./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_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_be0b3ac5-0c6d-4cb6-99ad-db4b4ba140a3/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_be0b3ac5-0c6d-4cb6-99ad-db4b4ba140a3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_be0b3ac5-0c6d-4cb6-99ad-db4b4ba140a3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_be0b3ac5-0c6d-4cb6-99ad-db4b4ba140a3/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product39.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_be0b3ac5-0c6d-4cb6-99ad-db4b4ba140a3/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_be0b3ac5-0c6d-4cb6-99ad-db4b4ba140a3/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 5381b58f81d44aa70d19c6d31d0ce960b58130fb .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:06:17,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:06:17,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:06:17,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:06:17,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:06:17,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:06:17,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:06:17,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:06:17,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:06:17,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:06:17,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:06:17,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:06:17,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:06:17,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:06:17,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:06:17,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:06:17,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:06:17,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:06:17,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:06:17,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:06:17,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:06:17,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:06:17,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:06:17,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:06:17,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:06:17,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:06:17,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:06:17,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:06:17,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:06:17,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:06:17,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:06:17,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:06:17,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:06:17,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:06:17,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:06:17,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:06:17,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:06:17,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:06:17,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:06:17,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:06:17,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:06:17,444 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_be0b3ac5-0c6d-4cb6-99ad-db4b4ba140a3/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 19:06:17,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:06:17,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:06:17,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:06:17,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:06:17,499 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:06:17,499 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:06:17,499 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:06:17,499 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:06:17,500 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:06:17,500 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:06:17,501 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:06:17,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:06:17,501 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:06:17,501 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:06:17,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:06:17,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:06:17,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:06:17,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:06:17,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:06:17,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:06:17,503 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:06:17,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:06:17,503 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:06:17,503 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:06:17,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:06:17,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:06:17,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:06:17,504 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:06:17,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:06:17,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:06:17,506 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:06:17,506 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:06:17,507 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:06:17,507 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_be0b3ac5-0c6d-4cb6-99ad-db4b4ba140a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_be0b3ac5-0c6d-4cb6-99ad-db4b4ba140a3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5381b58f81d44aa70d19c6d31d0ce960b58130fb [2020-11-29 19:06:17,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:06:17,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:06:17,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:06:17,816 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:06:17,817 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:06:17,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_be0b3ac5-0c6d-4cb6-99ad-db4b4ba140a3/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product39.cil.c [2020-11-29 19:06:17,890 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_be0b3ac5-0c6d-4cb6-99ad-db4b4ba140a3/bin/uautomizer/data/f1f7ef528/2e1bac78e9124b0c82aa7dd2a9977a14/FLAG594eec544 [2020-11-29 19:06:18,413 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:06:18,413 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_be0b3ac5-0c6d-4cb6-99ad-db4b4ba140a3/sv-benchmarks/c/product-lines/minepump_spec3_product39.cil.c [2020-11-29 19:06:18,434 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_be0b3ac5-0c6d-4cb6-99ad-db4b4ba140a3/bin/uautomizer/data/f1f7ef528/2e1bac78e9124b0c82aa7dd2a9977a14/FLAG594eec544 [2020-11-29 19:06:18,726 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_be0b3ac5-0c6d-4cb6-99ad-db4b4ba140a3/bin/uautomizer/data/f1f7ef528/2e1bac78e9124b0c82aa7dd2a9977a14 [2020-11-29 19:06:18,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:06:18,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:06:18,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:06:18,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:06:18,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:06:18,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:06:18" (1/1) ... [2020-11-29 19:06:18,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3599df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:18, skipping insertion in model container [2020-11-29 19:06:18,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:06:18" (1/1) ... [2020-11-29 19:06:18,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:06:18,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:06:19,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:06:19,098 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:06:19,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:06:19,214 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:06:19,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:19 WrapperNode [2020-11-29 19:06:19,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:06:19,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:06:19,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:06:19,216 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:06:19,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:19" (1/1) ... [2020-11-29 19:06:19,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:19" (1/1) ... [2020-11-29 19:06:19,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:06:19,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:06:19,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:06:19,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:06:19,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:19" (1/1) ... [2020-11-29 19:06:19,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:19" (1/1) ... [2020-11-29 19:06:19,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:19" (1/1) ... [2020-11-29 19:06:19,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:19" (1/1) ... [2020-11-29 19:06:19,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:19" (1/1) ... [2020-11-29 19:06:19,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:19" (1/1) ... [2020-11-29 19:06:19,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:19" (1/1) ... [2020-11-29 19:06:19,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:06:19,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:06:19,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:06:19,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:06:19,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be0b3ac5-0c6d-4cb6-99ad-db4b4ba140a3/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 19:06:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:06:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:06:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:06:19,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:06:20,590 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:06:20,592 INFO L298 CfgBuilder]: Removed 172 assume(true) statements. [2020-11-29 19:06:20,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:06:20 BoogieIcfgContainer [2020-11-29 19:06:20,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:06:20,596 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:06:20,596 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:06:20,600 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:06:20,601 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:06:20,601 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:06:18" (1/3) ... [2020-11-29 19:06:20,602 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@17360377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:06:20, skipping insertion in model container [2020-11-29 19:06:20,602 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:06:20,603 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:19" (2/3) ... [2020-11-29 19:06:20,604 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@17360377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:06:20, skipping insertion in model container [2020-11-29 19:06:20,604 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:06:20,604 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:06:20" (3/3) ... [2020-11-29 19:06:20,608 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product39.cil.c [2020-11-29 19:06:20,662 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:06:20,662 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:06:20,662 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:06:20,663 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:06:20,663 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:06:20,663 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:06:20,663 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:06:20,663 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:06:20,684 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 119 states. [2020-11-29 19:06:20,709 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2020-11-29 19:06:20,710 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:06:20,710 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:06:20,718 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:06:20,718 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:06:20,718 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:06:20,719 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 119 states. [2020-11-29 19:06:20,726 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2020-11-29 19:06:20,727 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:06:20,727 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:06:20,728 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:06:20,728 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:06:20,733 INFO L794 eck$LassoCheckResult]: Stem: 88#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);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(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);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~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 7#L-1true havoc main_#res;havoc main_#t~ret77, main_~retValue_acc~11, main_~tmp~7;havoc main_~retValue_acc~11;havoc main_~tmp~7; 36#L67true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 45#L75true main_#t~ret77 := valid_product_#res;main_~tmp~7 := main_#t~ret77;havoc main_#t~ret77; 61#L906true assume 0 != main_~tmp~7; 101#L883true havoc test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, 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; 119#L935-1true [2020-11-29 19:06:20,734 INFO L796 eck$LassoCheckResult]: Loop: 119#L935-1true assume !false; 100#L393true assume test_~splverifierCounter~0 < 4; 62#L394true test_~tmp~3 := test_#t~nondet38;havoc test_#t~nondet38; 65#L402true assume !(0 != test_~tmp~3); 68#L402-1true test_~tmp___0~1 := test_#t~nondet39;havoc test_#t~nondet39; 118#L412true assume !(0 != test_~tmp___0~1); 120#L412-1true test_~tmp___2~0 := test_#t~nondet40;havoc test_#t~nondet40; 35#L422true assume 0 != test_~tmp___2~0; 17#L428-1true assume !(0 != ~pumpRunning~0); 111#L195true assume !(0 != ~systemActive~0); 32#L202true havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 47#L130-1true __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 16#L929true assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 119#L935-1true [2020-11-29 19:06:20,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:20,740 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-29 19:06:20,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:20,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136141752] [2020-11-29 19:06:20,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:21,028 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:21,164 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:21,227 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:06:21,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:21,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1671401922, now seen corresponding path program 1 times [2020-11-29 19:06:21,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:21,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212730266] [2020-11-29 19:06:21,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:21,248 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:21,263 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:21,269 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:06:21,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:21,271 INFO L82 PathProgramCache]: Analyzing trace with hash 42877016, now seen corresponding path program 1 times [2020-11-29 19:06:21,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:21,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967196128] [2020-11-29 19:06:21,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:06:21,467 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 19:06:21,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967196128] [2020-11-29 19:06:21,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:06:21,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:06:21,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645453918] [2020-11-29 19:06:21,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:06:21,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:06:21,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:06:21,632 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 6 states. [2020-11-29 19:06:21,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:06:21,886 INFO L93 Difference]: Finished difference Result 282 states and 405 transitions. [2020-11-29 19:06:21,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:06:21,892 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 282 states and 405 transitions. [2020-11-29 19:06:21,910 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 181 [2020-11-29 19:06:21,924 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 282 states to 261 states and 384 transitions. [2020-11-29 19:06:21,925 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 261 [2020-11-29 19:06:21,927 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 261 [2020-11-29 19:06:21,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 261 states and 384 transitions. [2020-11-29 19:06:21,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:06:21,940 INFO L691 BuchiCegarLoop]: Abstraction has 261 states and 384 transitions. [2020-11-29 19:06:21,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states and 384 transitions. [2020-11-29 19:06:21,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 156. [2020-11-29 19:06:21,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-11-29 19:06:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 228 transitions. [2020-11-29 19:06:22,004 INFO L714 BuchiCegarLoop]: Abstraction has 156 states and 228 transitions. [2020-11-29 19:06:22,004 INFO L594 BuchiCegarLoop]: Abstraction has 156 states and 228 transitions. [2020-11-29 19:06:22,004 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:06:22,004 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 156 states and 228 transitions. [2020-11-29 19:06:22,011 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 108 [2020-11-29 19:06:22,011 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:06:22,011 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:06:22,012 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:06:22,012 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:06:22,024 INFO L794 eck$LassoCheckResult]: Stem: 516#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);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(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);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~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 424#L-1 havoc main_#res;havoc main_#t~ret77, main_~retValue_acc~11, main_~tmp~7;havoc main_~retValue_acc~11;havoc main_~tmp~7; 425#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 475#L75 main_#t~ret77 := valid_product_#res;main_~tmp~7 := main_#t~ret77;havoc main_#t~ret77; 486#L906 assume 0 != main_~tmp~7; 504#L883 havoc test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, 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; 443#L935-1 [2020-11-29 19:06:22,024 INFO L796 eck$LassoCheckResult]: Loop: 443#L935-1 assume !false; 521#L393 assume test_~splverifierCounter~0 < 4; 505#L394 test_~tmp~3 := test_#t~nondet38;havoc test_#t~nondet38; 506#L402 assume !(0 != test_~tmp~3); 479#L402-1 test_~tmp___0~1 := test_#t~nondet39;havoc test_#t~nondet39; 509#L412 assume !(0 != test_~tmp___0~1); 456#L412-1 test_~tmp___2~0 := test_#t~nondet40;havoc test_#t~nondet40; 474#L422 assume 0 != test_~tmp___2~0; 441#L428-1 assume !(0 != ~pumpRunning~0); 446#L195 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 515#L253 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret18, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 461#L227-1 assume !(0 == ~pumpRunning~0); 463#L202 havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 471#L130-1 __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 442#L929 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 443#L935-1 [2020-11-29 19:06:22,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:22,025 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-29 19:06:22,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:22,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951944607] [2020-11-29 19:06:22,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:22,076 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:22,119 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:22,139 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:06:22,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:22,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1955219765, now seen corresponding path program 1 times [2020-11-29 19:06:22,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:22,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792204305] [2020-11-29 19:06:22,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:06:22,173 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 19:06:22,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792204305] [2020-11-29 19:06:22,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:06:22,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:06:22,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057947846] [2020-11-29 19:06:22,174 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 19:06:22,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:06:22,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:06:22,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:06:22,175 INFO L87 Difference]: Start difference. First operand 156 states and 228 transitions. cyclomatic complexity: 75 Second operand 3 states. [2020-11-29 19:06:22,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:06:22,299 INFO L93 Difference]: Finished difference Result 201 states and 277 transitions. [2020-11-29 19:06:22,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:06:22,300 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 201 states and 277 transitions. [2020-11-29 19:06:22,303 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 142 [2020-11-29 19:06:22,305 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 201 states to 201 states and 277 transitions. [2020-11-29 19:06:22,305 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 201 [2020-11-29 19:06:22,306 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 201 [2020-11-29 19:06:22,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 201 states and 277 transitions. [2020-11-29 19:06:22,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:06:22,307 INFO L691 BuchiCegarLoop]: Abstraction has 201 states and 277 transitions. [2020-11-29 19:06:22,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states and 277 transitions. [2020-11-29 19:06:22,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2020-11-29 19:06:22,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-11-29 19:06:22,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 277 transitions. [2020-11-29 19:06:22,329 INFO L714 BuchiCegarLoop]: Abstraction has 201 states and 277 transitions. [2020-11-29 19:06:22,329 INFO L594 BuchiCegarLoop]: Abstraction has 201 states and 277 transitions. [2020-11-29 19:06:22,330 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 19:06:22,330 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 201 states and 277 transitions. [2020-11-29 19:06:22,332 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 142 [2020-11-29 19:06:22,333 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:06:22,333 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:06:22,335 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:06:22,335 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 19:06:22,335 INFO L794 eck$LassoCheckResult]: Stem: 883#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);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(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);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~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 786#L-1 havoc main_#res;havoc main_#t~ret77, main_~retValue_acc~11, main_~tmp~7;havoc main_~retValue_acc~11;havoc main_~tmp~7; 787#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 842#L75 main_#t~ret77 := valid_product_#res;main_~tmp~7 := main_#t~ret77;havoc main_#t~ret77; 854#L906 assume 0 != main_~tmp~7; 872#L883 havoc test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, 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; 805#L935-1 [2020-11-29 19:06:22,336 INFO L796 eck$LassoCheckResult]: Loop: 805#L935-1 assume !false; 890#L393 assume test_~splverifierCounter~0 < 4; 873#L394 test_~tmp~3 := test_#t~nondet38;havoc test_#t~nondet38; 874#L402 assume !(0 != test_~tmp~3); 846#L402-1 test_~tmp___0~1 := test_#t~nondet39;havoc test_#t~nondet39; 877#L412 assume !(0 != test_~tmp___0~1); 819#L412-1 test_~tmp___2~0 := test_#t~nondet40;havoc test_#t~nondet40; 905#L422 assume 0 != test_~tmp___2~0; 949#L428-1 assume !(0 != ~pumpRunning~0); 903#L195 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 882#L253 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret18, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 825#L227-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret37, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 826#L170-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 799#L175-1 isHighWaterLevel_#t~ret37 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret37;havoc isHighWaterLevel_#t~ret37; 800#L355-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 875#L355-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 855#L361-1 processEnvironment__wrappee__highWaterSensor_#t~ret18 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret18;havoc processEnvironment__wrappee__highWaterSensor_#t~ret18; 856#L231-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 836#L202 havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 837#L130-1 __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 804#L929 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 805#L935-1 [2020-11-29 19:06:22,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:22,337 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-29 19:06:22,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:22,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164014266] [2020-11-29 19:06:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:22,411 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:22,464 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:22,474 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:06:22,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:22,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1592970081, now seen corresponding path program 1 times [2020-11-29 19:06:22,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:22,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673241414] [2020-11-29 19:06:22,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:22,480 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:22,484 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:22,488 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:06:22,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:22,489 INFO L82 PathProgramCache]: Analyzing trace with hash 2049041275, now seen corresponding path program 1 times [2020-11-29 19:06:22,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:22,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917248173] [2020-11-29 19:06:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:06:22,574 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 19:06:22,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917248173] [2020-11-29 19:06:22,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:06:22,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:06:22,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675063132] [2020-11-29 19:06:22,714 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-11-29 19:06:22,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:06:22,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:06:22,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:06:22,775 INFO L87 Difference]: Start difference. First operand 201 states and 277 transitions. cyclomatic complexity: 79 Second operand 5 states. [2020-11-29 19:06:22,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:06:22,922 INFO L93 Difference]: Finished difference Result 663 states and 915 transitions. [2020-11-29 19:06:22,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:06:22,923 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 663 states and 915 transitions. [2020-11-29 19:06:22,932 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 495 [2020-11-29 19:06:22,941 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 663 states to 663 states and 915 transitions. [2020-11-29 19:06:22,942 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 663 [2020-11-29 19:06:22,944 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 663 [2020-11-29 19:06:22,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 663 states and 915 transitions. [2020-11-29 19:06:22,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:06:22,948 INFO L691 BuchiCegarLoop]: Abstraction has 663 states and 915 transitions. [2020-11-29 19:06:22,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states and 915 transitions. [2020-11-29 19:06:22,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 396. [2020-11-29 19:06:22,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2020-11-29 19:06:22,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 536 transitions. [2020-11-29 19:06:22,966 INFO L714 BuchiCegarLoop]: Abstraction has 396 states and 536 transitions. [2020-11-29 19:06:22,966 INFO L594 BuchiCegarLoop]: Abstraction has 396 states and 536 transitions. [2020-11-29 19:06:22,966 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 19:06:22,966 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 396 states and 536 transitions. [2020-11-29 19:06:22,969 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 284 [2020-11-29 19:06:22,969 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:06:22,969 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:06:22,970 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:06:22,971 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:06:22,971 INFO L794 eck$LassoCheckResult]: Stem: 1774#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);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(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(21);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~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(25);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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 1668#L-1 havoc main_#res;havoc main_#t~ret77, main_~retValue_acc~11, main_~tmp~7;havoc main_~retValue_acc~11;havoc main_~tmp~7; 1669#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1726#L75 main_#t~ret77 := valid_product_#res;main_~tmp~7 := main_#t~ret77;havoc main_#t~ret77; 1740#L906 assume 0 != main_~tmp~7; 1762#L883 havoc test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, 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; 1790#L935-1 [2020-11-29 19:06:22,971 INFO L796 eck$LassoCheckResult]: Loop: 1790#L935-1 assume !false; 1954#L393 assume test_~splverifierCounter~0 < 4; 1760#L394 test_~tmp~3 := test_#t~nondet38;havoc test_#t~nondet38; 1761#L402 assume !(0 != test_~tmp~3); 1767#L402-1 test_~tmp___0~1 := test_#t~nondet39;havoc test_#t~nondet39; 1768#L412 assume !(0 != test_~tmp___0~1); 2033#L412-1 test_~tmp___2~0 := test_#t~nondet40;havoc test_#t~nondet40; 2032#L422 assume 0 != test_~tmp___2~0; 2014#L428-1 assume !(0 != ~pumpRunning~0); 1801#L195 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret19, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 1773#L253 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret18, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1705#L227-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret37, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~2, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~2;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 1706#L170-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 1680#L175-1 isHighWaterLevel_#t~ret37 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~2 := isHighWaterLevel_#t~ret37;havoc isHighWaterLevel_#t~ret37; 1681#L355-3 assume 0 != isHighWaterLevel_~tmp~2;isHighWaterLevel_~tmp___0~0 := 0; 1763#L355-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 1738#L361-1 processEnvironment__wrappee__highWaterSensor_#t~ret18 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret18;havoc processEnvironment__wrappee__highWaterSensor_#t~ret18; 1739#L231-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1724#L202 havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 1972#L130-1 __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 1968#L929 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~8);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~3;havoc getWaterLevel_~retValue_acc~3;getWaterLevel_~retValue_acc~3 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~3; 1969#L162 __utac_acc__Specification3_spec__1_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret79;havoc __utac_acc__Specification3_spec__1_#t~ret79; 1962#L935 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 1790#L935-1 [2020-11-29 19:06:22,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:22,972 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2020-11-29 19:06:22,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:22,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21994761] [2020-11-29 19:06:22,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:23,026 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:23,068 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:23,083 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:06:23,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:23,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1835898421, now seen corresponding path program 1 times [2020-11-29 19:06:23,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:23,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162821914] [2020-11-29 19:06:23,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:23,095 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:23,103 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:23,109 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:06:23,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:06:23,110 INFO L82 PathProgramCache]: Analyzing trace with hash 2033651663, now seen corresponding path program 1 times [2020-11-29 19:06:23,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:06:23,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043246608] [2020-11-29 19:06:23,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:06:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:23,151 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:06:23,206 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:06:23,222 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:06:23,359 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-11-29 19:06:23,465 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-11-29 19:07:39,580 WARN L193 SmtUtils]: Spent 1.27 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-29 19:08:31,906 WARN L193 SmtUtils]: Spent 52.32 s on a formula simplification that was a NOOP. DAG size: 433 [2020-11-29 19:08:32,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:08:32 BoogieIcfgContainer [2020-11-29 19:08:32,128 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:08:32,129 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:08:32,129 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:08:32,129 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:08:32,130 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:06:20" (3/4) ... [2020-11-29 19:08:32,132 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 19:08:32,200 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_be0b3ac5-0c6d-4cb6-99ad-db4b4ba140a3/bin/uautomizer/witness.graphml [2020-11-29 19:08:32,201 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:08:32,203 INFO L168 Benchmark]: Toolchain (without parser) took 133471.68 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 54.8 MB in the beginning and 60.5 MB in the end (delta: -5.7 MB). Peak memory consumption was 37.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:08:32,203 INFO L168 Benchmark]: CDTParser took 0.85 ms. Allocated memory is still 92.3 MB. Free memory is still 72.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:08:32,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 482.97 ms. Allocated memory is still 92.3 MB. Free memory was 54.6 MB in the beginning and 58.2 MB in the end (delta: -3.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:08:32,205 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.81 ms. Allocated memory is still 92.3 MB. Free memory was 58.2 MB in the beginning and 54.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:08:32,205 INFO L168 Benchmark]: Boogie Preprocessor took 70.95 ms. Allocated memory is still 92.3 MB. Free memory was 54.6 MB in the beginning and 51.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:08:32,206 INFO L168 Benchmark]: RCFGBuilder took 1201.64 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 51.7 MB in the beginning and 46.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:08:32,207 INFO L168 Benchmark]: BuchiAutomizer took 131532.30 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 45.9 MB in the beginning and 62.6 MB in the end (delta: -16.7 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. [2020-11-29 19:08:32,208 INFO L168 Benchmark]: Witness Printer took 72.23 ms. Allocated memory is still 134.2 MB. Free memory was 62.6 MB in the beginning and 60.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:08:32,212 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.85 ms. Allocated memory is still 92.3 MB. Free memory is still 72.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 482.97 ms. Allocated memory is still 92.3 MB. Free memory was 54.6 MB in the beginning and 58.2 MB in the end (delta: -3.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.81 ms. Allocated memory is still 92.3 MB. Free memory was 58.2 MB in the beginning and 54.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.95 ms. Allocated memory is still 92.3 MB. Free memory was 54.6 MB in the beginning and 51.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1201.64 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 51.7 MB in the beginning and 46.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 131532.30 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 45.9 MB in the beginning and 62.6 MB in the end (delta: -16.7 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. * Witness Printer took 72.23 ms. Allocated memory is still 134.2 MB. Free memory was 62.6 MB in the beginning and 60.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 396 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 131.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 130.6s. Construction of modules took 0.3s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 372 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 396 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 557 SDtfs, 1384 SDslu, 1534 SDs, 0 SdLazy, 142 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 392]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=3512} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=3512, NULL=3520, NULL=0, NULL=3518, NULL=3531, methaneLevelCritical=0, tmp=0, retValue_acc=0, tmp___1=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d049c4d=0, NULL=3526, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3afdd05f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3373cfc6=0, tmp=0, NULL=3515, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3390de64=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73cf98c6=60, waterLevel=1, NULL=0, NULL=3529, retValue_acc=1, \result=1, head=0, pumpRunning=0, NULL=3540, retValue_acc=1, NULL=0, NULL=0, tmp=1, NULL=0, \result=1, NULL=3528, NULL=0, NULL=0, NULL=0, NULL=0, tmp=1, NULL=3533, tmp___0=0, NULL=3538, NULL=3521, NULL=3513, tmp=0, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3ac6a034=0, NULL=0, NULL=0, NULL=3535, NULL=3527, NULL=3530, NULL=3532, NULL=3517, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26f8ac1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@311097ce=0, NULL=0, NULL=3534, NULL=3519, tmp___0=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d3477bd=0, NULL=0, tmp=0, NULL=3514, NULL=3525, tmp___0=1, NULL=0, systemActive=1, NULL=3524, \result=1, NULL=0, \result=0, retValue_acc=0, retValue_acc=0, NULL=3516, \result=0, NULL=0, NULL=0, NULL=3536, NULL=3537, retValue_acc=1, tmp___2=60, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=3539, NULL=3522, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@51c7f708=0, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7eec5b7d=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=3523} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L87] int waterLevel = 1; [L88] int methaneLevelCritical = 0; [L187] int pumpRunning = 0; [L188] int systemActive = 1; [L627] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L824] int cleanupTimeShifts = 4; [L897] int retValue_acc ; [L898] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L904] tmp = valid_product() [L906] COND TRUE \read(tmp) [L383] int splverifierCounter ; [L384] int tmp ; [L385] int tmp___0 ; [L386] int tmp___1 ; [L387] int tmp___2 ; [L390] splverifierCounter = 0 Loop: [L392] COND TRUE 1 [L394] COND TRUE splverifierCounter < 4 [L400] tmp = __VERIFIER_nondet_int() [L402] COND FALSE !(\read(tmp)) [L410] tmp___0 = __VERIFIER_nondet_int() [L412] COND FALSE !(\read(tmp___0)) [L420] tmp___2 = __VERIFIER_nondet_int() [L422] COND TRUE \read(tmp___2) [L195] COND FALSE !(\read(pumpRunning)) [L202] COND TRUE \read(systemActive) [L250] int tmp ; [L253] COND FALSE !(\read(pumpRunning)) [L224] int tmp ; [L227] COND TRUE ! pumpRunning [L347] int retValue_acc ; [L348] int tmp ; [L349] int tmp___0 ; [L167] int retValue_acc ; [L170] COND TRUE waterLevel < 2 [L171] retValue_acc = 1 [L172] return (retValue_acc); [L353] tmp = isHighWaterSensorDry() [L355] COND TRUE \read(tmp) [L356] tmp___0 = 0 [L360] retValue_acc = tmp___0 [L361] return (retValue_acc); [L229] tmp = isHighWaterLevel() [L231] COND FALSE !(\read(tmp)) [L921] int tmp ; [L922] int tmp___0 ; [L923] int tmp___1 ; [L126] int retValue_acc ; [L129] retValue_acc = methaneLevelCritical [L130] return (retValue_acc); [L927] tmp = isMethaneLevelCritical() [L929] COND FALSE !(\read(tmp)) [L158] int retValue_acc ; [L161] retValue_acc = waterLevel [L162] return (retValue_acc); [L933] tmp___0 = getWaterLevel() [L935] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...