./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_dc878f74-e49f-4c5d-bdc5-4c2cf777e6b4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dc878f74-e49f-4c5d-bdc5-4c2cf777e6b4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dc878f74-e49f-4c5d-bdc5-4c2cf777e6b4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dc878f74-e49f-4c5d-bdc5-4c2cf777e6b4/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_dc878f74-e49f-4c5d-bdc5-4c2cf777e6b4/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dc878f74-e49f-4c5d-bdc5-4c2cf777e6b4/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 c018b62812d53c857c48baba878052abd5ef0585 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-69874e2 [2020-12-01 15:08:42,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:08:42,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:08:42,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:08:42,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:08:42,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:08:42,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:08:42,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:08:42,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:08:42,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:08:42,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:08:42,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:08:42,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:08:42,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:08:42,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:08:42,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:08:42,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:08:42,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:08:42,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:08:42,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:08:42,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:08:42,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:08:42,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:08:42,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:08:42,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:08:42,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:08:42,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:08:42,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:08:42,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:08:42,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:08:42,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:08:42,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:08:42,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:08:42,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:08:42,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:08:42,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:08:42,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:08:42,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:08:42,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:08:42,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:08:42,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:08:42,900 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dc878f74-e49f-4c5d-bdc5-4c2cf777e6b4/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-12-01 15:08:42,927 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:08:42,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:08:42,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:08:42,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:08:42,929 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:08:42,930 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-12-01 15:08:42,930 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-12-01 15:08:42,930 INFO L138 SettingsManager]: * Use old map elimination=false [2020-12-01 15:08:42,930 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-12-01 15:08:42,931 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-12-01 15:08:42,931 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-12-01 15:08:42,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:08:42,931 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:08:42,931 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 15:08:42,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:08:42,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:08:42,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:08:42,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-12-01 15:08:42,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-12-01 15:08:42,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-12-01 15:08:42,933 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:08:42,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:08:42,934 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-12-01 15:08:42,934 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:08:42,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-12-01 15:08:42,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:08:42,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:08:42,935 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-12-01 15:08:42,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:08:42,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:08:42,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:08:42,936 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-12-01 15:08:42,937 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-12-01 15:08:42,937 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_dc878f74-e49f-4c5d-bdc5-4c2cf777e6b4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dc878f74-e49f-4c5d-bdc5-4c2cf777e6b4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c018b62812d53c857c48baba878052abd5ef0585 [2020-12-01 15:08:43,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:08:43,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:08:43,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:08:43,199 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:08:43,200 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:08:43,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dc878f74-e49f-4c5d-bdc5-4c2cf777e6b4/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c [2020-12-01 15:08:43,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dc878f74-e49f-4c5d-bdc5-4c2cf777e6b4/bin/uautomizer/data/52486b937/8f5177cc992d449485b713daea310bb6/FLAG9ef37f785 [2020-12-01 15:08:43,827 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:08:43,834 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dc878f74-e49f-4c5d-bdc5-4c2cf777e6b4/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c [2020-12-01 15:08:43,868 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dc878f74-e49f-4c5d-bdc5-4c2cf777e6b4/bin/uautomizer/data/52486b937/8f5177cc992d449485b713daea310bb6/FLAG9ef37f785 [2020-12-01 15:08:44,134 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dc878f74-e49f-4c5d-bdc5-4c2cf777e6b4/bin/uautomizer/data/52486b937/8f5177cc992d449485b713daea310bb6 [2020-12-01 15:08:44,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:08:44,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:08:44,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:08:44,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:08:44,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:08:44,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:08:44" (1/1) ... [2020-12-01 15:08:44,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@369c6625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:08:44, skipping insertion in model container [2020-12-01 15:08:44,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:08:44" (1/1) ... [2020-12-01 15:08:44,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:08:44,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:08:44,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:08:44,589 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:08:44,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:08:44,732 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:08:44,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:08:44 WrapperNode [2020-12-01 15:08:44,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:08:44,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:08:44,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:08:44,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:08:44,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:08:44" (1/1) ... [2020-12-01 15:08:44,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:08:44" (1/1) ... [2020-12-01 15:08:44,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:08:44,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:08:44,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:08:44,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:08:44,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:08:44" (1/1) ... [2020-12-01 15:08:44,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:08:44" (1/1) ... [2020-12-01 15:08:44,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:08:44" (1/1) ... [2020-12-01 15:08:44,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:08:44" (1/1) ... [2020-12-01 15:08:44,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:08:44" (1/1) ... [2020-12-01 15:08:44,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:08:44" (1/1) ... [2020-12-01 15:08:44,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:08:44" (1/1) ... [2020-12-01 15:08:44,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:08:44,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:08:44,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:08:44,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:08:44,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:08:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc878f74-e49f-4c5d-bdc5-4c2cf777e6b4/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 [2020-12-01 15:08:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:08:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:08:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:08:44,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:08:45,986 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:08:45,987 INFO L298 CfgBuilder]: Removed 212 assume(true) statements. [2020-12-01 15:08:45,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:08:45 BoogieIcfgContainer [2020-12-01 15:08:45,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:08:45,992 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-12-01 15:08:45,992 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-12-01 15:08:45,995 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-12-01 15:08:45,996 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 15:08:45,997 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.12 03:08:44" (1/3) ... [2020-12-01 15:08:45,998 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30869bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 03:08:45, skipping insertion in model container [2020-12-01 15:08:45,998 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 15:08:45,998 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:08:44" (2/3) ... [2020-12-01 15:08:45,999 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30869bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 03:08:45, skipping insertion in model container [2020-12-01 15:08:45,999 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 15:08:45,999 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:08:45" (3/3) ... [2020-12-01 15:08:46,002 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product57.cil.c [2020-12-01 15:08:46,058 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-12-01 15:08:46,058 INFO L360 BuchiCegarLoop]: Hoare is false [2020-12-01 15:08:46,058 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-12-01 15:08:46,059 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:08:46,060 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:08:46,060 INFO L364 BuchiCegarLoop]: Difference is false [2020-12-01 15:08:46,060 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:08:46,060 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-12-01 15:08:46,085 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 144 states. [2020-12-01 15:08:46,128 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2020-12-01 15:08:46,129 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:08:46,129 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:08:46,138 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:08:46,138 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:08:46,139 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-12-01 15:08:46,139 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 144 states. [2020-12-01 15:08:46,156 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2020-12-01 15:08:46,158 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:08:46,159 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:08:46,160 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:08:46,160 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:08:46,171 INFO L794 eck$LassoCheckResult]: Stem: 132#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~string10.base, #t~string10.offset := #Ultimate.allocOnStack(13);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string12.base, #t~string12.offset, 1);call write~init~int(77, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(101, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(116, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(104, #t~string12.base, 4 + #t~string12.offset, 1);call write~init~int(58, #t~string12.base, 5 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 6 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string14.base, #t~string14.offset, 1);call write~init~int(82, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(73, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(84, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 4 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(75, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string18.base, #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 1 + #t~string18.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(21);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~string46.base, #t~string46.offset := #Ultimate.allocOnStack(30);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(9);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(25);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~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);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 11#L-1true havoc main_#res;havoc main_#t~ret8, main_~retValue_acc~2, main_~tmp~0;havoc main_~retValue_acc~2;havoc main_~tmp~0; 20#L76true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 10#L84true main_#t~ret8 := valid_product_#res;main_~tmp~0 := main_#t~ret8;havoc main_#t~ret8; 140#L178true assume 0 != main_~tmp~0; 76#L152true ~switchedOnBeforeTS~0 := 0; 136#L674true 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___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 32#L695-1true [2020-12-01 15:08:46,172 INFO L796 eck$LassoCheckResult]: Loop: 32#L695-1true assume !false; 28#L728true assume test_~splverifierCounter~0 < 4; 135#L729true test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 141#L737true assume !(0 != test_~tmp~5); 142#L737-1true test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 45#L747true assume !(0 != test_~tmp___0~1); 46#L747-1true test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 127#L757true assume 0 != test_~tmp___2~0; 61#L763-2true havoc __utac_acc__Specification5_spec__2_#t~ret54;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~11;havoc isPumpRunning_~retValue_acc~11;isPumpRunning_~retValue_acc~11 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~11; 52#L923true __utac_acc__Specification5_spec__2_#t~ret54 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret54;havoc __utac_acc__Specification5_spec__2_#t~ret54; 31#L684true assume !(0 != ~pumpRunning~0); 37#L794true assume !(0 != ~systemActive~0); 123#L801true havoc __utac_acc__Specification5_spec__3_#t~ret55, __utac_acc__Specification5_spec__3_#t~ret56, __utac_acc__Specification5_spec__3_~tmp~4, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~4;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 66#L273true __utac_acc__Specification5_spec__3_#t~ret55 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~4 := __utac_acc__Specification5_spec__3_#t~ret55;havoc __utac_acc__Specification5_spec__3_#t~ret55; 30#L695true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~4); 32#L695-1true [2020-12-01 15:08:46,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:08:46,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2020-12-01 15:08:46,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:08:46,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876627317] [2020-12-01 15:08:46,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:08:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:08:46,493 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:08:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:08:46,650 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:08:46,689 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:08:46,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:08:46,702 INFO L82 PathProgramCache]: Analyzing trace with hash 96782766, now seen corresponding path program 1 times [2020-12-01 15:08:46,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:08:46,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551457005] [2020-12-01 15:08:46,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:08:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:08:46,709 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:08:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:08:46,723 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:08:46,735 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:08:46,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:08:46,737 INFO L82 PathProgramCache]: Analyzing trace with hash 2030807976, now seen corresponding path program 1 times [2020-12-01 15:08:46,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:08:46,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270243474] [2020-12-01 15:08:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:08:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:08:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:08:46,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270243474] [2020-12-01 15:08:46,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:08:46,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:08:46,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447034862] [2020-12-01 15:08:47,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:08:47,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:08:47,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:08:47,019 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 6 states. [2020-12-01 15:08:47,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:08:47,225 INFO L93 Difference]: Finished difference Result 141 states and 199 transitions. [2020-12-01 15:08:47,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:08:47,227 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 141 states and 199 transitions. [2020-12-01 15:08:47,230 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2020-12-01 15:08:47,245 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 141 states to 134 states and 192 transitions. [2020-12-01 15:08:47,246 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 134 [2020-12-01 15:08:47,248 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 134 [2020-12-01 15:08:47,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 134 states and 192 transitions. [2020-12-01 15:08:47,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-12-01 15:08:47,252 INFO L692 BuchiCegarLoop]: Abstraction has 134 states and 192 transitions. [2020-12-01 15:08:47,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states and 192 transitions. [2020-12-01 15:08:47,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-12-01 15:08:47,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-01 15:08:47,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 192 transitions. [2020-12-01 15:08:47,296 INFO L715 BuchiCegarLoop]: Abstraction has 134 states and 192 transitions. [2020-12-01 15:08:47,296 INFO L595 BuchiCegarLoop]: Abstraction has 134 states and 192 transitions. [2020-12-01 15:08:47,296 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-12-01 15:08:47,297 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states and 192 transitions. [2020-12-01 15:08:47,301 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2020-12-01 15:08:47,302 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:08:47,302 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:08:47,304 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:08:47,305 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:08:47,305 INFO L794 eck$LassoCheckResult]: Stem: 435#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~string10.base, #t~string10.offset := #Ultimate.allocOnStack(13);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string12.base, #t~string12.offset, 1);call write~init~int(77, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(101, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(116, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(104, #t~string12.base, 4 + #t~string12.offset, 1);call write~init~int(58, #t~string12.base, 5 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 6 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string14.base, #t~string14.offset, 1);call write~init~int(82, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(73, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(84, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 4 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(75, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string18.base, #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 1 + #t~string18.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(21);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~string46.base, #t~string46.offset := #Ultimate.allocOnStack(30);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(9);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(25);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~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);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 320#L-1 havoc main_#res;havoc main_#t~ret8, main_~retValue_acc~2, main_~tmp~0;havoc main_~retValue_acc~2;havoc main_~tmp~0; 321#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 318#L84 main_#t~ret8 := valid_product_#res;main_~tmp~0 := main_#t~ret8;havoc main_#t~ret8; 319#L178 assume 0 != main_~tmp~0; 405#L152 ~switchedOnBeforeTS~0 := 0; 406#L674 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___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 352#L695-1 [2020-12-01 15:08:47,306 INFO L796 eck$LassoCheckResult]: Loop: 352#L695-1 assume !false; 346#L728 assume test_~splverifierCounter~0 < 4; 347#L729 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 436#L737 assume !(0 != test_~tmp~5); 363#L737-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 371#L747 assume !(0 != test_~tmp___0~1); 373#L747-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 374#L757 assume 0 != test_~tmp___2~0; 390#L763-2 havoc __utac_acc__Specification5_spec__2_#t~ret54;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~11;havoc isPumpRunning_~retValue_acc~11;isPumpRunning_~retValue_acc~11 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~11; 381#L923 __utac_acc__Specification5_spec__2_#t~ret54 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret54;havoc __utac_acc__Specification5_spec__2_#t~ret54; 353#L684 assume !(0 != ~pumpRunning~0); 354#L794 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 324#L852 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 325#L826-1 assume !(0 == ~pumpRunning~0); 327#L801 havoc __utac_acc__Specification5_spec__3_#t~ret55, __utac_acc__Specification5_spec__3_#t~ret56, __utac_acc__Specification5_spec__3_~tmp~4, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~4;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 396#L273 __utac_acc__Specification5_spec__3_#t~ret55 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~4 := __utac_acc__Specification5_spec__3_#t~ret55;havoc __utac_acc__Specification5_spec__3_#t~ret55; 350#L695 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~4); 352#L695-1 [2020-12-01 15:08:47,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:08:47,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2020-12-01 15:08:47,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:08:47,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845702923] [2020-12-01 15:08:47,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:08:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:08:47,383 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:08:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:08:47,447 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:08:47,473 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:08:47,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:08:47,474 INFO L82 PathProgramCache]: Analyzing trace with hash -466767721, now seen corresponding path program 1 times [2020-12-01 15:08:47,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:08:47,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71017381] [2020-12-01 15:08:47,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:08:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:08:47,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:08:47,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71017381] [2020-12-01 15:08:47,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:08:47,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:08:47,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246970858] [2020-12-01 15:08:47,500 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-12-01 15:08:47,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:08:47,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:08:47,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:08:47,503 INFO L87 Difference]: Start difference. First operand 134 states and 192 transitions. cyclomatic complexity: 60 Second operand 3 states. [2020-12-01 15:08:47,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:08:47,612 INFO L93 Difference]: Finished difference Result 183 states and 251 transitions. [2020-12-01 15:08:47,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:08:47,621 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 251 transitions. [2020-12-01 15:08:47,625 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 126 [2020-12-01 15:08:47,630 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 183 states and 251 transitions. [2020-12-01 15:08:47,630 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 183 [2020-12-01 15:08:47,631 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 183 [2020-12-01 15:08:47,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 183 states and 251 transitions. [2020-12-01 15:08:47,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-12-01 15:08:47,637 INFO L692 BuchiCegarLoop]: Abstraction has 183 states and 251 transitions. [2020-12-01 15:08:47,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states and 251 transitions. [2020-12-01 15:08:47,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2020-12-01 15:08:47,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-12-01 15:08:47,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 251 transitions. [2020-12-01 15:08:47,649 INFO L715 BuchiCegarLoop]: Abstraction has 183 states and 251 transitions. [2020-12-01 15:08:47,649 INFO L595 BuchiCegarLoop]: Abstraction has 183 states and 251 transitions. [2020-12-01 15:08:47,650 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-12-01 15:08:47,650 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 183 states and 251 transitions. [2020-12-01 15:08:47,652 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 126 [2020-12-01 15:08:47,652 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:08:47,653 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:08:47,654 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:08:47,655 INFO L854 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] [2020-12-01 15:08:47,655 INFO L794 eck$LassoCheckResult]: Stem: 764#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~string10.base, #t~string10.offset := #Ultimate.allocOnStack(13);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string12.base, #t~string12.offset, 1);call write~init~int(77, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(101, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(116, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(104, #t~string12.base, 4 + #t~string12.offset, 1);call write~init~int(58, #t~string12.base, 5 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 6 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string14.base, #t~string14.offset, 1);call write~init~int(82, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(73, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(84, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 4 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(75, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string18.base, #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 1 + #t~string18.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(21);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~string46.base, #t~string46.offset := #Ultimate.allocOnStack(30);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(9);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(25);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~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);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 645#L-1 havoc main_#res;havoc main_#t~ret8, main_~retValue_acc~2, main_~tmp~0;havoc main_~retValue_acc~2;havoc main_~tmp~0; 646#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 641#L84 main_#t~ret8 := valid_product_#res;main_~tmp~0 := main_#t~ret8;havoc main_#t~ret8; 642#L178 assume 0 != main_~tmp~0; 730#L152 ~switchedOnBeforeTS~0 := 0; 731#L674 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___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 675#L695-1 [2020-12-01 15:08:47,655 INFO L796 eck$LassoCheckResult]: Loop: 675#L695-1 assume !false; 670#L728 assume test_~splverifierCounter~0 < 4; 671#L729 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 765#L737 assume !(0 != test_~tmp~5); 683#L737-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 691#L747 assume !(0 != test_~tmp___0~1); 693#L747-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 694#L757 assume 0 != test_~tmp___2~0; 710#L763-2 havoc __utac_acc__Specification5_spec__2_#t~ret54;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~11;havoc isPumpRunning_~retValue_acc~11;isPumpRunning_~retValue_acc~11 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~11; 701#L923 __utac_acc__Specification5_spec__2_#t~ret54 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret54;havoc __utac_acc__Specification5_spec__2_#t~ret54; 676#L684 assume !(0 != ~pumpRunning~0); 677#L794 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 643#L852 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 644#L826-1 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~5;havoc isHighWaterSensorDry_~retValue_acc~5; 735#L281-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 758#L286-1 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 726#L972-3 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 727#L972-5 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 700#L978-1 processEnvironment__wrappee__highWaterSensor_#t~ret61 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret61;havoc processEnvironment__wrappee__highWaterSensor_#t~ret61; 656#L830-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 650#L801 havoc __utac_acc__Specification5_spec__3_#t~ret55, __utac_acc__Specification5_spec__3_#t~ret56, __utac_acc__Specification5_spec__3_~tmp~4, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~4;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 718#L273 __utac_acc__Specification5_spec__3_#t~ret55 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~4 := __utac_acc__Specification5_spec__3_#t~ret55;havoc __utac_acc__Specification5_spec__3_#t~ret55; 673#L695 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~4); 675#L695-1 [2020-12-01 15:08:47,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:08:47,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2020-12-01 15:08:47,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:08:47,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346514149] [2020-12-01 15:08:47,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:08:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:08:47,705 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:08:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:08:47,794 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:08:47,809 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:08:47,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:08:47,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1396372131, now seen corresponding path program 1 times [2020-12-01 15:08:47,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:08:47,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793960842] [2020-12-01 15:08:47,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:08:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:08:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:08:47,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793960842] [2020-12-01 15:08:47,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:08:47,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:08:47,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73746611] [2020-12-01 15:08:47,861 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-12-01 15:08:47,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:08:47,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:08:47,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:08:47,865 INFO L87 Difference]: Start difference. First operand 183 states and 251 transitions. cyclomatic complexity: 70 Second operand 5 states. [2020-12-01 15:08:48,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:08:48,123 INFO L93 Difference]: Finished difference Result 808 states and 1119 transitions. [2020-12-01 15:08:48,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:08:48,123 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 808 states and 1119 transitions. [2020-12-01 15:08:48,134 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 553 [2020-12-01 15:08:48,141 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 808 states to 808 states and 1119 transitions. [2020-12-01 15:08:48,141 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 808 [2020-12-01 15:08:48,142 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 808 [2020-12-01 15:08:48,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 808 states and 1119 transitions. [2020-12-01 15:08:48,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-12-01 15:08:48,146 INFO L692 BuchiCegarLoop]: Abstraction has 808 states and 1119 transitions. [2020-12-01 15:08:48,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states and 1119 transitions. [2020-12-01 15:08:48,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 356. [2020-12-01 15:08:48,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-12-01 15:08:48,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 483 transitions. [2020-12-01 15:08:48,183 INFO L715 BuchiCegarLoop]: Abstraction has 356 states and 483 transitions. [2020-12-01 15:08:48,183 INFO L595 BuchiCegarLoop]: Abstraction has 356 states and 483 transitions. [2020-12-01 15:08:48,183 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-12-01 15:08:48,183 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 356 states and 483 transitions. [2020-12-01 15:08:48,185 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 250 [2020-12-01 15:08:48,186 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:08:48,186 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:08:48,188 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:08:48,188 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:08:48,188 INFO L794 eck$LassoCheckResult]: Stem: 1795#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~string10.base, #t~string10.offset := #Ultimate.allocOnStack(13);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string12.base, #t~string12.offset, 1);call write~init~int(77, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(101, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(116, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(104, #t~string12.base, 4 + #t~string12.offset, 1);call write~init~int(58, #t~string12.base, 5 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 6 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string14.base, #t~string14.offset, 1);call write~init~int(82, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(73, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(84, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 4 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(75, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string18.base, #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 1 + #t~string18.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(21);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~string46.base, #t~string46.offset := #Ultimate.allocOnStack(30);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(9);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(25);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~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);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1653#L-1 havoc main_#res;havoc main_#t~ret8, main_~retValue_acc~2, main_~tmp~0;havoc main_~retValue_acc~2;havoc main_~tmp~0; 1654#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1651#L84 main_#t~ret8 := valid_product_#res;main_~tmp~0 := main_#t~ret8;havoc main_#t~ret8; 1652#L178 assume 0 != main_~tmp~0; 1748#L152 ~switchedOnBeforeTS~0 := 0; 1749#L674 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___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1798#L695-1 [2020-12-01 15:08:48,188 INFO L796 eck$LassoCheckResult]: Loop: 1798#L695-1 assume !false; 1896#L728 assume test_~splverifierCounter~0 < 4; 1895#L729 test_~tmp~5 := test_#t~nondet57;havoc test_#t~nondet57; 1894#L737 assume !(0 != test_~tmp~5); 1891#L737-1 test_~tmp___0~1 := test_#t~nondet58;havoc test_#t~nondet58; 1890#L747 assume !(0 != test_~tmp___0~1); 1886#L747-1 test_~tmp___2~0 := test_#t~nondet59;havoc test_#t~nondet59; 1884#L757 assume 0 != test_~tmp___2~0; 1881#L763-2 havoc __utac_acc__Specification5_spec__2_#t~ret54;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~11;havoc isPumpRunning_~retValue_acc~11;isPumpRunning_~retValue_acc~11 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~11; 1879#L923 __utac_acc__Specification5_spec__2_#t~ret54 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret54;havoc __utac_acc__Specification5_spec__2_#t~ret54; 1877#L684 assume !(0 != ~pumpRunning~0); 1876#L794 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 1842#L852 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret61, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 1840#L826-1 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~5;havoc isHighWaterSensorDry_~retValue_acc~5; 1839#L281-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 1783#L286-1 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 1838#L972-3 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 1836#L972-5 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 1834#L978-1 processEnvironment__wrappee__highWaterSensor_#t~ret61 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret61;havoc processEnvironment__wrappee__highWaterSensor_#t~ret61; 1832#L830-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 1825#L801 havoc __utac_acc__Specification5_spec__3_#t~ret55, __utac_acc__Specification5_spec__3_#t~ret56, __utac_acc__Specification5_spec__3_~tmp~4, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~4;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 1912#L273 __utac_acc__Specification5_spec__3_#t~ret55 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~4 := __utac_acc__Specification5_spec__3_#t~ret55;havoc __utac_acc__Specification5_spec__3_#t~ret55; 1911#L695 assume 2 != __utac_acc__Specification5_spec__3_~tmp~4;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~11;havoc isPumpRunning_~retValue_acc~11;isPumpRunning_~retValue_acc~11 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~11; 1910#L923-1 __utac_acc__Specification5_spec__3_#t~ret56 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret56;havoc __utac_acc__Specification5_spec__3_#t~ret56; 1909#L699 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 1798#L695-1 [2020-12-01 15:08:48,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:08:48,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2020-12-01 15:08:48,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:08:48,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47854233] [2020-12-01 15:08:48,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:08:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:08:48,247 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:08:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:08:48,288 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:08:48,301 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:08:48,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:08:48,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1883808158, now seen corresponding path program 1 times [2020-12-01 15:08:48,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:08:48,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531306373] [2020-12-01 15:08:48,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:08:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:08:48,318 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:08:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:08:48,323 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:08:48,329 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:08:48,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:08:48,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1820381976, now seen corresponding path program 1 times [2020-12-01 15:08:48,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:08:48,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142119649] [2020-12-01 15:08:48,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:08:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:08:48,385 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:08:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:08:48,424 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:08:48,446 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:08:48,582 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-12-01 15:10:05,213 WARN L197 SmtUtils]: Spent 1.28 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2020-12-01 15:10:57,251 WARN L197 SmtUtils]: Spent 51.98 s on a formula simplification that was a NOOP. DAG size: 435 [2020-12-01 15:10:57,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.12 03:10:57 BoogieIcfgContainer [2020-12-01 15:10:57,397 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-12-01 15:10:57,398 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:10:57,402 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:10:57,402 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:10:57,403 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:08:45" (3/4) ... [2020-12-01 15:10:57,405 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-12-01 15:10:57,477 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dc878f74-e49f-4c5d-bdc5-4c2cf777e6b4/bin/uautomizer/witness.graphml [2020-12-01 15:10:57,481 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:10:57,482 INFO L168 Benchmark]: Toolchain (without parser) took 133343.85 ms. Allocated memory was 107.0 MB in the beginning and 169.9 MB in the end (delta: 62.9 MB). Free memory was 79.1 MB in the beginning and 62.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 79.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:10:57,483 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 107.0 MB. Free memory is still 66.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:10:57,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 597.46 ms. Allocated memory is still 107.0 MB. Free memory was 79.0 MB in the beginning and 70.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:10:57,484 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.00 ms. Allocated memory is still 107.0 MB. Free memory was 70.8 MB in the beginning and 66.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:10:57,484 INFO L168 Benchmark]: Boogie Preprocessor took 63.09 ms. Allocated memory is still 107.0 MB. Free memory was 66.7 MB in the beginning and 63.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:10:57,485 INFO L168 Benchmark]: RCFGBuilder took 1095.17 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 63.9 MB in the beginning and 89.8 MB in the end (delta: -25.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:10:57,486 INFO L168 Benchmark]: BuchiAutomizer took 131405.64 ms. Allocated memory was 130.0 MB in the beginning and 169.9 MB in the end (delta: 39.8 MB). Free memory was 89.8 MB in the beginning and 65.1 MB in the end (delta: 24.7 MB). Peak memory consumption was 92.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:10:57,488 INFO L168 Benchmark]: Witness Printer took 83.09 ms. Allocated memory is still 169.9 MB. Free memory was 64.1 MB in the beginning and 62.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:10:57,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 107.0 MB. Free memory is still 66.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 597.46 ms. Allocated memory is still 107.0 MB. Free memory was 79.0 MB in the beginning and 70.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.00 ms. Allocated memory is still 107.0 MB. Free memory was 70.8 MB in the beginning and 66.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.09 ms. Allocated memory is still 107.0 MB. Free memory was 66.7 MB in the beginning and 63.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1095.17 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 63.9 MB in the beginning and 89.8 MB in the end (delta: -25.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 131405.64 ms. Allocated memory was 130.0 MB in the beginning and 169.9 MB in the end (delta: 39.8 MB). Free memory was 89.8 MB in the beginning and 65.1 MB in the end (delta: 24.7 MB). Peak memory consumption was 92.3 MB. Max. memory is 16.1 GB. * Witness Printer took 83.09 ms. Allocated memory is still 169.9 MB. Free memory was 64.1 MB in the beginning and 62.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 356 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 131.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 130.4s. 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 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 452 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 356 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 681 SDtfs, 1648 SDslu, 998 SDs, 0 SdLazy, 193 SolverSat, 54 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: 727]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1648} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d735da0=0, NULL=1662, NULL=0, NULL=1648, NULL=1659, NULL=0, NULL=0, methaneLevelCritical=0, NULL=1676, tmp=0, NULL=0, NULL=1673, tmp___1=0, NULL=0, NULL=1651, cleanupTimeShifts=4, retValue_acc=0, NULL=1656, NULL=1674, waterLevel=1, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5b9507ac=0, \result=1, head=0, pumpRunning=0, tmp=1, retValue_acc=1, NULL=1669, NULL=0, \result=1, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=0, retValue_acc=1, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4aaa6e5c=0, tmp=1, NULL=1668, head=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26519f3b=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12deda9f=0, NULL=0, retValue_acc=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53cd9055=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27bb7e45=0, NULL=1658, NULL=1671, NULL=1672, tmp___0=0, NULL=0, NULL=1666, NULL=1657, tmp=1, NULL=0, NULL=0, switchedOnBeforeTS=0, NULL=1654, tmp=0, \result=0, NULL=0, systemActive=1, \result=1, NULL=0, NULL=1652, \result=0, NULL=0, NULL=1660, NULL=0, NULL=1675, tmp___0=0, NULL=1655, NULL=1665, \result=0, NULL=1667, NULL=0, NULL=0, NULL=0, NULL=1661, NULL=1649, retValue_acc=1, tmp___2=59, splverifierCounter=0, NULL=0, NULL=1664, NULL=1677, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@38e053a5=59, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6be80d07=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43da6c1b=0, NULL=1653, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2bc4a422=0, NULL=1650, NULL=0, NULL=1663} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L89] int cleanupTimeShifts = 4; [L198] int waterLevel = 1; [L199] int methaneLevelCritical = 0; [L470] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L668] int switchedOnBeforeTS ; [L784] int pumpRunning = 0; [L785] int systemActive = 1; [L169] int retValue_acc ; [L170] int tmp ; [L80] int retValue_acc ; [L83] retValue_acc = 1 [L84] return (retValue_acc); [L176] tmp = valid_product() [L178] COND TRUE \read(tmp) [L673] switchedOnBeforeTS = 0 [L718] int splverifierCounter ; [L719] int tmp ; [L720] int tmp___0 ; [L721] int tmp___1 ; [L722] int tmp___2 ; [L725] splverifierCounter = 0 Loop: [L727] COND TRUE 1 [L729] COND TRUE splverifierCounter < 4 [L735] tmp = __VERIFIER_nondet_int() [L737] COND FALSE !(\read(tmp)) [L745] tmp___0 = __VERIFIER_nondet_int() [L747] COND FALSE !(\read(tmp___0)) [L755] tmp___2 = __VERIFIER_nondet_int() [L757] COND TRUE \read(tmp___2) [L919] int retValue_acc ; [L922] retValue_acc = pumpRunning [L923] return (retValue_acc); [L682] switchedOnBeforeTS = isPumpRunning() [L794] COND FALSE !(\read(pumpRunning)) [L801] COND TRUE \read(systemActive) [L849] int tmp ; [L852] COND FALSE !(\read(pumpRunning)) [L823] int tmp ; [L826] COND TRUE ! pumpRunning [L964] int retValue_acc ; [L965] int tmp ; [L966] int tmp___0 ; [L278] int retValue_acc ; [L281] COND TRUE waterLevel < 2 [L282] retValue_acc = 1 [L283] return (retValue_acc); [L970] tmp = isHighWaterSensorDry() [L972] COND TRUE \read(tmp) [L973] tmp___0 = 0 [L977] retValue_acc = tmp___0 [L978] return (retValue_acc); [L828] tmp = isHighWaterLevel() [L830] COND FALSE !(\read(tmp)) [L688] int tmp ; [L689] int tmp___0 ; [L269] int retValue_acc ; [L272] retValue_acc = waterLevel [L273] return (retValue_acc); [L693] tmp = getWaterLevel() [L695] COND TRUE tmp != 2 [L919] int retValue_acc ; [L922] retValue_acc = pumpRunning [L923] return (retValue_acc); [L697] tmp___0 = isPumpRunning() [L699] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...