033} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int waterLevel = 1; [L51] int methaneLevelCritical = 0; [L153] int cleanupTimeShifts = 4; [L503] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L770] int pumpRunning = 0; [L771] int systemActive = 1; [L232] int retValue_acc ; [L233] int tmp ; [L325] int retValue_acc ; [L328] retValue_acc = 1 [L329] return (retValue_acc); [L239] tmp = valid_product() [L241] COND TRUE \read(tmp) [L702] int splverifierCounter ; [L703] int tmp ; [L704] int tmp___0 ; [L705] int tmp___1 ; [L706] int tmp___2 ; [L709] splverifierCounter = 0 Loop: [L711] COND TRUE 1 [L713] COND TRUE splverifierCounter < 4 [L719] tmp = __VERIFIER_nondet_int() [L721] COND FALSE !(\read(tmp)) [L729] tmp___0 = __VERIFIER_nondet_int() [L731] COND FALSE !(\read(tmp___0)) [L739] tmp___2 = __VERIFIER_nondet_int() [L741] COND TRUE \read(tmp___2) [L996] systemActive = 1 [L777] COND FALSE !(\read(pumpRunning)) [L784] COND TRUE \read(systemActive) [L858] int tmp ; [L861] COND FALSE !(\read(pumpRunning)) [L832] int tmp ; [L835] COND FALSE !(\read(pumpRunning)) [L806] int tmp ; [L809] COND TRUE ! pumpRunning [L955] int retValue_acc ; [L956] int tmp ; [L957] int tmp___0 ; [L130] int retValue_acc ; [L133] COND TRUE waterLevel < 2 [L134] retValue_acc = 1 [L135] return (retValue_acc); [L961] tmp = isHighWaterSensorDry() [L963] COND TRUE \read(tmp) [L964] tmp___0 = 0 [L968] retValue_acc = tmp___0 [L969] return (retValue_acc); [L811] tmp = isHighWaterLevel() [L813] COND FALSE !(\read(tmp)) [L266] int tmp ; [L267] int tmp___0 ; [L268] int tmp___1 ; [L89] int retValue_acc ; [L92] retValue_acc = methaneLevelCritical [L93] return (retValue_acc); [L272] tmp = isMethaneLevelCritical() [L274] COND FALSE !(\read(tmp)) [L121] int retValue_acc ; [L124] retValue_acc = waterLevel [L125] return (retValue_acc); [L278] tmp___0 = getWaterLevel() [L280] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...