./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product24.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_911011a1-78f3-4c34-bfa7-676d0d7d1834/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_911011a1-78f3-4c34-bfa7-676d0d7d1834/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_911011a1-78f3-4c34-bfa7-676d0d7d1834/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_911011a1-78f3-4c34-bfa7-676d0d7d1834/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product24.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_911011a1-78f3-4c34-bfa7-676d0d7d1834/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_911011a1-78f3-4c34-bfa7-676d0d7d1834/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 609efdf4f988170ff745a87fec8ed7ede6211079 .............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:22:37,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:22:37,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:22:37,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:22:37,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:22:37,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:22:37,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:22:37,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:22:37,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:22:37,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:22:37,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:22:37,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:22:37,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:22:37,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:22:37,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:22:37,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:22:37,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:22:37,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:22:37,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:22:37,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:22:37,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:22:37,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:22:37,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:22:37,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:22:37,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:22:37,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:22:37,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:22:37,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:22:37,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:22:37,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:22:37,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:22:37,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:22:37,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:22:37,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:22:37,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:22:37,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:22:37,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:22:37,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:22:37,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:22:37,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:22:37,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:22:37,535 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_911011a1-78f3-4c34-bfa7-676d0d7d1834/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 01:22:37,579 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:22:37,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:22:37,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:22:37,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:22:37,581 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:22:37,582 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 01:22:37,582 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 01:22:37,582 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 01:22:37,582 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 01:22:37,583 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 01:22:37,584 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 01:22:37,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:22:37,584 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:22:37,585 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:22:37,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:22:37,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:22:37,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:22:37,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 01:22:37,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 01:22:37,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 01:22:37,586 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:22:37,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:22:37,587 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 01:22:37,587 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:22:37,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 01:22:37,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:22:37,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:22:37,588 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 01:22:37,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:22:37,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:22:37,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:22:37,590 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 01:22:37,592 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 01:22:37,592 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_911011a1-78f3-4c34-bfa7-676d0d7d1834/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_911011a1-78f3-4c34-bfa7-676d0d7d1834/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 609efdf4f988170ff745a87fec8ed7ede6211079 [2020-11-30 01:22:37,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:22:37,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:22:37,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:22:37,938 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:22:37,939 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:22:37,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_911011a1-78f3-4c34-bfa7-676d0d7d1834/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product24.cil.c [2020-11-30 01:22:38,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_911011a1-78f3-4c34-bfa7-676d0d7d1834/bin/uautomizer/data/c61392b5a/d9685ab202c146a3bcd3947e3c140338/FLAG05857ce90 [2020-11-30 01:22:38,613 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:22:38,613 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_911011a1-78f3-4c34-bfa7-676d0d7d1834/sv-benchmarks/c/product-lines/minepump_spec3_product24.cil.c [2020-11-30 01:22:38,627 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_911011a1-78f3-4c34-bfa7-676d0d7d1834/bin/uautomizer/data/c61392b5a/d9685ab202c146a3bcd3947e3c140338/FLAG05857ce90 [2020-11-30 01:22:38,901 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_911011a1-78f3-4c34-bfa7-676d0d7d1834/bin/uautomizer/data/c61392b5a/d9685ab202c146a3bcd3947e3c140338 [2020-11-30 01:22:38,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:22:38,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:22:38,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:22:38,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:22:38,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:22:38,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:22:38" (1/1) ... [2020-11-30 01:22:38,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74ca94a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:38, skipping insertion in model container [2020-11-30 01:22:38,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:22:38" (1/1) ... [2020-11-30 01:22:38,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:22:38,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:22:39,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:22:39,366 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:22:39,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:22:39,485 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:22:39,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:39 WrapperNode [2020-11-30 01:22:39,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:22:39,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:22:39,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:22:39,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:22:39,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:39" (1/1) ... [2020-11-30 01:22:39,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:39" (1/1) ... [2020-11-30 01:22:39,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:22:39,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:22:39,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:22:39,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:22:39,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:39" (1/1) ... [2020-11-30 01:22:39,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:39" (1/1) ... [2020-11-30 01:22:39,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:39" (1/1) ... [2020-11-30 01:22:39,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:39" (1/1) ... [2020-11-30 01:22:39,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:39" (1/1) ... [2020-11-30 01:22:39,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:39" (1/1) ... [2020-11-30 01:22:39,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:39" (1/1) ... [2020-11-30 01:22:39,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:22:39,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:22:39,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:22:39,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:22:39,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_911011a1-78f3-4c34-bfa7-676d0d7d1834/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:22:39,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:22:39,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:22:39,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:22:39,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:22:40,761 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:22:40,764 INFO L298 CfgBuilder]: Removed 174 assume(true) statements. [2020-11-30 01:22:40,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:22:40 BoogieIcfgContainer [2020-11-30 01:22:40,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:22:40,767 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 01:22:40,768 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 01:22:40,771 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 01:22:40,772 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:22:40,772 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 01:22:38" (1/3) ... [2020-11-30 01:22:40,773 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36b0d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:22:40, skipping insertion in model container [2020-11-30 01:22:40,774 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:22:40,774 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:39" (2/3) ... [2020-11-30 01:22:40,774 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36b0d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:22:40, skipping insertion in model container [2020-11-30 01:22:40,774 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:22:40,774 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:22:40" (3/3) ... [2020-11-30 01:22:40,776 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product24.cil.c [2020-11-30 01:22:40,821 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 01:22:40,821 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 01:22:40,821 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 01:22:40,822 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:22:40,822 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:22:40,822 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 01:22:40,822 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:22:40,822 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 01:22:40,838 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 113 states. [2020-11-30 01:22:40,864 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2020-11-30 01:22:40,864 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:22:40,864 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:22:40,872 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:22:40,873 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:22:40,873 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 01:22:40,873 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 113 states. [2020-11-30 01:22:40,892 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2020-11-30 01:22:40,892 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:22:40,892 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:22:40,893 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:22:40,893 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:22:40,899 INFO L794 eck$LassoCheckResult]: Stem: 70#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(21);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(30);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(9);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(21);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(25);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(13);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string73.base, #t~string73.offset, 1);call write~init~int(77, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(101, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(116, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(104, #t~string73.base, 4 + #t~string73.offset, 1);call write~init~int(58, #t~string73.base, 5 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 6 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string75.base, #t~string75.offset, 1);call write~init~int(82, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(73, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(84, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 4 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string77.base, #t~string77.offset, 1);call write~init~int(75, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 11#L-1true havoc main_#res;havoc main_#t~ret34, main_~retValue_acc~3, main_~tmp~5;havoc main_~retValue_acc~3;havoc main_~tmp~5; 54#L947true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 80#L955true main_#t~ret34 := valid_product_#res;main_~tmp~5 := main_#t~ret34;havoc main_#t~ret34; 106#L456true assume 0 != main_~tmp~5; 42#L430true havoc test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, 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; 91#L352-1true [2020-11-30 01:22:40,899 INFO L796 eck$LassoCheckResult]: Loop: 91#L352-1true assume !false; 72#L278true assume test_~splverifierCounter~0 < 4; 40#L279true test_~tmp~3 := test_#t~nondet27;havoc test_#t~nondet27; 50#L287true assume !(0 != test_~tmp~3); 36#L287-1true test_~tmp___0~1 := test_#t~nondet28;havoc test_#t~nondet28; 68#L297true assume !(0 != test_~tmp___0~1); 67#L297-1true test_~tmp___2~0 := test_#t~nondet29;havoc test_#t~nondet29; 12#L307true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 27#L315-1true assume !(0 != ~pumpRunning~0); 18#L70true assume !(0 != ~systemActive~0); 79#L77true havoc __utac_acc__Specification3_spec__1_#t~ret31, __utac_acc__Specification3_spec__1_#t~ret32, __utac_acc__Specification3_spec__1_#t~ret33, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~4;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~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 30#L879-1true __utac_acc__Specification3_spec__1_#t~ret31 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret31;havoc __utac_acc__Specification3_spec__1_#t~ret31; 115#L346true assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 91#L352-1true [2020-11-30 01:22:40,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:22:40,907 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-30 01:22:40,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:22:40,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795492996] [2020-11-30 01:22:40,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:22:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:22:41,166 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:22:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:22:41,325 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:22:41,382 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:22:41,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:22:41,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1670755457, now seen corresponding path program 1 times [2020-11-30 01:22:41,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:22:41,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115206438] [2020-11-30 01:22:41,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:22:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:22:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:22:41,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115206438] [2020-11-30 01:22:41,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:22:41,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:22:41,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617919190] [2020-11-30 01:22:41,446 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:22:41,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:22:41,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:22:41,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:22:41,464 INFO L87 Difference]: Start difference. First operand 113 states. Second operand 3 states. [2020-11-30 01:22:41,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:22:41,548 INFO L93 Difference]: Finished difference Result 214 states and 306 transitions. [2020-11-30 01:22:41,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:22:41,550 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 214 states and 306 transitions. [2020-11-30 01:22:41,556 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 138 [2020-11-30 01:22:41,563 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 214 states to 200 states and 291 transitions. [2020-11-30 01:22:41,564 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 200 [2020-11-30 01:22:41,566 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 200 [2020-11-30 01:22:41,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 291 transitions. [2020-11-30 01:22:41,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:22:41,568 INFO L691 BuchiCegarLoop]: Abstraction has 200 states and 291 transitions. [2020-11-30 01:22:41,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 291 transitions. [2020-11-30 01:22:41,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2020-11-30 01:22:41,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-11-30 01:22:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 288 transitions. [2020-11-30 01:22:41,610 INFO L714 BuchiCegarLoop]: Abstraction has 198 states and 288 transitions. [2020-11-30 01:22:41,610 INFO L594 BuchiCegarLoop]: Abstraction has 198 states and 288 transitions. [2020-11-30 01:22:41,610 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 01:22:41,610 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 198 states and 288 transitions. [2020-11-30 01:22:41,613 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 136 [2020-11-30 01:22:41,613 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:22:41,613 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:22:41,614 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:22:41,614 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:22:41,615 INFO L794 eck$LassoCheckResult]: Stem: 427#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(21);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(30);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(9);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(21);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(25);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(13);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string73.base, #t~string73.offset, 1);call write~init~int(77, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(101, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(116, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(104, #t~string73.base, 4 + #t~string73.offset, 1);call write~init~int(58, #t~string73.base, 5 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 6 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string75.base, #t~string75.offset, 1);call write~init~int(82, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(73, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(84, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 4 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string77.base, #t~string77.offset, 1);call write~init~int(75, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 351#L-1 havoc main_#res;havoc main_#t~ret34, main_~retValue_acc~3, main_~tmp~5;havoc main_~retValue_acc~3;havoc main_~tmp~5; 352#L947 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 419#L955 main_#t~ret34 := valid_product_#res;main_~tmp~5 := main_#t~ret34;havoc main_#t~ret34; 434#L456 assume 0 != main_~tmp~5; 405#L430 havoc test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, 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; 406#L352-1 [2020-11-30 01:22:41,615 INFO L796 eck$LassoCheckResult]: Loop: 406#L352-1 assume !false; 428#L278 assume test_~splverifierCounter~0 < 4; 403#L279 test_~tmp~3 := test_#t~nondet27;havoc test_#t~nondet27; 404#L287 assume !(0 != test_~tmp~3); 395#L287-1 test_~tmp___0~1 := test_#t~nondet28;havoc test_#t~nondet28; 396#L297 assume !(0 != test_~tmp___0~1); 342#L297-1 test_~tmp___2~0 := test_#t~nondet29;havoc test_#t~nondet29; 353#L307 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 354#L315-1 assume !(0 != ~pumpRunning~0); 365#L70 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 366#L128 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret7, processEnvironment__wrappee__lowWaterSensor_~tmp~0;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~0; 468#L102-1 assume !(0 != ~pumpRunning~0); 467#L77 havoc __utac_acc__Specification3_spec__1_#t~ret31, __utac_acc__Specification3_spec__1_#t~ret32, __utac_acc__Specification3_spec__1_#t~ret33, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~4;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~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 466#L879-1 __utac_acc__Specification3_spec__1_#t~ret31 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret31;havoc __utac_acc__Specification3_spec__1_#t~ret31; 465#L346 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 406#L352-1 [2020-11-30 01:22:41,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:22:41,616 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-30 01:22:41,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:22:41,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986488412] [2020-11-30 01:22:41,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:22:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:22:41,691 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:22:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:22:41,798 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:22:41,827 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:22:41,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:22:41,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1427585839, now seen corresponding path program 1 times [2020-11-30 01:22:41,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:22:41,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528656698] [2020-11-30 01:22:41,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:22:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:22:41,835 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:22:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:22:41,839 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:22:41,843 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:22:41,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:22:41,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1021999211, now seen corresponding path program 1 times [2020-11-30 01:22:41,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:22:41,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067951591] [2020-11-30 01:22:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:22:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:22:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:22:41,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067951591] [2020-11-30 01:22:41,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:22:41,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:22:41,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247977203] [2020-11-30 01:22:42,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:22:42,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:22:42,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:22:42,100 INFO L87 Difference]: Start difference. First operand 198 states and 288 transitions. cyclomatic complexity: 93 Second operand 5 states. [2020-11-30 01:22:42,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:22:42,384 INFO L93 Difference]: Finished difference Result 686 states and 1012 transitions. [2020-11-30 01:22:42,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:22:42,385 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 686 states and 1012 transitions. [2020-11-30 01:22:42,397 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 494 [2020-11-30 01:22:42,412 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 686 states to 686 states and 1012 transitions. [2020-11-30 01:22:42,412 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 686 [2020-11-30 01:22:42,415 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 686 [2020-11-30 01:22:42,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 686 states and 1012 transitions. [2020-11-30 01:22:42,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:22:42,424 INFO L691 BuchiCegarLoop]: Abstraction has 686 states and 1012 transitions. [2020-11-30 01:22:42,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states and 1012 transitions. [2020-11-30 01:22:42,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 390. [2020-11-30 01:22:42,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-11-30 01:22:42,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 562 transitions. [2020-11-30 01:22:42,464 INFO L714 BuchiCegarLoop]: Abstraction has 390 states and 562 transitions. [2020-11-30 01:22:42,464 INFO L594 BuchiCegarLoop]: Abstraction has 390 states and 562 transitions. [2020-11-30 01:22:42,464 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 01:22:42,464 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 390 states and 562 transitions. [2020-11-30 01:22:42,467 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 272 [2020-11-30 01:22:42,467 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:22:42,467 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:22:42,468 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:22:42,468 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:22:42,469 INFO L794 eck$LassoCheckResult]: Stem: 1333#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(21);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(30);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(9);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(21);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(25);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(13);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string73.base, #t~string73.offset, 1);call write~init~int(77, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(101, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(116, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(104, #t~string73.base, 4 + #t~string73.offset, 1);call write~init~int(58, #t~string73.base, 5 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 6 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string75.base, #t~string75.offset, 1);call write~init~int(82, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(73, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(84, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 4 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string77.base, #t~string77.offset, 1);call write~init~int(75, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1253#L-1 havoc main_#res;havoc main_#t~ret34, main_~retValue_acc~3, main_~tmp~5;havoc main_~retValue_acc~3;havoc main_~tmp~5; 1254#L947 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 1323#L955 main_#t~ret34 := valid_product_#res;main_~tmp~5 := main_#t~ret34;havoc main_#t~ret34; 1343#L456 assume 0 != main_~tmp~5; 1309#L430 havoc test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, 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; 1288#L352-1 [2020-11-30 01:22:42,490 INFO L796 eck$LassoCheckResult]: Loop: 1288#L352-1 assume !false; 1334#L278 assume test_~splverifierCounter~0 < 4; 1307#L279 test_~tmp~3 := test_#t~nondet27;havoc test_#t~nondet27; 1308#L287 assume !(0 != test_~tmp~3); 1299#L287-1 test_~tmp___0~1 := test_#t~nondet28;havoc test_#t~nondet28; 1300#L297 assume !(0 != test_~tmp___0~1); 1331#L297-1 test_~tmp___2~0 := test_#t~nondet29;havoc test_#t~nondet29; 1257#L307 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1258#L315-1 assume !(0 != ~pumpRunning~0); 1267#L70 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 1268#L128 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret7, processEnvironment__wrappee__lowWaterSensor_~tmp~0;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~0; 1613#L102-1 assume !(0 != ~pumpRunning~0); 1554#L77 havoc __utac_acc__Specification3_spec__1_#t~ret31, __utac_acc__Specification3_spec__1_#t~ret32, __utac_acc__Specification3_spec__1_#t~ret33, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~4;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~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 1289#L879-1 __utac_acc__Specification3_spec__1_#t~ret31 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret31;havoc __utac_acc__Specification3_spec__1_#t~ret31; 1290#L346 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~4);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 1372#L911 __utac_acc__Specification3_spec__1_#t~ret32 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret32;havoc __utac_acc__Specification3_spec__1_#t~ret32; 1351#L352 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 1288#L352-1 [2020-11-30 01:22:42,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:22:42,491 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-30 01:22:42,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:22:42,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982899475] [2020-11-30 01:22:42,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:22:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:22:42,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:22:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:22:42,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:22:42,620 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:22:42,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:22:42,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1815416187, now seen corresponding path program 1 times [2020-11-30 01:22:42,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:22:42,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79262043] [2020-11-30 01:22:42,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:22:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:22:42,639 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:22:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:22:42,650 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:22:42,654 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:22:42,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:22:42,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1406261345, now seen corresponding path program 1 times [2020-11-30 01:22:42,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:22:42,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707748192] [2020-11-30 01:22:42,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:22:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:22:42,706 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:22:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:22:42,746 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:22:42,764 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:22:42,870 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-11-30 01:24:04,516 WARN L193 SmtUtils]: Spent 1.36 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-30 01:25:01,828 WARN L193 SmtUtils]: Spent 57.30 s on a formula simplification that was a NOOP. DAG size: 433 [2020-11-30 01:25:02,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 01:25:02 BoogieIcfgContainer [2020-11-30 01:25:02,125 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 01:25:02,126 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:25:02,126 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:25:02,126 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:25:02,127 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:22:40" (3/4) ... [2020-11-30 01:25:02,132 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 01:25:02,187 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_911011a1-78f3-4c34-bfa7-676d0d7d1834/bin/uautomizer/witness.graphml [2020-11-30 01:25:02,194 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:25:02,196 INFO L168 Benchmark]: Toolchain (without parser) took 143291.00 ms. Allocated memory was 86.0 MB in the beginning and 159.4 MB in the end (delta: 73.4 MB). Free memory was 52.9 MB in the beginning and 78.9 MB in the end (delta: -26.0 MB). Peak memory consumption was 47.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:25:02,197 INFO L168 Benchmark]: CDTParser took 0.82 ms. Allocated memory is still 86.0 MB. Free memory was 43.1 MB in the beginning and 43.1 MB in the end (delta: 34.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:25:02,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 571.91 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 52.9 MB in the beginning and 71.7 MB in the end (delta: -18.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:25:02,198 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.43 ms. Allocated memory is still 104.9 MB. Free memory was 71.7 MB in the beginning and 68.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:25:02,198 INFO L168 Benchmark]: Boogie Preprocessor took 100.56 ms. Allocated memory is still 104.9 MB. Free memory was 68.2 MB in the beginning and 65.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:25:02,199 INFO L168 Benchmark]: RCFGBuilder took 1086.29 ms. Allocated memory is still 104.9 MB. Free memory was 65.5 MB in the beginning and 63.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:25:02,200 INFO L168 Benchmark]: BuchiAutomizer took 141358.03 ms. Allocated memory was 104.9 MB in the beginning and 159.4 MB in the end (delta: 54.5 MB). Free memory was 63.0 MB in the beginning and 81.0 MB in the end (delta: -18.0 MB). Peak memory consumption was 84.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:25:02,200 INFO L168 Benchmark]: Witness Printer took 68.53 ms. Allocated memory is still 159.4 MB. Free memory was 81.0 MB in the beginning and 78.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:25:02,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82 ms. Allocated memory is still 86.0 MB. Free memory was 43.1 MB in the beginning and 43.1 MB in the end (delta: 34.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 571.91 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 52.9 MB in the beginning and 71.7 MB in the end (delta: -18.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.43 ms. Allocated memory is still 104.9 MB. Free memory was 71.7 MB in the beginning and 68.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 100.56 ms. Allocated memory is still 104.9 MB. Free memory was 68.2 MB in the beginning and 65.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1086.29 ms. Allocated memory is still 104.9 MB. Free memory was 65.5 MB in the beginning and 63.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 141358.03 ms. Allocated memory was 104.9 MB in the beginning and 159.4 MB in the end (delta: 54.5 MB). Free memory was 63.0 MB in the beginning and 81.0 MB in the end (delta: -18.0 MB). Peak memory consumption was 84.5 MB. Max. memory is 16.1 GB. * Witness Printer took 68.53 ms. Allocated memory is still 159.4 MB. Free memory was 81.0 MB in the beginning and 78.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 390 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 141.2s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 140.6s. Construction of modules took 0.2s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 298 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 390 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 368 SDtfs, 719 SDslu, 781 SDs, 0 SdLazy, 89 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 277]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=6022} State at position 1 is {NULL=6042, NULL=0, NULL=0, NULL=0, NULL=6028, NULL=0, NULL=6022, retValue_acc=0, NULL=6029, NULL=6049, NULL=6023, tmp=0, NULL=6040, NULL=6036, NULL=6034, methaneLevelCritical=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@fec86c5=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5132b9e9=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a487587=0, NULL=0, NULL=0, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@37f4a35d=0, NULL=6043, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4c04f369=0, cleanupTimeShifts=4, NULL=6027, tmp=0, NULL=6024, NULL=6044, tmp___0=1, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, \result=1, retValue_acc=0, NULL=6045, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c921944=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=6038, \result=1, head=0, pumpRunning=0, NULL=6047, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@173ebc35=65, NULL=6048, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4438c1ed=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a17b637=0, NULL=0, NULL=6041, NULL=0, tmp=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12aa1744=0, NULL=6026, NULL=0, NULL=0, NULL=0, NULL=6032, retValue_acc=1, NULL=6035, NULL=0, NULL=6025, tmp___2=65, NULL=0, tmp___0=0, splverifierCounter=0, NULL=0, \result=0, NULL=6030, NULL=6039, tmp=0, tmp___1=0, head=0, NULL=6046, NULL=0, NULL=0, NULL=6031, NULL=6037, NULL=6033, NULL=6050} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L62] int pumpRunning = 0; [L63] int systemActive = 1; [L371] int cleanupTimeShifts = 4; [L639] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L836] int waterLevel = 1; [L837] int methaneLevelCritical = 0; [L447] int retValue_acc ; [L448] int tmp ; [L951] int retValue_acc ; [L954] retValue_acc = 1 [L955] return (retValue_acc); [L454] tmp = valid_product() [L456] COND TRUE \read(tmp) [L268] int splverifierCounter ; [L269] int tmp ; [L270] int tmp___0 ; [L271] int tmp___1 ; [L272] int tmp___2 ; [L275] splverifierCounter = 0 Loop: [L277] COND TRUE 1 [L279] COND TRUE splverifierCounter < 4 [L285] tmp = __VERIFIER_nondet_int() [L287] COND FALSE !(\read(tmp)) [L295] tmp___0 = __VERIFIER_nondet_int() [L297] COND FALSE !(\read(tmp___0)) [L305] tmp___2 = __VERIFIER_nondet_int() [L307] COND TRUE \read(tmp___2) [L259] systemActive = 1 [L70] COND FALSE !(\read(pumpRunning)) [L77] COND TRUE \read(systemActive) [L125] int tmp ; [L128] COND FALSE !(\read(pumpRunning)) [L99] int tmp ; [L102] COND FALSE !(\read(pumpRunning)) [L338] int tmp ; [L339] int tmp___0 ; [L340] int tmp___1 ; [L875] int retValue_acc ; [L878] retValue_acc = methaneLevelCritical [L879] return (retValue_acc); [L344] tmp = isMethaneLevelCritical() [L346] COND FALSE !(\read(tmp)) [L907] int retValue_acc ; [L910] retValue_acc = waterLevel [L911] return (retValue_acc); [L350] tmp___0 = getWaterLevel() [L352] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...