./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product52.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_c32a5253-3ba1-4c5f-b6e5-4b3eb8edcf5d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c32a5253-3ba1-4c5f-b6e5-4b3eb8edcf5d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c32a5253-3ba1-4c5f-b6e5-4b3eb8edcf5d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c32a5253-3ba1-4c5f-b6e5-4b3eb8edcf5d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c32a5253-3ba1-4c5f-b6e5-4b3eb8edcf5d/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c32a5253-3ba1-4c5f-b6e5-4b3eb8edcf5d/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 67bbde08c422c0aae8c31f3e56c0c6d44363bbfb ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-30 00:57:04,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:57:04,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:57:04,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:57:04,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:57:04,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:57:04,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:57:04,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:57:04,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:57:04,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:57:04,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:57:04,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:57:04,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:57:04,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:57:04,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:57:04,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:57:04,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:57:04,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:57:04,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:57:04,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:57:04,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:57:04,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:57:04,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:57:04,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:57:04,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:57:04,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:57:04,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:57:04,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:57:04,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:57:04,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:57:04,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:57:04,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:57:04,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:57:04,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:57:04,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:57:04,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:57:04,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:57:04,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:57:04,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:57:04,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:57:04,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:57:04,386 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c32a5253-3ba1-4c5f-b6e5-4b3eb8edcf5d/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 00:57:04,418 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:57:04,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:57:04,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:57:04,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:57:04,421 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:57:04,421 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:57:04,421 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:57:04,422 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:57:04,422 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:57:04,422 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:57:04,423 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:57:04,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:57:04,423 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:57:04,424 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:57:04,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:57:04,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:57:04,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:57:04,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:57:04,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:57:04,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:57:04,426 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:57:04,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:57:04,426 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:57:04,427 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:57:04,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:57:04,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:57:04,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:57:04,428 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:57:04,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:57:04,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:57:04,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:57:04,429 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:57:04,431 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:57:04,431 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_c32a5253-3ba1-4c5f-b6e5-4b3eb8edcf5d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c32a5253-3ba1-4c5f-b6e5-4b3eb8edcf5d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67bbde08c422c0aae8c31f3e56c0c6d44363bbfb [2020-11-30 00:57:04,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:57:04,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:57:04,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:57:04,868 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:57:04,869 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:57:04,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c32a5253-3ba1-4c5f-b6e5-4b3eb8edcf5d/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c [2020-11-30 00:57:04,977 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c32a5253-3ba1-4c5f-b6e5-4b3eb8edcf5d/bin/uautomizer/data/c642a706a/7ab57579097f4dd6b1e11da59e9dacab/FLAG0be8784c4 [2020-11-30 00:57:05,738 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:57:05,739 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c32a5253-3ba1-4c5f-b6e5-4b3eb8edcf5d/sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c [2020-11-30 00:57:05,756 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c32a5253-3ba1-4c5f-b6e5-4b3eb8edcf5d/bin/uautomizer/data/c642a706a/7ab57579097f4dd6b1e11da59e9dacab/FLAG0be8784c4 [2020-11-30 00:57:06,015 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c32a5253-3ba1-4c5f-b6e5-4b3eb8edcf5d/bin/uautomizer/data/c642a706a/7ab57579097f4dd6b1e11da59e9dacab [2020-11-30 00:57:06,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:57:06,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:57:06,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:57:06,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:57:06,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:57:06,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:57:06" (1/1) ... [2020-11-30 00:57:06,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7029e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:06, skipping insertion in model container [2020-11-30 00:57:06,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:57:06" (1/1) ... [2020-11-30 00:57:06,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:57:06,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:57:06,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:57:06,710 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:57:06,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:57:06,921 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:57:06,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:06 WrapperNode [2020-11-30 00:57:06,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:57:06,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:57:06,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:57:06,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:57:06,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:06" (1/1) ... [2020-11-30 00:57:06,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:06" (1/1) ... [2020-11-30 00:57:07,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:57:07,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:57:07,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:57:07,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:57:07,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:06" (1/1) ... [2020-11-30 00:57:07,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:06" (1/1) ... [2020-11-30 00:57:07,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:06" (1/1) ... [2020-11-30 00:57:07,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:06" (1/1) ... [2020-11-30 00:57:07,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:06" (1/1) ... [2020-11-30 00:57:07,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:06" (1/1) ... [2020-11-30 00:57:07,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:06" (1/1) ... [2020-11-30 00:57:07,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:57:07,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:57:07,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:57:07,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:57:07,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c32a5253-3ba1-4c5f-b6e5-4b3eb8edcf5d/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 [2020-11-30 00:57:07,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:57:07,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:57:07,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:57:07,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:57:08,655 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:57:08,656 INFO L298 CfgBuilder]: Removed 174 assume(true) statements. [2020-11-30 00:57:08,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:57:08 BoogieIcfgContainer [2020-11-30 00:57:08,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:57:08,661 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:57:08,661 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:57:08,666 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:57:08,667 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:57:08,667 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:57:06" (1/3) ... [2020-11-30 00:57:08,669 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63bf1d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:57:08, skipping insertion in model container [2020-11-30 00:57:08,669 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:57:08,669 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:57:06" (2/3) ... [2020-11-30 00:57:08,670 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63bf1d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:57:08, skipping insertion in model container [2020-11-30 00:57:08,670 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:57:08,670 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:57:08" (3/3) ... [2020-11-30 00:57:08,672 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product52.cil.c [2020-11-30 00:57:08,732 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:57:08,732 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:57:08,732 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:57:08,733 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:57:08,733 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:57:08,733 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:57:08,733 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:57:08,733 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:57:08,755 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 125 states. [2020-11-30 00:57:08,792 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2020-11-30 00:57:08,792 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:57:08,792 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:57:08,803 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:57:08,804 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:57:08,804 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:57:08,804 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 125 states. [2020-11-30 00:57:08,814 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2020-11-30 00:57:08,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:57:08,817 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:57:08,819 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:57:08,819 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:57:08,834 INFO L794 eck$LassoCheckResult]: Stem: 99#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 11#L-1true havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 36#L885true havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 43#L893true main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 81#L980true assume 0 != main_~tmp~9; 117#L957true havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 68#L61-1true [2020-11-30 00:57:08,838 INFO L796 eck$LassoCheckResult]: Loop: 68#L61-1true assume !false; 79#L793true assume test_~splverifierCounter~0 < 4; 53#L794true test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 58#L802true assume !(0 != test_~tmp~8); 60#L802-1true test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 92#L812true assume !(0 != test_~tmp___0~3); 94#L812-1true test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 7#L822true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 15#L830-1true assume !(0 != ~pumpRunning~0); 57#L568true assume !(0 != ~systemActive~0); 106#L575true havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 110#L129true __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 101#L55true assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 68#L61-1true [2020-11-30 00:57:08,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:08,855 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-30 00:57:08,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:57:08,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572641519] [2020-11-30 00:57:08,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:57:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:57:09,269 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:57:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:57:09,470 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:57:09,538 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:57:09,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:09,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1670232129, now seen corresponding path program 1 times [2020-11-30 00:57:09,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:57:09,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135296173] [2020-11-30 00:57:09,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:57:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:57:09,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:09,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135296173] [2020-11-30 00:57:09,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:57:09,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:57:09,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720146061] [2020-11-30 00:57:09,649 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:57:09,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:57:09,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:57:09,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:57:09,676 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2020-11-30 00:57:09,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:57:09,811 INFO L93 Difference]: Finished difference Result 238 states and 348 transitions. [2020-11-30 00:57:09,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:57:09,818 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 238 states and 348 transitions. [2020-11-30 00:57:09,831 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 154 [2020-11-30 00:57:09,840 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 238 states to 224 states and 333 transitions. [2020-11-30 00:57:09,842 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 224 [2020-11-30 00:57:09,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 224 [2020-11-30 00:57:09,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 224 states and 333 transitions. [2020-11-30 00:57:09,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:57:09,847 INFO L691 BuchiCegarLoop]: Abstraction has 224 states and 333 transitions. [2020-11-30 00:57:09,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states and 333 transitions. [2020-11-30 00:57:09,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2020-11-30 00:57:09,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-11-30 00:57:09,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 330 transitions. [2020-11-30 00:57:09,924 INFO L714 BuchiCegarLoop]: Abstraction has 222 states and 330 transitions. [2020-11-30 00:57:09,925 INFO L594 BuchiCegarLoop]: Abstraction has 222 states and 330 transitions. [2020-11-30 00:57:09,925 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:57:09,926 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 222 states and 330 transitions. [2020-11-30 00:57:09,940 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2020-11-30 00:57:09,940 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:57:09,941 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:57:09,942 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:57:09,942 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:57:09,943 INFO L794 eck$LassoCheckResult]: Stem: 494#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 382#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 383#L885 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 422#L893 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 434#L980 assume 0 != main_~tmp~9; 484#L957 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 503#L61-1 [2020-11-30 00:57:09,943 INFO L796 eck$LassoCheckResult]: Loop: 503#L61-1 assume !false; 517#L793 assume test_~splverifierCounter~0 < 4; 516#L794 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 515#L802 assume !(0 != test_~tmp~8); 513#L802-1 test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 512#L812 assume !(0 != test_~tmp___0~3); 510#L812-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 509#L822 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 379#L830-1 assume !(0 != ~pumpRunning~0); 459#L568 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 460#L626 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret55, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 525#L600-1 assume !(0 == ~pumpRunning~0); 524#L575 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 523#L129 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 518#L55 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 503#L61-1 [2020-11-30 00:57:09,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:09,944 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-30 00:57:09,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:57:09,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356915282] [2020-11-30 00:57:09,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:57:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:57:10,045 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:57:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:57:10,140 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:57:10,179 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:57:10,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:10,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1415980259, now seen corresponding path program 1 times [2020-11-30 00:57:10,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:57:10,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826815688] [2020-11-30 00:57:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:57:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:57:10,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:10,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826815688] [2020-11-30 00:57:10,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:57:10,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:57:10,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288895347] [2020-11-30 00:57:10,208 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:57:10,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:57:10,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:57:10,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:57:10,210 INFO L87 Difference]: Start difference. First operand 222 states and 330 transitions. cyclomatic complexity: 111 Second operand 3 states. [2020-11-30 00:57:10,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:57:10,494 INFO L93 Difference]: Finished difference Result 317 states and 448 transitions. [2020-11-30 00:57:10,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:57:10,495 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 317 states and 448 transitions. [2020-11-30 00:57:10,501 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 223 [2020-11-30 00:57:10,508 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 317 states to 317 states and 448 transitions. [2020-11-30 00:57:10,510 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 317 [2020-11-30 00:57:10,514 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 317 [2020-11-30 00:57:10,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 317 states and 448 transitions. [2020-11-30 00:57:10,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:57:10,520 INFO L691 BuchiCegarLoop]: Abstraction has 317 states and 448 transitions. [2020-11-30 00:57:10,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states and 448 transitions. [2020-11-30 00:57:10,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2020-11-30 00:57:10,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-11-30 00:57:10,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 448 transitions. [2020-11-30 00:57:10,552 INFO L714 BuchiCegarLoop]: Abstraction has 317 states and 448 transitions. [2020-11-30 00:57:10,552 INFO L594 BuchiCegarLoop]: Abstraction has 317 states and 448 transitions. [2020-11-30 00:57:10,552 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:57:10,553 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 317 states and 448 transitions. [2020-11-30 00:57:10,557 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 223 [2020-11-30 00:57:10,557 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:57:10,558 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:57:10,560 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:57:10,560 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:57:10,560 INFO L794 eck$LassoCheckResult]: Stem: 1039#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 927#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 928#L885 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 970#L893 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 981#L980 assume 0 != main_~tmp~9; 1030#L957 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 936#L61-1 [2020-11-30 00:57:10,561 INFO L796 eck$LassoCheckResult]: Loop: 936#L61-1 assume !false; 1019#L793 assume test_~splverifierCounter~0 < 4; 998#L794 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 999#L802 assume !(0 != test_~tmp~8); 1007#L802-1 test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 1010#L812 assume !(0 != test_~tmp___0~3); 1023#L812-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 923#L822 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 924#L830-1 assume !(0 != ~pumpRunning~0); 934#L568 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 984#L626 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret55, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 985#L600-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 968#L169-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 969#L174-1 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 971#L728-3 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 932#L728-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 933#L734-1 processEnvironment__wrappee__highWaterSensor_#t~ret55 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret55;havoc processEnvironment__wrappee__highWaterSensor_#t~ret55; 993#L604-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 990#L575 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 1048#L129 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 1041#L55 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 936#L61-1 [2020-11-30 00:57:10,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:10,563 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-30 00:57:10,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:57:10,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23824678] [2020-11-30 00:57:10,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:57:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:57:10,642 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:57:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:57:10,734 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:57:10,754 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:57:10,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:10,756 INFO L82 PathProgramCache]: Analyzing trace with hash 890409545, now seen corresponding path program 1 times [2020-11-30 00:57:10,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:57:10,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304285158] [2020-11-30 00:57:10,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:57:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:57:10,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:57:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:57:10,773 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:57:10,779 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:57:10,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:10,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1346480739, now seen corresponding path program 1 times [2020-11-30 00:57:10,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:57:10,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290934786] [2020-11-30 00:57:10,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:57:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:57:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:57:10,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290934786] [2020-11-30 00:57:10,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:57:10,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:57:10,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243968561] [2020-11-30 00:57:11,162 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-11-30 00:57:11,269 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-11-30 00:57:11,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:57:11,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:57:11,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:57:11,284 INFO L87 Difference]: Start difference. First operand 317 states and 448 transitions. cyclomatic complexity: 134 Second operand 5 states. [2020-11-30 00:57:11,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:57:11,483 INFO L93 Difference]: Finished difference Result 1101 states and 1566 transitions. [2020-11-30 00:57:11,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:57:11,484 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1101 states and 1566 transitions. [2020-11-30 00:57:11,500 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 834 [2020-11-30 00:57:11,513 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1101 states to 1101 states and 1566 transitions. [2020-11-30 00:57:11,514 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1101 [2020-11-30 00:57:11,516 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1101 [2020-11-30 00:57:11,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1101 states and 1566 transitions. [2020-11-30 00:57:11,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:57:11,525 INFO L691 BuchiCegarLoop]: Abstraction has 1101 states and 1566 transitions. [2020-11-30 00:57:11,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states and 1566 transitions. [2020-11-30 00:57:11,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 628. [2020-11-30 00:57:11,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-11-30 00:57:11,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 874 transitions. [2020-11-30 00:57:11,568 INFO L714 BuchiCegarLoop]: Abstraction has 628 states and 874 transitions. [2020-11-30 00:57:11,568 INFO L594 BuchiCegarLoop]: Abstraction has 628 states and 874 transitions. [2020-11-30 00:57:11,568 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:57:11,568 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 628 states and 874 transitions. [2020-11-30 00:57:11,574 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 446 [2020-11-30 00:57:11,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:57:11,574 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:57:11,577 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:57:11,577 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] [2020-11-30 00:57:11,578 INFO L794 eck$LassoCheckResult]: Stem: 2481#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 2365#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~9;havoc main_~retValue_acc~13;havoc main_~tmp~9; 2366#L885 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 2409#L893 main_#t~ret81 := valid_product_#res;main_~tmp~9 := main_#t~ret81;havoc main_#t~ret81; 2422#L980 assume 0 != main_~tmp~9; 2470#L957 havoc test_#t~nondet76, test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2376#L61-1 [2020-11-30 00:57:11,578 INFO L796 eck$LassoCheckResult]: Loop: 2376#L61-1 assume !false; 2456#L793 assume test_~splverifierCounter~0 < 4; 2438#L794 test_~tmp~8 := test_#t~nondet76;havoc test_#t~nondet76; 2439#L802 assume !(0 != test_~tmp~8); 2446#L802-1 test_~tmp___0~3 := test_#t~nondet77;havoc test_#t~nondet77; 2449#L812 assume !(0 != test_~tmp___0~3); 2473#L812-1 test_~tmp___2~0 := test_#t~nondet78;havoc test_#t~nondet78; 2980#L822 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2360#L830-1 assume !(0 != ~pumpRunning~0); 2372#L568 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 2423#L626 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret55, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 2424#L600-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 2407#L169-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 2408#L174-1 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 2410#L728-3 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 2370#L728-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 2371#L734-1 processEnvironment__wrappee__highWaterSensor_#t~ret55 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret55;havoc processEnvironment__wrappee__highWaterSensor_#t~ret55; 2498#L604-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 2487#L575 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 2488#L129 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 2484#L55 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~0);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 2485#L161 __utac_acc__Specification3_spec__1_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 2457#L61 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 2376#L61-1 [2020-11-30 00:57:11,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:11,579 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2020-11-30 00:57:11,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:57:11,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544241055] [2020-11-30 00:57:11,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:57:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:57:11,641 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:57:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:57:11,700 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:57:11,717 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:57:11,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:11,718 INFO L82 PathProgramCache]: Analyzing trace with hash 985089053, now seen corresponding path program 1 times [2020-11-30 00:57:11,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:57:11,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86037016] [2020-11-30 00:57:11,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:57:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:57:11,729 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:57:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:57:11,753 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:57:11,759 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:57:11,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:57:11,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1182842295, now seen corresponding path program 1 times [2020-11-30 00:57:11,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:57:11,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921611811] [2020-11-30 00:57:11,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:57:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:57:11,796 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:57:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:57:11,832 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:57:11,853 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:57:12,298 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-11-30 00:57:12,410 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-11-30 00:59:03,237 WARN L193 SmtUtils]: Spent 1.85 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-30 01:00:12,653 WARN L193 SmtUtils]: Spent 1.16 m on a formula simplification that was a NOOP. DAG size: 433 [2020-11-30 01:00:13,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 01:00:13 BoogieIcfgContainer [2020-11-30 01:00:13,006 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 01:00:13,007 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:00:13,011 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:00:13,012 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:00:13,016 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:57:08" (3/4) ... [2020-11-30 01:00:13,019 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 01:00:13,110 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c32a5253-3ba1-4c5f-b6e5-4b3eb8edcf5d/bin/uautomizer/witness.graphml [2020-11-30 01:00:13,111 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:00:13,112 INFO L168 Benchmark]: Toolchain (without parser) took 187090.27 ms. Allocated memory was 88.1 MB in the beginning and 144.7 MB in the end (delta: 56.6 MB). Free memory was 55.5 MB in the beginning and 51.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 61.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:00:13,113 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 88.1 MB. Free memory was 48.0 MB in the beginning and 47.9 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:00:13,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 897.62 ms. Allocated memory is still 88.1 MB. Free memory was 55.4 MB in the beginning and 54.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:00:13,114 INFO L168 Benchmark]: Boogie Procedure Inliner took 135.03 ms. Allocated memory is still 88.1 MB. Free memory was 54.0 MB in the beginning and 50.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:00:13,114 INFO L168 Benchmark]: Boogie Preprocessor took 109.93 ms. Allocated memory is still 88.1 MB. Free memory was 50.3 MB in the beginning and 47.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:00:13,115 INFO L168 Benchmark]: RCFGBuilder took 1486.72 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 47.5 MB in the beginning and 68.9 MB in the end (delta: -21.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:00:13,115 INFO L168 Benchmark]: BuchiAutomizer took 184345.03 ms. Allocated memory was 109.1 MB in the beginning and 144.7 MB in the end (delta: 35.7 MB). Free memory was 68.9 MB in the beginning and 53.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 77.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:00:13,116 INFO L168 Benchmark]: Witness Printer took 104.02 ms. Allocated memory is still 144.7 MB. Free memory was 53.2 MB in the beginning and 51.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:00:13,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 88.1 MB. Free memory was 48.0 MB in the beginning and 47.9 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 897.62 ms. Allocated memory is still 88.1 MB. Free memory was 55.4 MB in the beginning and 54.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 135.03 ms. Allocated memory is still 88.1 MB. Free memory was 54.0 MB in the beginning and 50.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 109.93 ms. Allocated memory is still 88.1 MB. Free memory was 50.3 MB in the beginning and 47.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1486.72 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 47.5 MB in the beginning and 68.9 MB in the end (delta: -21.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 184345.03 ms. Allocated memory was 109.1 MB in the beginning and 144.7 MB in the end (delta: 35.7 MB). Free memory was 68.9 MB in the beginning and 53.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 77.3 MB. Max. memory is 16.1 GB. * Witness Printer took 104.02 ms. Allocated memory is still 144.7 MB. Free memory was 53.2 MB in the beginning and 51.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 628 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 184.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 183.2s. Construction of modules took 0.3s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 475 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 628 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 608 SDtfs, 985 SDslu, 1058 SDs, 0 SdLazy, 85 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 792]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=9577} State at position 1 is {NULL=0, NULL=0, NULL=9577, NULL=9601, NULL=0, NULL=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2688f36f=0, NULL=9588, methaneLevelCritical=0, retValue_acc=0, NULL=0, tmp___1=0, tmp=0, NULL=0, NULL=9592, tmp=0, cleanupTimeShifts=4, NULL=9578, NULL=9605, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3960da9c=0, NULL=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, retValue_acc=1, \result=1, NULL=9597, NULL=0, NULL=0, tmp___0=0, tmp=1, NULL=9600, NULL=9598, head=0, tmp=0, tmp=1, NULL=0, NULL=9596, NULL=9584, NULL=9591, retValue_acc=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39261475=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@64733569=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26ca58f0=0, NULL=0, NULL=9602, NULL=9583, NULL=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@13b61fb3=0, NULL=0, NULL=0, NULL=9581, NULL=0, tmp___0=1, tmp=0, NULL=9579, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@514efbca=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@650353b=66, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@568a985f=0, NULL=0, systemActive=1, NULL=9603, \result=1, \result=0, NULL=9599, NULL=0, NULL=0, NULL=9586, retValue_acc=0, NULL=9593, \result=0, NULL=9582, NULL=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34eda226=0, NULL=9604, NULL=9595, NULL=9590, tmp___2=66, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=9589, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c603b5=0, NULL=9587, NULL=9585, NULL=0, NULL=0, NULL=0, NULL=9594, NULL=9580} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L86] int waterLevel = 1; [L87] int methaneLevelCritical = 0; [L358] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L561] int pumpRunning = 0; [L562] int systemActive = 1; [L898] int cleanupTimeShifts = 4; [L971] int retValue_acc ; [L972] int tmp ; [L889] int retValue_acc ; [L892] retValue_acc = 1 [L893] return (retValue_acc); [L978] tmp = valid_product() [L980] COND TRUE \read(tmp) [L783] int splverifierCounter ; [L784] int tmp ; [L785] int tmp___0 ; [L786] int tmp___1 ; [L787] int tmp___2 ; [L790] splverifierCounter = 0 Loop: [L792] COND TRUE 1 [L794] COND TRUE splverifierCounter < 4 [L800] tmp = __VERIFIER_nondet_int() [L802] COND FALSE !(\read(tmp)) [L810] tmp___0 = __VERIFIER_nondet_int() [L812] COND FALSE !(\read(tmp___0)) [L820] tmp___2 = __VERIFIER_nondet_int() [L822] COND TRUE \read(tmp___2) [L776] systemActive = 1 [L568] COND FALSE !(\read(pumpRunning)) [L575] COND TRUE \read(systemActive) [L623] int tmp ; [L626] COND FALSE !(\read(pumpRunning)) [L597] int tmp ; [L600] COND TRUE ! pumpRunning [L720] int retValue_acc ; [L721] int tmp ; [L722] int tmp___0 ; [L166] int retValue_acc ; [L169] COND TRUE waterLevel < 2 [L170] retValue_acc = 1 [L171] return (retValue_acc); [L726] tmp = isHighWaterSensorDry() [L728] COND TRUE \read(tmp) [L729] tmp___0 = 0 [L733] retValue_acc = tmp___0 [L734] return (retValue_acc); [L602] tmp = isHighWaterLevel() [L604] COND FALSE !(\read(tmp)) [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L125] int retValue_acc ; [L128] retValue_acc = methaneLevelCritical [L129] return (retValue_acc); [L53] tmp = isMethaneLevelCritical() [L55] COND FALSE !(\read(tmp)) [L157] int retValue_acc ; [L160] retValue_acc = waterLevel [L161] return (retValue_acc); [L59] tmp___0 = getWaterLevel() [L61] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...