./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product18.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_39dbd39f-f3b1-4e05-8f43-2f7d0d5892c4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_39dbd39f-f3b1-4e05-8f43-2f7d0d5892c4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_39dbd39f-f3b1-4e05-8f43-2f7d0d5892c4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_39dbd39f-f3b1-4e05-8f43-2f7d0d5892c4/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product18.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_39dbd39f-f3b1-4e05-8f43-2f7d0d5892c4/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_39dbd39f-f3b1-4e05-8f43-2f7d0d5892c4/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 e775674397a9c2f1915fc4aeec4057e4316f59fc ............................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 00:46:50,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:46:50,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:46:50,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:46:50,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:46:50,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:46:50,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:46:50,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:46:50,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:46:50,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:46:50,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:46:50,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:46:50,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:46:50,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:46:50,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:46:50,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:46:50,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:46:50,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:46:50,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:46:50,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:46:50,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:46:50,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:46:50,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:46:50,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:46:50,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:46:50,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:46:50,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:46:50,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:46:50,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:46:50,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:46:50,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:46:50,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:46:50,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:46:50,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:46:50,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:46:50,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:46:50,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:46:50,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:46:50,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:46:50,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:46:50,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:46:50,789 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_39dbd39f-f3b1-4e05-8f43-2f7d0d5892c4/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 00:46:50,821 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:46:50,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:46:50,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:46:50,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:46:50,824 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:46:50,824 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:46:50,824 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:46:50,825 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:46:50,825 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:46:50,825 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:46:50,825 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:46:50,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:46:50,826 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:46:50,826 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:46:50,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:46:50,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:46:50,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:46:50,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:46:50,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:46:50,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:46:50,828 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:46:50,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:46:50,829 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:46:50,829 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:46:50,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:46:50,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:46:50,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:46:50,830 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:46:50,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:46:50,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:46:50,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:46:50,831 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:46:50,833 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:46:50,833 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_39dbd39f-f3b1-4e05-8f43-2f7d0d5892c4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_39dbd39f-f3b1-4e05-8f43-2f7d0d5892c4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e775674397a9c2f1915fc4aeec4057e4316f59fc [2020-11-30 00:46:51,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:46:51,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:46:51,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:46:51,296 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:46:51,297 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:46:51,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_39dbd39f-f3b1-4e05-8f43-2f7d0d5892c4/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product18.cil.c [2020-11-30 00:46:51,393 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_39dbd39f-f3b1-4e05-8f43-2f7d0d5892c4/bin/uautomizer/data/5b86e930d/f7b0c228a49743bd92a4743b9ce2cf3c/FLAGae78a84d4 [2020-11-30 00:46:52,242 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:46:52,243 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_39dbd39f-f3b1-4e05-8f43-2f7d0d5892c4/sv-benchmarks/c/product-lines/minepump_spec3_product18.cil.c [2020-11-30 00:46:52,274 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_39dbd39f-f3b1-4e05-8f43-2f7d0d5892c4/bin/uautomizer/data/5b86e930d/f7b0c228a49743bd92a4743b9ce2cf3c/FLAGae78a84d4 [2020-11-30 00:46:52,462 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_39dbd39f-f3b1-4e05-8f43-2f7d0d5892c4/bin/uautomizer/data/5b86e930d/f7b0c228a49743bd92a4743b9ce2cf3c [2020-11-30 00:46:52,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:46:52,468 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:46:52,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:46:52,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:46:52,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:46:52,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:46:52" (1/1) ... [2020-11-30 00:46:52,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16520375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:52, skipping insertion in model container [2020-11-30 00:46:52,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:46:52" (1/1) ... [2020-11-30 00:46:52,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:46:52,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:46:52,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:46:53,007 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:46:53,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:46:53,213 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:46:53,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:53 WrapperNode [2020-11-30 00:46:53,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:46:53,220 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:46:53,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:46:53,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:46:53,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:53" (1/1) ... [2020-11-30 00:46:53,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:53" (1/1) ... [2020-11-30 00:46:53,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:46:53,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:46:53,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:46:53,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:46:53,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:53" (1/1) ... [2020-11-30 00:46:53,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:53" (1/1) ... [2020-11-30 00:46:53,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:53" (1/1) ... [2020-11-30 00:46:53,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:53" (1/1) ... [2020-11-30 00:46:53,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:53" (1/1) ... [2020-11-30 00:46:53,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:53" (1/1) ... [2020-11-30 00:46:53,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:53" (1/1) ... [2020-11-30 00:46:53,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:46:53,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:46:53,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:46:53,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:46:53,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_39dbd39f-f3b1-4e05-8f43-2f7d0d5892c4/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 00:46:53,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:46:53,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:46:53,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:46:53,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:46:54,777 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:46:54,778 INFO L298 CfgBuilder]: Removed 110 assume(true) statements. [2020-11-30 00:46:54,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:46:54 BoogieIcfgContainer [2020-11-30 00:46:54,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:46:54,782 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:46:54,782 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:46:54,787 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:46:54,788 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:46:54,789 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:46:52" (1/3) ... [2020-11-30 00:46:54,791 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2254d595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:46:54, skipping insertion in model container [2020-11-30 00:46:54,791 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:46:54,791 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:53" (2/3) ... [2020-11-30 00:46:54,792 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2254d595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:46:54, skipping insertion in model container [2020-11-30 00:46:54,792 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:46:54,792 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:46:54" (3/3) ... [2020-11-30 00:46:54,795 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product18.cil.c [2020-11-30 00:46:54,855 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:46:54,855 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:46:54,855 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:46:54,856 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:46:54,856 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:46:54,856 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:46:54,856 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:46:54,856 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:46:54,876 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 81 states. [2020-11-30 00:46:54,913 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2020-11-30 00:46:54,914 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:46:54,914 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:46:54,925 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:46:54,925 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:46:54,926 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:46:54,926 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 81 states. [2020-11-30 00:46:54,933 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2020-11-30 00:46:54,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:46:54,934 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:46:54,935 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:46:54,935 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:46:54,942 INFO L794 eck$LassoCheckResult]: Stem: 45#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(13);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(110, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string60.base, #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 2 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 3 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string62.base, #t~string62.offset, 1);call write~init~int(80, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(117, #t~string62.base, 2 + #t~string62.offset, 1);call write~init~int(109, #t~string62.base, 3 + #t~string62.offset, 1);call write~init~int(112, #t~string62.base, 4 + #t~string62.offset, 1);call write~init~int(58, #t~string62.base, 5 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 6 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string68.base, #t~string68.offset, 1);call write~init~int(32, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string70.base, #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 1 + #t~string70.offset, 1);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 12#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 50#L860true 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; 57#L868true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 55#L132true assume 0 != main_~tmp~0; 75#L105true havoc test_#t~nondet72, test_#t~nondet73, test_#t~nondet74, test_#t~nondet75, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 34#L889-1true [2020-11-30 00:46:54,943 INFO L796 eck$LassoCheckResult]: Loop: 34#L889-1true assume !false; 5#L782true assume test_~splverifierCounter~0 < 4; 56#L783true test_~tmp~6 := test_#t~nondet72;havoc test_#t~nondet72; 59#L791true assume !(0 != test_~tmp~6); 60#L791-1true test_~tmp___0~1 := test_#t~nondet73;havoc test_#t~nondet73; 36#L801true assume !(0 != test_~tmp___0~1); 38#L801-1true test_~tmp___2~0 := test_#t~nondet74;havoc test_#t~nondet74; 10#L811true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 23#L819-2true assume !(0 != ~pumpRunning~0); 41#L618true assume !(0 != ~systemActive~0); 24#L625true havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;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~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 52#L194true __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 65#L883true assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 34#L889-1true [2020-11-30 00:46:54,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:54,950 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2020-11-30 00:46:54,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:54,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826076310] [2020-11-30 00:46:54,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:55,305 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:55,473 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:55,547 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:55,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:55,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1680729482, now seen corresponding path program 1 times [2020-11-30 00:46:55,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:55,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869410011] [2020-11-30 00:46:55,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:55,670 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 00:46:55,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869410011] [2020-11-30 00:46:55,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:46:55,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:46:55,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33134659] [2020-11-30 00:46:55,681 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:46:55,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:46:55,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:46:55,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:46:55,706 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 3 states. [2020-11-30 00:46:55,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:46:55,777 INFO L93 Difference]: Finished difference Result 78 states and 107 transitions. [2020-11-30 00:46:55,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:46:55,784 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 107 transitions. [2020-11-30 00:46:55,794 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2020-11-30 00:46:55,804 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 71 states and 99 transitions. [2020-11-30 00:46:55,810 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 71 [2020-11-30 00:46:55,811 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 71 [2020-11-30 00:46:55,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 99 transitions. [2020-11-30 00:46:55,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:46:55,814 INFO L691 BuchiCegarLoop]: Abstraction has 71 states and 99 transitions. [2020-11-30 00:46:55,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states and 99 transitions. [2020-11-30 00:46:55,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-11-30 00:46:55,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-30 00:46:55,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 99 transitions. [2020-11-30 00:46:55,867 INFO L714 BuchiCegarLoop]: Abstraction has 71 states and 99 transitions. [2020-11-30 00:46:55,867 INFO L594 BuchiCegarLoop]: Abstraction has 71 states and 99 transitions. [2020-11-30 00:46:55,867 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:46:55,868 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states and 99 transitions. [2020-11-30 00:46:55,877 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2020-11-30 00:46:55,878 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:46:55,878 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:46:55,879 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:46:55,880 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:46:55,880 INFO L794 eck$LassoCheckResult]: Stem: 222#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(13);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(110, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string60.base, #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 2 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 3 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string62.base, #t~string62.offset, 1);call write~init~int(80, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(117, #t~string62.base, 2 + #t~string62.offset, 1);call write~init~int(109, #t~string62.base, 3 + #t~string62.offset, 1);call write~init~int(112, #t~string62.base, 4 + #t~string62.offset, 1);call write~init~int(58, #t~string62.base, 5 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 6 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string68.base, #t~string68.offset, 1);call write~init~int(32, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string70.base, #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 1 + #t~string70.offset, 1);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 190#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 191#L860 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; 226#L868 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 228#L132 assume 0 != main_~tmp~0; 229#L105 havoc test_#t~nondet72, test_#t~nondet73, test_#t~nondet74, test_#t~nondet75, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 207#L889-1 [2020-11-30 00:46:55,881 INFO L796 eck$LassoCheckResult]: Loop: 207#L889-1 assume !false; 174#L782 assume test_~splverifierCounter~0 < 4; 175#L783 test_~tmp~6 := test_#t~nondet72;havoc test_#t~nondet72; 230#L791 assume !(0 != test_~tmp~6); 218#L791-1 test_~tmp___0~1 := test_#t~nondet73;havoc test_#t~nondet73; 211#L801 assume !(0 != test_~tmp___0~1); 212#L801-1 test_~tmp___2~0 := test_#t~nondet74;havoc test_#t~nondet74; 183#L811 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 184#L819-2 assume !(0 != ~pumpRunning~0); 182#L618 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret53, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 186#L650 assume !(0 != ~pumpRunning~0); 173#L625 havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;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~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 201#L194 __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 227#L883 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 207#L889-1 [2020-11-30 00:46:55,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:55,882 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2020-11-30 00:46:55,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:55,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199750822] [2020-11-30 00:46:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:56,028 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:56,095 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:56,117 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:56,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:56,119 INFO L82 PathProgramCache]: Analyzing trace with hash -589998930, now seen corresponding path program 1 times [2020-11-30 00:46:56,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:56,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394578573] [2020-11-30 00:46:56,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:56,127 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:56,133 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:56,139 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:56,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:56,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1013040596, now seen corresponding path program 1 times [2020-11-30 00:46:56,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:56,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871264130] [2020-11-30 00:46:56,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:56,250 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 00:46:56,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871264130] [2020-11-30 00:46:56,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:46:56,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:46:56,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433277557] [2020-11-30 00:46:56,380 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-11-30 00:46:56,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:46:56,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:46:56,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:46:56,500 INFO L87 Difference]: Start difference. First operand 71 states and 99 transitions. cyclomatic complexity: 30 Second operand 5 states. [2020-11-30 00:46:56,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:46:56,741 INFO L93 Difference]: Finished difference Result 241 states and 345 transitions. [2020-11-30 00:46:56,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:46:56,743 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 241 states and 345 transitions. [2020-11-30 00:46:56,749 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 168 [2020-11-30 00:46:56,760 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 241 states to 241 states and 345 transitions. [2020-11-30 00:46:56,760 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 241 [2020-11-30 00:46:56,761 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 241 [2020-11-30 00:46:56,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 241 states and 345 transitions. [2020-11-30 00:46:56,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:46:56,769 INFO L691 BuchiCegarLoop]: Abstraction has 241 states and 345 transitions. [2020-11-30 00:46:56,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states and 345 transitions. [2020-11-30 00:46:56,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 136. [2020-11-30 00:46:56,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-30 00:46:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 188 transitions. [2020-11-30 00:46:56,791 INFO L714 BuchiCegarLoop]: Abstraction has 136 states and 188 transitions. [2020-11-30 00:46:56,791 INFO L594 BuchiCegarLoop]: Abstraction has 136 states and 188 transitions. [2020-11-30 00:46:56,791 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:46:56,791 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 136 states and 188 transitions. [2020-11-30 00:46:56,800 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 94 [2020-11-30 00:46:56,800 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:46:56,801 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:46:56,802 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:46:56,802 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:46:56,803 INFO L794 eck$LassoCheckResult]: Stem: 557#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(13);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(110, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string60.base, #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 2 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 3 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string62.base, #t~string62.offset, 1);call write~init~int(80, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(117, #t~string62.base, 2 + #t~string62.offset, 1);call write~init~int(109, #t~string62.base, 3 + #t~string62.offset, 1);call write~init~int(112, #t~string62.base, 4 + #t~string62.offset, 1);call write~init~int(58, #t~string62.base, 5 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 6 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string68.base, #t~string68.offset, 1);call write~init~int(32, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string70.base, #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 1 + #t~string70.offset, 1);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 518#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 519#L860 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; 565#L868 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 569#L132 assume 0 != main_~tmp~0; 570#L105 havoc test_#t~nondet72, test_#t~nondet73, test_#t~nondet74, test_#t~nondet75, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 590#L889-1 [2020-11-30 00:46:56,803 INFO L796 eck$LassoCheckResult]: Loop: 590#L889-1 assume !false; 616#L782 assume test_~splverifierCounter~0 < 4; 571#L783 test_~tmp~6 := test_#t~nondet72;havoc test_#t~nondet72; 572#L791 assume !(0 != test_~tmp~6); 552#L791-1 test_~tmp___0~1 := test_#t~nondet73;havoc test_#t~nondet73; 573#L801 assume !(0 != test_~tmp___0~1); 630#L801-1 test_~tmp___2~0 := test_#t~nondet74;havoc test_#t~nondet74; 629#L811 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 624#L819-2 assume !(0 != ~pumpRunning~0); 622#L618 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret53, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 620#L650 assume !(0 != ~pumpRunning~0); 618#L625 havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;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~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 567#L194 __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 568#L883 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~7);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~2;havoc getWaterLevel_~retValue_acc~2;getWaterLevel_~retValue_acc~2 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~2; 533#L226 __utac_acc__Specification3_spec__1_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 534#L889 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 590#L889-1 [2020-11-30 00:46:56,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:56,806 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2020-11-30 00:46:56,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:56,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840450292] [2020-11-30 00:46:56,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:56,905 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:56,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:57,002 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:57,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:57,003 INFO L82 PathProgramCache]: Analyzing trace with hash -53282718, now seen corresponding path program 1 times [2020-11-30 00:46:57,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:57,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949621695] [2020-11-30 00:46:57,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:57,011 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:57,015 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:57,021 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:57,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:57,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1425557496, now seen corresponding path program 1 times [2020-11-30 00:46:57,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:57,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838082961] [2020-11-30 00:46:57,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:57,105 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:57,158 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:57,181 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:57,332 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-11-30 00:48:44,693 WARN L193 SmtUtils]: Spent 1.79 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2020-11-30 00:49:55,594 WARN L193 SmtUtils]: Spent 1.18 m on a formula simplification that was a NOOP. DAG size: 433 [2020-11-30 00:49:55,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:49:55 BoogieIcfgContainer [2020-11-30 00:49:55,943 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:49:55,944 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:49:55,944 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:49:55,944 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:49:55,945 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:46:54" (3/4) ... [2020-11-30 00:49:55,948 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 00:49:56,048 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_39dbd39f-f3b1-4e05-8f43-2f7d0d5892c4/bin/uautomizer/witness.graphml [2020-11-30 00:49:56,058 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:49:56,061 INFO L168 Benchmark]: Toolchain (without parser) took 183592.16 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 96.6 MB in the beginning and 43.9 MB in the end (delta: 52.7 MB). Peak memory consumption was 78.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:49:56,062 INFO L168 Benchmark]: CDTParser took 1.07 ms. Allocated memory is still 88.1 MB. Free memory was 45.8 MB in the beginning and 45.8 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:49:56,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.05 ms. Allocated memory is still 127.9 MB. Free memory was 96.3 MB in the beginning and 92.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:49:56,064 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.05 ms. Allocated memory is still 127.9 MB. Free memory was 92.6 MB in the beginning and 89.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:49:56,065 INFO L168 Benchmark]: Boogie Preprocessor took 49.79 ms. Allocated memory is still 127.9 MB. Free memory was 89.5 MB in the beginning and 87.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:49:56,066 INFO L168 Benchmark]: RCFGBuilder took 1418.68 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 87.4 MB in the beginning and 104.7 MB in the end (delta: -17.3 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:49:56,078 INFO L168 Benchmark]: BuchiAutomizer took 181161.23 ms. Allocated memory is still 155.2 MB. Free memory was 104.7 MB in the beginning and 46.0 MB in the end (delta: 58.7 MB). Peak memory consumption was 69.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:49:56,079 INFO L168 Benchmark]: Witness Printer took 114.89 ms. Allocated memory is still 155.2 MB. Free memory was 46.0 MB in the beginning and 43.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:49:56,085 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.07 ms. Allocated memory is still 88.1 MB. Free memory was 45.8 MB in the beginning and 45.8 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 741.05 ms. Allocated memory is still 127.9 MB. Free memory was 96.3 MB in the beginning and 92.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.05 ms. Allocated memory is still 127.9 MB. Free memory was 92.6 MB in the beginning and 89.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.79 ms. Allocated memory is still 127.9 MB. Free memory was 89.5 MB in the beginning and 87.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1418.68 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 87.4 MB in the beginning and 104.7 MB in the end (delta: -17.3 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 181161.23 ms. Allocated memory is still 155.2 MB. Free memory was 104.7 MB in the beginning and 46.0 MB in the end (delta: 58.7 MB). Peak memory consumption was 69.5 MB. Max. memory is 16.1 GB. * Witness Printer took 114.89 ms. Allocated memory is still 155.2 MB. Free memory was 46.0 MB in the beginning and 43.9 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 136 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 181.0s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 180.4s. Construction of modules took 0.1s. 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, 105 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 136 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 239 SDtfs, 466 SDslu, 400 SDs, 0 SdLazy, 46 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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: 781]: 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=31235, retValue_acc=0, NULL=0, NULL=0, NULL=0, NULL=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@127017ab=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f291023=0, NULL=12874, NULL=31247, NULL=0, NULL=0, NULL=0, NULL=0, NULL=31241, NULL=12882, NULL=31253, NULL=31238, methaneLevelCritical=0, NULL=31242, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@63cb8a68=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3d8f5a7=0, NULL=31251, NULL=0, tmp=0, NULL=0, NULL=12877, tmp___1=0, NULL=0, NULL=0, NULL=31236, NULL=31252, cleanupTimeShifts=4, NULL=12879, NULL=12880, NULL=31244, tmp=0, tmp___0=1, NULL=0, systemActive=1, waterLevel=1, \result=1, NULL=0, NULL=12878, NULL=0, NULL=31246, NULL=0, retValue_acc=1, NULL=31249, NULL=0, NULL=0, NULL=12881, \result=1, head=0, pumpRunning=0, tmp=1, NULL=31237, \result=0, NULL=0, NULL=31250, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a0326c3=0, NULL=0, NULL=31245, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@453effc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7dec6c26=64, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@32788af=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@61bea324=0, NULL=12876, tmp___2=64, tmp___0=0, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=12875, NULL=31243, NULL=31248, tmp___1=0, head=0, tmp=0, NULL=0, NULL=0, NULL=31239, NULL=0, NULL=0, NULL=31240, NULL=31234, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L42] int cleanupTimeShifts = 4; [L151] int waterLevel = 1; [L152] int methaneLevelCritical = 0; [L409] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L610] int pumpRunning = 0; [L611] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L864] int retValue_acc ; [L867] retValue_acc = 1 [L868] return (retValue_acc); [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L772] int splverifierCounter ; [L773] int tmp ; [L774] int tmp___0 ; [L775] int tmp___1 ; [L776] int tmp___2 ; [L779] splverifierCounter = 0 Loop: [L781] COND TRUE 1 [L783] COND TRUE splverifierCounter < 4 [L789] tmp = __VERIFIER_nondet_int() [L791] COND FALSE !(\read(tmp)) [L799] tmp___0 = __VERIFIER_nondet_int() [L801] COND FALSE !(\read(tmp___0)) [L809] tmp___2 = __VERIFIER_nondet_int() [L811] COND TRUE \read(tmp___2) [L766] systemActive = 1 [L618] COND FALSE !(\read(pumpRunning)) [L625] COND TRUE \read(systemActive) [L647] int tmp ; [L650] COND FALSE !(\read(pumpRunning)) [L875] int tmp ; [L876] int tmp___0 ; [L877] int tmp___1 ; [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); [L881] tmp = isMethaneLevelCritical() [L883] COND FALSE !(\read(tmp)) [L222] int retValue_acc ; [L225] retValue_acc = waterLevel [L226] return (retValue_acc); [L887] tmp___0 = getWaterLevel() [L889] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...