./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9eb9a37a-d659-43a8-b233-33f5b75c2fe7/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9eb9a37a-d659-43a8-b233-33f5b75c2fe7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9eb9a37a-d659-43a8-b233-33f5b75c2fe7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9eb9a37a-d659-43a8-b233-33f5b75c2fe7/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product34.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9eb9a37a-d659-43a8-b233-33f5b75c2fe7/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9eb9a37a-d659-43a8-b233-33f5b75c2fe7/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 b803903b6771bf10a60266d9698f7c6b6489f5c7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:57:39,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:57:39,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:57:39,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:57:39,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:57:39,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:57:39,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:57:39,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:57:39,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:57:39,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:57:39,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:57:39,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:57:39,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:57:39,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:57:39,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:57:39,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:57:39,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:57:39,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:57:39,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:57:39,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:57:39,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:57:39,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:57:39,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:57:39,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:57:40,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:57:40,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:57:40,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:57:40,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:57:40,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:57:40,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:57:40,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:57:40,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:57:40,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:57:40,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:57:40,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:57:40,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:57:40,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:57:40,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:57:40,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:57:40,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:57:40,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:57:40,021 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9eb9a37a-d659-43a8-b233-33f5b75c2fe7/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 20:57:40,059 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:57:40,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:57:40,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:57:40,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:57:40,062 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:57:40,062 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 20:57:40,062 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 20:57:40,062 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 20:57:40,063 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 20:57:40,063 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 20:57:40,064 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 20:57:40,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:57:40,064 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:57:40,064 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:57:40,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:57:40,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:57:40,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:57:40,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 20:57:40,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 20:57:40,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 20:57:40,066 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:57:40,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:57:40,066 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 20:57:40,066 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:57:40,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 20:57:40,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:57:40,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:57:40,067 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 20:57:40,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:57:40,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:57:40,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:57:40,069 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 20:57:40,070 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 20:57:40,071 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_9eb9a37a-d659-43a8-b233-33f5b75c2fe7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9eb9a37a-d659-43a8-b233-33f5b75c2fe7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b803903b6771bf10a60266d9698f7c6b6489f5c7 [2020-11-29 20:57:40,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:57:40,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:57:40,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:57:40,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:57:40,401 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:57:40,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9eb9a37a-d659-43a8-b233-33f5b75c2fe7/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product34.cil.c [2020-11-29 20:57:40,475 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9eb9a37a-d659-43a8-b233-33f5b75c2fe7/bin/uautomizer/data/b2844b888/2e554019175b4d9386469aa912af91c5/FLAGe30fc0bf3 [2020-11-29 20:57:41,121 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:57:41,122 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9eb9a37a-d659-43a8-b233-33f5b75c2fe7/sv-benchmarks/c/product-lines/minepump_spec3_product34.cil.c [2020-11-29 20:57:41,143 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9eb9a37a-d659-43a8-b233-33f5b75c2fe7/bin/uautomizer/data/b2844b888/2e554019175b4d9386469aa912af91c5/FLAGe30fc0bf3 [2020-11-29 20:57:41,391 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9eb9a37a-d659-43a8-b233-33f5b75c2fe7/bin/uautomizer/data/b2844b888/2e554019175b4d9386469aa912af91c5 [2020-11-29 20:57:41,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:57:41,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:57:41,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:57:41,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:57:41,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:57:41,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:57:41" (1/1) ... [2020-11-29 20:57:41,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18cd7e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:41, skipping insertion in model container [2020-11-29 20:57:41,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:57:41" (1/1) ... [2020-11-29 20:57:41,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:57:41,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:57:41,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:57:41,888 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:57:41,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:57:42,028 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:57:42,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:42 WrapperNode [2020-11-29 20:57:42,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:57:42,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:57:42,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:57:42,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:57:42,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:42" (1/1) ... [2020-11-29 20:57:42,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:42" (1/1) ... [2020-11-29 20:57:42,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:57:42,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:57:42,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:57:42,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:57:42,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:42" (1/1) ... [2020-11-29 20:57:42,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:42" (1/1) ... [2020-11-29 20:57:42,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:42" (1/1) ... [2020-11-29 20:57:42,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:42" (1/1) ... [2020-11-29 20:57:42,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:42" (1/1) ... [2020-11-29 20:57:42,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:42" (1/1) ... [2020-11-29 20:57:42,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:42" (1/1) ... [2020-11-29 20:57:42,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:57:42,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:57:42,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:57:42,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:57:42,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eb9a37a-d659-43a8-b233-33f5b75c2fe7/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:57:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:57:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:57:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:57:42,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:57:43,212 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:57:43,212 INFO L298 CfgBuilder]: Removed 110 assume(true) statements. [2020-11-29 20:57:43,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:57:43 BoogieIcfgContainer [2020-11-29 20:57:43,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:57:43,215 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 20:57:43,215 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 20:57:43,218 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 20:57:43,219 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:57:43,219 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 08:57:41" (1/3) ... [2020-11-29 20:57:43,221 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2698f39c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:57:43, skipping insertion in model container [2020-11-29 20:57:43,221 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:57:43,221 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:42" (2/3) ... [2020-11-29 20:57:43,221 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2698f39c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:57:43, skipping insertion in model container [2020-11-29 20:57:43,222 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:57:43,222 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:57:43" (3/3) ... [2020-11-29 20:57:43,223 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product34.cil.c [2020-11-29 20:57:43,276 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 20:57:43,276 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 20:57:43,277 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 20:57:43,277 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:57:43,277 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:57:43,277 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 20:57:43,277 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:57:43,278 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 20:57:43,293 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 84 states. [2020-11-29 20:57:43,347 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2020-11-29 20:57:43,364 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:57:43,364 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:57:43,372 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:57:43,372 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:57:43,372 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 20:57:43,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 84 states. [2020-11-29 20:57:43,379 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2020-11-29 20:57:43,383 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:57:43,384 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:57:43,385 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:57:43,385 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:57:43,390 INFO L794 eck$LassoCheckResult]: Stem: 32#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~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);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(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);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(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #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(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 9#L-1true havoc main_#res;havoc main_#t~ret11, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 69#L909true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 8#L917true main_#t~ret11 := valid_product_#res;main_~tmp~1 := main_#t~ret11;havoc main_#t~ret11; 74#L200true assume 0 != main_~tmp~1; 85#L174true havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 37#L765-1true [2020-11-29 20:57:43,398 INFO L796 eck$LassoCheckResult]: Loop: 37#L765-1true assume !false; 3#L58true assume test_~splverifierCounter~0 < 4; 25#L59true test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 63#L67true assume !(0 != test_~tmp~0); 62#L67-1true test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 38#L77true assume !(0 != test_~tmp___0~0); 36#L77-1true test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 12#L87true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 6#L95-2true assume !(0 != ~pumpRunning~0); 67#L229true assume !(0 != ~systemActive~0); 82#L236true havoc __utac_acc__Specification3_spec__1_#t~ret66, __utac_acc__Specification3_spec__1_#t~ret67, __utac_acc__Specification3_spec__1_#t~ret68, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 66#L836true __utac_acc__Specification3_spec__1_#t~ret66 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret66;havoc __utac_acc__Specification3_spec__1_#t~ret66; 71#L759true assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 37#L765-1true [2020-11-29 20:57:43,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:57:43,404 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-29 20:57:43,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:57:43,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368221038] [2020-11-29 20:57:43,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:57:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:43,711 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:43,850 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:43,906 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:57:43,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:57:43,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1680575562, now seen corresponding path program 1 times [2020-11-29 20:57:43,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:57:43,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573526652] [2020-11-29 20:57:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:57:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:57:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:57:43,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573526652] [2020-11-29 20:57:43,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:57:43,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:57:43,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776114896] [2020-11-29 20:57:43,983 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 20:57:43,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:57:43,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:57:43,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:57:44,000 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2020-11-29 20:57:44,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:57:44,050 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions. [2020-11-29 20:57:44,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:57:44,053 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 113 transitions. [2020-11-29 20:57:44,057 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2020-11-29 20:57:44,062 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 74 states and 105 transitions. [2020-11-29 20:57:44,063 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2020-11-29 20:57:44,064 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2020-11-29 20:57:44,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 105 transitions. [2020-11-29 20:57:44,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:57:44,065 INFO L691 BuchiCegarLoop]: Abstraction has 74 states and 105 transitions. [2020-11-29 20:57:44,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states and 105 transitions. [2020-11-29 20:57:44,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-29 20:57:44,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-29 20:57:44,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2020-11-29 20:57:44,105 INFO L714 BuchiCegarLoop]: Abstraction has 74 states and 105 transitions. [2020-11-29 20:57:44,105 INFO L594 BuchiCegarLoop]: Abstraction has 74 states and 105 transitions. [2020-11-29 20:57:44,105 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 20:57:44,106 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 105 transitions. [2020-11-29 20:57:44,117 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2020-11-29 20:57:44,118 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:57:44,118 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:57:44,118 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:57:44,118 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:57:44,118 INFO L794 eck$LassoCheckResult]: Stem: 215#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~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);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(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);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(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #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(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 188#L-1 havoc main_#res;havoc main_#t~ret11, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 189#L909 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 186#L917 main_#t~ret11 := valid_product_#res;main_~tmp~1 := main_#t~ret11;havoc main_#t~ret11; 187#L200 assume 0 != main_~tmp~1; 246#L174 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 218#L765-1 [2020-11-29 20:57:44,119 INFO L796 eck$LassoCheckResult]: Loop: 218#L765-1 assume !false; 176#L58 assume test_~splverifierCounter~0 < 4; 177#L59 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 211#L67 assume !(0 != test_~tmp~0); 185#L67-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 219#L77 assume !(0 != test_~tmp___0~0); 213#L77-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 190#L87 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 181#L95-2 assume !(0 != ~pumpRunning~0); 182#L229 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 225#L261 assume !(0 == ~pumpRunning~0); 226#L236 havoc __utac_acc__Specification3_spec__1_#t~ret66, __utac_acc__Specification3_spec__1_#t~ret67, __utac_acc__Specification3_spec__1_#t~ret68, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 241#L836 __utac_acc__Specification3_spec__1_#t~ret66 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret66;havoc __utac_acc__Specification3_spec__1_#t~ret66; 242#L759 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 218#L765-1 [2020-11-29 20:57:44,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:57:44,119 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-29 20:57:44,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:57:44,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549782220] [2020-11-29 20:57:44,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:57:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:44,176 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:44,225 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:44,244 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:57:44,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:57:44,245 INFO L82 PathProgramCache]: Analyzing trace with hash -589845010, now seen corresponding path program 1 times [2020-11-29 20:57:44,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:57:44,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104413705] [2020-11-29 20:57:44,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:57:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:57:44,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:57:44,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104413705] [2020-11-29 20:57:44,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:57:44,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:57:44,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540782626] [2020-11-29 20:57:44,269 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 20:57:44,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:57:44,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:57:44,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:57:44,270 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. cyclomatic complexity: 33 Second operand 3 states. [2020-11-29 20:57:44,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:57:44,378 INFO L93 Difference]: Finished difference Result 121 states and 165 transitions. [2020-11-29 20:57:44,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:57:44,379 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 121 states and 165 transitions. [2020-11-29 20:57:44,382 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2020-11-29 20:57:44,383 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 121 states to 121 states and 165 transitions. [2020-11-29 20:57:44,384 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 121 [2020-11-29 20:57:44,384 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 121 [2020-11-29 20:57:44,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 165 transitions. [2020-11-29 20:57:44,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:57:44,385 INFO L691 BuchiCegarLoop]: Abstraction has 121 states and 165 transitions. [2020-11-29 20:57:44,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 165 transitions. [2020-11-29 20:57:44,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-11-29 20:57:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-11-29 20:57:44,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 165 transitions. [2020-11-29 20:57:44,396 INFO L714 BuchiCegarLoop]: Abstraction has 121 states and 165 transitions. [2020-11-29 20:57:44,396 INFO L594 BuchiCegarLoop]: Abstraction has 121 states and 165 transitions. [2020-11-29 20:57:44,396 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 20:57:44,397 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 121 states and 165 transitions. [2020-11-29 20:57:44,398 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2020-11-29 20:57:44,399 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:57:44,399 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:57:44,400 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:57:44,403 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:57:44,403 INFO L794 eck$LassoCheckResult]: Stem: 415#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~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);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(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);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(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #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(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 388#L-1 havoc main_#res;havoc main_#t~ret11, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 389#L909 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 386#L917 main_#t~ret11 := valid_product_#res;main_~tmp~1 := main_#t~ret11;havoc main_#t~ret11; 387#L200 assume 0 != main_~tmp~1; 454#L174 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 462#L765-1 [2020-11-29 20:57:44,404 INFO L796 eck$LassoCheckResult]: Loop: 462#L765-1 assume !false; 485#L58 assume test_~splverifierCounter~0 < 4; 484#L59 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 476#L67 assume !(0 != test_~tmp~0); 472#L67-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 470#L77 assume !(0 != test_~tmp___0~0); 467#L77-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 390#L87 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 382#L95-2 assume !(0 != ~pumpRunning~0); 383#L229 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 427#L261 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret30, isHighWaterLevel_~retValue_acc~3, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~3;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 428#L876 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 392#L881 isHighWaterLevel_#t~ret30 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret30;havoc isHighWaterLevel_#t~ret30; 393#L363 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~1 := 0; 414#L363-2 isHighWaterLevel_~retValue_acc~3 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~3; 394#L369 processEnvironment_#t~ret12 := isHighWaterLevel_#res;processEnvironment_~tmp~2 := processEnvironment_#t~ret12;havoc processEnvironment_#t~ret12; 395#L265 assume !(0 != processEnvironment_~tmp~2); 438#L236 havoc __utac_acc__Specification3_spec__1_#t~ret66, __utac_acc__Specification3_spec__1_#t~ret67, __utac_acc__Specification3_spec__1_#t~ret68, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 492#L836 __utac_acc__Specification3_spec__1_#t~ret66 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret66;havoc __utac_acc__Specification3_spec__1_#t~ret66; 490#L759 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 462#L765-1 [2020-11-29 20:57:44,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:57:44,405 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-29 20:57:44,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:57:44,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604789030] [2020-11-29 20:57:44,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:57:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:44,478 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:44,566 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:44,579 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:57:44,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:57:44,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1033973030, now seen corresponding path program 1 times [2020-11-29 20:57:44,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:57:44,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263616161] [2020-11-29 20:57:44,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:57:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:44,590 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:44,593 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:44,599 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:57:44,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:57:44,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1019261056, now seen corresponding path program 1 times [2020-11-29 20:57:44,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:57:44,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535628440] [2020-11-29 20:57:44,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:57:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:57:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:57:44,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535628440] [2020-11-29 20:57:44,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:57:44,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:57:44,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146004417] [2020-11-29 20:57:44,940 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-11-29 20:57:45,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:57:45,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:57:45,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:57:45,048 INFO L87 Difference]: Start difference. First operand 121 states and 165 transitions. cyclomatic complexity: 46 Second operand 5 states. [2020-11-29 20:57:45,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:57:45,200 INFO L93 Difference]: Finished difference Result 398 states and 547 transitions. [2020-11-29 20:57:45,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:57:45,201 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 398 states and 547 transitions. [2020-11-29 20:57:45,205 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 291 [2020-11-29 20:57:45,210 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 398 states to 398 states and 547 transitions. [2020-11-29 20:57:45,210 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 398 [2020-11-29 20:57:45,211 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 398 [2020-11-29 20:57:45,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 398 states and 547 transitions. [2020-11-29 20:57:45,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:57:45,214 INFO L691 BuchiCegarLoop]: Abstraction has 398 states and 547 transitions. [2020-11-29 20:57:45,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states and 547 transitions. [2020-11-29 20:57:45,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 236. [2020-11-29 20:57:45,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-11-29 20:57:45,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 316 transitions. [2020-11-29 20:57:45,238 INFO L714 BuchiCegarLoop]: Abstraction has 236 states and 316 transitions. [2020-11-29 20:57:45,238 INFO L594 BuchiCegarLoop]: Abstraction has 236 states and 316 transitions. [2020-11-29 20:57:45,238 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 20:57:45,238 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 236 states and 316 transitions. [2020-11-29 20:57:45,241 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 168 [2020-11-29 20:57:45,243 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:57:45,243 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:57:45,244 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:57:45,244 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:57:45,244 INFO L794 eck$LassoCheckResult]: Stem: 953#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~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);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(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);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(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #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(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 925#L-1 havoc main_#res;havoc main_#t~ret11, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 926#L909 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 923#L917 main_#t~ret11 := valid_product_#res;main_~tmp~1 := main_#t~ret11;havoc main_#t~ret11; 924#L200 assume 0 != main_~tmp~1; 994#L174 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 956#L765-1 [2020-11-29 20:57:45,244 INFO L796 eck$LassoCheckResult]: Loop: 956#L765-1 assume !false; 912#L58 assume test_~splverifierCounter~0 < 4; 913#L59 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 946#L67 assume !(0 != test_~tmp~0); 922#L67-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 959#L77 assume !(0 != test_~tmp___0~0); 958#L77-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 927#L87 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 919#L95-2 assume !(0 != ~pumpRunning~0); 920#L229 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 966#L261 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret30, isHighWaterLevel_~retValue_acc~3, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~3;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 967#L876 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 929#L881 isHighWaterLevel_#t~ret30 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret30;havoc isHighWaterLevel_#t~ret30; 930#L363 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~1 := 0; 951#L363-2 isHighWaterLevel_~retValue_acc~3 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~3; 952#L369 processEnvironment_#t~ret12 := isHighWaterLevel_#res;processEnvironment_~tmp~2 := processEnvironment_#t~ret12;havoc processEnvironment_#t~ret12; 1106#L265 assume !(0 != processEnvironment_~tmp~2); 1107#L236 havoc __utac_acc__Specification3_spec__1_#t~ret66, __utac_acc__Specification3_spec__1_#t~ret67, __utac_acc__Specification3_spec__1_#t~ret68, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 988#L836 __utac_acc__Specification3_spec__1_#t~ret66 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret66;havoc __utac_acc__Specification3_spec__1_#t~ret66; 989#L759 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~7);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 993#L868 __utac_acc__Specification3_spec__1_#t~ret67 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret67;havoc __utac_acc__Specification3_spec__1_#t~ret67; 955#L765 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 956#L765-1 [2020-11-29 20:57:45,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:57:45,246 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2020-11-29 20:57:45,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:57:45,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720441735] [2020-11-29 20:57:45,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:57:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:45,286 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:45,322 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:45,338 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:57:45,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:57:45,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1510630354, now seen corresponding path program 1 times [2020-11-29 20:57:45,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:57:45,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394294957] [2020-11-29 20:57:45,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:57:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:45,350 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:45,358 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:45,363 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:57:45,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:57:45,364 INFO L82 PathProgramCache]: Analyzing trace with hash -257325228, now seen corresponding path program 1 times [2020-11-29 20:57:45,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:57:45,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547386875] [2020-11-29 20:57:45,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:57:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:45,405 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:45,466 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:45,488 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:57:45,683 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-11-29 20:58:52,506 WARN L193 SmtUtils]: Spent 1.11 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-29 20:59:36,614 WARN L193 SmtUtils]: Spent 44.10 s on a formula simplification that was a NOOP. DAG size: 433 [2020-11-29 20:59:36,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 08:59:36 BoogieIcfgContainer [2020-11-29 20:59:36,861 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 20:59:36,861 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:59:36,862 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:59:36,862 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:59:36,863 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:57:43" (3/4) ... [2020-11-29 20:59:36,866 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 20:59:36,937 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9eb9a37a-d659-43a8-b233-33f5b75c2fe7/bin/uautomizer/witness.graphml [2020-11-29 20:59:36,938 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:59:36,939 INFO L168 Benchmark]: Toolchain (without parser) took 115542.10 ms. Allocated memory was 134.2 MB in the beginning and 199.2 MB in the end (delta: 65.0 MB). Free memory was 100.9 MB in the beginning and 150.9 MB in the end (delta: -50.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:59:36,940 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 79.7 MB. Free memory was 37.3 MB in the beginning and 37.3 MB in the end (delta: 36.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:59:36,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.81 ms. Allocated memory is still 134.2 MB. Free memory was 100.6 MB in the beginning and 99.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:59:36,941 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.17 ms. Allocated memory is still 134.2 MB. Free memory was 99.1 MB in the beginning and 95.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:59:36,941 INFO L168 Benchmark]: Boogie Preprocessor took 64.11 ms. Allocated memory is still 134.2 MB. Free memory was 95.8 MB in the beginning and 93.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:59:36,941 INFO L168 Benchmark]: RCFGBuilder took 1023.37 ms. Allocated memory is still 134.2 MB. Free memory was 93.7 MB in the beginning and 41.3 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:59:36,942 INFO L168 Benchmark]: BuchiAutomizer took 113645.84 ms. Allocated memory was 134.2 MB in the beginning and 199.2 MB in the end (delta: 65.0 MB). Free memory was 41.3 MB in the beginning and 154.1 MB in the end (delta: -112.8 MB). Peak memory consumption was 61.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:59:36,943 INFO L168 Benchmark]: Witness Printer took 76.45 ms. Allocated memory is still 199.2 MB. Free memory was 154.1 MB in the beginning and 150.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:59:36,950 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 79.7 MB. Free memory was 37.3 MB in the beginning and 37.3 MB in the end (delta: 36.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 624.81 ms. Allocated memory is still 134.2 MB. Free memory was 100.6 MB in the beginning and 99.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.17 ms. Allocated memory is still 134.2 MB. Free memory was 99.1 MB in the beginning and 95.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.11 ms. Allocated memory is still 134.2 MB. Free memory was 95.8 MB in the beginning and 93.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1023.37 ms. Allocated memory is still 134.2 MB. Free memory was 93.7 MB in the beginning and 41.3 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 113645.84 ms. Allocated memory was 134.2 MB in the beginning and 199.2 MB in the end (delta: 65.0 MB). Free memory was 41.3 MB in the beginning and 154.1 MB in the end (delta: -112.8 MB). Peak memory consumption was 61.4 MB. Max. memory is 16.1 GB. * Witness Printer took 76.45 ms. Allocated memory is still 199.2 MB. Free memory was 154.1 MB in the beginning and 150.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 236 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 113.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 112.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 162 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 236 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 384 SDtfs, 584 SDslu, 497 SDs, 0 SdLazy, 67 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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: 57]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7e09b90=74, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c765e6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@47481b3f=0, NULL=1, NULL=0, methaneLevelCritical=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f6e1dc8=0, retValue_acc=0, tmp___1=0, NULL=7811, NULL=7817, NULL=0, cleanupTimeShifts=4, tmp=0, NULL=7822, tmp=0, NULL=0, NULL=0, waterLevel=1, NULL=7805, NULL=0, tmp___0=0, NULL=7812, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=7824, tmp=1, NULL=0, \result=1, NULL=0, NULL=7815, NULL=0, tmp=1, retValue_acc=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7358e26a=0, NULL=7821, NULL=7806, tmp=0, head=0, NULL=7810, NULL=7804, NULL=7809, NULL=0, retValue_acc=0, NULL=0, NULL=7818, NULL=7820, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@33a2dedc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a637cd5=0, tmp___0=0, NULL=7816, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1d193c9d=0, NULL=7807, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@71fb4e34=0, NULL=7808, NULL=7803, tmp___0=1, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@587a24bf=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=7799, NULL=7813, \result=0, NULL=7802, NULL=7826, NULL=0, NULL=0, NULL=0, NULL=0, NULL=7800, tmp___2=74, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=7801, NULL=7823, tmp___1=0, NULL=7819, NULL=7825, NULL=7814} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L114] int cleanupTimeShifts = 4; [L221] int pumpRunning = 0; [L222] int systemActive = 1; [L551] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L793] int waterLevel = 1; [L794] int methaneLevelCritical = 0; [L191] int retValue_acc ; [L192] int tmp ; [L913] int retValue_acc ; [L916] retValue_acc = 1 [L917] return (retValue_acc); [L198] tmp = valid_product() [L200] COND TRUE \read(tmp) [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 Loop: [L57] COND TRUE 1 [L59] COND TRUE splverifierCounter < 4 [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) [L377] systemActive = 1 [L229] COND FALSE !(\read(pumpRunning)) [L236] COND TRUE \read(systemActive) [L258] int tmp ; [L261] COND TRUE ! pumpRunning [L355] int retValue_acc ; [L356] int tmp ; [L357] int tmp___0 ; [L873] int retValue_acc ; [L876] COND TRUE waterLevel < 2 [L877] retValue_acc = 1 [L878] return (retValue_acc); [L361] tmp = isHighWaterSensorDry() [L363] COND TRUE \read(tmp) [L364] tmp___0 = 0 [L368] retValue_acc = tmp___0 [L369] return (retValue_acc); [L263] tmp = isHighWaterLevel() [L265] COND FALSE !(\read(tmp)) [L751] int tmp ; [L752] int tmp___0 ; [L753] int tmp___1 ; [L832] int retValue_acc ; [L835] retValue_acc = methaneLevelCritical [L836] return (retValue_acc); [L757] tmp = isMethaneLevelCritical() [L759] COND FALSE !(\read(tmp)) [L864] int retValue_acc ; [L867] retValue_acc = waterLevel [L868] return (retValue_acc); [L763] tmp___0 = getWaterLevel() [L765] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...