./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product43.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_638a4773-9ec0-4166-bedc-891b59c62906/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_638a4773-9ec0-4166-bedc-891b59c62906/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_638a4773-9ec0-4166-bedc-891b59c62906/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_638a4773-9ec0-4166-bedc-891b59c62906/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product43.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_638a4773-9ec0-4166-bedc-891b59c62906/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_638a4773-9ec0-4166-bedc-891b59c62906/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 ae87ed11769153d118b606184b0208d26c3c2750 ................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 22:12:30,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:12:30,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:12:30,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:12:30,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:12:30,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:12:30,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:12:30,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:12:30,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:12:30,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:12:30,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:12:30,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:12:30,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:12:30,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:12:30,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:12:30,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:12:30,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:12:30,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:12:30,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:12:30,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:12:30,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:12:30,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:12:30,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:12:30,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:12:30,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:12:30,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:12:30,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:12:30,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:12:30,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:12:30,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:12:30,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:12:30,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:12:30,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:12:30,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:12:30,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:12:30,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:12:30,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:12:30,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:12:30,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:12:30,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:12:30,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:12:30,568 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_638a4773-9ec0-4166-bedc-891b59c62906/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 22:12:30,608 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:12:30,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:12:30,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:12:30,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:12:30,611 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:12:30,611 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 22:12:30,611 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 22:12:30,611 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 22:12:30,612 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 22:12:30,612 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 22:12:30,613 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 22:12:30,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:12:30,613 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:12:30,614 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:12:30,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:12:30,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:12:30,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:12:30,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 22:12:30,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 22:12:30,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 22:12:30,615 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:12:30,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:12:30,616 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 22:12:30,616 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:12:30,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 22:12:30,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:12:30,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:12:30,617 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 22:12:30,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:12:30,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:12:30,619 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:12:30,619 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 22:12:30,621 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 22:12:30,621 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_638a4773-9ec0-4166-bedc-891b59c62906/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_638a4773-9ec0-4166-bedc-891b59c62906/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae87ed11769153d118b606184b0208d26c3c2750 [2020-11-29 22:12:30,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:12:30,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:12:30,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:12:30,957 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:12:30,960 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:12:30,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_638a4773-9ec0-4166-bedc-891b59c62906/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product43.cil.c [2020-11-29 22:12:31,032 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_638a4773-9ec0-4166-bedc-891b59c62906/bin/uautomizer/data/61f0f4b21/869af35d34424054bc2d51ee49048928/FLAG2bc2de32e [2020-11-29 22:12:31,533 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:12:31,540 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_638a4773-9ec0-4166-bedc-891b59c62906/sv-benchmarks/c/product-lines/minepump_spec1_product43.cil.c [2020-11-29 22:12:31,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_638a4773-9ec0-4166-bedc-891b59c62906/bin/uautomizer/data/61f0f4b21/869af35d34424054bc2d51ee49048928/FLAG2bc2de32e [2020-11-29 22:12:32,047 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_638a4773-9ec0-4166-bedc-891b59c62906/bin/uautomizer/data/61f0f4b21/869af35d34424054bc2d51ee49048928 [2020-11-29 22:12:32,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:12:32,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:12:32,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:12:32,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:12:32,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:12:32,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:12:32" (1/1) ... [2020-11-29 22:12:32,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dfe91d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:32, skipping insertion in model container [2020-11-29 22:12:32,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:12:32" (1/1) ... [2020-11-29 22:12:32,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:12:32,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:12:32,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:12:32,401 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:12:32,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:12:32,520 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:12:32,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:32 WrapperNode [2020-11-29 22:12:32,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:12:32,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:12:32,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:12:32,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:12:32,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:32" (1/1) ... [2020-11-29 22:12:32,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:32" (1/1) ... [2020-11-29 22:12:32,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:12:32,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:12:32,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:12:32,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:12:32,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:32" (1/1) ... [2020-11-29 22:12:32,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:32" (1/1) ... [2020-11-29 22:12:32,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:32" (1/1) ... [2020-11-29 22:12:32,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:32" (1/1) ... [2020-11-29 22:12:32,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:32" (1/1) ... [2020-11-29 22:12:32,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:32" (1/1) ... [2020-11-29 22:12:32,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:32" (1/1) ... [2020-11-29 22:12:32,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:12:32,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:12:32,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:12:32,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:12:32,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_638a4773-9ec0-4166-bedc-891b59c62906/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 22:12:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:12:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:12:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:12:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:12:33,632 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:12:33,636 INFO L298 CfgBuilder]: Removed 124 assume(true) statements. [2020-11-29 22:12:33,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:12:33 BoogieIcfgContainer [2020-11-29 22:12:33,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:12:33,641 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 22:12:33,641 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 22:12:33,645 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 22:12:33,645 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:12:33,646 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 10:12:32" (1/3) ... [2020-11-29 22:12:33,647 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2dd89634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:12:33, skipping insertion in model container [2020-11-29 22:12:33,647 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:12:33,648 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:12:32" (2/3) ... [2020-11-29 22:12:33,648 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2dd89634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:12:33, skipping insertion in model container [2020-11-29 22:12:33,648 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:12:33,649 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:12:33" (3/3) ... [2020-11-29 22:12:33,650 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product43.cil.c [2020-11-29 22:12:33,706 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 22:12:33,706 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 22:12:33,706 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 22:12:33,706 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:12:33,706 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:12:33,706 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 22:12:33,707 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:12:33,707 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 22:12:33,722 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states. [2020-11-29 22:12:33,744 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 57 [2020-11-29 22:12:33,744 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:12:33,744 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:12:33,752 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:12:33,752 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:33,752 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 22:12:33,752 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states. [2020-11-29 22:12:33,758 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 57 [2020-11-29 22:12:33,758 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:12:33,759 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:12:33,759 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:12:33,760 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:33,764 INFO L794 eck$LassoCheckResult]: Stem: 49#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~string21.base, #t~string21.offset := #Ultimate.allocOnStack(13);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string27.base, #t~string27.offset, 1);call write~init~int(80, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(117, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(109, #t~string27.base, 3 + #t~string27.offset, 1);call write~init~int(112, #t~string27.base, 4 + #t~string27.offset, 1);call write~init~int(58, #t~string27.base, 5 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 6 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(110, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string33.base, #t~string33.offset, 1);call write~init~int(32, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string35.base, #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 1 + #t~string35.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 20#L-1true havoc main_#res;havoc main_#t~ret43, main_~retValue_acc~6, main_~tmp~5;havoc main_~retValue_acc~6;havoc main_~tmp~5; 25#L925true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 59#L933true main_#t~ret43 := valid_product_#res;main_~tmp~5 := main_#t~ret43;havoc main_#t~ret43; 47#L523true assume 0 != main_~tmp~5; 29#L497true havoc test_#t~nondet37, test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 7#L420-1true [2020-11-29 22:12:33,765 INFO L796 eck$LassoCheckResult]: Loop: 7#L420-1true assume !false; 34#L347true assume test_~splverifierCounter~0 < 4; 50#L348true test_~tmp~3 := test_#t~nondet37;havoc test_#t~nondet37; 64#L356true assume !(0 != test_~tmp~3); 65#L356-1true test_~tmp___0~1 := test_#t~nondet38;havoc test_#t~nondet38; 42#L366true assume !(0 != test_~tmp___0~1); 44#L366-1true test_~tmp___2~0 := test_#t~nondet39;havoc test_#t~nondet39; 9#L376true assume 0 != test_~tmp___2~0; 78#L382-1true assume !(0 != ~pumpRunning~0); 14#L157true assume !(0 != ~systemActive~0); 39#L164true havoc __utac_acc__Specification1_spec__1_#t~ret41, __utac_acc__Specification1_spec__1_#t~ret42, __utac_acc__Specification1_spec__1_~tmp~4, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~4;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;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; 43#L92-1true __utac_acc__Specification1_spec__1_#t~ret41 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~4 := __utac_acc__Specification1_spec__1_#t~ret41;havoc __utac_acc__Specification1_spec__1_#t~ret41; 4#L420true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~4); 7#L420-1true [2020-11-29 22:12:33,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:33,770 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-29 22:12:33,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:33,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128277152] [2020-11-29 22:12:33,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:12:34,047 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:12:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:12:34,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:12:34,261 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:12:34,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:34,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1672602483, now seen corresponding path program 1 times [2020-11-29 22:12:34,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:34,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365894912] [2020-11-29 22:12:34,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:12:34,277 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:12:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:12:34,285 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:12:34,291 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:12:34,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:34,293 INFO L82 PathProgramCache]: Analyzing trace with hash 41676455, now seen corresponding path program 1 times [2020-11-29 22:12:34,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:34,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531086388] [2020-11-29 22:12:34,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:34,452 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 22:12:34,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531086388] [2020-11-29 22:12:34,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:34,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:12:34,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996451902] [2020-11-29 22:12:34,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:34,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:12:34,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:12:34,589 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 6 states. [2020-11-29 22:12:34,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:34,937 INFO L93 Difference]: Finished difference Result 216 states and 300 transitions. [2020-11-29 22:12:34,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 22:12:34,941 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 216 states and 300 transitions. [2020-11-29 22:12:34,958 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 137 [2020-11-29 22:12:34,967 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 216 states to 195 states and 279 transitions. [2020-11-29 22:12:34,974 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 195 [2020-11-29 22:12:34,975 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 195 [2020-11-29 22:12:34,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 195 states and 279 transitions. [2020-11-29 22:12:34,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:12:34,980 INFO L691 BuchiCegarLoop]: Abstraction has 195 states and 279 transitions. [2020-11-29 22:12:34,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states and 279 transitions. [2020-11-29 22:12:35,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 120. [2020-11-29 22:12:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-29 22:12:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 171 transitions. [2020-11-29 22:12:35,024 INFO L714 BuchiCegarLoop]: Abstraction has 120 states and 171 transitions. [2020-11-29 22:12:35,025 INFO L594 BuchiCegarLoop]: Abstraction has 120 states and 171 transitions. [2020-11-29 22:12:35,025 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 22:12:35,025 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states and 171 transitions. [2020-11-29 22:12:35,032 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 84 [2020-11-29 22:12:35,033 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:12:35,033 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:12:35,034 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:12:35,034 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:35,034 INFO L794 eck$LassoCheckResult]: Stem: 379#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~string21.base, #t~string21.offset := #Ultimate.allocOnStack(13);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string27.base, #t~string27.offset, 1);call write~init~int(80, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(117, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(109, #t~string27.base, 3 + #t~string27.offset, 1);call write~init~int(112, #t~string27.base, 4 + #t~string27.offset, 1);call write~init~int(58, #t~string27.base, 5 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 6 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(110, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string33.base, #t~string33.offset, 1);call write~init~int(32, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string35.base, #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 1 + #t~string35.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 350#L-1 havoc main_#res;havoc main_#t~ret43, main_~retValue_acc~6, main_~tmp~5;havoc main_~retValue_acc~6;havoc main_~tmp~5; 351#L925 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 360#L933 main_#t~ret43 := valid_product_#res;main_~tmp~5 := main_#t~ret43;havoc main_#t~ret43; 378#L523 assume 0 != main_~tmp~5; 364#L497 havoc test_#t~nondet37, test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 324#L420-1 [2020-11-29 22:12:35,034 INFO L796 eck$LassoCheckResult]: Loop: 324#L420-1 assume !false; 332#L347 assume test_~splverifierCounter~0 < 4; 368#L348 test_~tmp~3 := test_#t~nondet37;havoc test_#t~nondet37; 380#L356 assume !(0 != test_~tmp~3); 392#L356-1 test_~tmp___0~1 := test_#t~nondet38;havoc test_#t~nondet38; 374#L366 assume !(0 != test_~tmp___0~1); 375#L366-1 test_~tmp___2~0 := test_#t~nondet39;havoc test_#t~nondet39; 335#L376 assume 0 != test_~tmp___2~0; 336#L382-1 assume !(0 != ~pumpRunning~0); 344#L157 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret17, processEnvironment_~tmp~0;havoc processEnvironment_~tmp~0; 345#L189 assume !(0 == ~pumpRunning~0); 362#L164 havoc __utac_acc__Specification1_spec__1_#t~ret41, __utac_acc__Specification1_spec__1_#t~ret42, __utac_acc__Specification1_spec__1_~tmp~4, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~4;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;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; 371#L92-1 __utac_acc__Specification1_spec__1_#t~ret41 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~4 := __utac_acc__Specification1_spec__1_#t~ret41;havoc __utac_acc__Specification1_spec__1_#t~ret41; 323#L420 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~4); 324#L420-1 [2020-11-29 22:12:35,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:35,036 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-29 22:12:35,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:35,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352341234] [2020-11-29 22:12:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:12:35,097 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:12:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:12:35,156 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:12:35,187 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:12:35,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:35,188 INFO L82 PathProgramCache]: Analyzing trace with hash -352838723, now seen corresponding path program 1 times [2020-11-29 22:12:35,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:35,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711592561] [2020-11-29 22:12:35,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:12:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:12:35,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711592561] [2020-11-29 22:12:35,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:12:35,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:12:35,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284261886] [2020-11-29 22:12:35,208 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 22:12:35,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:12:35,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 22:12:35,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 22:12:35,209 INFO L87 Difference]: Start difference. First operand 120 states and 171 transitions. cyclomatic complexity: 54 Second operand 3 states. [2020-11-29 22:12:35,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:12:35,310 INFO L93 Difference]: Finished difference Result 159 states and 214 transitions. [2020-11-29 22:12:35,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 22:12:35,311 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 214 transitions. [2020-11-29 22:12:35,314 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 114 [2020-11-29 22:12:35,316 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 159 states and 214 transitions. [2020-11-29 22:12:35,316 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 159 [2020-11-29 22:12:35,317 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 159 [2020-11-29 22:12:35,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 214 transitions. [2020-11-29 22:12:35,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:12:35,318 INFO L691 BuchiCegarLoop]: Abstraction has 159 states and 214 transitions. [2020-11-29 22:12:35,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 214 transitions. [2020-11-29 22:12:35,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-11-29 22:12:35,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-11-29 22:12:35,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 214 transitions. [2020-11-29 22:12:35,335 INFO L714 BuchiCegarLoop]: Abstraction has 159 states and 214 transitions. [2020-11-29 22:12:35,336 INFO L594 BuchiCegarLoop]: Abstraction has 159 states and 214 transitions. [2020-11-29 22:12:35,336 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 22:12:35,336 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 159 states and 214 transitions. [2020-11-29 22:12:35,337 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 114 [2020-11-29 22:12:35,338 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:12:35,338 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:12:35,339 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:12:35,339 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:12:35,339 INFO L794 eck$LassoCheckResult]: Stem: 678#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~string21.base, #t~string21.offset := #Ultimate.allocOnStack(13);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string27.base, #t~string27.offset, 1);call write~init~int(80, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(117, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(109, #t~string27.base, 3 + #t~string27.offset, 1);call write~init~int(112, #t~string27.base, 4 + #t~string27.offset, 1);call write~init~int(58, #t~string27.base, 5 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 6 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(110, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string33.base, #t~string33.offset, 1);call write~init~int(32, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string35.base, #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 1 + #t~string35.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 643#L-1 havoc main_#res;havoc main_#t~ret43, main_~retValue_acc~6, main_~tmp~5;havoc main_~retValue_acc~6;havoc main_~tmp~5; 644#L925 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 651#L933 main_#t~ret43 := valid_product_#res;main_~tmp~5 := main_#t~ret43;havoc main_#t~ret43; 677#L523 assume 0 != main_~tmp~5; 659#L497 havoc test_#t~nondet37, test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 616#L420-1 [2020-11-29 22:12:35,339 INFO L796 eck$LassoCheckResult]: Loop: 616#L420-1 assume !false; 617#L347 assume test_~splverifierCounter~0 < 4; 661#L348 test_~tmp~3 := test_#t~nondet37;havoc test_#t~nondet37; 765#L356 assume !(0 != test_~tmp~3); 763#L356-1 test_~tmp___0~1 := test_#t~nondet38;havoc test_#t~nondet38; 762#L366 assume !(0 != test_~tmp___0~1); 673#L366-1 test_~tmp___2~0 := test_#t~nondet39;havoc test_#t~nondet39; 620#L376 assume 0 != test_~tmp___2~0; 621#L382-1 assume !(0 != ~pumpRunning~0); 630#L157 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret17, processEnvironment_~tmp~0;havoc processEnvironment_~tmp~0; 631#L189 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret36, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 691#L132 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 692#L137 isHighWaterLevel_#t~ret36 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret36;havoc isHighWaterLevel_#t~ret36; 701#L309 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 702#L309-2 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 686#L315 processEnvironment_#t~ret17 := isHighWaterLevel_#res;processEnvironment_~tmp~0 := processEnvironment_#t~ret17;havoc processEnvironment_#t~ret17; 652#L193 assume !(0 != processEnvironment_~tmp~0); 653#L164 havoc __utac_acc__Specification1_spec__1_#t~ret41, __utac_acc__Specification1_spec__1_#t~ret42, __utac_acc__Specification1_spec__1_~tmp~4, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~4;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;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; 749#L92-1 __utac_acc__Specification1_spec__1_#t~ret41 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~4 := __utac_acc__Specification1_spec__1_#t~ret41;havoc __utac_acc__Specification1_spec__1_#t~ret41; 746#L420 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~4); 616#L420-1 [2020-11-29 22:12:35,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:35,340 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-29 22:12:35,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:35,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074517241] [2020-11-29 22:12:35,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:12:35,399 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:12:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:12:35,472 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:12:35,495 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:12:35,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:35,496 INFO L82 PathProgramCache]: Analyzing trace with hash -539212887, now seen corresponding path program 1 times [2020-11-29 22:12:35,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:35,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351801338] [2020-11-29 22:12:35,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:12:35,505 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:12:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:12:35,516 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:12:35,519 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:12:35,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:12:35,520 INFO L82 PathProgramCache]: Analyzing trace with hash -524500913, now seen corresponding path program 1 times [2020-11-29 22:12:35,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:12:35,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204062662] [2020-11-29 22:12:35,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:12:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:12:35,575 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:12:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:12:35,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:12:35,629 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:12:35,790 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-11-29 22:13:43,592 WARN L193 SmtUtils]: Spent 1.13 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-29 22:14:30,848 WARN L193 SmtUtils]: Spent 47.25 s on a formula simplification that was a NOOP. DAG size: 433 [2020-11-29 22:14:31,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 10:14:31 BoogieIcfgContainer [2020-11-29 22:14:31,027 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 22:14:31,028 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:14:31,028 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:14:31,028 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:14:31,028 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:12:33" (3/4) ... [2020-11-29 22:14:31,030 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 22:14:31,080 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_638a4773-9ec0-4166-bedc-891b59c62906/bin/uautomizer/witness.graphml [2020-11-29 22:14:31,080 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:14:31,082 INFO L168 Benchmark]: Toolchain (without parser) took 119030.93 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 49.1 MB in the beginning and 91.7 MB in the end (delta: -42.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:14:31,083 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 86.0 MB. Free memory was 66.4 MB in the beginning and 66.3 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:14:31,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 470.10 ms. Allocated memory is still 86.0 MB. Free memory was 48.9 MB in the beginning and 52.3 MB in the end (delta: -3.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:14:31,084 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.29 ms. Allocated memory is still 86.0 MB. Free memory was 52.3 MB in the beginning and 49.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:14:31,085 INFO L168 Benchmark]: Boogie Preprocessor took 60.07 ms. Allocated memory is still 86.0 MB. Free memory was 49.2 MB in the beginning and 47.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:14:31,086 INFO L168 Benchmark]: RCFGBuilder took 961.86 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 47.1 MB in the beginning and 77.3 MB in the end (delta: -30.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:14:31,086 INFO L168 Benchmark]: BuchiAutomizer took 117386.55 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 77.3 MB in the beginning and 93.8 MB in the end (delta: -16.5 MB). Peak memory consumption was 80.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:14:31,087 INFO L168 Benchmark]: Witness Printer took 52.90 ms. Allocated memory is still 125.8 MB. Free memory was 93.8 MB in the beginning and 91.7 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:14:31,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 86.0 MB. Free memory was 66.4 MB in the beginning and 66.3 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 470.10 ms. Allocated memory is still 86.0 MB. Free memory was 48.9 MB in the beginning and 52.3 MB in the end (delta: -3.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.29 ms. Allocated memory is still 86.0 MB. Free memory was 52.3 MB in the beginning and 49.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.07 ms. Allocated memory is still 86.0 MB. Free memory was 49.2 MB in the beginning and 47.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 961.86 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 47.1 MB in the beginning and 77.3 MB in the end (delta: -30.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 117386.55 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 77.3 MB in the beginning and 93.8 MB in the end (delta: -16.5 MB). Peak memory consumption was 80.1 MB. Max. memory is 16.1 GB. * Witness Printer took 52.90 ms. Allocated memory is still 125.8 MB. Free memory was 93.8 MB in the beginning and 91.7 MB in the end (delta: 2.1 MB). There was no memory consumed. 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 159 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 117.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 116.6s. Construction of modules took 0.2s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 75 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 159 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 227 SDtfs, 537 SDslu, 626 SDs, 0 SdLazy, 64 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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: 346]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, retValue_acc=0, NULL=0, NULL=0, NULL=31484, NULL=0, NULL=1, NULL=31491, retValue_acc=0, NULL=31497, NULL=31483, NULL=31496, methaneLevelCritical=0, NULL=31487, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@79a3cf1a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a347fb8=0, retValue_acc=1, tmp___0=0, retValue_acc=0, tmp=0, NULL=0, NULL=31503, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@41e6b286=0, NULL=0, tmp___1=0, NULL=31506, NULL=31504, tmp___0=0, NULL=0, NULL=0, NULL=0, cleanupTimeShifts=4, NULL=31505, NULL=31500, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c4d9a12=60, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@9fcbc85=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72d5d7c0=0, NULL=31489, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4964b1bb=0, NULL=0, systemActive=1, waterLevel=1, NULL=0, NULL=0, NULL=31485, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d826a13=0, \result=0, NULL=0, NULL=31488, \result=1, head=0, pumpRunning=0, \result=0, NULL=31486, NULL=31499, NULL=31495, retValue_acc=1, NULL=0, tmp=0, NULL=0, NULL=0, tmp=1, NULL=31502, \result=1, NULL=31493, NULL=0, NULL=0, NULL=31490, NULL=0, NULL=0, tmp=1, NULL=31479, NULL=0, tmp___2=60, NULL=0, tmp___0=0, splverifierCounter=0, NULL=0, \result=0, NULL=31482, NULL=31480, NULL=31492, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a997a57=0, tmp=0, head=0, NULL=31498, NULL=31481, NULL=0, NULL=31501, NULL=31494} - 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; [L149] int pumpRunning = 0; [L150] int systemActive = 1; [L438] int cleanupTimeShifts = 4; [L706] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L514] int retValue_acc ; [L515] int tmp ; [L929] int retValue_acc ; [L932] retValue_acc = 1 [L933] return (retValue_acc); [L521] tmp = valid_product() [L523] COND TRUE \read(tmp) [L337] int splverifierCounter ; [L338] int tmp ; [L339] int tmp___0 ; [L340] int tmp___1 ; [L341] int tmp___2 ; [L344] splverifierCounter = 0 Loop: [L346] COND TRUE 1 [L348] COND TRUE splverifierCounter < 4 [L354] tmp = __VERIFIER_nondet_int() [L356] COND FALSE !(\read(tmp)) [L364] tmp___0 = __VERIFIER_nondet_int() [L366] COND FALSE !(\read(tmp___0)) [L374] tmp___2 = __VERIFIER_nondet_int() [L376] COND TRUE \read(tmp___2) [L157] COND FALSE !(\read(pumpRunning)) [L164] COND TRUE \read(systemActive) [L186] int tmp ; [L189] COND TRUE ! pumpRunning [L301] int retValue_acc ; [L302] int tmp ; [L303] int tmp___0 ; [L129] int retValue_acc ; [L132] COND TRUE waterLevel < 2 [L133] retValue_acc = 1 [L134] return (retValue_acc); [L307] tmp = isHighWaterSensorDry() [L309] COND TRUE \read(tmp) [L310] tmp___0 = 0 [L314] retValue_acc = tmp___0 [L315] return (retValue_acc); [L191] tmp = isHighWaterLevel() [L193] COND FALSE !(\read(tmp)) [L413] int tmp ; [L414] int tmp___0 ; [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L418] tmp = isMethaneLevelCritical() [L420] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...