./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product39.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_909a262e-0311-4592-925c-f7292c711fae/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_909a262e-0311-4592-925c-f7292c711fae/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_909a262e-0311-4592-925c-f7292c711fae/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_909a262e-0311-4592-925c-f7292c711fae/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product39.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_909a262e-0311-4592-925c-f7292c711fae/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_909a262e-0311-4592-925c-f7292c711fae/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 bee6f831173327ce1f460fb3d7d046a57a66e8b4 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 20:15:48,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:15:48,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:15:48,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:15:48,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:15:48,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:15:48,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:15:48,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:15:48,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:15:48,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:15:48,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:15:48,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:15:48,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:15:48,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:15:48,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:15:48,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:15:48,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:15:48,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:15:48,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:15:48,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:15:48,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:15:48,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:15:48,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:15:48,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:15:48,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:15:48,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:15:48,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:15:48,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:15:48,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:15:48,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:15:48,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:15:48,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:15:48,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:15:48,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:15:48,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:15:48,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:15:48,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:15:48,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:15:48,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:15:48,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:15:48,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:15:48,600 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_909a262e-0311-4592-925c-f7292c711fae/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 20:15:48,651 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:15:48,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:15:48,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:15:48,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:15:48,654 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:15:48,654 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 20:15:48,654 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 20:15:48,654 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 20:15:48,655 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 20:15:48,655 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 20:15:48,656 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 20:15:48,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:15:48,656 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:15:48,657 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:15:48,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:15:48,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:15:48,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:15:48,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 20:15:48,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 20:15:48,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 20:15:48,658 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:15:48,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:15:48,659 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 20:15:48,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:15:48,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 20:15:48,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:15:48,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:15:48,660 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 20:15:48,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:15:48,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:15:48,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:15:48,662 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 20:15:48,664 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 20:15:48,664 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_909a262e-0311-4592-925c-f7292c711fae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_909a262e-0311-4592-925c-f7292c711fae/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bee6f831173327ce1f460fb3d7d046a57a66e8b4 [2020-11-29 20:15:48,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:15:48,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:15:48,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:15:48,954 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:15:48,966 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:15:48,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_909a262e-0311-4592-925c-f7292c711fae/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec2_product39.cil.c [2020-11-29 20:15:49,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_909a262e-0311-4592-925c-f7292c711fae/bin/uautomizer/data/2ae10f49c/d2e92c2a6611496388d16e250ee611ea/FLAG482ec5803 [2020-11-29 20:15:49,708 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:15:49,712 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_909a262e-0311-4592-925c-f7292c711fae/sv-benchmarks/c/product-lines/minepump_spec2_product39.cil.c [2020-11-29 20:15:49,733 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_909a262e-0311-4592-925c-f7292c711fae/bin/uautomizer/data/2ae10f49c/d2e92c2a6611496388d16e250ee611ea/FLAG482ec5803 [2020-11-29 20:15:50,042 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_909a262e-0311-4592-925c-f7292c711fae/bin/uautomizer/data/2ae10f49c/d2e92c2a6611496388d16e250ee611ea [2020-11-29 20:15:50,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:15:50,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:15:50,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:15:50,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:15:50,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:15:50,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:15:50" (1/1) ... [2020-11-29 20:15:50,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a68ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:50, skipping insertion in model container [2020-11-29 20:15:50,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:15:50" (1/1) ... [2020-11-29 20:15:50,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:15:50,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:15:50,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:15:50,492 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:15:50,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:15:50,633 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:15:50,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:50 WrapperNode [2020-11-29 20:15:50,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:15:50,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:15:50,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:15:50,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:15:50,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:50" (1/1) ... [2020-11-29 20:15:50,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:50" (1/1) ... [2020-11-29 20:15:50,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:15:50,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:15:50,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:15:50,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:15:50,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:50" (1/1) ... [2020-11-29 20:15:50,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:50" (1/1) ... [2020-11-29 20:15:50,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:50" (1/1) ... [2020-11-29 20:15:50,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:50" (1/1) ... [2020-11-29 20:15:50,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:50" (1/1) ... [2020-11-29 20:15:50,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:50" (1/1) ... [2020-11-29 20:15:50,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:50" (1/1) ... [2020-11-29 20:15:50,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:15:50,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:15:50,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:15:50,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:15:50,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_909a262e-0311-4592-925c-f7292c711fae/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 20:15:50,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:15:50,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:15:50,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:15:50,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:15:52,181 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:15:52,184 INFO L298 CfgBuilder]: Removed 168 assume(true) statements. [2020-11-29 20:15:52,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:15:52 BoogieIcfgContainer [2020-11-29 20:15:52,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:15:52,189 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 20:15:52,190 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 20:15:52,193 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 20:15:52,194 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:15:52,194 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 08:15:50" (1/3) ... [2020-11-29 20:15:52,197 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55fbbbba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:15:52, skipping insertion in model container [2020-11-29 20:15:52,197 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:15:52,198 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:50" (2/3) ... [2020-11-29 20:15:52,198 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55fbbbba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:15:52, skipping insertion in model container [2020-11-29 20:15:52,199 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:15:52,199 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:15:52" (3/3) ... [2020-11-29 20:15:52,207 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product39.cil.c [2020-11-29 20:15:52,247 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 20:15:52,247 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 20:15:52,247 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 20:15:52,247 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:15:52,247 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:15:52,247 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 20:15:52,248 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:15:52,248 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 20:15:52,263 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 117 states. [2020-11-29 20:15:52,290 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2020-11-29 20:15:52,291 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:15:52,291 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:15:52,299 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:15:52,300 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:15:52,300 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 20:15:52,300 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 117 states. [2020-11-29 20:15:52,308 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2020-11-29 20:15:52,308 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:15:52,308 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:15:52,309 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:15:52,310 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:15:52,314 INFO L794 eck$LassoCheckResult]: Stem: 86#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(13);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string34.base, #t~string34.offset, 1);call write~init~int(80, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(117, #t~string34.base, 2 + #t~string34.offset, 1);call write~init~int(109, #t~string34.base, 3 + #t~string34.offset, 1);call write~init~int(112, #t~string34.base, 4 + #t~string34.offset, 1);call write~init~int(58, #t~string34.base, 5 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 6 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(110, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 2 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string38.base, #t~string38.offset, 1);call write~init~int(102, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(102, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 3 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string40.base, #t~string40.offset, 1);call write~init~int(32, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 2 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string42.base, #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 1 + #t~string42.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 4#L-1true havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 26#L582true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 32#L590true main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 117#L233true assume 0 != main_~tmp~0; 62#L204true ~methAndRunningLastTime~0 := 0; 5#L255true havoc test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_#t~nondet23, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 118#L266-1true [2020-11-29 20:15:52,315 INFO L796 eck$LassoCheckResult]: Loop: 118#L266-1true assume !false; 40#L309true assume test_~splverifierCounter~0 < 4; 3#L310true test_~tmp~2 := test_#t~nondet20;havoc test_#t~nondet20; 8#L318true assume !(0 != test_~tmp~2); 10#L318-1true test_~tmp___0~1 := test_#t~nondet21;havoc test_#t~nondet21; 41#L328true assume !(0 != test_~tmp___0~1); 43#L328-1true test_~tmp___2~0 := test_#t~nondet22;havoc test_#t~nondet22; 108#L338true assume 0 != test_~tmp___2~0; 78#L344-1true assume !(0 != ~pumpRunning~0); 103#L374true assume !(0 != ~systemActive~0); 22#L381true havoc __utac_acc__Specification2_spec__2_#t~ret18, __utac_acc__Specification2_spec__2_#t~ret19, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 15#L92-1true __utac_acc__Specification2_spec__2_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret18;havoc __utac_acc__Specification2_spec__2_#t~ret18; 7#L266true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 118#L266-1true [2020-11-29 20:15:52,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:52,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2020-11-29 20:15:52,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:52,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638550398] [2020-11-29 20:15:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:52,683 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:52,825 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:52,864 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:15:52,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:52,866 INFO L82 PathProgramCache]: Analyzing trace with hash 12881109, now seen corresponding path program 1 times [2020-11-29 20:15:52,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:52,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508597193] [2020-11-29 20:15:52,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:52,874 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:52,879 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:52,885 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:15:52,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:52,887 INFO L82 PathProgramCache]: Analyzing trace with hash 846177615, now seen corresponding path program 1 times [2020-11-29 20:15:52,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:52,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642000542] [2020-11-29 20:15:52,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:53,027 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 20:15:53,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642000542] [2020-11-29 20:15:53,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:53,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:15:53,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040806082] [2020-11-29 20:15:53,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:53,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:15:53,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:15:53,195 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 6 states. [2020-11-29 20:15:53,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:53,572 INFO L93 Difference]: Finished difference Result 274 states and 397 transitions. [2020-11-29 20:15:53,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:15:53,577 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 274 states and 397 transitions. [2020-11-29 20:15:53,594 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 175 [2020-11-29 20:15:53,609 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 274 states to 253 states and 376 transitions. [2020-11-29 20:15:53,610 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 253 [2020-11-29 20:15:53,615 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 253 [2020-11-29 20:15:53,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 253 states and 376 transitions. [2020-11-29 20:15:53,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:15:53,619 INFO L691 BuchiCegarLoop]: Abstraction has 253 states and 376 transitions. [2020-11-29 20:15:53,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states and 376 transitions. [2020-11-29 20:15:53,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 151. [2020-11-29 20:15:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-11-29 20:15:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 223 transitions. [2020-11-29 20:15:53,686 INFO L714 BuchiCegarLoop]: Abstraction has 151 states and 223 transitions. [2020-11-29 20:15:53,686 INFO L594 BuchiCegarLoop]: Abstraction has 151 states and 223 transitions. [2020-11-29 20:15:53,687 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 20:15:53,687 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 151 states and 223 transitions. [2020-11-29 20:15:53,694 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 104 [2020-11-29 20:15:53,696 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:15:53,697 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:15:53,698 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:15:53,698 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:15:53,698 INFO L794 eck$LassoCheckResult]: Stem: 508#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(13);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string34.base, #t~string34.offset, 1);call write~init~int(80, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(117, #t~string34.base, 2 + #t~string34.offset, 1);call write~init~int(109, #t~string34.base, 3 + #t~string34.offset, 1);call write~init~int(112, #t~string34.base, 4 + #t~string34.offset, 1);call write~init~int(58, #t~string34.base, 5 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 6 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(110, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 2 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string38.base, #t~string38.offset, 1);call write~init~int(102, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(102, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 3 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string40.base, #t~string40.offset, 1);call write~init~int(32, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 2 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string42.base, #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 1 + #t~string42.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 411#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 412#L582 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 449#L590 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 457#L233 assume 0 != main_~tmp~0; 498#L204 ~methAndRunningLastTime~0 := 0; 413#L255 havoc test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_#t~nondet23, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 414#L266-1 [2020-11-29 20:15:53,700 INFO L796 eck$LassoCheckResult]: Loop: 414#L266-1 assume !false; 470#L309 assume test_~splverifierCounter~0 < 4; 409#L310 test_~tmp~2 := test_#t~nondet20;havoc test_#t~nondet20; 410#L318 assume !(0 != test_~tmp~2); 421#L318-1 test_~tmp___0~1 := test_#t~nondet21;havoc test_#t~nondet21; 424#L328 assume !(0 != test_~tmp___0~1); 472#L328-1 test_~tmp___2~0 := test_#t~nondet22;havoc test_#t~nondet22; 474#L338 assume 0 != test_~tmp___2~0; 502#L344-1 assume !(0 != ~pumpRunning~0); 504#L374 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret25, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 512#L432 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret24, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 439#L406-1 assume !(0 == ~pumpRunning~0); 437#L381 havoc __utac_acc__Specification2_spec__2_#t~ret18, __utac_acc__Specification2_spec__2_#t~ret19, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 433#L92-1 __utac_acc__Specification2_spec__2_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret18;havoc __utac_acc__Specification2_spec__2_#t~ret18; 418#L266 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 414#L266-1 [2020-11-29 20:15:53,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:53,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2020-11-29 20:15:53,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:53,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537999133] [2020-11-29 20:15:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:53,787 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:53,837 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:53,855 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:15:53,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:53,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1348521868, now seen corresponding path program 1 times [2020-11-29 20:15:53,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:53,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791932807] [2020-11-29 20:15:53,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:53,885 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 20:15:53,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791932807] [2020-11-29 20:15:53,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:53,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:15:53,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287264694] [2020-11-29 20:15:53,886 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 20:15:53,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:53,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:15:53,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:15:53,887 INFO L87 Difference]: Start difference. First operand 151 states and 223 transitions. cyclomatic complexity: 75 Second operand 3 states. [2020-11-29 20:15:54,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:54,041 INFO L93 Difference]: Finished difference Result 193 states and 269 transitions. [2020-11-29 20:15:54,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:15:54,042 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 193 states and 269 transitions. [2020-11-29 20:15:54,045 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 136 [2020-11-29 20:15:54,047 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 193 states to 193 states and 269 transitions. [2020-11-29 20:15:54,047 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 193 [2020-11-29 20:15:54,048 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 193 [2020-11-29 20:15:54,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 193 states and 269 transitions. [2020-11-29 20:15:54,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:15:54,049 INFO L691 BuchiCegarLoop]: Abstraction has 193 states and 269 transitions. [2020-11-29 20:15:54,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states and 269 transitions. [2020-11-29 20:15:54,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2020-11-29 20:15:54,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-11-29 20:15:54,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 269 transitions. [2020-11-29 20:15:54,065 INFO L714 BuchiCegarLoop]: Abstraction has 193 states and 269 transitions. [2020-11-29 20:15:54,065 INFO L594 BuchiCegarLoop]: Abstraction has 193 states and 269 transitions. [2020-11-29 20:15:54,065 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 20:15:54,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 193 states and 269 transitions. [2020-11-29 20:15:54,068 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 136 [2020-11-29 20:15:54,068 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:15:54,069 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:15:54,071 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:15:54,071 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:15:54,071 INFO L794 eck$LassoCheckResult]: Stem: 864#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(13);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string34.base, #t~string34.offset, 1);call write~init~int(80, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(117, #t~string34.base, 2 + #t~string34.offset, 1);call write~init~int(109, #t~string34.base, 3 + #t~string34.offset, 1);call write~init~int(112, #t~string34.base, 4 + #t~string34.offset, 1);call write~init~int(58, #t~string34.base, 5 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 6 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(110, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 2 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string38.base, #t~string38.offset, 1);call write~init~int(102, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(102, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 3 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string40.base, #t~string40.offset, 1);call write~init~int(32, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 2 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string42.base, #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 1 + #t~string42.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 761#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 762#L582 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 803#L590 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 812#L233 assume 0 != main_~tmp~0; 853#L204 ~methAndRunningLastTime~0 := 0; 763#L255 havoc test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_#t~nondet23, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 764#L266-1 [2020-11-29 20:15:54,072 INFO L796 eck$LassoCheckResult]: Loop: 764#L266-1 assume !false; 825#L309 assume test_~splverifierCounter~0 < 4; 759#L310 test_~tmp~2 := test_#t~nondet20;havoc test_#t~nondet20; 760#L318 assume !(0 != test_~tmp~2); 771#L318-1 test_~tmp___0~1 := test_#t~nondet21;havoc test_#t~nondet21; 774#L328 assume !(0 != test_~tmp___0~1); 827#L328-1 test_~tmp___2~0 := test_#t~nondet22;havoc test_#t~nondet22; 829#L338 assume 0 != test_~tmp___2~0; 858#L344-1 assume !(0 != ~pumpRunning~0); 859#L374 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret25, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 871#L432 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret24, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 789#L406-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret43, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 790#L132-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 872#L137-1 isHighWaterLevel_#t~ret43 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret43;havoc isHighWaterLevel_#t~ret43; 851#L534-3 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~2 := 0; 852#L534-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 834#L540-1 processEnvironment__wrappee__highWaterSensor_#t~ret24 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~3 := processEnvironment__wrappee__highWaterSensor_#t~ret24;havoc processEnvironment__wrappee__highWaterSensor_#t~ret24; 835#L410-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~3); 792#L381 havoc __utac_acc__Specification2_spec__2_#t~ret18, __utac_acc__Specification2_spec__2_#t~ret19, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 783#L92-1 __utac_acc__Specification2_spec__2_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret18;havoc __utac_acc__Specification2_spec__2_#t~ret18; 768#L266 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 764#L266-1 [2020-11-29 20:15:54,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:54,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2020-11-29 20:15:54,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:54,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298517245] [2020-11-29 20:15:54,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:54,147 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:54,211 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:54,232 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:15:54,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:54,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1406211848, now seen corresponding path program 1 times [2020-11-29 20:15:54,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:54,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916399747] [2020-11-29 20:15:54,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:54,240 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:54,244 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:54,248 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:15:54,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:54,249 INFO L82 PathProgramCache]: Analyzing trace with hash 366929778, now seen corresponding path program 1 times [2020-11-29 20:15:54,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:54,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732313578] [2020-11-29 20:15:54,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:54,282 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:54,312 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:54,330 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:15:54,512 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-11-29 20:17:13,750 WARN L193 SmtUtils]: Spent 1.32 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2020-11-29 20:18:22,882 WARN L193 SmtUtils]: Spent 1.15 m on a formula simplification that was a NOOP. DAG size: 435 [2020-11-29 20:18:23,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 08:18:23 BoogieIcfgContainer [2020-11-29 20:18:23,459 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 20:18:23,459 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:18:23,460 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:18:23,460 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:18:23,461 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:15:52" (3/4) ... [2020-11-29 20:18:23,464 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 20:18:23,525 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_909a262e-0311-4592-925c-f7292c711fae/bin/uautomizer/witness.graphml [2020-11-29 20:18:23,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:18:23,528 INFO L168 Benchmark]: Toolchain (without parser) took 153480.64 ms. Allocated memory was 92.3 MB in the beginning and 163.6 MB in the end (delta: 71.3 MB). Free memory was 65.4 MB in the beginning and 128.3 MB in the end (delta: -63.0 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:18:23,529 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 92.3 MB. Free memory was 51.9 MB in the beginning and 51.9 MB in the end (delta: 56.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:18:23,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 586.82 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 65.2 MB in the beginning and 100.5 MB in the end (delta: -35.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:18:23,531 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.28 ms. Allocated memory is still 134.2 MB. Free memory was 100.5 MB in the beginning and 97.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:18:23,532 INFO L168 Benchmark]: Boogie Preprocessor took 80.07 ms. Allocated memory is still 134.2 MB. Free memory was 97.3 MB in the beginning and 94.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:18:23,532 INFO L168 Benchmark]: RCFGBuilder took 1384.71 ms. Allocated memory is still 134.2 MB. Free memory was 94.7 MB in the beginning and 72.1 MB in the end (delta: 22.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:18:23,534 INFO L168 Benchmark]: BuchiAutomizer took 151269.56 ms. Allocated memory was 134.2 MB in the beginning and 163.6 MB in the end (delta: 29.4 MB). Free memory was 72.1 MB in the beginning and 130.4 MB in the end (delta: -58.3 MB). Peak memory consumption was 61.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:18:23,534 INFO L168 Benchmark]: Witness Printer took 66.60 ms. Allocated memory is still 163.6 MB. Free memory was 130.4 MB in the beginning and 128.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:18:23,543 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 92.3 MB. Free memory was 51.9 MB in the beginning and 51.9 MB in the end (delta: 56.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 586.82 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 65.2 MB in the beginning and 100.5 MB in the end (delta: -35.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.28 ms. Allocated memory is still 134.2 MB. Free memory was 100.5 MB in the beginning and 97.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.07 ms. Allocated memory is still 134.2 MB. Free memory was 97.3 MB in the beginning and 94.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1384.71 ms. Allocated memory is still 134.2 MB. Free memory was 94.7 MB in the beginning and 72.1 MB in the end (delta: 22.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 151269.56 ms. Allocated memory was 134.2 MB in the beginning and 163.6 MB in the end (delta: 29.4 MB). Free memory was 72.1 MB in the beginning and 130.4 MB in the end (delta: -58.3 MB). Peak memory consumption was 61.5 MB. Max. memory is 16.1 GB. * Witness Printer took 66.60 ms. Allocated memory is still 163.6 MB. Free memory was 130.4 MB in the beginning and 128.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 193 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 151.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 150.3s. Construction of modules took 0.3s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 102 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 193 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 319 SDtfs, 889 SDslu, 731 SDs, 0 SdLazy, 69 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 308]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=32416} State at position 1 is {NULL=0, NULL=0, NULL=32430, NULL=0, NULL=32416, NULL=0, NULL=32437, NULL=32440, methaneLevelCritical=0, tmp=0, NULL=0, NULL=32436, NULL=0, tmp___1=0, retValue_acc=0, NULL=0, NULL=32427, cleanupTimeShifts=4, NULL=32425, NULL=32431, waterLevel=1, NULL=0, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, tmp=1, NULL=32417, NULL=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@718dccfb=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7315223e=71, \result=1, NULL=0, NULL=0, NULL=32423, NULL=0, NULL=0, NULL=0, NULL=0, tmp=1, NULL=32421, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@628791c5=0, methAndRunningLastTime=0, NULL=32441, NULL=32429, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2fda40d7=0, head=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1bdcb887=0, NULL=0, NULL=32422, retValue_acc=0, NULL=0, retValue_acc=0, NULL=32435, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ee6f808=0, NULL=32428, NULL=32438, NULL=32420, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@51bc125d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6bb9302a=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=32424, tmp=0, NULL=32426, NULL=0, systemActive=1, NULL=0, NULL=0, NULL=32433, \result=0, NULL=0, NULL=32418, \result=0, NULL=32443, NULL=0, tmp___0=0, NULL=32444, retValue_acc=1, NULL=32419, tmp___2=71, splverifierCounter=0, NULL=0, \result=0, NULL=32434, NULL=32439, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@554af4a=0, NULL=32432, NULL=32442, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c347fbd=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L143] int cleanupTimeShifts = 4; [L249] int methAndRunningLastTime ; [L367] int pumpRunning = 0; [L368] int systemActive = 1; [L764] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L224] int retValue_acc ; [L225] int tmp ; [L586] int retValue_acc ; [L589] retValue_acc = 1 [L590] return (retValue_acc); [L231] tmp = valid_product() [L233] COND TRUE \read(tmp) [L254] methAndRunningLastTime = 0 [L299] int splverifierCounter ; [L300] int tmp ; [L301] int tmp___0 ; [L302] int tmp___1 ; [L303] int tmp___2 ; [L306] splverifierCounter = 0 Loop: [L308] COND TRUE 1 [L310] COND TRUE splverifierCounter < 4 [L316] tmp = __VERIFIER_nondet_int() [L318] COND FALSE !(\read(tmp)) [L326] tmp___0 = __VERIFIER_nondet_int() [L328] COND FALSE !(\read(tmp___0)) [L336] tmp___2 = __VERIFIER_nondet_int() [L338] COND TRUE \read(tmp___2) [L374] COND FALSE !(\read(pumpRunning)) [L381] COND TRUE \read(systemActive) [L429] int tmp ; [L432] COND FALSE !(\read(pumpRunning)) [L403] int tmp ; [L406] COND TRUE ! pumpRunning [L526] int retValue_acc ; [L527] int tmp ; [L528] int tmp___0 ; [L129] int retValue_acc ; [L132] COND TRUE waterLevel < 2 [L133] retValue_acc = 1 [L134] return (retValue_acc); [L532] tmp = isHighWaterSensorDry() [L534] COND TRUE \read(tmp) [L535] tmp___0 = 0 [L539] retValue_acc = tmp___0 [L540] return (retValue_acc); [L408] tmp = isHighWaterLevel() [L410] COND FALSE !(\read(tmp)) [L259] int tmp ; [L260] int tmp___0 ; [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L264] tmp = isMethaneLevelCritical() [L266] COND FALSE !(\read(tmp)) [L282] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...