./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product55.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_acaad94e-b558-4576-b864-909b8c388f3d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_acaad94e-b558-4576-b864-909b8c388f3d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_acaad94e-b558-4576-b864-909b8c388f3d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_acaad94e-b558-4576-b864-909b8c388f3d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product55.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_acaad94e-b558-4576-b864-909b8c388f3d/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_acaad94e-b558-4576-b864-909b8c388f3d/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 4cb84f4cda4da5ed2f20ac89ec7baabe2dc4055e ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:40:32,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:40:32,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:40:32,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:40:32,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:40:32,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:40:32,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:40:32,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:40:32,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:40:32,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:40:32,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:40:32,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:40:32,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:40:32,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:40:32,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:40:32,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:40:32,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:40:32,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:40:32,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:40:32,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:40:32,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:40:32,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:40:32,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:40:32,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:40:32,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:40:32,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:40:32,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:40:32,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:40:32,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:40:32,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:40:32,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:40:32,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:40:32,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:40:32,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:40:32,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:40:32,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:40:32,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:40:32,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:40:32,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:40:32,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:40:32,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:40:32,344 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_acaad94e-b558-4576-b864-909b8c388f3d/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 20:40:32,384 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:40:32,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:40:32,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:40:32,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:40:32,387 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:40:32,388 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 20:40:32,388 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 20:40:32,388 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 20:40:32,389 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 20:40:32,389 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 20:40:32,390 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 20:40:32,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:40:32,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:40:32,391 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:40:32,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:40:32,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:40:32,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:40:32,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 20:40:32,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 20:40:32,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 20:40:32,393 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:40:32,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:40:32,394 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 20:40:32,394 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:40:32,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 20:40:32,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:40:32,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:40:32,395 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 20:40:32,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:40:32,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:40:32,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:40:32,398 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 20:40:32,400 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 20:40:32,400 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_acaad94e-b558-4576-b864-909b8c388f3d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_acaad94e-b558-4576-b864-909b8c388f3d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cb84f4cda4da5ed2f20ac89ec7baabe2dc4055e [2020-11-29 20:40:32,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:40:32,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:40:32,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:40:32,800 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:40:32,803 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:40:32,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_acaad94e-b558-4576-b864-909b8c388f3d/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product55.cil.c [2020-11-29 20:40:32,906 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_acaad94e-b558-4576-b864-909b8c388f3d/bin/uautomizer/data/3837ab981/96a6aae7120c49e6957fa767ebe944ee/FLAGdbb239feb [2020-11-29 20:40:33,648 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:40:33,653 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_acaad94e-b558-4576-b864-909b8c388f3d/sv-benchmarks/c/product-lines/minepump_spec3_product55.cil.c [2020-11-29 20:40:33,673 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_acaad94e-b558-4576-b864-909b8c388f3d/bin/uautomizer/data/3837ab981/96a6aae7120c49e6957fa767ebe944ee/FLAGdbb239feb [2020-11-29 20:40:33,925 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_acaad94e-b558-4576-b864-909b8c388f3d/bin/uautomizer/data/3837ab981/96a6aae7120c49e6957fa767ebe944ee [2020-11-29 20:40:33,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:40:33,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:40:33,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:40:33,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:40:33,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:40:33,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:40:33" (1/1) ... [2020-11-29 20:40:33,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d3b0e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:40:33, skipping insertion in model container [2020-11-29 20:40:33,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:40:33" (1/1) ... [2020-11-29 20:40:33,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:40:34,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:40:34,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:40:34,407 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:40:34,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:40:34,596 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:40:34,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:40:34 WrapperNode [2020-11-29 20:40:34,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:40:34,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:40:34,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:40:34,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:40:34,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:40:34" (1/1) ... [2020-11-29 20:40:34,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:40:34" (1/1) ... [2020-11-29 20:40:34,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:40:34,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:40:34,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:40:34,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:40:34,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:40:34" (1/1) ... [2020-11-29 20:40:34,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:40:34" (1/1) ... [2020-11-29 20:40:34,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:40:34" (1/1) ... [2020-11-29 20:40:34,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:40:34" (1/1) ... [2020-11-29 20:40:34,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:40:34" (1/1) ... [2020-11-29 20:40:34,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:40:34" (1/1) ... [2020-11-29 20:40:34,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:40:34" (1/1) ... [2020-11-29 20:40:34,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:40:34,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:40:34,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:40:34,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:40:34,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:40:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acaad94e-b558-4576-b864-909b8c388f3d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:40:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:40:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:40:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:40:34,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:40:36,292 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:40:36,293 INFO L298 CfgBuilder]: Removed 292 assume(true) statements. [2020-11-29 20:40:36,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:40:36 BoogieIcfgContainer [2020-11-29 20:40:36,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:40:36,301 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 20:40:36,301 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 20:40:36,305 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 20:40:36,306 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:40:36,306 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 08:40:33" (1/3) ... [2020-11-29 20:40:36,308 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f96ede2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:40:36, skipping insertion in model container [2020-11-29 20:40:36,308 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:40:36,309 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:40:34" (2/3) ... [2020-11-29 20:40:36,309 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f96ede2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:40:36, skipping insertion in model container [2020-11-29 20:40:36,310 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:40:36,310 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:40:36" (3/3) ... [2020-11-29 20:40:36,312 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product55.cil.c [2020-11-29 20:40:36,368 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 20:40:36,368 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 20:40:36,369 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 20:40:36,369 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:40:36,369 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:40:36,369 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 20:40:36,369 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:40:36,370 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 20:40:36,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 197 states. [2020-11-29 20:40:36,436 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 129 [2020-11-29 20:40:36,438 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:40:36,439 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:40:36,448 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:40:36,449 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:40:36,449 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 20:40:36,449 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 197 states. [2020-11-29 20:40:36,461 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 129 [2020-11-29 20:40:36,462 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:40:36,462 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:40:36,463 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:40:36,463 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:40:36,469 INFO L794 eck$LassoCheckResult]: Stem: 64#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.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;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 13#L-1true havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~9, main_~tmp~3;havoc main_~retValue_acc~9;havoc main_~tmp~3; 148#L67true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 44#L75true main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 135#L651true assume 0 != main_~tmp~3; 80#L627true havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 41#L923-1true [2020-11-29 20:40:36,470 INFO L796 eck$LassoCheckResult]: Loop: 41#L923-1true assume !false; 149#L953true assume test_~splverifierCounter~0 < 4; 123#L954true test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 28#L962true assume !(0 != test_~tmp~10); 29#L962-1true test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 166#L972true assume !(0 != test_~tmp___0~3); 168#L972-1true test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 196#L982true assume 0 != test_~tmp___2~0; 189#L988-1true assume !(0 != ~pumpRunning~0); 72#L677true assume !(0 != ~systemActive~0); 133#L684true havoc __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 22#L131-1true __utac_acc__Specification3_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 170#L917true assume 0 != __utac_acc__Specification3_spec__1_~tmp~9; 41#L923-1true [2020-11-29 20:40:36,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:40:36,476 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-29 20:40:36,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:40:36,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179217466] [2020-11-29 20:40:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:40:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:40:36,807 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:40:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:40:36,999 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:40:37,062 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:40:37,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:40:37,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1667892546, now seen corresponding path program 1 times [2020-11-29 20:40:37,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:40:37,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859436826] [2020-11-29 20:40:37,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:40:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:40:37,085 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:40:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:40:37,095 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:40:37,108 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:40:37,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:40:37,112 INFO L82 PathProgramCache]: Analyzing trace with hash 46386392, now seen corresponding path program 1 times [2020-11-29 20:40:37,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:40:37,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126472131] [2020-11-29 20:40:37,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:40:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:40:37,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:40:37,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126472131] [2020-11-29 20:40:37,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:40:37,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:40:37,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411366034] [2020-11-29 20:40:37,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:40:37,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:40:37,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:40:37,473 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 6 states. [2020-11-29 20:40:37,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:40:37,799 INFO L93 Difference]: Finished difference Result 438 states and 645 transitions. [2020-11-29 20:40:37,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:40:37,803 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 438 states and 645 transitions. [2020-11-29 20:40:37,819 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 285 [2020-11-29 20:40:37,838 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 438 states to 417 states and 624 transitions. [2020-11-29 20:40:37,839 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 417 [2020-11-29 20:40:37,845 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 417 [2020-11-29 20:40:37,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 417 states and 624 transitions. [2020-11-29 20:40:37,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:40:37,858 INFO L691 BuchiCegarLoop]: Abstraction has 417 states and 624 transitions. [2020-11-29 20:40:37,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states and 624 transitions. [2020-11-29 20:40:37,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 234. [2020-11-29 20:40:37,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-29 20:40:37,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 348 transitions. [2020-11-29 20:40:37,908 INFO L714 BuchiCegarLoop]: Abstraction has 234 states and 348 transitions. [2020-11-29 20:40:37,908 INFO L594 BuchiCegarLoop]: Abstraction has 234 states and 348 transitions. [2020-11-29 20:40:37,908 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 20:40:37,908 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 234 states and 348 transitions. [2020-11-29 20:40:37,914 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 160 [2020-11-29 20:40:37,915 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:40:37,915 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:40:37,918 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:40:37,918 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:40:37,919 INFO L794 eck$LassoCheckResult]: Stem: 817#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.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;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 687#L-1 havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~9, main_~tmp~3;havoc main_~retValue_acc~9;havoc main_~tmp~3; 688#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 762#L75 main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 734#L651 assume 0 != main_~tmp~3; 735#L627 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 760#L923-1 [2020-11-29 20:40:37,920 INFO L796 eck$LassoCheckResult]: Loop: 760#L923-1 assume !false; 763#L953 assume test_~splverifierCounter~0 < 4; 716#L954 test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 717#L962 assume !(0 != test_~tmp~10); 729#L962-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 733#L972 assume !(0 != test_~tmp___0~3); 793#L972-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 797#L982 assume 0 != test_~tmp___2~0; 821#L988-1 assume !(0 != ~pumpRunning~0); 771#L677 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 722#L761 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret55, processEnvironment__wrappee__lowWaterSensor_~tmp~5;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~5; 723#L735-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret54, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 668#L709-3 assume !(0 == ~pumpRunning~0); 655#L684 havoc __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 708#L131-1 __utac_acc__Specification3_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 709#L917 assume 0 != __utac_acc__Specification3_spec__1_~tmp~9; 760#L923-1 [2020-11-29 20:40:37,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:40:37,922 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-29 20:40:37,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:40:37,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230398505] [2020-11-29 20:40:37,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:40:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:40:38,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:40:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:40:38,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:40:38,091 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:40:38,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:40:38,092 INFO L82 PathProgramCache]: Analyzing trace with hash -2101003031, now seen corresponding path program 1 times [2020-11-29 20:40:38,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:40:38,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380903029] [2020-11-29 20:40:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:40:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:40:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:40:38,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380903029] [2020-11-29 20:40:38,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:40:38,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:40:38,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839333663] [2020-11-29 20:40:38,109 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 20:40:38,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:40:38,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:40:38,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:40:38,110 INFO L87 Difference]: Start difference. First operand 234 states and 348 transitions. cyclomatic complexity: 117 Second operand 3 states. [2020-11-29 20:40:38,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:40:38,352 INFO L93 Difference]: Finished difference Result 243 states and 337 transitions. [2020-11-29 20:40:38,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:40:38,354 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 243 states and 337 transitions. [2020-11-29 20:40:38,357 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 170 [2020-11-29 20:40:38,360 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 243 states to 243 states and 337 transitions. [2020-11-29 20:40:38,361 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 243 [2020-11-29 20:40:38,361 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 243 [2020-11-29 20:40:38,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 243 states and 337 transitions. [2020-11-29 20:40:38,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:40:38,368 INFO L691 BuchiCegarLoop]: Abstraction has 243 states and 337 transitions. [2020-11-29 20:40:38,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states and 337 transitions. [2020-11-29 20:40:38,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2020-11-29 20:40:38,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-11-29 20:40:38,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 337 transitions. [2020-11-29 20:40:38,403 INFO L714 BuchiCegarLoop]: Abstraction has 243 states and 337 transitions. [2020-11-29 20:40:38,403 INFO L594 BuchiCegarLoop]: Abstraction has 243 states and 337 transitions. [2020-11-29 20:40:38,404 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 20:40:38,404 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 243 states and 337 transitions. [2020-11-29 20:40:38,406 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 170 [2020-11-29 20:40:38,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:40:38,410 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:40:38,411 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:40:38,413 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:40:38,413 INFO L794 eck$LassoCheckResult]: Stem: 1280#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.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;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 1155#L-1 havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~9, main_~tmp~3;havoc main_~retValue_acc~9;havoc main_~tmp~3; 1156#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1225#L75 main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 1196#L651 assume 0 != main_~tmp~3; 1197#L627 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1226#L923-1 [2020-11-29 20:40:38,414 INFO L796 eck$LassoCheckResult]: Loop: 1226#L923-1 assume !false; 1227#L953 assume test_~splverifierCounter~0 < 4; 1348#L954 test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 1360#L962 assume !(0 != test_~tmp~10); 1358#L962-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 1357#L972 assume !(0 != test_~tmp___0~3); 1355#L972-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 1353#L982 assume 0 != test_~tmp___2~0; 1352#L988-1 assume !(0 != ~pumpRunning~0); 1286#L677 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 1182#L761 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret55, processEnvironment__wrappee__lowWaterSensor_~tmp~5;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~5; 1183#L735-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret54, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 1144#L709-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 1145#L171-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 1233#L176-3 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 1151#L863-9 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~0 := 0; 1152#L863-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 1299#L869-3 processEnvironment__wrappee__highWaterSensor_#t~ret54 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret54;havoc processEnvironment__wrappee__highWaterSensor_#t~ret54; 1270#L713-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 1184#L684 havoc __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 1361#L131-1 __utac_acc__Specification3_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 1350#L917 assume 0 != __utac_acc__Specification3_spec__1_~tmp~9; 1226#L923-1 [2020-11-29 20:40:38,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:40:38,415 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-29 20:40:38,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:40:38,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063275726] [2020-11-29 20:40:38,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:40:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:40:38,462 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:40:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:40:38,528 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:40:38,539 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:40:38,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:40:38,540 INFO L82 PathProgramCache]: Analyzing trace with hash 2033396629, now seen corresponding path program 1 times [2020-11-29 20:40:38,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:40:38,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665037979] [2020-11-29 20:40:38,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:40:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:40:38,546 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:40:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:40:38,550 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:40:38,554 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:40:38,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:40:38,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1008265541, now seen corresponding path program 1 times [2020-11-29 20:40:38,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:40:38,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094438813] [2020-11-29 20:40:38,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:40:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:40:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:40:38,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094438813] [2020-11-29 20:40:38,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:40:38,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:40:38,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221504542] [2020-11-29 20:40:38,807 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-11-29 20:40:38,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:40:38,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:40:38,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:40:38,890 INFO L87 Difference]: Start difference. First operand 243 states and 337 transitions. cyclomatic complexity: 97 Second operand 5 states. [2020-11-29 20:40:39,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:40:39,118 INFO L93 Difference]: Finished difference Result 806 states and 1118 transitions. [2020-11-29 20:40:39,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:40:39,119 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 806 states and 1118 transitions. [2020-11-29 20:40:39,130 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 595 [2020-11-29 20:40:39,138 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 806 states to 806 states and 1118 transitions. [2020-11-29 20:40:39,139 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 806 [2020-11-29 20:40:39,140 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 806 [2020-11-29 20:40:39,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 806 states and 1118 transitions. [2020-11-29 20:40:39,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:40:39,142 INFO L691 BuchiCegarLoop]: Abstraction has 806 states and 1118 transitions. [2020-11-29 20:40:39,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states and 1118 transitions. [2020-11-29 20:40:39,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 480. [2020-11-29 20:40:39,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2020-11-29 20:40:39,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 656 transitions. [2020-11-29 20:40:39,179 INFO L714 BuchiCegarLoop]: Abstraction has 480 states and 656 transitions. [2020-11-29 20:40:39,179 INFO L594 BuchiCegarLoop]: Abstraction has 480 states and 656 transitions. [2020-11-29 20:40:39,179 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 20:40:39,180 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 480 states and 656 transitions. [2020-11-29 20:40:39,184 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 340 [2020-11-29 20:40:39,184 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:40:39,185 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:40:39,186 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:40:39,186 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:40:39,186 INFO L794 eck$LassoCheckResult]: Stem: 2357#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.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;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 2224#L-1 havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~9, main_~tmp~3;havoc main_~retValue_acc~9;havoc main_~tmp~3; 2225#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 2297#L75 main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 2265#L651 assume 0 != main_~tmp~3; 2266#L627 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2369#L923-1 [2020-11-29 20:40:39,186 INFO L796 eck$LassoCheckResult]: Loop: 2369#L923-1 assume !false; 2596#L953 assume test_~splverifierCounter~0 < 4; 2247#L954 test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 2248#L962 assume !(0 != test_~tmp~10); 2257#L962-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 2262#L972 assume !(0 != test_~tmp___0~3); 2333#L972-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 2337#L982 assume 0 != test_~tmp___2~0; 2361#L988-1 assume !(0 != ~pumpRunning~0); 2609#L677 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 2607#L761 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret55, processEnvironment__wrappee__lowWaterSensor_~tmp~5;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~5; 2548#L735-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret54, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 2605#L709-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 2604#L171-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 2603#L176-3 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 2216#L863-9 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~0 := 0; 2217#L863-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 2385#L869-3 processEnvironment__wrappee__highWaterSensor_#t~ret54 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret54;havoc processEnvironment__wrappee__highWaterSensor_#t~ret54; 2346#L713-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 2252#L684 havoc __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 2602#L131-1 __utac_acc__Specification3_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 2601#L917 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~9);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~3;havoc getWaterLevel_~retValue_acc~3;getWaterLevel_~retValue_acc~3 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~3; 2600#L163 __utac_acc__Specification3_spec__1_#t~ret77 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 2597#L923 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 2369#L923-1 [2020-11-29 20:40:39,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:40:39,187 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2020-11-29 20:40:39,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:40:39,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137160631] [2020-11-29 20:40:39,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:40:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:40:39,246 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:40:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:40:39,284 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:40:39,302 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:40:39,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:40:39,303 INFO L82 PathProgramCache]: Analyzing trace with hash -115947607, now seen corresponding path program 1 times [2020-11-29 20:40:39,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:40:39,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696362557] [2020-11-29 20:40:39,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:40:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:40:39,311 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:40:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:40:39,320 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:40:39,327 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:40:39,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:40:39,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1719435599, now seen corresponding path program 1 times [2020-11-29 20:40:39,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:40:39,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755764806] [2020-11-29 20:40:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:40:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:40:39,388 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:40:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:40:39,439 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:40:39,465 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:40:39,693 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-11-29 20:41:53,192 WARN L193 SmtUtils]: Spent 1.22 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-29 20:42:42,268 WARN L193 SmtUtils]: Spent 49.07 s on a formula simplification that was a NOOP. DAG size: 433 [2020-11-29 20:42:42,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 08:42:42 BoogieIcfgContainer [2020-11-29 20:42:42,489 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 20:42:42,489 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:42:42,490 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:42:42,490 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:42:42,490 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:40:36" (3/4) ... [2020-11-29 20:42:42,493 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 20:42:42,547 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_acaad94e-b558-4576-b864-909b8c388f3d/bin/uautomizer/witness.graphml [2020-11-29 20:42:42,547 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:42:42,548 INFO L168 Benchmark]: Toolchain (without parser) took 128617.39 ms. Allocated memory was 86.0 MB in the beginning and 151.0 MB in the end (delta: 65.0 MB). Free memory was 55.4 MB in the beginning and 57.7 MB in the end (delta: -2.4 MB). Peak memory consumption was 61.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:42:42,549 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 86.0 MB. Free memory was 43.7 MB in the beginning and 43.7 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:42:42,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.11 ms. Allocated memory is still 86.0 MB. Free memory was 55.2 MB in the beginning and 52.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:42:42,550 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.80 ms. Allocated memory is still 86.0 MB. Free memory was 52.4 MB in the beginning and 47.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:42:42,551 INFO L168 Benchmark]: Boogie Preprocessor took 78.99 ms. Allocated memory is still 86.0 MB. Free memory was 47.8 MB in the beginning and 44.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:42:42,551 INFO L168 Benchmark]: RCFGBuilder took 1497.04 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 44.1 MB in the beginning and 52.6 MB in the end (delta: -8.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:42:42,552 INFO L168 Benchmark]: BuchiAutomizer took 126188.28 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 52.6 MB in the beginning and 60.9 MB in the end (delta: -8.3 MB). Peak memory consumption was 65.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:42:42,552 INFO L168 Benchmark]: Witness Printer took 57.73 ms. Allocated memory is still 151.0 MB. Free memory was 60.9 MB in the beginning and 57.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:42:42,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 86.0 MB. Free memory was 43.7 MB in the beginning and 43.7 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 663.11 ms. Allocated memory is still 86.0 MB. Free memory was 55.2 MB in the beginning and 52.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 122.80 ms. Allocated memory is still 86.0 MB. Free memory was 52.4 MB in the beginning and 47.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.99 ms. Allocated memory is still 86.0 MB. Free memory was 47.8 MB in the beginning and 44.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1497.04 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 44.1 MB in the beginning and 52.6 MB in the end (delta: -8.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 126188.28 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 52.6 MB in the beginning and 60.9 MB in the end (delta: -8.3 MB). Peak memory consumption was 65.8 MB. Max. memory is 16.1 GB. * Witness Printer took 57.73 ms. Allocated memory is still 151.0 MB. Free memory was 60.9 MB in the beginning and 57.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 480 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 126.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 124.9s. Construction of modules took 0.4s. 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, 509 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 480 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 817 SDtfs, 2445 SDslu, 2160 SDs, 0 SdLazy, 150 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 952]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=12349} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=12349, NULL=12377, NULL=12368, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c1ddce1=0, NULL=12372, methaneLevelCritical=0, NULL=0, tmp___1=0, NULL=0, NULL=12361, NULL=12355, cleanupTimeShifts=4, NULL=12351, tmp=0, NULL=12353, waterLevel=1, NULL=0, NULL=0, retValue_acc=1, \result=1, head=0, pumpRunning=0, tmp=1, retValue_acc=1, NULL=0, \result=1, NULL=12350, NULL=0, retValue_acc=0, NULL=0, tmp=1, tmp___0=0, NULL=12365, NULL=12358, NULL=12374, head=0, tmp=0, NULL=0, NULL=0, NULL=12352, NULL=12370, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23c28015=0, NULL=0, NULL=0, NULL=12367, NULL=12359, retValue_acc=0, NULL=12356, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@154f68a7=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@336c3baa=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2af3d196=0, NULL=0, NULL=0, NULL=12357, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a3acbda=0, tmp=0, NULL=0, tmp=0, NULL=12354, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4603bad4=0, tmp___0=1, NULL=0, systemActive=1, NULL=12375, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7bf06cd1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@686b5817=54, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@727339b3=0, \result=0, retValue_acc=0, NULL=12360, NULL=0, NULL=12371, NULL=12363, \result=0, NULL=0, NULL=0, NULL=12364, NULL=12376, NULL=12373, retValue_acc=1, tmp=0, tmp___2=54, splverifierCounter=0, NULL=0, NULL=0, NULL=0, \result=0, NULL=12369, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6ee4331c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3ba678e=0, tmp___1=0, NULL=12362, NULL=0, NULL=0, NULL=0, NULL=12366} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L88] int waterLevel = 1; [L89] int methaneLevelCritical = 0; [L369] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L566] int cleanupTimeShifts = 4; [L669] int pumpRunning = 0; [L670] int systemActive = 1; [L642] int retValue_acc ; [L643] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L649] tmp = valid_product() [L651] COND TRUE \read(tmp) [L943] int splverifierCounter ; [L944] int tmp ; [L945] int tmp___0 ; [L946] int tmp___1 ; [L947] int tmp___2 ; [L950] splverifierCounter = 0 Loop: [L952] COND TRUE 1 [L954] COND TRUE splverifierCounter < 4 [L960] tmp = __VERIFIER_nondet_int() [L962] COND FALSE !(\read(tmp)) [L970] tmp___0 = __VERIFIER_nondet_int() [L972] COND FALSE !(\read(tmp___0)) [L980] tmp___2 = __VERIFIER_nondet_int() [L982] COND TRUE \read(tmp___2) [L677] COND FALSE !(\read(pumpRunning)) [L684] COND TRUE \read(systemActive) [L758] int tmp ; [L761] COND FALSE !(\read(pumpRunning)) [L732] int tmp ; [L735] COND FALSE !(\read(pumpRunning)) [L706] int tmp ; [L709] COND TRUE ! pumpRunning [L855] int retValue_acc ; [L856] int tmp ; [L857] int tmp___0 ; [L168] int retValue_acc ; [L171] COND TRUE waterLevel < 2 [L172] retValue_acc = 1 [L173] return (retValue_acc); [L861] tmp = isHighWaterSensorDry() [L863] COND TRUE \read(tmp) [L864] tmp___0 = 0 [L868] retValue_acc = tmp___0 [L869] return (retValue_acc); [L711] tmp = isHighWaterLevel() [L713] COND FALSE !(\read(tmp)) [L909] int tmp ; [L910] int tmp___0 ; [L911] int tmp___1 ; [L127] int retValue_acc ; [L130] retValue_acc = methaneLevelCritical [L131] return (retValue_acc); [L915] tmp = isMethaneLevelCritical() [L917] COND FALSE !(\read(tmp)) [L159] int retValue_acc ; [L162] retValue_acc = waterLevel [L163] return (retValue_acc); [L921] tmp___0 = getWaterLevel() [L923] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...