./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product06.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_b95214f2-8fa2-4c60-a52e-d3895773eec9/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b95214f2-8fa2-4c60-a52e-d3895773eec9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b95214f2-8fa2-4c60-a52e-d3895773eec9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b95214f2-8fa2-4c60-a52e-d3895773eec9/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product06.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b95214f2-8fa2-4c60-a52e-d3895773eec9/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b95214f2-8fa2-4c60-a52e-d3895773eec9/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 daa9da8859207d10d864ef24e046b0be94d62d80 .............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:02:55,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:02:55,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:02:55,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:02:55,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:02:55,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:02:55,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:02:55,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:02:55,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:02:55,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:02:55,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:02:55,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:02:55,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:02:55,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:02:55,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:02:55,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:02:55,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:02:55,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:02:55,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:02:55,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:02:55,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:02:55,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:02:55,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:02:55,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:02:55,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:02:55,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:02:55,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:02:55,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:02:55,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:02:55,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:02:55,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:02:55,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:02:55,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:02:55,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:02:55,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:02:55,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:02:55,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:02:55,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:02:55,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:02:55,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:02:55,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:02:55,548 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b95214f2-8fa2-4c60-a52e-d3895773eec9/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 20:02:55,580 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:02:55,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:02:55,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:02:55,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:02:55,583 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:02:55,583 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 20:02:55,584 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 20:02:55,584 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 20:02:55,584 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 20:02:55,585 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 20:02:55,585 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 20:02:55,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:02:55,586 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:02:55,586 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:02:55,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:02:55,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:02:55,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:02:55,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 20:02:55,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 20:02:55,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 20:02:55,589 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:02:55,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:02:55,589 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 20:02:55,590 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:02:55,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 20:02:55,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:02:55,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:02:55,591 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 20:02:55,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:02:55,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:02:55,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:02:55,592 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 20:02:55,594 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 20:02:55,594 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_b95214f2-8fa2-4c60-a52e-d3895773eec9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b95214f2-8fa2-4c60-a52e-d3895773eec9/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> daa9da8859207d10d864ef24e046b0be94d62d80 [2020-11-29 20:02:55,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:02:55,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:02:55,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:02:55,980 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:02:55,981 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:02:55,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b95214f2-8fa2-4c60-a52e-d3895773eec9/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product06.cil.c [2020-11-29 20:02:56,097 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b95214f2-8fa2-4c60-a52e-d3895773eec9/bin/uautomizer/data/65d1e0a51/8d3c3239824d46bb90b3cedc2e91cf02/FLAG1d0c26fd0 [2020-11-29 20:02:56,777 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:02:56,777 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b95214f2-8fa2-4c60-a52e-d3895773eec9/sv-benchmarks/c/product-lines/minepump_spec3_product06.cil.c [2020-11-29 20:02:56,802 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b95214f2-8fa2-4c60-a52e-d3895773eec9/bin/uautomizer/data/65d1e0a51/8d3c3239824d46bb90b3cedc2e91cf02/FLAG1d0c26fd0 [2020-11-29 20:02:57,048 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b95214f2-8fa2-4c60-a52e-d3895773eec9/bin/uautomizer/data/65d1e0a51/8d3c3239824d46bb90b3cedc2e91cf02 [2020-11-29 20:02:57,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:02:57,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:02:57,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:02:57,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:02:57,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:02:57,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:02:57" (1/1) ... [2020-11-29 20:02:57,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be674ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:57, skipping insertion in model container [2020-11-29 20:02:57,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:02:57" (1/1) ... [2020-11-29 20:02:57,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:02:57,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:02:57,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:02:57,556 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:02:57,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:02:57,760 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:02:57,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:57 WrapperNode [2020-11-29 20:02:57,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:02:57,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:02:57,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:02:57,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:02:57,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:57" (1/1) ... [2020-11-29 20:02:57,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:57" (1/1) ... [2020-11-29 20:02:57,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:02:57,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:02:57,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:02:57,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:02:57,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:57" (1/1) ... [2020-11-29 20:02:57,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:57" (1/1) ... [2020-11-29 20:02:57,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:57" (1/1) ... [2020-11-29 20:02:57,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:57" (1/1) ... [2020-11-29 20:02:57,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:57" (1/1) ... [2020-11-29 20:02:57,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:57" (1/1) ... [2020-11-29 20:02:57,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:57" (1/1) ... [2020-11-29 20:02:57,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:02:57,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:02:57,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:02:57,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:02:57,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b95214f2-8fa2-4c60-a52e-d3895773eec9/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:02:58,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:02:58,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:02:58,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:02:58,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:02:59,245 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:02:59,246 INFO L298 CfgBuilder]: Removed 110 assume(true) statements. [2020-11-29 20:02:59,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:02:59 BoogieIcfgContainer [2020-11-29 20:02:59,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:02:59,250 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 20:02:59,250 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 20:02:59,254 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 20:02:59,255 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:02:59,255 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 08:02:57" (1/3) ... [2020-11-29 20:02:59,257 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@57ec4700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:02:59, skipping insertion in model container [2020-11-29 20:02:59,257 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:02:59,257 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:57" (2/3) ... [2020-11-29 20:02:59,258 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@57ec4700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:02:59, skipping insertion in model container [2020-11-29 20:02:59,258 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:02:59,259 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:02:59" (3/3) ... [2020-11-29 20:02:59,262 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product06.cil.c [2020-11-29 20:02:59,351 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 20:02:59,351 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 20:02:59,352 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 20:02:59,352 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:02:59,352 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:02:59,352 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 20:02:59,352 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:02:59,352 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 20:02:59,371 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 75 states. [2020-11-29 20:02:59,409 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2020-11-29 20:02:59,409 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:02:59,409 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:02:59,420 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:02:59,420 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:02:59,421 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 20:02:59,421 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 75 states. [2020-11-29 20:02:59,428 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2020-11-29 20:02:59,428 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:02:59,429 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:02:59,430 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:02:59,430 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:02:59,437 INFO L794 eck$LassoCheckResult]: Stem: 39#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~string31.base, #t~string31.offset := #Ultimate.allocOnStack(13);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string33.base, #t~string33.offset, 1);call write~init~int(77, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(101, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(116, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(104, #t~string33.base, 4 + #t~string33.offset, 1);call write~init~int(58, #t~string33.base, 5 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 6 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string35.base, #t~string35.offset, 1);call write~init~int(82, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(73, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(84, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 4 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(75, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(30);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string61.base, #t~string61.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(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(25);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 17#L-1true havoc main_#res;havoc main_#t~ret40, main_~retValue_acc~6, main_~tmp~2;havoc main_~retValue_acc~6;havoc main_~tmp~2; 24#L76true 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; 15#L84true main_#t~ret40 := valid_product_#res;main_~tmp~2 := main_#t~ret40;havoc main_#t~ret40; 43#L473true assume 0 != main_~tmp~2; 33#L450true havoc test_#t~nondet26, test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 44#L868-1true [2020-11-29 20:02:59,438 INFO L796 eck$LassoCheckResult]: Loop: 44#L868-1true assume !false; 50#L254true assume test_~splverifierCounter~0 < 4; 18#L255true test_~tmp~1 := test_#t~nondet26;havoc test_#t~nondet26; 9#L263true assume !(0 != test_~tmp~1); 5#L263-1true test_~tmp___0~0 := test_#t~nondet27;havoc test_#t~nondet27; 58#L273true assume !(0 != test_~tmp___0~0); 57#L273-1true test_~tmp___2~0 := test_#t~nondet28;havoc test_#t~nondet28; 46#L283true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 70#L291-2true assume !(0 != ~pumpRunning~0); 38#L106true assume !(0 != ~systemActive~0); 7#L113true havoc __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_~tmp~6, __utac_acc__Specification3_spec__1_~tmp___0~1, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~6;havoc __utac_acc__Specification3_spec__1_~tmp___0~1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 11#L354-1true __utac_acc__Specification3_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~6 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 66#L862true assume 0 != __utac_acc__Specification3_spec__1_~tmp~6; 44#L868-1true [2020-11-29 20:02:59,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:02:59,446 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-29 20:02:59,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:02:59,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715204807] [2020-11-29 20:02:59,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:02:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:02:59,768 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:02:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:02:59,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:02:59,918 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:02:59,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:02:59,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1680944970, now seen corresponding path program 1 times [2020-11-29 20:02:59,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:02:59,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010041705] [2020-11-29 20:02:59,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:02:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:59,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:02:59,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010041705] [2020-11-29 20:03:00,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:03:00,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:03:00,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345108613] [2020-11-29 20:03:00,012 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 20:03:00,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:03:00,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:03:00,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:03:00,040 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 3 states. [2020-11-29 20:03:00,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:03:00,160 INFO L93 Difference]: Finished difference Result 72 states and 98 transitions. [2020-11-29 20:03:00,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:03:00,163 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 98 transitions. [2020-11-29 20:03:00,176 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 43 [2020-11-29 20:03:00,191 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 65 states and 90 transitions. [2020-11-29 20:03:00,202 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65 [2020-11-29 20:03:00,203 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2020-11-29 20:03:00,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 90 transitions. [2020-11-29 20:03:00,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:03:00,206 INFO L691 BuchiCegarLoop]: Abstraction has 65 states and 90 transitions. [2020-11-29 20:03:00,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states and 90 transitions. [2020-11-29 20:03:00,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-11-29 20:03:00,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-29 20:03:00,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2020-11-29 20:03:00,247 INFO L714 BuchiCegarLoop]: Abstraction has 65 states and 90 transitions. [2020-11-29 20:03:00,247 INFO L594 BuchiCegarLoop]: Abstraction has 65 states and 90 transitions. [2020-11-29 20:03:00,247 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 20:03:00,248 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 65 states and 90 transitions. [2020-11-29 20:03:00,251 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 43 [2020-11-29 20:03:00,251 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:03:00,251 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:03:00,252 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:03:00,253 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:03:00,253 INFO L794 eck$LassoCheckResult]: Stem: 199#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~string31.base, #t~string31.offset := #Ultimate.allocOnStack(13);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string33.base, #t~string33.offset, 1);call write~init~int(77, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(101, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(116, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(104, #t~string33.base, 4 + #t~string33.offset, 1);call write~init~int(58, #t~string33.base, 5 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 6 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string35.base, #t~string35.offset, 1);call write~init~int(82, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(73, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(84, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 4 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(75, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(30);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string61.base, #t~string61.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(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(25);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 180#L-1 havoc main_#res;havoc main_#t~ret40, main_~retValue_acc~6, main_~tmp~2;havoc main_~retValue_acc~6;havoc main_~tmp~2; 181#L76 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; 177#L84 main_#t~ret40 := valid_product_#res;main_~tmp~2 := main_#t~ret40;havoc main_#t~ret40; 178#L473 assume 0 != main_~tmp~2; 189#L450 havoc test_#t~nondet26, test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 190#L868-1 [2020-11-29 20:03:00,254 INFO L796 eck$LassoCheckResult]: Loop: 190#L868-1 assume !false; 203#L254 assume test_~splverifierCounter~0 < 4; 182#L255 test_~tmp~1 := test_#t~nondet26;havoc test_#t~nondet26; 168#L263 assume !(0 != test_~tmp~1); 160#L263-1 test_~tmp___0~0 := test_#t~nondet27;havoc test_#t~nondet27; 161#L273 assume !(0 != test_~tmp___0~0); 212#L273-1 test_~tmp___2~0 := test_#t~nondet28;havoc test_#t~nondet28; 204#L283 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 205#L291-2 assume !(0 != ~pumpRunning~0); 198#L106 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~0;havoc processEnvironment_~tmp~0; 183#L138 assume !(0 != ~pumpRunning~0); 162#L113 havoc __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_~tmp~6, __utac_acc__Specification3_spec__1_~tmp___0~1, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~6;havoc __utac_acc__Specification3_spec__1_~tmp___0~1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 163#L354-1 __utac_acc__Specification3_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~6 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 170#L862 assume 0 != __utac_acc__Specification3_spec__1_~tmp~6; 190#L868-1 [2020-11-29 20:03:00,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:00,255 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-29 20:03:00,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:00,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470539588] [2020-11-29 20:03:00,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:00,351 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:00,488 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:00,532 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:00,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:00,533 INFO L82 PathProgramCache]: Analyzing trace with hash -590214418, now seen corresponding path program 1 times [2020-11-29 20:03:00,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:00,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663352535] [2020-11-29 20:03:00,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:00,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:00,547 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:00,553 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:00,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:00,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1012825108, now seen corresponding path program 1 times [2020-11-29 20:03:00,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:00,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793432444] [2020-11-29 20:03:00,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:00,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:03:00,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793432444] [2020-11-29 20:03:00,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:03:00,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:03:00,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849751483] [2020-11-29 20:03:00,850 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-11-29 20:03:00,966 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-11-29 20:03:00,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:03:00,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:03:00,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:03:00,979 INFO L87 Difference]: Start difference. First operand 65 states and 90 transitions. cyclomatic complexity: 27 Second operand 5 states. [2020-11-29 20:03:01,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:03:01,392 INFO L93 Difference]: Finished difference Result 211 states and 300 transitions. [2020-11-29 20:03:01,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:03:01,395 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 211 states and 300 transitions. [2020-11-29 20:03:01,409 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 145 [2020-11-29 20:03:01,414 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 211 states to 211 states and 300 transitions. [2020-11-29 20:03:01,414 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 211 [2020-11-29 20:03:01,416 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 211 [2020-11-29 20:03:01,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 211 states and 300 transitions. [2020-11-29 20:03:01,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:03:01,419 INFO L691 BuchiCegarLoop]: Abstraction has 211 states and 300 transitions. [2020-11-29 20:03:01,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states and 300 transitions. [2020-11-29 20:03:01,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 124. [2020-11-29 20:03:01,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-29 20:03:01,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 170 transitions. [2020-11-29 20:03:01,439 INFO L714 BuchiCegarLoop]: Abstraction has 124 states and 170 transitions. [2020-11-29 20:03:01,439 INFO L594 BuchiCegarLoop]: Abstraction has 124 states and 170 transitions. [2020-11-29 20:03:01,439 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 20:03:01,439 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 124 states and 170 transitions. [2020-11-29 20:03:01,443 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 86 [2020-11-29 20:03:01,443 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:03:01,443 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:03:01,444 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:03:01,445 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:03:01,445 INFO L794 eck$LassoCheckResult]: Stem: 497#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~string31.base, #t~string31.offset := #Ultimate.allocOnStack(13);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string33.base, #t~string33.offset, 1);call write~init~int(77, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(101, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(116, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(104, #t~string33.base, 4 + #t~string33.offset, 1);call write~init~int(58, #t~string33.base, 5 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 6 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string35.base, #t~string35.offset, 1);call write~init~int(82, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(73, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(84, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 4 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(75, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(30);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string61.base, #t~string61.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(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(25);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 475#L-1 havoc main_#res;havoc main_#t~ret40, main_~retValue_acc~6, main_~tmp~2;havoc main_~retValue_acc~6;havoc main_~tmp~2; 476#L76 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; 471#L84 main_#t~ret40 := valid_product_#res;main_~tmp~2 := main_#t~ret40;havoc main_#t~ret40; 472#L473 assume 0 != main_~tmp~2; 486#L450 havoc test_#t~nondet26, test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 487#L868-1 [2020-11-29 20:03:01,445 INFO L796 eck$LassoCheckResult]: Loop: 487#L868-1 assume !false; 502#L254 assume test_~splverifierCounter~0 < 4; 477#L255 test_~tmp~1 := test_#t~nondet26;havoc test_#t~nondet26; 460#L263 assume !(0 != test_~tmp~1); 454#L263-1 test_~tmp___0~0 := test_#t~nondet27;havoc test_#t~nondet27; 455#L273 assume !(0 != test_~tmp___0~0); 570#L273-1 test_~tmp___2~0 := test_#t~nondet28;havoc test_#t~nondet28; 569#L283 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 566#L291-2 assume !(0 != ~pumpRunning~0); 565#L106 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~0;havoc processEnvironment_~tmp~0; 478#L138 assume !(0 != ~pumpRunning~0); 479#L113 havoc __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_~tmp~6, __utac_acc__Specification3_spec__1_~tmp___0~1, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~6;havoc __utac_acc__Specification3_spec__1_~tmp___0~1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 548#L354-1 __utac_acc__Specification3_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~6 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 528#L862 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~6);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 529#L386 __utac_acc__Specification3_spec__1_#t~ret77 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~1 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 498#L868 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~1); 487#L868-1 [2020-11-29 20:03:01,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:01,446 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-29 20:03:01,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:01,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576429402] [2020-11-29 20:03:01,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:01,554 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:01,636 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:01,654 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:01,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:01,656 INFO L82 PathProgramCache]: Analyzing trace with hash -260366910, now seen corresponding path program 1 times [2020-11-29 20:03:01,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:01,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232400847] [2020-11-29 20:03:01,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:01,668 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:01,681 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:01,687 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:01,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:01,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1632641688, now seen corresponding path program 1 times [2020-11-29 20:03:01,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:01,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042707600] [2020-11-29 20:03:01,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:01,760 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:01,813 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:01,834 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:02,022 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-11-29 20:04:40,657 WARN L193 SmtUtils]: Spent 1.64 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-29 20:05:51,249 WARN L193 SmtUtils]: Spent 1.18 m on a formula simplification that was a NOOP. DAG size: 433 [2020-11-29 20:05:51,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 08:05:51 BoogieIcfgContainer [2020-11-29 20:05:51,611 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 20:05:51,611 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:05:51,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:05:51,612 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:05:51,613 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:02:59" (3/4) ... [2020-11-29 20:05:51,616 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 20:05:51,690 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b95214f2-8fa2-4c60-a52e-d3895773eec9/bin/uautomizer/witness.graphml [2020-11-29 20:05:51,691 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:05:51,693 INFO L168 Benchmark]: Toolchain (without parser) took 174637.86 ms. Allocated memory was 107.0 MB in the beginning and 136.3 MB in the end (delta: 29.4 MB). Free memory was 75.6 MB in the beginning and 100.0 MB in the end (delta: -24.4 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:05:51,694 INFO L168 Benchmark]: CDTParser took 0.94 ms. Allocated memory is still 86.0 MB. Free memory was 42.7 MB in the beginning and 42.7 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:05:51,695 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.83 ms. Allocated memory is still 107.0 MB. Free memory was 75.6 MB in the beginning and 75.2 MB in the end (delta: 422.7 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:05:51,695 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.70 ms. Allocated memory is still 107.0 MB. Free memory was 75.2 MB in the beginning and 72.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:05:51,696 INFO L168 Benchmark]: Boogie Preprocessor took 91.76 ms. Allocated memory is still 107.0 MB. Free memory was 72.6 MB in the beginning and 70.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:05:51,697 INFO L168 Benchmark]: RCFGBuilder took 1278.94 ms. Allocated memory is still 107.0 MB. Free memory was 70.5 MB in the beginning and 70.2 MB in the end (delta: 282.4 kB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:05:51,698 INFO L168 Benchmark]: BuchiAutomizer took 172361.14 ms. Allocated memory was 107.0 MB in the beginning and 136.3 MB in the end (delta: 29.4 MB). Free memory was 70.2 MB in the beginning and 102.1 MB in the end (delta: -31.9 MB). Peak memory consumption was 73.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:05:51,699 INFO L168 Benchmark]: Witness Printer took 79.60 ms. Allocated memory is still 136.3 MB. Free memory was 102.1 MB in the beginning and 100.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:05:51,703 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.94 ms. Allocated memory is still 86.0 MB. Free memory was 42.7 MB in the beginning and 42.7 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 704.83 ms. Allocated memory is still 107.0 MB. Free memory was 75.6 MB in the beginning and 75.2 MB in the end (delta: 422.7 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 108.70 ms. Allocated memory is still 107.0 MB. Free memory was 75.2 MB in the beginning and 72.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 91.76 ms. Allocated memory is still 107.0 MB. Free memory was 72.6 MB in the beginning and 70.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1278.94 ms. Allocated memory is still 107.0 MB. Free memory was 70.5 MB in the beginning and 70.2 MB in the end (delta: 282.4 kB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 172361.14 ms. Allocated memory was 107.0 MB in the beginning and 136.3 MB in the end (delta: 29.4 MB). Free memory was 70.2 MB in the beginning and 102.1 MB in the end (delta: -31.9 MB). Peak memory consumption was 73.6 MB. Max. memory is 16.1 GB. * Witness Printer took 79.60 ms. Allocated memory is still 136.3 MB. Free memory was 102.1 MB in the beginning and 100.0 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 124 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 172.2s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 171.4s. Construction of modules took 0.3s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 87 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 124 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 205 SDtfs, 399 SDslu, 325 SDs, 0 SdLazy, 82 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 253]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=12874} State at position 1 is {NULL=12896, NULL=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@62e0f8de=0, NULL=12874, NULL=12891, retValue_acc=0, NULL=0, NULL=0, NULL=12888, NULL=12903, NULL=12897, NULL=12889, methaneLevelCritical=0, NULL=12900, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f45d12f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@13ace753=0, NULL=0, NULL=0, NULL=12893, NULL=12892, tmp___1=0, NULL=12883, NULL=0, NULL=0, NULL=12904, cleanupTimeShifts=4, tmp=0, NULL=12894, NULL=12887, NULL=12881, tmp___0=1, tmp=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, NULL=12898, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4c484e4a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@394be090=0, retValue_acc=0, tmp___0=0, NULL=12877, NULL=12895, \result=1, head=0, pumpRunning=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ac78192=0, NULL=12879, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7eba9b34=76, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a4e2cf2=0, NULL=0, tmp=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1d72bcc9=0, NULL=0, NULL=0, NULL=12905, NULL=0, NULL=12899, NULL=0, NULL=0, NULL=0, NULL=12875, retValue_acc=1, tmp___2=76, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=12890, NULL=12880, NULL=12886, tmp=0, NULL=12901, tmp___1=0, head=0, NULL=12878, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=12882, NULL=12876} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L98] int pumpRunning = 0; [L99] int systemActive = 1; [L311] int waterLevel = 1; [L312] int methaneLevelCritical = 0; [L391] int cleanupTimeShifts = 4; [L656] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L464] int retValue_acc ; [L465] int tmp ; [L80] int retValue_acc ; [L83] retValue_acc = 1 [L84] return (retValue_acc); [L471] tmp = valid_product() [L473] COND TRUE \read(tmp) [L244] int splverifierCounter ; [L245] int tmp ; [L246] int tmp___0 ; [L247] int tmp___1 ; [L248] int tmp___2 ; [L251] splverifierCounter = 0 Loop: [L253] COND TRUE 1 [L255] COND TRUE splverifierCounter < 4 [L261] tmp = __VERIFIER_nondet_int() [L263] COND FALSE !(\read(tmp)) [L271] tmp___0 = __VERIFIER_nondet_int() [L273] COND FALSE !(\read(tmp___0)) [L281] tmp___2 = __VERIFIER_nondet_int() [L283] COND TRUE \read(tmp___2) [L235] systemActive = 1 [L106] COND FALSE !(\read(pumpRunning)) [L113] COND TRUE \read(systemActive) [L135] int tmp ; [L138] COND FALSE !(\read(pumpRunning)) [L854] int tmp ; [L855] int tmp___0 ; [L856] int tmp___1 ; [L350] int retValue_acc ; [L353] retValue_acc = methaneLevelCritical [L354] return (retValue_acc); [L860] tmp = isMethaneLevelCritical() [L862] COND FALSE !(\read(tmp)) [L382] int retValue_acc ; [L385] retValue_acc = waterLevel [L386] return (retValue_acc); [L866] tmp___0 = getWaterLevel() [L868] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...