./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product61.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_698d8491-e4dd-4aee-827c-c83067fd010d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_698d8491-e4dd-4aee-827c-c83067fd010d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_698d8491-e4dd-4aee-827c-c83067fd010d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_698d8491-e4dd-4aee-827c-c83067fd010d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product61.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_698d8491-e4dd-4aee-827c-c83067fd010d/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_698d8491-e4dd-4aee-827c-c83067fd010d/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 54addd62801479259ccbf9158d3d6aa338ff21ad ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:01:48,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:01:48,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:01:48,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:01:48,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:01:48,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:01:48,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:01:48,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:01:48,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:01:48,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:01:48,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:01:48,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:01:48,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:01:48,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:01:48,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:01:48,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:01:48,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:01:48,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:01:48,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:01:48,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:01:48,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:01:48,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:01:48,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:01:48,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:01:48,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:01:48,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:01:48,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:01:48,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:01:48,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:01:48,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:01:48,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:01:48,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:01:48,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:01:48,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:01:48,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:01:48,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:01:48,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:01:48,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:01:48,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:01:48,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:01:48,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:01:48,875 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_698d8491-e4dd-4aee-827c-c83067fd010d/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 01:01:48,906 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:01:48,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:01:48,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:01:48,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:01:48,908 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:01:48,908 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 01:01:48,909 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 01:01:48,909 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 01:01:48,909 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 01:01:48,909 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 01:01:48,909 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 01:01:48,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:01:48,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:01:48,910 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:01:48,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:01:48,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:01:48,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:01:48,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 01:01:48,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 01:01:48,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 01:01:48,912 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:01:48,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:01:48,912 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 01:01:48,912 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:01:48,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 01:01:48,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:01:48,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:01:48,913 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 01:01:48,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:01:48,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:01:48,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:01:48,914 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 01:01:48,915 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 01:01:48,916 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_698d8491-e4dd-4aee-827c-c83067fd010d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_698d8491-e4dd-4aee-827c-c83067fd010d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54addd62801479259ccbf9158d3d6aa338ff21ad [2020-11-30 01:01:49,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:01:49,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:01:49,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:01:49,261 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:01:49,262 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:01:49,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_698d8491-e4dd-4aee-827c-c83067fd010d/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec5_product61.cil.c [2020-11-30 01:01:49,362 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_698d8491-e4dd-4aee-827c-c83067fd010d/bin/uautomizer/data/78a7f8e5e/a2b6174585a645d9970e9bd01d280885/FLAG660e30107 [2020-11-30 01:01:49,948 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:01:49,949 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_698d8491-e4dd-4aee-827c-c83067fd010d/sv-benchmarks/c/product-lines/minepump_spec5_product61.cil.c [2020-11-30 01:01:49,965 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_698d8491-e4dd-4aee-827c-c83067fd010d/bin/uautomizer/data/78a7f8e5e/a2b6174585a645d9970e9bd01d280885/FLAG660e30107 [2020-11-30 01:01:50,250 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_698d8491-e4dd-4aee-827c-c83067fd010d/bin/uautomizer/data/78a7f8e5e/a2b6174585a645d9970e9bd01d280885 [2020-11-30 01:01:50,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:01:50,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:01:50,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:01:50,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:01:50,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:01:50,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:50,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@590a4270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50, skipping insertion in model container [2020-11-30 01:01:50,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:50,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:01:50,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:01:50,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:01:50,718 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:01:50,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:01:50,934 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:01:50,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50 WrapperNode [2020-11-30 01:01:50,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:01:50,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:01:50,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:01:50,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:01:50,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:50,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:51,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:01:51,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:01:51,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:01:51,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:01:51,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:51,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:51,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:51,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:51,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:51,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:51,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... [2020-11-30 01:01:51,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:01:51,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:01:51,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:01:51,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:01:51,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_698d8491-e4dd-4aee-827c-c83067fd010d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:01:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:01:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:01:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:01:51,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:01:52,846 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:01:52,846 INFO L298 CfgBuilder]: Removed 368 assume(true) statements. [2020-11-30 01:01:52,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:01:52 BoogieIcfgContainer [2020-11-30 01:01:52,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:01:52,850 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 01:01:52,851 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 01:01:52,855 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 01:01:52,856 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:01:52,856 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 01:01:50" (1/3) ... [2020-11-30 01:01:52,858 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@28981fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:01:52, skipping insertion in model container [2020-11-30 01:01:52,858 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:01:52,858 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:01:50" (2/3) ... [2020-11-30 01:01:52,859 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@28981fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:01:52, skipping insertion in model container [2020-11-30 01:01:52,859 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:01:52,860 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:01:52" (3/3) ... [2020-11-30 01:01:52,861 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product61.cil.c [2020-11-30 01:01:52,918 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 01:01:52,919 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 01:01:52,919 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 01:01:52,919 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:01:52,919 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:01:52,920 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 01:01:52,920 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:01:52,920 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 01:01:52,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 234 states. [2020-11-30 01:01:52,985 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 153 [2020-11-30 01:01:52,986 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:01:52,986 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:01:53,002 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:53,002 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:53,002 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 01:01:53,003 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 234 states. [2020-11-30 01:01:53,030 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 153 [2020-11-30 01:01:53,030 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:01:53,030 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:01:53,034 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:53,034 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:53,049 INFO L794 eck$LassoCheckResult]: Stem: 75#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);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(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4; 5#L-1true havoc main_#res;havoc main_#t~ret83, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 119#L910true havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 26#L918true main_#t~ret83 := valid_product_#res;main_~tmp~11 := main_#t~ret83;havoc main_#t~ret83; 211#L1015true assume 0 != main_~tmp~11; 72#L991true ~switchedOnBeforeTS~0 := 0; 98#L842true havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 8#L863-1true [2020-11-30 01:01:53,050 INFO L796 eck$LassoCheckResult]: Loop: 8#L863-1true assume !false; 234#L57true assume test_~splverifierCounter~0 < 4; 150#L58true test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 80#L66true assume !(0 != test_~tmp~0); 78#L66-1true test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 16#L76true assume !(0 != test_~tmp___0~0); 11#L76-1true test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 41#L86true assume 0 != test_~tmp___2~0; 24#L92-2true havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 69#L286true __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 7#L852true assume !(0 != ~pumpRunning~0); 88#L132true assume !(0 != ~systemActive~0); 141#L139true havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~10, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~10;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;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; 147#L441true __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~10 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 28#L863true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~10); 8#L863-1true [2020-11-30 01:01:53,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:53,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2020-11-30 01:01:53,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:53,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494048932] [2020-11-30 01:01:53,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:53,427 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:53,539 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:53,621 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:01:53,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:53,623 INFO L82 PathProgramCache]: Analyzing trace with hash 100753902, now seen corresponding path program 1 times [2020-11-30 01:01:53,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:53,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660185891] [2020-11-30 01:01:53,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:53,639 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:53,648 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:53,656 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:01:53,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:53,658 INFO L82 PathProgramCache]: Analyzing trace with hash 2034779112, now seen corresponding path program 1 times [2020-11-30 01:01:53,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:53,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109594770] [2020-11-30 01:01:53,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:53,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109594770] [2020-11-30 01:01:53,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:53,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:01:53,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849651918] [2020-11-30 01:01:53,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:54,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:01:54,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:01:54,009 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 6 states. [2020-11-30 01:01:54,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:54,344 INFO L93 Difference]: Finished difference Result 231 states and 334 transitions. [2020-11-30 01:01:54,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:01:54,346 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 231 states and 334 transitions. [2020-11-30 01:01:54,353 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2020-11-30 01:01:54,363 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 231 states to 224 states and 327 transitions. [2020-11-30 01:01:54,368 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 224 [2020-11-30 01:01:54,369 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 224 [2020-11-30 01:01:54,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 224 states and 327 transitions. [2020-11-30 01:01:54,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:01:54,376 INFO L691 BuchiCegarLoop]: Abstraction has 224 states and 327 transitions. [2020-11-30 01:01:54,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states and 327 transitions. [2020-11-30 01:01:54,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-11-30 01:01:54,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-11-30 01:01:54,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 327 transitions. [2020-11-30 01:01:54,451 INFO L714 BuchiCegarLoop]: Abstraction has 224 states and 327 transitions. [2020-11-30 01:01:54,452 INFO L594 BuchiCegarLoop]: Abstraction has 224 states and 327 transitions. [2020-11-30 01:01:54,452 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 01:01:54,452 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 224 states and 327 transitions. [2020-11-30 01:01:54,455 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2020-11-30 01:01:54,455 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:01:54,456 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:01:54,457 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:54,457 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:54,457 INFO L794 eck$LassoCheckResult]: Stem: 592#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);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(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4; 486#L-1 havoc main_#res;havoc main_#t~ret83, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 487#L910 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 528#L918 main_#t~ret83 := valid_product_#res;main_~tmp~11 := main_#t~ret83;havoc main_#t~ret83; 529#L1015 assume 0 != main_~tmp~11; 586#L991 ~switchedOnBeforeTS~0 := 0; 587#L842 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 494#L863-1 [2020-11-30 01:01:54,457 INFO L796 eck$LassoCheckResult]: Loop: 494#L863-1 assume !false; 495#L57 assume test_~splverifierCounter~0 < 4; 677#L58 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 599#L66 assume !(0 != test_~tmp~0); 531#L66-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 512#L76 assume !(0 != test_~tmp___0~0); 501#L76-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 502#L86 assume 0 != test_~tmp___2~0; 525#L92-2 havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 526#L286 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 488#L852 assume !(0 != ~pumpRunning~0); 489#L132 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 608#L216 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 676#L190-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 507#L164-3 assume !(0 == ~pumpRunning~0); 484#L139 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~10, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~10;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;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; 669#L441 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~10 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 532#L863 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~10); 494#L863-1 [2020-11-30 01:01:54,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:54,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2020-11-30 01:01:54,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:54,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24472421] [2020-11-30 01:01:54,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:54,540 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:54,601 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:54,633 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:01:54,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:54,634 INFO L82 PathProgramCache]: Analyzing trace with hash 245468075, now seen corresponding path program 1 times [2020-11-30 01:01:54,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:54,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947538322] [2020-11-30 01:01:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:54,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:54,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947538322] [2020-11-30 01:01:54,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:54,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:01:54,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109464401] [2020-11-30 01:01:54,659 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:01:54,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:54,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:01:54,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:01:54,660 INFO L87 Difference]: Start difference. First operand 224 states and 327 transitions. cyclomatic complexity: 105 Second operand 3 states. [2020-11-30 01:01:54,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:54,869 INFO L93 Difference]: Finished difference Result 228 states and 314 transitions. [2020-11-30 01:01:54,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:01:54,870 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 314 transitions. [2020-11-30 01:01:54,873 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 156 [2020-11-30 01:01:54,877 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 228 states and 314 transitions. [2020-11-30 01:01:54,878 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 228 [2020-11-30 01:01:54,879 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 228 [2020-11-30 01:01:54,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 228 states and 314 transitions. [2020-11-30 01:01:54,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:01:54,881 INFO L691 BuchiCegarLoop]: Abstraction has 228 states and 314 transitions. [2020-11-30 01:01:54,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states and 314 transitions. [2020-11-30 01:01:54,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-11-30 01:01:54,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-11-30 01:01:54,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 314 transitions. [2020-11-30 01:01:54,895 INFO L714 BuchiCegarLoop]: Abstraction has 228 states and 314 transitions. [2020-11-30 01:01:54,896 INFO L594 BuchiCegarLoop]: Abstraction has 228 states and 314 transitions. [2020-11-30 01:01:54,896 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 01:01:54,896 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 228 states and 314 transitions. [2020-11-30 01:01:54,898 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 156 [2020-11-30 01:01:54,898 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:01:54,898 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:01:54,900 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:54,900 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:54,900 INFO L794 eck$LassoCheckResult]: Stem: 1101#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);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(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4; 969#L-1 havoc main_#res;havoc main_#t~ret83, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 946#L910 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 947#L918 main_#t~ret83 := valid_product_#res;main_~tmp~11 := main_#t~ret83;havoc main_#t~ret83; 1005#L1015 assume 0 != main_~tmp~11; 1094#L991 ~switchedOnBeforeTS~0 := 0; 1095#L842 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 974#L863-1 [2020-11-30 01:01:54,906 INFO L796 eck$LassoCheckResult]: Loop: 974#L863-1 assume !false; 975#L57 assume test_~splverifierCounter~0 < 4; 1130#L58 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 1166#L66 assume !(0 != test_~tmp~0); 1158#L66-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 1155#L76 assume !(0 != test_~tmp___0~0); 1152#L76-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 1150#L86 assume 0 != test_~tmp___2~0; 1147#L92-2 havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 1093#L286 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 970#L852 assume !(0 != ~pumpRunning~0); 971#L132 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1019#L216 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 1020#L190-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 988#L164-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 989#L449-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1038#L454-3 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 1084#L335-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 1106#L335-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1102#L341-3 processEnvironment__wrappee__highWaterSensor_#t~ret11 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret11;havoc processEnvironment__wrappee__highWaterSensor_#t~ret11; 1049#L168-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 944#L139 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~10, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~10;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;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; 1013#L441 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~10 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 1008#L863 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~10); 974#L863-1 [2020-11-30 01:01:54,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:54,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2020-11-30 01:01:54,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:54,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135226897] [2020-11-30 01:01:54,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:55,021 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:55,104 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:55,120 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:01:55,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:55,122 INFO L82 PathProgramCache]: Analyzing trace with hash 804540375, now seen corresponding path program 1 times [2020-11-30 01:01:55,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:55,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099816111] [2020-11-30 01:01:55,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:01:55,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:01:55,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099816111] [2020-11-30 01:01:55,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:01:55,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:01:55,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195770011] [2020-11-30 01:01:55,176 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 01:01:55,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:01:55,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:01:55,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:01:55,177 INFO L87 Difference]: Start difference. First operand 228 states and 314 transitions. cyclomatic complexity: 88 Second operand 5 states. [2020-11-30 01:01:55,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:01:55,458 INFO L93 Difference]: Finished difference Result 667 states and 901 transitions. [2020-11-30 01:01:55,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:01:55,459 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 667 states and 901 transitions. [2020-11-30 01:01:55,469 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 421 [2020-11-30 01:01:55,477 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 667 states to 667 states and 901 transitions. [2020-11-30 01:01:55,477 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 667 [2020-11-30 01:01:55,480 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 667 [2020-11-30 01:01:55,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 667 states and 901 transitions. [2020-11-30 01:01:55,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:01:55,487 INFO L691 BuchiCegarLoop]: Abstraction has 667 states and 901 transitions. [2020-11-30 01:01:55,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states and 901 transitions. [2020-11-30 01:01:55,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 449. [2020-11-30 01:01:55,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-11-30 01:01:55,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 604 transitions. [2020-11-30 01:01:55,534 INFO L714 BuchiCegarLoop]: Abstraction has 449 states and 604 transitions. [2020-11-30 01:01:55,534 INFO L594 BuchiCegarLoop]: Abstraction has 449 states and 604 transitions. [2020-11-30 01:01:55,535 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 01:01:55,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 449 states and 604 transitions. [2020-11-30 01:01:55,539 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 312 [2020-11-30 01:01:55,539 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:01:55,540 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:01:55,544 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:55,544 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:01:55,544 INFO L794 eck$LassoCheckResult]: Stem: 2016#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);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(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4; 1880#L-1 havoc main_#res;havoc main_#t~ret83, main_~retValue_acc~13, main_~tmp~11;havoc main_~retValue_acc~13;havoc main_~tmp~11; 1857#L910 havoc valid_product_#res;havoc valid_product_~retValue_acc~12;havoc valid_product_~retValue_acc~12;valid_product_~retValue_acc~12 := 1;valid_product_#res := valid_product_~retValue_acc~12; 1858#L918 main_#t~ret83 := valid_product_#res;main_~tmp~11 := main_#t~ret83;havoc main_#t~ret83; 1916#L1015 assume 0 != main_~tmp~11; 2009#L991 ~switchedOnBeforeTS~0 := 0; 2010#L842 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1885#L863-1 [2020-11-30 01:01:55,545 INFO L796 eck$LassoCheckResult]: Loop: 1885#L863-1 assume !false; 1886#L57 assume test_~splverifierCounter~0 < 4; 2051#L58 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 2290#L66 assume !(0 != test_~tmp~0); 2289#L66-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 2288#L76 assume !(0 != test_~tmp___0~0); 2286#L76-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 2285#L86 assume 0 != test_~tmp___2~0; 2283#L92-2 havoc __utac_acc__Specification5_spec__2_#t~ret79;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 2282#L286 __utac_acc__Specification5_spec__2_#t~ret79 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret79;havoc __utac_acc__Specification5_spec__2_#t~ret79; 1881#L852 assume !(0 != ~pumpRunning~0); 1882#L132 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1931#L216 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 1932#L190-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 1899#L164-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 1900#L449-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1949#L454-3 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 1997#L335-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 2024#L335-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 2017#L341-3 processEnvironment__wrappee__highWaterSensor_#t~ret11 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret11;havoc processEnvironment__wrappee__highWaterSensor_#t~ret11; 1961#L168-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 1855#L139 havoc __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_#t~ret81, __utac_acc__Specification5_spec__3_~tmp~10, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~10;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;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; 1925#L441 __utac_acc__Specification5_spec__3_#t~ret80 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~10 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 1919#L863 assume 2 != __utac_acc__Specification5_spec__3_~tmp~10;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~1;havoc isPumpRunning_~retValue_acc~1;isPumpRunning_~retValue_acc~1 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~1; 1920#L286-1 __utac_acc__Specification5_spec__3_#t~ret81 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~3 := __utac_acc__Specification5_spec__3_#t~ret81;havoc __utac_acc__Specification5_spec__3_#t~ret81; 1998#L867 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3); 1885#L863-1 [2020-11-30 01:01:55,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:55,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2020-11-30 01:01:55,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:55,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629191307] [2020-11-30 01:01:55,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:55,616 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:55,662 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:55,676 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:01:55,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:55,676 INFO L82 PathProgramCache]: Analyzing trace with hash 69177842, now seen corresponding path program 1 times [2020-11-30 01:01:55,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:55,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584161932] [2020-11-30 01:01:55,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:55,689 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:55,696 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:55,708 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:01:55,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:01:55,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1897033800, now seen corresponding path program 1 times [2020-11-30 01:01:55,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:01:55,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957063638] [2020-11-30 01:01:55,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:01:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:55,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:01:55,818 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:01:55,845 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:01:56,089 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-11-30 01:01:56,224 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-11-30 01:03:31,197 WARN L193 SmtUtils]: Spent 1.58 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2020-11-30 01:04:39,872 WARN L193 SmtUtils]: Spent 1.14 m on a formula simplification that was a NOOP. DAG size: 435 [2020-11-30 01:04:40,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 01:04:40 BoogieIcfgContainer [2020-11-30 01:04:40,235 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 01:04:40,237 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:04:40,237 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:04:40,237 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:04:40,238 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:01:52" (3/4) ... [2020-11-30 01:04:40,243 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 01:04:40,333 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_698d8491-e4dd-4aee-827c-c83067fd010d/bin/uautomizer/witness.graphml [2020-11-30 01:04:40,333 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:04:40,335 INFO L168 Benchmark]: Toolchain (without parser) took 170079.65 ms. Allocated memory was 94.4 MB in the beginning and 142.6 MB in the end (delta: 48.2 MB). Free memory was 61.1 MB in the beginning and 54.4 MB in the end (delta: 6.7 MB). Peak memory consumption was 55.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:04:40,335 INFO L168 Benchmark]: CDTParser took 3.41 ms. Allocated memory is still 77.6 MB. Free memory was 50.6 MB in the beginning and 50.6 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:04:40,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.84 ms. Allocated memory is still 94.4 MB. Free memory was 60.8 MB in the beginning and 60.3 MB in the end (delta: 537.5 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:04:40,337 INFO L168 Benchmark]: Boogie Procedure Inliner took 130.87 ms. Allocated memory is still 94.4 MB. Free memory was 60.3 MB in the beginning and 55.0 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:04:40,337 INFO L168 Benchmark]: Boogie Preprocessor took 103.11 ms. Allocated memory is still 94.4 MB. Free memory was 55.0 MB in the beginning and 50.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:04:40,338 INFO L168 Benchmark]: RCFGBuilder took 1673.50 ms. Allocated memory is still 94.4 MB. Free memory was 50.9 MB in the beginning and 39.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:04:40,338 INFO L168 Benchmark]: BuchiAutomizer took 167385.13 ms. Allocated memory was 94.4 MB in the beginning and 142.6 MB in the end (delta: 48.2 MB). Free memory was 39.8 MB in the beginning and 57.5 MB in the end (delta: -17.8 MB). Peak memory consumption was 63.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:04:40,339 INFO L168 Benchmark]: Witness Printer took 96.47 ms. Allocated memory is still 142.6 MB. Free memory was 57.5 MB in the beginning and 54.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:04:40,342 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.41 ms. Allocated memory is still 77.6 MB. Free memory was 50.6 MB in the beginning and 50.6 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 681.84 ms. Allocated memory is still 94.4 MB. Free memory was 60.8 MB in the beginning and 60.3 MB in the end (delta: 537.5 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 130.87 ms. Allocated memory is still 94.4 MB. Free memory was 60.3 MB in the beginning and 55.0 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 103.11 ms. Allocated memory is still 94.4 MB. Free memory was 55.0 MB in the beginning and 50.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1673.50 ms. Allocated memory is still 94.4 MB. Free memory was 50.9 MB in the beginning and 39.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 167385.13 ms. Allocated memory was 94.4 MB in the beginning and 142.6 MB in the end (delta: 48.2 MB). Free memory was 39.8 MB in the beginning and 57.5 MB in the end (delta: -17.8 MB). Peak memory consumption was 63.2 MB. Max. memory is 16.1 GB. * Witness Printer took 96.47 ms. Allocated memory is still 142.6 MB. Free memory was 57.5 MB in the beginning and 54.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 449 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 167.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 166.0s. Construction of modules took 0.5s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 218 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 449 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 970 SDtfs, 2052 SDslu, 933 SDs, 0 SdLazy, 169 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time LassoAnalysisResults: nont1 unkn0 SFLI2 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: 56]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=19260} State at position 1 is {NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c30e595=57, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3ac20f5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f42b9f6=0, NULL=19260, NULL=19282, NULL=0, retValue_acc=1, NULL=19269, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5b0c78c5=0, retValue_acc=0, NULL=0, tmp___1=0, NULL=19280, NULL=19288, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@554032a6=0, NULL=19283, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18157926=0, cleanupTimeShifts=4, tmp=0, tmp=1, NULL=19286, NULL=0, NULL=0, waterLevel=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@75fd7acd=0, tmp___0=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=19265, NULL=0, \result=1, tmp=1, NULL=0, NULL=0, NULL=19264, NULL=0, NULL=0, NULL=0, NULL=0, tmp=1, retValue_acc=1, NULL=19273, NULL=19266, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@528f7dfa=0, tmp=0, head=0, NULL=19270, NULL=0, NULL=0, NULL=0, NULL=19276, NULL=19267, tmp=0, NULL=0, NULL=19275, NULL=0, NULL=19274, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@602b1cbe=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@b838569=0, NULL=19284, tmp___0=0, NULL=0, NULL=19279, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@68b52d9b=0, tmp=0, switchedOnBeforeTS=0, NULL=19278, NULL=19285, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, \result=0, NULL=19277, retValue_acc=0, \result=0, tmp___0=0, NULL=19262, NULL=0, NULL=19263, NULL=19271, NULL=0, NULL=19272, NULL=19287, tmp___2=57, splverifierCounter=0, NULL=0, NULL=19281, retValue_acc=0, NULL=19261, NULL=19268, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4c0a009c=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L120] int pumpRunning = 0; [L121] int systemActive = 1; [L366] int waterLevel = 1; [L367] int methaneLevelCritical = 0; [L638] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L836] int switchedOnBeforeTS ; [L932] int cleanupTimeShifts = 4; [L1006] int retValue_acc ; [L1007] int tmp ; [L914] int retValue_acc ; [L917] retValue_acc = 1 [L918] return (retValue_acc); [L1013] tmp = valid_product() [L1015] COND TRUE \read(tmp) [L841] switchedOnBeforeTS = 0 [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 Loop: [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L282] int retValue_acc ; [L285] retValue_acc = pumpRunning [L286] return (retValue_acc); [L850] switchedOnBeforeTS = isPumpRunning() [L132] COND FALSE !(\read(pumpRunning)) [L139] COND TRUE \read(systemActive) [L213] int tmp ; [L216] COND FALSE !(\read(pumpRunning)) [L187] int tmp ; [L190] COND FALSE !(\read(pumpRunning)) [L161] int tmp ; [L164] COND TRUE ! pumpRunning [L327] int retValue_acc ; [L328] int tmp ; [L329] int tmp___0 ; [L446] int retValue_acc ; [L449] COND TRUE waterLevel < 2 [L450] retValue_acc = 1 [L451] return (retValue_acc); [L333] tmp = isHighWaterSensorDry() [L335] COND TRUE \read(tmp) [L336] tmp___0 = 0 [L340] retValue_acc = tmp___0 [L341] return (retValue_acc); [L166] tmp = isHighWaterLevel() [L168] COND FALSE !(\read(tmp)) [L856] int tmp ; [L857] int tmp___0 ; [L437] int retValue_acc ; [L440] retValue_acc = waterLevel [L441] return (retValue_acc); [L861] tmp = getWaterLevel() [L863] COND TRUE tmp != 2 [L282] int retValue_acc ; [L285] retValue_acc = pumpRunning [L286] return (retValue_acc); [L865] tmp___0 = isPumpRunning() [L867] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...