./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product62.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_12e8bc66-9f33-47bb-81d2-56948aa89e59/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_12e8bc66-9f33-47bb-81d2-56948aa89e59/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_12e8bc66-9f33-47bb-81d2-56948aa89e59/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_12e8bc66-9f33-47bb-81d2-56948aa89e59/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_12e8bc66-9f33-47bb-81d2-56948aa89e59/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_12e8bc66-9f33-47bb-81d2-56948aa89e59/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 75c635909fda15f7353b7ed1307d9cf39bd79421 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:18:45,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:18:45,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:18:45,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:18:45,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:18:45,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:18:45,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:18:45,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:18:45,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:18:45,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:18:45,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:18:45,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:18:45,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:18:45,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:18:45,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:18:45,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:18:45,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:18:45,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:18:45,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:18:45,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:18:45,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:18:45,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:18:45,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:18:45,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:18:45,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:18:45,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:18:45,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:18:45,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:18:45,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:18:45,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:18:45,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:18:45,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:18:45,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:18:45,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:18:45,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:18:45,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:18:45,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:18:45,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:18:45,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:18:45,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:18:45,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:18:45,951 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_12e8bc66-9f33-47bb-81d2-56948aa89e59/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 21:18:45,994 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:18:45,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:18:45,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:18:45,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:18:45,997 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:18:45,998 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 21:18:45,998 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 21:18:45,998 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 21:18:45,998 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 21:18:45,999 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 21:18:46,000 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 21:18:46,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:18:46,001 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:18:46,001 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 21:18:46,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:18:46,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:18:46,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:18:46,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 21:18:46,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 21:18:46,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 21:18:46,003 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:18:46,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:18:46,003 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 21:18:46,004 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:18:46,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 21:18:46,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:18:46,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:18:46,005 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 21:18:46,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:18:46,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:18:46,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:18:46,006 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 21:18:46,008 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 21:18:46,008 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_12e8bc66-9f33-47bb-81d2-56948aa89e59/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_12e8bc66-9f33-47bb-81d2-56948aa89e59/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75c635909fda15f7353b7ed1307d9cf39bd79421 [2020-11-29 21:18:46,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:18:46,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:18:46,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:18:46,274 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:18:46,275 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:18:46,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_12e8bc66-9f33-47bb-81d2-56948aa89e59/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c [2020-11-29 21:18:46,335 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_12e8bc66-9f33-47bb-81d2-56948aa89e59/bin/uautomizer/data/47bae1827/a78ef6cf60f24cbf8e1cdece421d46f1/FLAG8affcf7ee [2020-11-29 21:18:46,969 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:18:46,970 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_12e8bc66-9f33-47bb-81d2-56948aa89e59/sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c [2020-11-29 21:18:46,983 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_12e8bc66-9f33-47bb-81d2-56948aa89e59/bin/uautomizer/data/47bae1827/a78ef6cf60f24cbf8e1cdece421d46f1/FLAG8affcf7ee [2020-11-29 21:18:47,225 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_12e8bc66-9f33-47bb-81d2-56948aa89e59/bin/uautomizer/data/47bae1827/a78ef6cf60f24cbf8e1cdece421d46f1 [2020-11-29 21:18:47,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:18:47,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:18:47,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:18:47,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:18:47,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:18:47,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:18:47" (1/1) ... [2020-11-29 21:18:47,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33764639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:18:47, skipping insertion in model container [2020-11-29 21:18:47,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:18:47" (1/1) ... [2020-11-29 21:18:47,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:18:47,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:18:47,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:18:47,624 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:18:47,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:18:47,742 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:18:47,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:18:47 WrapperNode [2020-11-29 21:18:47,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:18:47,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:18:47,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:18:47,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:18:47,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:18:47" (1/1) ... [2020-11-29 21:18:47,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:18:47" (1/1) ... [2020-11-29 21:18:47,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:18:47,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:18:47,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:18:47,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:18:47,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:18:47" (1/1) ... [2020-11-29 21:18:47,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:18:47" (1/1) ... [2020-11-29 21:18:47,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:18:47" (1/1) ... [2020-11-29 21:18:47,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:18:47" (1/1) ... [2020-11-29 21:18:47,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:18:47" (1/1) ... [2020-11-29 21:18:47,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:18:47" (1/1) ... [2020-11-29 21:18:47,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:18:47" (1/1) ... [2020-11-29 21:18:47,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:18:47,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:18:47,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:18:47,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:18:47,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:18:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12e8bc66-9f33-47bb-81d2-56948aa89e59/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:18:47,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:18:47,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:18:47,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:18:48,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:18:49,464 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:18:49,464 INFO L298 CfgBuilder]: Removed 370 assume(true) statements. [2020-11-29 21:18:49,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:18:49 BoogieIcfgContainer [2020-11-29 21:18:49,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:18:49,467 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 21:18:49,467 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 21:18:49,470 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 21:18:49,470 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:18:49,471 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 09:18:47" (1/3) ... [2020-11-29 21:18:49,472 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1fc52906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 09:18:49, skipping insertion in model container [2020-11-29 21:18:49,472 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:18:49,472 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:18:47" (2/3) ... [2020-11-29 21:18:49,478 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1fc52906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 09:18:49, skipping insertion in model container [2020-11-29 21:18:49,478 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:18:49,478 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:18:49" (3/3) ... [2020-11-29 21:18:49,480 INFO L373 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product62.cil.c [2020-11-29 21:18:49,531 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 21:18:49,532 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 21:18:49,532 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 21:18:49,532 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:18:49,535 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:18:49,535 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 21:18:49,535 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:18:49,536 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 21:18:49,553 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 234 states. [2020-11-29 21:18:49,584 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 153 [2020-11-29 21:18:49,584 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:18:49,584 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:18:49,592 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:18:49,592 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:18:49,592 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 21:18:49,592 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 234 states. [2020-11-29 21:18:49,603 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 153 [2020-11-29 21:18:49,603 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:18:49,603 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:18:49,605 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:18:49,605 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:18:49,610 INFO L794 eck$LassoCheckResult]: Stem: 95#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~string13.base, #t~string13.offset := #Ultimate.allocOnStack(13);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(110, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 3 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string19.base, #t~string19.offset, 1);call write~init~int(80, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(117, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(109, #t~string19.base, 3 + #t~string19.offset, 1);call write~init~int(112, #t~string19.base, 4 + #t~string19.offset, 1);call write~init~int(58, #t~string19.base, 5 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 6 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string25.base, #t~string25.offset, 1);call write~init~int(32, #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(2);call write~init~int(10, #t~string27.base, #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 1 + #t~string27.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 13#L-1true havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~11, main_~tmp~11;havoc main_~retValue_acc~11;havoc main_~tmp~11; 206#L1027true havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 93#L1035true main_#t~ret82 := valid_product_#res;main_~tmp~11 := main_#t~ret82;havoc main_#t~ret82; 225#L982true assume 0 != main_~tmp~11; 214#L955true ~switchedOnBeforeTS~0 := 0; 91#L314true havoc test_#t~nondet33, test_#t~nondet34, test_#t~nondet35, test_#t~nondet36, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 112#L335-1true [2020-11-29 21:18:49,610 INFO L796 eck$LassoCheckResult]: Loop: 112#L335-1true assume !false; 221#L371true assume test_~splverifierCounter~0 < 4; 70#L372true test_~tmp~7 := test_#t~nondet33;havoc test_#t~nondet33; 87#L380true assume !(0 != test_~tmp~7); 89#L380-1true test_~tmp___0~3 := test_#t~nondet34;havoc test_#t~nondet34; 135#L390true assume !(0 != test_~tmp___0~3); 137#L390-1true test_~tmp___2~0 := test_#t~nondet35;havoc test_#t~nondet35; 68#L400true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 192#L408-2true havoc __utac_acc__Specification5_spec__2_#t~ret30;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; 7#L219true __utac_acc__Specification5_spec__2_#t~ret30 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret30;havoc __utac_acc__Specification5_spec__2_#t~ret30; 108#L324true assume !(0 != ~pumpRunning~0); 23#L65true assume !(0 != ~systemActive~0); 194#L72true havoc __utac_acc__Specification5_spec__3_#t~ret31, __utac_acc__Specification5_spec__3_#t~ret32, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 47#L868true __utac_acc__Specification5_spec__3_#t~ret31 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret31;havoc __utac_acc__Specification5_spec__3_#t~ret31; 140#L335true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~6); 112#L335-1true [2020-11-29 21:18:49,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:18:49,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2020-11-29 21:18:49,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:18:49,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128926759] [2020-11-29 21:18:49,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:18:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:18:49,816 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:18:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:18:49,931 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:18:49,968 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:18:49,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:18:49,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1017841039, now seen corresponding path program 1 times [2020-11-29 21:18:49,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:18:49,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531561016] [2020-11-29 21:18:49,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:18:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:18:50,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:18:50,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531561016] [2020-11-29 21:18:50,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:18:50,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:18:50,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310052199] [2020-11-29 21:18:50,024 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 21:18:50,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:18:50,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:18:50,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:18:50,040 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-11-29 21:18:50,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:18:50,112 INFO L93 Difference]: Finished difference Result 231 states and 335 transitions. [2020-11-29 21:18:50,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:18:50,114 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 231 states and 335 transitions. [2020-11-29 21:18:50,121 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2020-11-29 21:18:50,136 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 231 states to 224 states and 327 transitions. [2020-11-29 21:18:50,138 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 224 [2020-11-29 21:18:50,140 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 224 [2020-11-29 21:18:50,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 224 states and 327 transitions. [2020-11-29 21:18:50,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 21:18:50,143 INFO L691 BuchiCegarLoop]: Abstraction has 224 states and 327 transitions. [2020-11-29 21:18:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states and 327 transitions. [2020-11-29 21:18:50,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-11-29 21:18:50,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-11-29 21:18:50,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 327 transitions. [2020-11-29 21:18:50,195 INFO L714 BuchiCegarLoop]: Abstraction has 224 states and 327 transitions. [2020-11-29 21:18:50,195 INFO L594 BuchiCegarLoop]: Abstraction has 224 states and 327 transitions. [2020-11-29 21:18:50,195 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 21:18:50,196 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 224 states and 327 transitions. [2020-11-29 21:18:50,203 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2020-11-29 21:18:50,203 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:18:50,203 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:18:50,205 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:18:50,205 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:18:50,205 INFO L794 eck$LassoCheckResult]: Stem: 609#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~string13.base, #t~string13.offset := #Ultimate.allocOnStack(13);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(110, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 3 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string19.base, #t~string19.offset, 1);call write~init~int(80, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(117, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(109, #t~string19.base, 3 + #t~string19.offset, 1);call write~init~int(112, #t~string19.base, 4 + #t~string19.offset, 1);call write~init~int(58, #t~string19.base, 5 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 6 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string25.base, #t~string25.offset, 1);call write~init~int(32, #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(2);call write~init~int(10, #t~string27.base, #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 1 + #t~string27.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 493#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~11, main_~tmp~11;havoc main_~retValue_acc~11;havoc main_~tmp~11; 494#L1027 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 607#L1035 main_#t~ret82 := valid_product_#res;main_~tmp~11 := main_#t~ret82;havoc main_#t~ret82; 608#L982 assume 0 != main_~tmp~11; 697#L955 ~switchedOnBeforeTS~0 := 0; 605#L314 havoc test_#t~nondet33, test_#t~nondet34, test_#t~nondet35, test_#t~nondet36, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 498#L335-1 [2020-11-29 21:18:50,206 INFO L796 eck$LassoCheckResult]: Loop: 498#L335-1 assume !false; 638#L371 assume test_~splverifierCounter~0 < 4; 581#L372 test_~tmp~7 := test_#t~nondet33;havoc test_#t~nondet33; 582#L380 assume !(0 != test_~tmp~7); 601#L380-1 test_~tmp___0~3 := test_#t~nondet34;havoc test_#t~nondet34; 603#L390 assume !(0 != test_~tmp___0~3); 667#L390-1 test_~tmp___2~0 := test_#t~nondet35;havoc test_#t~nondet35; 576#L400 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 578#L408-2 havoc __utac_acc__Specification5_spec__2_#t~ret30;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; 482#L219 __utac_acc__Specification5_spec__2_#t~ret30 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret30;havoc __utac_acc__Specification5_spec__2_#t~ret30; 483#L324 assume !(0 != ~pumpRunning~0); 510#L65 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 511#L149 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret8, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 598#L123-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 564#L97-3 assume !(0 == ~pumpRunning~0); 534#L72 havoc __utac_acc__Specification5_spec__3_#t~ret31, __utac_acc__Specification5_spec__3_#t~ret32, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 547#L868 __utac_acc__Specification5_spec__3_#t~ret31 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret31;havoc __utac_acc__Specification5_spec__3_#t~ret31; 548#L335 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~6); 498#L335-1 [2020-11-29 21:18:50,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:18:50,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2020-11-29 21:18:50,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:18:50,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908158820] [2020-11-29 21:18:50,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:18:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:18:50,330 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:18:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:18:50,426 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:18:50,460 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:18:50,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:18:50,461 INFO L82 PathProgramCache]: Analyzing trace with hash 901397579, now seen corresponding path program 1 times [2020-11-29 21:18:50,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:18:50,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410549712] [2020-11-29 21:18:50,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:18:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:18:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:18:50,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410549712] [2020-11-29 21:18:50,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:18:50,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:18:50,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659460691] [2020-11-29 21:18:50,485 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 21:18:50,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:18:50,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:18:50,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:18:50,486 INFO L87 Difference]: Start difference. First operand 224 states and 327 transitions. cyclomatic complexity: 105 Second operand 3 states. [2020-11-29 21:18:50,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:18:50,647 INFO L93 Difference]: Finished difference Result 228 states and 314 transitions. [2020-11-29 21:18:50,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:18:50,648 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 314 transitions. [2020-11-29 21:18:50,651 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 156 [2020-11-29 21:18:50,654 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 228 states and 314 transitions. [2020-11-29 21:18:50,654 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 228 [2020-11-29 21:18:50,654 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 228 [2020-11-29 21:18:50,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 228 states and 314 transitions. [2020-11-29 21:18:50,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 21:18:50,656 INFO L691 BuchiCegarLoop]: Abstraction has 228 states and 314 transitions. [2020-11-29 21:18:50,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states and 314 transitions. [2020-11-29 21:18:50,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-11-29 21:18:50,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-11-29 21:18:50,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 314 transitions. [2020-11-29 21:18:50,667 INFO L714 BuchiCegarLoop]: Abstraction has 228 states and 314 transitions. [2020-11-29 21:18:50,667 INFO L594 BuchiCegarLoop]: Abstraction has 228 states and 314 transitions. [2020-11-29 21:18:50,667 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 21:18:50,667 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 228 states and 314 transitions. [2020-11-29 21:18:50,669 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 156 [2020-11-29 21:18:50,669 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:18:50,669 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:18:50,670 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:18:50,670 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] [2020-11-29 21:18:50,670 INFO L794 eck$LassoCheckResult]: Stem: 1091#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~string13.base, #t~string13.offset := #Ultimate.allocOnStack(13);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(110, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 3 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string19.base, #t~string19.offset, 1);call write~init~int(80, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(117, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(109, #t~string19.base, 3 + #t~string19.offset, 1);call write~init~int(112, #t~string19.base, 4 + #t~string19.offset, 1);call write~init~int(58, #t~string19.base, 5 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 6 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string25.base, #t~string25.offset, 1);call write~init~int(32, #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(2);call write~init~int(10, #t~string27.base, #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 1 + #t~string27.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 949#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~11, main_~tmp~11;havoc main_~retValue_acc~11;havoc main_~tmp~11; 950#L1027 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 1083#L1035 main_#t~ret82 := valid_product_#res;main_~tmp~11 := main_#t~ret82;havoc main_#t~ret82; 1090#L982 assume 0 != main_~tmp~11; 1092#L955 ~switchedOnBeforeTS~0 := 0; 1086#L314 havoc test_#t~nondet33, test_#t~nondet34, test_#t~nondet35, test_#t~nondet36, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 954#L335-1 [2020-11-29 21:18:50,670 INFO L796 eck$LassoCheckResult]: Loop: 954#L335-1 assume !false; 1104#L371 assume test_~splverifierCounter~0 < 4; 1075#L372 test_~tmp~7 := test_#t~nondet33;havoc test_#t~nondet33; 1076#L380 assume !(0 != test_~tmp~7); 946#L380-1 test_~tmp___0~3 := test_#t~nondet34;havoc test_#t~nondet34; 1085#L390 assume !(0 != test_~tmp___0~3); 1089#L390-1 test_~tmp___2~0 := test_#t~nondet35;havoc test_#t~nondet35; 1059#L400 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1061#L408-2 havoc __utac_acc__Specification5_spec__2_#t~ret30;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; 936#L219 __utac_acc__Specification5_spec__2_#t~ret30 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret30;havoc __utac_acc__Specification5_spec__2_#t~ret30; 937#L324 assume !(0 != ~pumpRunning~0); 966#L65 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 967#L149 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret8, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 1084#L123-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1044#L97-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret28, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 1045#L876-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 1046#L881-3 isHighWaterLevel_#t~ret28 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret28;havoc isHighWaterLevel_#t~ret28; 1008#L268-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~0 := 0; 1006#L268-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 932#L274-3 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 933#L101-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 988#L72 havoc __utac_acc__Specification5_spec__3_#t~ret31, __utac_acc__Specification5_spec__3_#t~ret32, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 1013#L868 __utac_acc__Specification5_spec__3_#t~ret31 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret31;havoc __utac_acc__Specification5_spec__3_#t~ret31; 1014#L335 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~6); 954#L335-1 [2020-11-29 21:18:50,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:18:50,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2020-11-29 21:18:50,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:18:50,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144110605] [2020-11-29 21:18:50,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:18:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:18:50,734 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:18:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:18:50,784 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:18:50,797 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:18:50,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:18:50,800 INFO L82 PathProgramCache]: Analyzing trace with hash -9342761, now seen corresponding path program 1 times [2020-11-29 21:18:50,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:18:50,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148455836] [2020-11-29 21:18:50,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:18:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:18:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:18:50,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148455836] [2020-11-29 21:18:50,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:18:50,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:18:50,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976243378] [2020-11-29 21:18:50,871 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 21:18:50,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:18:50,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:18:50,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:18:50,872 INFO L87 Difference]: Start difference. First operand 228 states and 314 transitions. cyclomatic complexity: 88 Second operand 5 states. [2020-11-29 21:18:51,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:18:51,297 INFO L93 Difference]: Finished difference Result 1078 states and 1497 transitions. [2020-11-29 21:18:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:18:51,298 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1078 states and 1497 transitions. [2020-11-29 21:18:51,308 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 733 [2020-11-29 21:18:51,319 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1078 states to 1078 states and 1497 transitions. [2020-11-29 21:18:51,319 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1078 [2020-11-29 21:18:51,320 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1078 [2020-11-29 21:18:51,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1078 states and 1497 transitions. [2020-11-29 21:18:51,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 21:18:51,325 INFO L691 BuchiCegarLoop]: Abstraction has 1078 states and 1497 transitions. [2020-11-29 21:18:51,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states and 1497 transitions. [2020-11-29 21:18:51,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 446. [2020-11-29 21:18:51,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-11-29 21:18:51,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 609 transitions. [2020-11-29 21:18:51,357 INFO L714 BuchiCegarLoop]: Abstraction has 446 states and 609 transitions. [2020-11-29 21:18:51,357 INFO L594 BuchiCegarLoop]: Abstraction has 446 states and 609 transitions. [2020-11-29 21:18:51,357 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 21:18:51,357 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 446 states and 609 transitions. [2020-11-29 21:18:51,360 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 310 [2020-11-29 21:18:51,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:18:51,360 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:18:51,361 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:18:51,362 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] [2020-11-29 21:18:51,362 INFO L794 eck$LassoCheckResult]: Stem: 2430#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~string13.base, #t~string13.offset := #Ultimate.allocOnStack(13);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(110, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(102, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 3 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string19.base, #t~string19.offset, 1);call write~init~int(80, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(117, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(109, #t~string19.base, 3 + #t~string19.offset, 1);call write~init~int(112, #t~string19.base, 4 + #t~string19.offset, 1);call write~init~int(58, #t~string19.base, 5 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 6 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(110, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 2 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(102, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 3 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string25.base, #t~string25.offset, 1);call write~init~int(32, #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(2);call write~init~int(10, #t~string27.base, #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 1 + #t~string27.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 2276#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~11, main_~tmp~11;havoc main_~retValue_acc~11;havoc main_~tmp~11; 2277#L1027 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 2418#L1035 main_#t~ret82 := valid_product_#res;main_~tmp~11 := main_#t~ret82;havoc main_#t~ret82; 2429#L982 assume 0 != main_~tmp~11; 2431#L955 ~switchedOnBeforeTS~0 := 0; 2423#L314 havoc test_#t~nondet33, test_#t~nondet34, test_#t~nondet35, test_#t~nondet36, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2424#L335-1 [2020-11-29 21:18:51,362 INFO L796 eck$LassoCheckResult]: Loop: 2424#L335-1 assume !false; 2599#L371 assume test_~splverifierCounter~0 < 4; 2600#L372 test_~tmp~7 := test_#t~nondet33;havoc test_#t~nondet33; 2683#L380 assume !(0 != test_~tmp~7); 2680#L380-1 test_~tmp___0~3 := test_#t~nondet34;havoc test_#t~nondet34; 2679#L390 assume !(0 != test_~tmp___0~3); 2677#L390-1 test_~tmp___2~0 := test_#t~nondet35;havoc test_#t~nondet35; 2676#L400 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2674#L408-2 havoc __utac_acc__Specification5_spec__2_#t~ret30;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; 2673#L219 __utac_acc__Specification5_spec__2_#t~ret30 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret30;havoc __utac_acc__Specification5_spec__2_#t~ret30; 2672#L324 assume !(0 != ~pumpRunning~0); 2648#L65 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret9, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 2419#L149 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret8, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 2420#L123-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 2373#L97-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret28, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 2374#L876-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 2376#L881-3 isHighWaterLevel_#t~ret28 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret28;havoc isHighWaterLevel_#t~ret28; 2337#L268-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~0 := 0; 2335#L268-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 2257#L274-3 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 2258#L101-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 2313#L72 havoc __utac_acc__Specification5_spec__3_#t~ret31, __utac_acc__Specification5_spec__3_#t~ret32, __utac_acc__Specification5_spec__3_~tmp~6, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~6;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 2402#L868 __utac_acc__Specification5_spec__3_#t~ret31 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~6 := __utac_acc__Specification5_spec__3_#t~ret31;havoc __utac_acc__Specification5_spec__3_#t~ret31; 2510#L335 assume 2 != __utac_acc__Specification5_spec__3_~tmp~6;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; 2511#L219-1 __utac_acc__Specification5_spec__3_#t~ret32 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~2 := __utac_acc__Specification5_spec__3_#t~ret32;havoc __utac_acc__Specification5_spec__3_#t~ret32; 2602#L339 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~2); 2424#L335-1 [2020-11-29 21:18:51,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:18:51,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2020-11-29 21:18:51,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:18:51,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805798412] [2020-11-29 21:18:51,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:18:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:18:51,416 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:18:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:18:51,470 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:18:51,482 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:18:51,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:18:51,483 INFO L82 PathProgramCache]: Analyzing trace with hash -388467950, now seen corresponding path program 1 times [2020-11-29 21:18:51,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:18:51,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863265424] [2020-11-29 21:18:51,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:18:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:18:51,493 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:18:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:18:51,499 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:18:51,504 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:18:51,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:18:51,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1940287704, now seen corresponding path program 1 times [2020-11-29 21:18:51,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:18:51,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907875718] [2020-11-29 21:18:51,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:18:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:18:51,554 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:18:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:18:51,607 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:18:51,628 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:18:51,796 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-11-29 21:19:59,993 WARN L193 SmtUtils]: Spent 1.13 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2020-11-29 21:20:49,606 WARN L193 SmtUtils]: Spent 49.59 s on a formula simplification that was a NOOP. DAG size: 435 [2020-11-29 21:20:49,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 09:20:49 BoogieIcfgContainer [2020-11-29 21:20:49,800 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 21:20:49,800 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:20:49,800 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:20:49,801 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:20:49,801 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:18:49" (3/4) ... [2020-11-29 21:20:49,803 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 21:20:49,860 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_12e8bc66-9f33-47bb-81d2-56948aa89e59/bin/uautomizer/witness.graphml [2020-11-29 21:20:49,860 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:20:49,862 INFO L168 Benchmark]: Toolchain (without parser) took 122632.85 ms. Allocated memory was 83.9 MB in the beginning and 140.5 MB in the end (delta: 56.6 MB). Free memory was 52.1 MB in the beginning and 64.5 MB in the end (delta: -12.4 MB). Peak memory consumption was 42.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:20:49,862 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 83.9 MB. Free memory was 45.5 MB in the beginning and 45.4 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:20:49,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 516.28 ms. Allocated memory is still 83.9 MB. Free memory was 51.9 MB in the beginning and 50.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:20:49,863 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.44 ms. Allocated memory is still 83.9 MB. Free memory was 49.8 MB in the beginning and 44.5 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 21:20:49,864 INFO L168 Benchmark]: Boogie Preprocessor took 65.50 ms. Allocated memory is still 83.9 MB. Free memory was 44.5 MB in the beginning and 40.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 21:20:49,864 INFO L168 Benchmark]: RCFGBuilder took 1552.69 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 40.2 MB in the beginning and 45.0 MB in the end (delta: -4.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. [2020-11-29 21:20:49,865 INFO L168 Benchmark]: BuchiAutomizer took 120333.06 ms. Allocated memory was 109.1 MB in the beginning and 140.5 MB in the end (delta: 31.5 MB). Free memory was 45.0 MB in the beginning and 67.6 MB in the end (delta: -22.6 MB). Peak memory consumption was 53.8 MB. Max. memory is 16.1 GB. [2020-11-29 21:20:49,866 INFO L168 Benchmark]: Witness Printer took 60.25 ms. Allocated memory is still 140.5 MB. Free memory was 67.6 MB in the beginning and 64.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:20:49,868 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 83.9 MB. Free memory was 45.5 MB in the beginning and 45.4 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 516.28 ms. Allocated memory is still 83.9 MB. Free memory was 51.9 MB in the beginning and 50.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.44 ms. Allocated memory is still 83.9 MB. Free memory was 49.8 MB in the beginning and 44.5 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.50 ms. Allocated memory is still 83.9 MB. Free memory was 44.5 MB in the beginning and 40.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1552.69 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 40.2 MB in the beginning and 45.0 MB in the end (delta: -4.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 120333.06 ms. Allocated memory was 109.1 MB in the beginning and 140.5 MB in the end (delta: 31.5 MB). Free memory was 45.0 MB in the beginning and 67.6 MB in the end (delta: -22.6 MB). Peak memory consumption was 53.8 MB. Max. memory is 16.1 GB. * Witness Printer took 60.25 ms. Allocated memory is still 140.5 MB. Free memory was 67.6 MB in the beginning and 64.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 446 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 120.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 119.2s. Construction of modules took 0.4s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 632 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 446 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1038 SDtfs, 1774 SDslu, 1359 SDs, 0 SdLazy, 232 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 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: 370]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=0, NULL=20958, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@76b49914=0, NULL=0, NULL=20977, NULL=0, NULL=20966, retValue_acc=1, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44bbb25e=0, NULL=0, retValue_acc=0, tmp=0, NULL=20962, NULL=0, tmp___1=0, NULL=20955, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b5efcf6=0, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@626d4eb3=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@65281cca=76, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23f1e936=0, NULL=20953, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6d93ab2e=0, NULL=0, NULL=0, waterLevel=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4e166790=0, NULL=20969, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@185bbcc5=0, NULL=20970, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=20960, \result=1, NULL=0, tmp=1, NULL=0, NULL=20975, retValue_acc=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4022cbb1=0, tmp___0=0, NULL=0, NULL=20971, NULL=20967, tmp=0, head=0, tmp=0, NULL=20957, NULL=20956, NULL=20954, NULL=20972, tmp=1, tmp___0=0, NULL=0, NULL=0, NULL=0, NULL=0, tmp=0, switchedOnBeforeTS=0, NULL=20968, \result=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=20973, \result=1, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, retValue_acc=0, NULL=20951, tmp___0=0, \result=0, NULL=20949, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@512ca893=0, NULL=0, NULL=20964, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6b462fa8=0, NULL=0, NULL=0, NULL=20963, NULL=20976, NULL=20952, tmp___2=76, splverifierCounter=0, NULL=0, NULL=0, NULL=20974, NULL=20959, retValue_acc=0, NULL=20950, NULL=0, NULL=20965} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L53] int pumpRunning = 0; [L54] int systemActive = 1; [L308] int switchedOnBeforeTS ; [L596] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L793] int waterLevel = 1; [L794] int methaneLevelCritical = 0; [L896] int cleanupTimeShifts = 4; [L973] int retValue_acc ; [L974] int tmp ; [L1031] int retValue_acc ; [L1034] retValue_acc = 1 [L1035] return (retValue_acc); [L980] tmp = valid_product() [L982] COND TRUE \read(tmp) [L313] switchedOnBeforeTS = 0 [L361] int splverifierCounter ; [L362] int tmp ; [L363] int tmp___0 ; [L364] int tmp___1 ; [L365] int tmp___2 ; [L368] splverifierCounter = 0 Loop: [L370] COND TRUE 1 [L372] COND TRUE splverifierCounter < 4 [L378] tmp = __VERIFIER_nondet_int() [L380] COND FALSE !(\read(tmp)) [L388] tmp___0 = __VERIFIER_nondet_int() [L390] COND FALSE !(\read(tmp___0)) [L398] tmp___2 = __VERIFIER_nondet_int() [L400] COND TRUE \read(tmp___2) [L301] systemActive = 1 [L215] int retValue_acc ; [L218] retValue_acc = pumpRunning [L219] return (retValue_acc); [L322] switchedOnBeforeTS = isPumpRunning() [L65] COND FALSE !(\read(pumpRunning)) [L72] COND TRUE \read(systemActive) [L146] int tmp ; [L149] COND FALSE !(\read(pumpRunning)) [L120] int tmp ; [L123] COND FALSE !(\read(pumpRunning)) [L94] int tmp ; [L97] COND TRUE ! pumpRunning [L260] int retValue_acc ; [L261] int tmp ; [L262] int tmp___0 ; [L873] int retValue_acc ; [L876] COND TRUE waterLevel < 2 [L877] retValue_acc = 1 [L878] return (retValue_acc); [L266] tmp = isHighWaterSensorDry() [L268] COND TRUE \read(tmp) [L269] tmp___0 = 0 [L273] retValue_acc = tmp___0 [L274] return (retValue_acc); [L99] tmp = isHighWaterLevel() [L101] COND FALSE !(\read(tmp)) [L328] int tmp ; [L329] int tmp___0 ; [L864] int retValue_acc ; [L867] retValue_acc = waterLevel [L868] return (retValue_acc); [L333] tmp = getWaterLevel() [L335] COND TRUE tmp != 2 [L215] int retValue_acc ; [L218] retValue_acc = pumpRunning [L219] return (retValue_acc); [L337] tmp___0 = isPumpRunning() [L339] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...