./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product63.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_d59c0f3b-fad0-4e16-9d21-549f662a6a7e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d59c0f3b-fad0-4e16-9d21-549f662a6a7e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d59c0f3b-fad0-4e16-9d21-549f662a6a7e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d59c0f3b-fad0-4e16-9d21-549f662a6a7e/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d59c0f3b-fad0-4e16-9d21-549f662a6a7e/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d59c0f3b-fad0-4e16-9d21-549f662a6a7e/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 7819fbe7d63fc779c0cf34c98e41b55fde6ca155 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 20:30:06,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:30:06,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:30:06,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:30:06,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:30:06,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:30:06,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:30:06,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:30:06,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:30:06,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:30:06,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:30:06,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:30:06,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:30:06,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:30:06,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:30:06,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:30:06,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:30:06,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:30:06,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:30:06,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:30:06,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:30:06,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:30:06,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:30:06,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:30:06,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:30:06,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:30:06,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:30:06,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:30:06,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:30:06,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:30:06,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:30:06,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:30:06,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:30:06,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:30:06,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:30:06,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:30:06,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:30:06,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:30:06,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:30:06,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:30:06,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:30:06,299 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d59c0f3b-fad0-4e16-9d21-549f662a6a7e/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 20:30:06,366 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:30:06,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:30:06,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:30:06,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:30:06,370 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:30:06,371 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 20:30:06,371 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 20:30:06,371 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 20:30:06,372 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 20:30:06,372 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 20:30:06,374 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 20:30:06,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:30:06,374 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:30:06,375 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:30:06,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:30:06,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:30:06,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:30:06,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 20:30:06,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 20:30:06,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 20:30:06,377 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:30:06,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:30:06,378 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 20:30:06,378 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:30:06,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 20:30:06,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:30:06,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:30:06,380 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 20:30:06,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:30:06,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:30:06,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:30:06,383 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 20:30:06,385 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 20:30:06,385 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_d59c0f3b-fad0-4e16-9d21-549f662a6a7e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d59c0f3b-fad0-4e16-9d21-549f662a6a7e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7819fbe7d63fc779c0cf34c98e41b55fde6ca155 [2020-11-29 20:30:06,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:30:06,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:30:06,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:30:06,787 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:30:06,788 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:30:06,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d59c0f3b-fad0-4e16-9d21-549f662a6a7e/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c [2020-11-29 20:30:06,880 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d59c0f3b-fad0-4e16-9d21-549f662a6a7e/bin/uautomizer/data/7ee683463/92bc45c7f5bc4e36beaeeb12022a258b/FLAG4ebba4a9f [2020-11-29 20:30:07,622 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:30:07,637 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d59c0f3b-fad0-4e16-9d21-549f662a6a7e/sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c [2020-11-29 20:30:07,667 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d59c0f3b-fad0-4e16-9d21-549f662a6a7e/bin/uautomizer/data/7ee683463/92bc45c7f5bc4e36beaeeb12022a258b/FLAG4ebba4a9f [2020-11-29 20:30:07,898 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d59c0f3b-fad0-4e16-9d21-549f662a6a7e/bin/uautomizer/data/7ee683463/92bc45c7f5bc4e36beaeeb12022a258b [2020-11-29 20:30:07,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:30:07,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:30:07,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:30:07,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:30:07,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:30:07,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:30:07" (1/1) ... [2020-11-29 20:30:07,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@520e98a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:30:07, skipping insertion in model container [2020-11-29 20:30:07,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:30:07" (1/1) ... [2020-11-29 20:30:07,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:30:08,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:30:08,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:30:08,510 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:30:08,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:30:08,703 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:30:08,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:30:08 WrapperNode [2020-11-29 20:30:08,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:30:08,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:30:08,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:30:08,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:30:08,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:30:08" (1/1) ... [2020-11-29 20:30:08,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:30:08" (1/1) ... [2020-11-29 20:30:08,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:30:08,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:30:08,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:30:08,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:30:08,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:30:08" (1/1) ... [2020-11-29 20:30:08,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:30:08" (1/1) ... [2020-11-29 20:30:08,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:30:08" (1/1) ... [2020-11-29 20:30:08,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:30:08" (1/1) ... [2020-11-29 20:30:08,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:30:08" (1/1) ... [2020-11-29 20:30:08,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:30:08" (1/1) ... [2020-11-29 20:30:08,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:30:08" (1/1) ... [2020-11-29 20:30:08,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:30:09,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:30:09,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:30:09,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:30:09,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:30:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d59c0f3b-fad0-4e16-9d21-549f662a6a7e/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 20:30:09,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:30:09,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:30:09,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:30:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:30:10,854 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:30:10,855 INFO L298 CfgBuilder]: Removed 364 assume(true) statements. [2020-11-29 20:30:10,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:30:10 BoogieIcfgContainer [2020-11-29 20:30:10,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:30:10,859 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 20:30:10,859 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 20:30:10,862 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 20:30:10,863 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:30:10,864 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 08:30:07" (1/3) ... [2020-11-29 20:30:10,865 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3fa2cf00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:30:10, skipping insertion in model container [2020-11-29 20:30:10,865 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:30:10,865 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:30:08" (2/3) ... [2020-11-29 20:30:10,866 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3fa2cf00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:30:10, skipping insertion in model container [2020-11-29 20:30:10,866 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:30:10,866 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:30:10" (3/3) ... [2020-11-29 20:30:10,868 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product63.cil.c [2020-11-29 20:30:10,922 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 20:30:10,922 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 20:30:10,922 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 20:30:10,922 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:30:10,922 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:30:10,923 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 20:30:10,923 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:30:10,923 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 20:30:10,952 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 233 states. [2020-11-29 20:30:10,999 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 153 [2020-11-29 20:30:10,999 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:30:11,000 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:30:11,014 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:30:11,014 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:30:11,014 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 20:30:11,014 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 233 states. [2020-11-29 20:30:11,048 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 153 [2020-11-29 20:30:11,049 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:30:11,049 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:30:11,050 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:30:11,050 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:30:11,056 INFO L794 eck$LassoCheckResult]: Stem: 48#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~string37.base, #t~string37.offset := #Ultimate.allocOnStack(13);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string39.base, #t~string39.offset, 1);call write~init~int(77, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(101, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(116, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(104, #t~string39.base, 4 + #t~string39.offset, 1);call write~init~int(58, #t~string39.base, 5 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 6 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string41.base, #t~string41.offset, 1);call write~init~int(82, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(73, #t~string41.base, 2 + #t~string41.offset, 1);call write~init~int(84, #t~string41.base, 3 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 4 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string43.base, #t~string43.offset, 1);call write~init~int(75, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 2 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string45.base, #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 1 + #t~string45.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 11#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 151#L168true havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 34#L176true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 59#L132true assume 0 != main_~tmp~0; 142#L105true havoc test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_#t~nondet35, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 190#L641-1true [2020-11-29 20:30:11,057 INFO L796 eck$LassoCheckResult]: Loop: 190#L641-1true assume !false; 27#L457true assume test_~splverifierCounter~0 < 4; 138#L458true test_~tmp~7 := test_#t~nondet32;havoc test_#t~nondet32; 22#L466true assume !(0 != test_~tmp~7); 23#L466-1true test_~tmp___0~2 := test_#t~nondet33;havoc test_#t~nondet33; 182#L476true assume !(0 != test_~tmp___0~2); 185#L476-1true test_~tmp___2~0 := test_#t~nondet34;havoc test_#t~nondet34; 104#L486true assume 0 != test_~tmp___2~0; 219#L492-1true assume !(0 != ~pumpRunning~0); 35#L198true assume !(0 != ~systemActive~0); 121#L205true havoc __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_#t~ret47, __utac_acc__Specification3_spec__1_#t~ret48, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 115#L557-5true __utac_acc__Specification3_spec__1_#t~ret46 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret46;havoc __utac_acc__Specification3_spec__1_#t~ret46; 232#L635true assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 190#L641-1true [2020-11-29 20:30:11,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:11,069 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-29 20:30:11,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:11,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134844441] [2020-11-29 20:30:11,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:30:11,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:30:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:30:11,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:30:11,745 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:30:11,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:11,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1666538050, now seen corresponding path program 1 times [2020-11-29 20:30:11,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:11,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096528098] [2020-11-29 20:30:11,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:30:11,766 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:30:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:30:11,788 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:30:11,795 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:30:11,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:11,801 INFO L82 PathProgramCache]: Analyzing trace with hash 47740888, now seen corresponding path program 1 times [2020-11-29 20:30:11,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:11,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270289709] [2020-11-29 20:30:11,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:30:12,044 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 20:30:12,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270289709] [2020-11-29 20:30:12,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:30:12,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:30:12,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328514206] [2020-11-29 20:30:12,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:30:12,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:30:12,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:30:12,190 INFO L87 Difference]: Start difference. First operand 233 states. Second operand 6 states. [2020-11-29 20:30:12,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:30:12,693 INFO L93 Difference]: Finished difference Result 510 states and 741 transitions. [2020-11-29 20:30:12,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:30:12,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 510 states and 741 transitions. [2020-11-29 20:30:12,713 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 333 [2020-11-29 20:30:12,739 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 510 states to 489 states and 720 transitions. [2020-11-29 20:30:12,741 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 489 [2020-11-29 20:30:12,746 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 489 [2020-11-29 20:30:12,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 489 states and 720 transitions. [2020-11-29 20:30:12,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:30:12,761 INFO L691 BuchiCegarLoop]: Abstraction has 489 states and 720 transitions. [2020-11-29 20:30:12,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states and 720 transitions. [2020-11-29 20:30:12,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 270. [2020-11-29 20:30:12,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-11-29 20:30:12,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 396 transitions. [2020-11-29 20:30:12,855 INFO L714 BuchiCegarLoop]: Abstraction has 270 states and 396 transitions. [2020-11-29 20:30:12,855 INFO L594 BuchiCegarLoop]: Abstraction has 270 states and 396 transitions. [2020-11-29 20:30:12,855 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 20:30:12,856 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 270 states and 396 transitions. [2020-11-29 20:30:12,862 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 184 [2020-11-29 20:30:12,863 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:30:12,863 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:30:12,866 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:30:12,866 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:30:12,866 INFO L794 eck$LassoCheckResult]: Stem: 834#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~string37.base, #t~string37.offset := #Ultimate.allocOnStack(13);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string39.base, #t~string39.offset, 1);call write~init~int(77, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(101, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(116, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(104, #t~string39.base, 4 + #t~string39.offset, 1);call write~init~int(58, #t~string39.base, 5 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 6 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string41.base, #t~string41.offset, 1);call write~init~int(82, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(73, #t~string41.base, 2 + #t~string41.offset, 1);call write~init~int(84, #t~string41.base, 3 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 4 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string43.base, #t~string43.offset, 1);call write~init~int(75, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 2 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string45.base, #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 1 + #t~string45.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 771#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 772#L168 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 809#L176 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 810#L132 assume 0 != main_~tmp~0; 850#L105 havoc test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_#t~nondet35, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 961#L641-1 [2020-11-29 20:30:12,868 INFO L796 eck$LassoCheckResult]: Loop: 961#L641-1 assume !false; 796#L457 assume test_~splverifierCounter~0 < 4; 797#L458 test_~tmp~7 := test_#t~nondet32;havoc test_#t~nondet32; 790#L466 assume !(0 != test_~tmp~7); 789#L466-1 test_~tmp___0~2 := test_#t~nondet33;havoc test_#t~nondet33; 791#L476 assume !(0 != test_~tmp___0~2); 770#L476-1 test_~tmp___2~0 := test_#t~nondet34;havoc test_#t~nondet34; 910#L486 assume 0 != test_~tmp___2~0; 911#L492-1 assume !(0 != ~pumpRunning~0); 811#L198 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret11, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 812#L282 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret10, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 916#L256-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret9, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 783#L230-3 assume !(0 == ~pumpRunning~0); 762#L205 havoc __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_#t~ret47, __utac_acc__Specification3_spec__1_#t~ret48, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 931#L557-5 __utac_acc__Specification3_spec__1_#t~ret46 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret46;havoc __utac_acc__Specification3_spec__1_#t~ret46; 932#L635 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 961#L641-1 [2020-11-29 20:30:12,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:12,871 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-29 20:30:12,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:12,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068630205] [2020-11-29 20:30:12,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:30:12,969 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:30:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:30:13,048 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:30:13,087 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:30:13,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:13,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1439331020, now seen corresponding path program 1 times [2020-11-29 20:30:13,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:13,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289799272] [2020-11-29 20:30:13,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:30:13,112 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 20:30:13,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289799272] [2020-11-29 20:30:13,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:30:13,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:30:13,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114704275] [2020-11-29 20:30:13,130 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 20:30:13,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:30:13,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:30:13,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:30:13,132 INFO L87 Difference]: Start difference. First operand 270 states and 396 transitions. cyclomatic complexity: 129 Second operand 3 states. [2020-11-29 20:30:13,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:30:13,498 INFO L93 Difference]: Finished difference Result 270 states and 373 transitions. [2020-11-29 20:30:13,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:30:13,500 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 270 states and 373 transitions. [2020-11-29 20:30:13,504 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 188 [2020-11-29 20:30:13,510 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 270 states to 270 states and 373 transitions. [2020-11-29 20:30:13,510 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 270 [2020-11-29 20:30:13,511 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 270 [2020-11-29 20:30:13,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 270 states and 373 transitions. [2020-11-29 20:30:13,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:30:13,512 INFO L691 BuchiCegarLoop]: Abstraction has 270 states and 373 transitions. [2020-11-29 20:30:13,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states and 373 transitions. [2020-11-29 20:30:13,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2020-11-29 20:30:13,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-11-29 20:30:13,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 373 transitions. [2020-11-29 20:30:13,527 INFO L714 BuchiCegarLoop]: Abstraction has 270 states and 373 transitions. [2020-11-29 20:30:13,527 INFO L594 BuchiCegarLoop]: Abstraction has 270 states and 373 transitions. [2020-11-29 20:30:13,527 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 20:30:13,527 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 270 states and 373 transitions. [2020-11-29 20:30:13,530 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 188 [2020-11-29 20:30:13,531 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:30:13,531 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:30:13,532 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:30:13,532 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 20:30:13,533 INFO L794 eck$LassoCheckResult]: Stem: 1456#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~string37.base, #t~string37.offset := #Ultimate.allocOnStack(13);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string39.base, #t~string39.offset, 1);call write~init~int(77, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(101, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(116, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(104, #t~string39.base, 4 + #t~string39.offset, 1);call write~init~int(58, #t~string39.base, 5 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 6 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string41.base, #t~string41.offset, 1);call write~init~int(82, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(73, #t~string41.base, 2 + #t~string41.offset, 1);call write~init~int(84, #t~string41.base, 3 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 4 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string43.base, #t~string43.offset, 1);call write~init~int(75, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 2 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string45.base, #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 1 + #t~string45.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 1328#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1329#L168 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 1413#L176 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1430#L132 assume 0 != main_~tmp~0; 1399#L105 havoc test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_#t~nondet35, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1400#L641-1 [2020-11-29 20:30:13,533 INFO L796 eck$LassoCheckResult]: Loop: 1400#L641-1 assume !false; 1419#L457 assume test_~splverifierCounter~0 < 4; 1420#L458 test_~tmp~7 := test_#t~nondet32;havoc test_#t~nondet32; 1552#L466 assume !(0 != test_~tmp~7); 1395#L466-1 test_~tmp___0~2 := test_#t~nondet33;havoc test_#t~nondet33; 1396#L476 assume !(0 != test_~tmp___0~2); 1549#L476-1 test_~tmp___2~0 := test_#t~nondet34;havoc test_#t~nondet34; 1547#L486 assume 0 != test_~tmp___2~0; 1546#L492-1 assume !(0 != ~pumpRunning~0); 1431#L198 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret11, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1345#L282 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret10, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 1346#L256-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret9, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 1343#L230-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret30, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 1344#L597-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 1460#L602-3 isHighWaterLevel_#t~ret30 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret30;havoc isHighWaterLevel_#t~ret30; 1483#L401-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~0 := 0; 1484#L401-11 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 1451#L407-3 processEnvironment__wrappee__highWaterSensor_#t~ret9 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret9;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9; 1412#L234-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 1312#L205 havoc __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_#t~ret47, __utac_acc__Specification3_spec__1_#t~ret48, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 1369#L557-5 __utac_acc__Specification3_spec__1_#t~ret46 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret46;havoc __utac_acc__Specification3_spec__1_#t~ret46; 1555#L635 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 1400#L641-1 [2020-11-29 20:30:13,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:13,534 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-29 20:30:13,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:13,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877254743] [2020-11-29 20:30:13,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:30:13,587 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:30:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:30:13,636 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:30:13,651 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:30:13,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:13,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1579572224, now seen corresponding path program 1 times [2020-11-29 20:30:13,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:13,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663006637] [2020-11-29 20:30:13,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:30:13,660 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:30:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:30:13,673 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:30:13,679 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:30:13,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:13,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1462089946, now seen corresponding path program 1 times [2020-11-29 20:30:13,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:13,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715670887] [2020-11-29 20:30:13,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:30:13,776 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 20:30:13,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715670887] [2020-11-29 20:30:13,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:30:13,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:30:13,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970680741] [2020-11-29 20:30:14,001 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-11-29 20:30:14,106 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-11-29 20:30:14,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:30:14,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:30:14,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:30:14,114 INFO L87 Difference]: Start difference. First operand 270 states and 373 transitions. cyclomatic complexity: 106 Second operand 5 states. [2020-11-29 20:30:14,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:30:14,564 INFO L93 Difference]: Finished difference Result 897 states and 1240 transitions. [2020-11-29 20:30:14,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:30:14,565 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 897 states and 1240 transitions. [2020-11-29 20:30:14,578 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 655 [2020-11-29 20:30:14,590 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 897 states to 897 states and 1240 transitions. [2020-11-29 20:30:14,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 897 [2020-11-29 20:30:14,591 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 897 [2020-11-29 20:30:14,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 897 states and 1240 transitions. [2020-11-29 20:30:14,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:30:14,594 INFO L691 BuchiCegarLoop]: Abstraction has 897 states and 1240 transitions. [2020-11-29 20:30:14,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states and 1240 transitions. [2020-11-29 20:30:14,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 534. [2020-11-29 20:30:14,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2020-11-29 20:30:14,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 728 transitions. [2020-11-29 20:30:14,627 INFO L714 BuchiCegarLoop]: Abstraction has 534 states and 728 transitions. [2020-11-29 20:30:14,627 INFO L594 BuchiCegarLoop]: Abstraction has 534 states and 728 transitions. [2020-11-29 20:30:14,627 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 20:30:14,627 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 534 states and 728 transitions. [2020-11-29 20:30:14,633 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 376 [2020-11-29 20:30:14,633 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:30:14,633 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:30:14,636 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:30:14,636 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:30:14,636 INFO L794 eck$LassoCheckResult]: Stem: 2645#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~string37.base, #t~string37.offset := #Ultimate.allocOnStack(13);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string39.base, #t~string39.offset, 1);call write~init~int(77, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(101, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(116, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(104, #t~string39.base, 4 + #t~string39.offset, 1);call write~init~int(58, #t~string39.base, 5 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 6 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string41.base, #t~string41.offset, 1);call write~init~int(82, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(73, #t~string41.base, 2 + #t~string41.offset, 1);call write~init~int(84, #t~string41.base, 3 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 4 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string43.base, #t~string43.offset, 1);call write~init~int(75, #t~string43.base, 1 + #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 2 + #t~string43.offset, 1);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string45.base, #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 1 + #t~string45.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 2513#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 2514#L168 havoc valid_product_#res;havoc valid_product_~retValue_acc~2;havoc valid_product_~retValue_acc~2;valid_product_~retValue_acc~2 := 1;valid_product_#res := valid_product_~retValue_acc~2; 2600#L176 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 2617#L132 assume 0 != main_~tmp~0; 2586#L105 havoc test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_#t~nondet35, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2587#L641-1 [2020-11-29 20:30:14,637 INFO L796 eck$LassoCheckResult]: Loop: 2587#L641-1 assume !false; 2825#L457 assume test_~splverifierCounter~0 < 4; 2826#L458 test_~tmp~7 := test_#t~nondet32;havoc test_#t~nondet32; 3012#L466 assume !(0 != test_~tmp~7); 3010#L466-1 test_~tmp___0~2 := test_#t~nondet33;havoc test_#t~nondet33; 3009#L476 assume !(0 != test_~tmp___0~2); 3003#L476-1 test_~tmp___2~0 := test_#t~nondet34;havoc test_#t~nondet34; 2992#L486 assume 0 != test_~tmp___2~0; 2987#L492-1 assume !(0 != ~pumpRunning~0); 2970#L198 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret11, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 2530#L282 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret10, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 2531#L256-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret9, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 2528#L230-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret30, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 2529#L597-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 2649#L602-3 isHighWaterLevel_#t~ret30 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret30;havoc isHighWaterLevel_#t~ret30; 2675#L401-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~0 := 0; 2676#L401-11 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 2862#L407-3 processEnvironment__wrappee__highWaterSensor_#t~ret9 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret9;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9; 2781#L234-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 2771#L205 havoc __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_#t~ret47, __utac_acc__Specification3_spec__1_#t~ret48, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 2858#L557-5 __utac_acc__Specification3_spec__1_#t~ret46 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret46;havoc __utac_acc__Specification3_spec__1_#t~ret46; 2847#L635 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~8);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; 2848#L589 __utac_acc__Specification3_spec__1_#t~ret47 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~3 := __utac_acc__Specification3_spec__1_#t~ret47;havoc __utac_acc__Specification3_spec__1_#t~ret47; 2829#L641 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~3); 2587#L641-1 [2020-11-29 20:30:14,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:14,638 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2020-11-29 20:30:14,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:14,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406976341] [2020-11-29 20:30:14,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:30:14,708 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:30:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:30:14,801 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:30:14,821 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:30:14,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:14,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1845464788, now seen corresponding path program 1 times [2020-11-29 20:30:14,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:14,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839694370] [2020-11-29 20:30:14,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:30:14,833 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:30:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:30:14,843 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:30:14,850 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:30:14,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:14,851 INFO L82 PathProgramCache]: Analyzing trace with hash -614119302, now seen corresponding path program 1 times [2020-11-29 20:30:14,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:14,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777438595] [2020-11-29 20:30:14,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:30:14,910 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:30:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:30:14,945 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:30:14,970 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:30:15,184 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-11-29 20:31:50,414 WARN L193 SmtUtils]: Spent 1.59 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-29 20:32:52,236 WARN L193 SmtUtils]: Spent 1.03 m on a formula simplification that was a NOOP. DAG size: 433 [2020-11-29 20:32:52,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 08:32:52 BoogieIcfgContainer [2020-11-29 20:32:52,716 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 20:32:52,717 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:32:52,717 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:32:52,717 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:32:52,719 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:30:10" (3/4) ... [2020-11-29 20:32:52,723 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 20:32:52,822 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d59c0f3b-fad0-4e16-9d21-549f662a6a7e/bin/uautomizer/witness.graphml [2020-11-29 20:32:52,822 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:32:52,830 INFO L168 Benchmark]: Toolchain (without parser) took 164923.63 ms. Allocated memory was 100.7 MB in the beginning and 182.5 MB in the end (delta: 81.8 MB). Free memory was 72.1 MB in the beginning and 64.9 MB in the end (delta: 7.2 MB). Peak memory consumption was 88.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:32:52,833 INFO L168 Benchmark]: CDTParser took 5.28 ms. Allocated memory is still 100.7 MB. Free memory was 56.7 MB in the beginning and 56.6 MB in the end (delta: 44.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:32:52,834 INFO L168 Benchmark]: CACSL2BoogieTranslator took 796.99 ms. Allocated memory is still 100.7 MB. Free memory was 71.8 MB in the beginning and 66.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:32:52,835 INFO L168 Benchmark]: Boogie Procedure Inliner took 176.09 ms. Allocated memory is still 100.7 MB. Free memory was 66.7 MB in the beginning and 60.8 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:32:52,835 INFO L168 Benchmark]: Boogie Preprocessor took 113.92 ms. Allocated memory is still 100.7 MB. Free memory was 60.8 MB in the beginning and 57.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:32:52,836 INFO L168 Benchmark]: RCFGBuilder took 1856.74 ms. Allocated memory was 100.7 MB in the beginning and 138.4 MB in the end (delta: 37.7 MB). Free memory was 57.0 MB in the beginning and 89.2 MB in the end (delta: -32.2 MB). Peak memory consumption was 37.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:32:52,837 INFO L168 Benchmark]: BuchiAutomizer took 161857.71 ms. Allocated memory was 138.4 MB in the beginning and 182.5 MB in the end (delta: 44.0 MB). Free memory was 89.2 MB in the beginning and 67.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 89.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:32:52,837 INFO L168 Benchmark]: Witness Printer took 111.89 ms. Allocated memory is still 182.5 MB. Free memory was 67.0 MB in the beginning and 64.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:32:52,845 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 5.28 ms. Allocated memory is still 100.7 MB. Free memory was 56.7 MB in the beginning and 56.6 MB in the end (delta: 44.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 796.99 ms. Allocated memory is still 100.7 MB. Free memory was 71.8 MB in the beginning and 66.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 176.09 ms. Allocated memory is still 100.7 MB. Free memory was 66.7 MB in the beginning and 60.8 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 113.92 ms. Allocated memory is still 100.7 MB. Free memory was 60.8 MB in the beginning and 57.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1856.74 ms. Allocated memory was 100.7 MB in the beginning and 138.4 MB in the end (delta: 37.7 MB). Free memory was 57.0 MB in the beginning and 89.2 MB in the end (delta: -32.2 MB). Peak memory consumption was 37.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 161857.71 ms. Allocated memory was 138.4 MB in the beginning and 182.5 MB in the end (delta: 44.0 MB). Free memory was 89.2 MB in the beginning and 67.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 89.5 MB. Max. memory is 16.1 GB. * Witness Printer took 111.89 ms. Allocated memory is still 182.5 MB. Free memory was 67.0 MB in the beginning and 64.9 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 534 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 161.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 159.9s. Construction of modules took 0.9s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 582 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 534 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 949 SDtfs, 2524 SDslu, 2501 SDs, 0 SdLazy, 244 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 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: 456]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=6441} State at position 1 is {NULL=0, NULL=6441, NULL=9789, NULL=0, NULL=0, NULL=9766, NULL=0, methaneLevelCritical=0, NULL=9781, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4249de4a=0, retValue_acc=0, NULL=0, tmp=0, NULL=9779, NULL=0, tmp___1=0, NULL=9786, NULL=9776, NULL=0, NULL=9778, cleanupTimeShifts=4, NULL=9780, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6fe6b076=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@354135ca=57, NULL=9790, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@46eaa382=0, NULL=0, NULL=0, waterLevel=1, \result=1, retValue_acc=1, head=0, pumpRunning=0, tmp=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@617927dd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@78bec184=0, \result=1, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, retValue_acc=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@37ea1470=0, tmp___0=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@600ecc9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@15020065=0, NULL=9770, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7e5f3bc6=0, tmp=0, head=0, NULL=9774, NULL=0, NULL=0, NULL=9782, tmp=0, NULL=9787, retValue_acc=0, NULL=0, NULL=9771, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@652ecf06=0, NULL=9788, NULL=0, tmp___0=0, NULL=0, NULL=9773, NULL=6442, NULL=0, tmp=0, NULL=9785, tmp___0=1, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=9777, \result=1, retValue_acc=0, \result=0, NULL=9791, \result=0, NULL=9783, NULL=0, NULL=0, NULL=0, NULL=9767, NULL=9769, NULL=9775, retValue_acc=1, tmp___2=57, splverifierCounter=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39ed79d7=0, \result=0, NULL=9784, NULL=9772, NULL=9768, tmp___1=0, NULL=9792} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L42] int cleanupTimeShifts = 4; [L190] int pumpRunning = 0; [L191] int systemActive = 1; [L514] int waterLevel = 1; [L515] int methaneLevelCritical = 0; [L829] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L123] int retValue_acc ; [L124] int tmp ; [L172] int retValue_acc ; [L175] retValue_acc = 1 [L176] return (retValue_acc); [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L447] int splverifierCounter ; [L448] int tmp ; [L449] int tmp___0 ; [L450] int tmp___1 ; [L451] int tmp___2 ; [L454] splverifierCounter = 0 Loop: [L456] COND TRUE 1 [L458] COND TRUE splverifierCounter < 4 [L464] tmp = __VERIFIER_nondet_int() [L466] COND FALSE !(\read(tmp)) [L474] tmp___0 = __VERIFIER_nondet_int() [L476] COND FALSE !(\read(tmp___0)) [L484] tmp___2 = __VERIFIER_nondet_int() [L486] COND TRUE \read(tmp___2) [L198] COND FALSE !(\read(pumpRunning)) [L205] COND TRUE \read(systemActive) [L279] int tmp ; [L282] COND FALSE !(\read(pumpRunning)) [L253] int tmp ; [L256] COND FALSE !(\read(pumpRunning)) [L227] int tmp ; [L230] COND TRUE ! pumpRunning [L393] int retValue_acc ; [L394] int tmp ; [L395] int tmp___0 ; [L594] int retValue_acc ; [L597] COND TRUE waterLevel < 2 [L598] retValue_acc = 1 [L599] return (retValue_acc); [L399] tmp = isHighWaterSensorDry() [L401] COND TRUE \read(tmp) [L402] tmp___0 = 0 [L406] retValue_acc = tmp___0 [L407] return (retValue_acc); [L232] tmp = isHighWaterLevel() [L234] COND FALSE !(\read(tmp)) [L627] int tmp ; [L628] int tmp___0 ; [L629] int tmp___1 ; [L553] int retValue_acc ; [L556] retValue_acc = methaneLevelCritical [L557] return (retValue_acc); [L633] tmp = isMethaneLevelCritical() [L635] COND FALSE !(\read(tmp)) [L585] int retValue_acc ; [L588] retValue_acc = waterLevel [L589] return (retValue_acc); [L639] tmp___0 = getWaterLevel() [L641] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...