./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product46.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec5_product46.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 4c100018e2a5139387b38d5f21033274a3db59f6 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.1-dev-20ed64e [2021-08-27 16:25:03,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:25:03,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:25:03,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:25:03,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:25:03,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:25:03,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:25:03,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:25:03,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:25:03,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:25:03,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:25:03,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:25:03,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:25:03,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:25:03,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:25:03,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:25:03,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:25:03,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:25:03,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:25:03,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:25:03,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:25:03,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:25:03,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:25:03,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:25:03,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:25:03,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:25:03,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:25:03,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:25:03,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:25:03,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:25:03,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:25:03,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:25:03,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:25:03,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:25:03,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:25:03,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:25:03,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:25:03,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:25:03,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:25:03,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:25:03,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:25:03,902 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:25:03,925 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:25:03,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:25:03,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:25:03,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:25:03,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:25:03,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:25:03,928 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:25:03,928 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:25:03,928 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:25:03,928 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:25:03,929 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:25:03,929 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:25:03,929 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:25:03,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:25:03,937 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:25:03,937 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:25:03,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:25:03,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:25:03,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:25:03,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:25:03,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:25:03,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:25:03,938 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:25:03,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:25:03,938 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:25:03,938 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:25:03,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:25:03,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:25:03,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:25:03,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:25:03,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:25:03,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:25:03,939 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:25:03,939 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c100018e2a5139387b38d5f21033274a3db59f6 [2021-08-27 16:25:04,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:25:04,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:25:04,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:25:04,208 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:25:04,208 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:25:04,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product46.cil.c [2021-08-27 16:25:04,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27cfd7fea/2f494829f0f842d7ae642771bc30c5e9/FLAGa86e0d0b3 [2021-08-27 16:25:04,697 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:25:04,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product46.cil.c [2021-08-27 16:25:04,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27cfd7fea/2f494829f0f842d7ae642771bc30c5e9/FLAGa86e0d0b3 [2021-08-27 16:25:04,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27cfd7fea/2f494829f0f842d7ae642771bc30c5e9 [2021-08-27 16:25:04,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:25:04,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:25:04,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:25:04,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:25:04,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:25:04,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:25:04" (1/1) ... [2021-08-27 16:25:04,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d33286d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:04, skipping insertion in model container [2021-08-27 16:25:04,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:25:04" (1/1) ... [2021-08-27 16:25:04,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:25:04,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:25:05,014 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product46.cil.c[14887,14900] [2021-08-27 16:25:05,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:25:05,044 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:25:05,084 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product46.cil.c[14887,14900] [2021-08-27 16:25:05,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:25:05,110 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:25:05,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:05 WrapperNode [2021-08-27 16:25:05,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:25:05,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:25:05,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:25:05,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:25:05,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:05" (1/1) ... [2021-08-27 16:25:05,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:05" (1/1) ... [2021-08-27 16:25:05,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:25:05,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:25:05,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:25:05,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:25:05,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:05" (1/1) ... [2021-08-27 16:25:05,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:05" (1/1) ... [2021-08-27 16:25:05,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:05" (1/1) ... [2021-08-27 16:25:05,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:05" (1/1) ... [2021-08-27 16:25:05,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:05" (1/1) ... [2021-08-27 16:25:05,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:05" (1/1) ... [2021-08-27 16:25:05,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:05" (1/1) ... [2021-08-27 16:25:05,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:25:05,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:25:05,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:25:05,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:25:05,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:05" (1/1) ... [2021-08-27 16:25:05,218 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:25:05,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:25:05,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 16:25:05,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 16:25:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:25:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:25:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:25:05,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:25:05,871 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:25:05,871 INFO L299 CfgBuilder]: Removed 208 assume(true) statements. [2021-08-27 16:25:05,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:25:05 BoogieIcfgContainer [2021-08-27 16:25:05,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:25:05,873 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:25:05,873 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:25:05,875 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:25:05,875 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:25:05,876 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:25:04" (1/3) ... [2021-08-27 16:25:05,876 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6bab3f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:25:05, skipping insertion in model container [2021-08-27 16:25:05,876 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:25:05,877 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:05" (2/3) ... [2021-08-27 16:25:05,877 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6bab3f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:25:05, skipping insertion in model container [2021-08-27 16:25:05,877 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:25:05,877 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:25:05" (3/3) ... [2021-08-27 16:25:05,877 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product46.cil.c [2021-08-27 16:25:05,909 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:25:05,910 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:25:05,910 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:25:05,910 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:25:05,910 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:25:05,910 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:25:05,910 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:25:05,910 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:25:05,920 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 135 states, 134 states have (on average 1.5) internal successors, (201), 134 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:25:05,934 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-08-27 16:25:05,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:05,934 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:05,939 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:05,939 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:05,939 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:25:05,940 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 135 states, 134 states have (on average 1.5) internal successors, (201), 134 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:25:05,944 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-08-27 16:25:05,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:05,944 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:05,944 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:05,944 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:05,947 INFO L791 eck$LassoCheckResult]: Stem: 119#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~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 33#L-1true havoc main_#res;havoc main_#t~ret10, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 80#L685true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 122#L693true main_#t~ret10 := valid_product_#res;main_~tmp~1 := main_#t~ret10;havoc main_#t~ret10; 92#L185true assume 0 != main_~tmp~1; 7#L157true ~switchedOnBeforeTS~0 := 0; 97#L51true havoc test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 61#L72-1true [2021-08-27 16:25:05,948 INFO L793 eck$LassoCheckResult]: Loop: 61#L72-1true assume !false; 13#L927true assume test_~splverifierCounter~0 < 4; 55#L928true test_~tmp~9 := test_#t~nondet78;havoc test_#t~nondet78; 30#L936true assume !(0 != test_~tmp~9); 17#L936-1true test_~tmp___0~2 := test_#t~nondet79;havoc test_#t~nondet79; 125#L946true assume !(0 != test_~tmp___0~2); 78#L946-1true test_~tmp___2~0 := test_#t~nondet80;havoc test_#t~nondet80; 54#L956true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 51#L964-2true havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 38#L848true __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 64#L61true assume !(0 != ~pumpRunning~0); 26#L720true assume !(0 != ~systemActive~0); 18#L727true havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 100#L644true __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 56#L72true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 61#L72-1true [2021-08-27 16:25:05,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:05,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:25:05,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:05,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74623857] [2021-08-27 16:25:05,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:05,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:06,092 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:06,176 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:06,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:06,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1013654413, now seen corresponding path program 1 times [2021-08-27 16:25:06,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:06,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177507842] [2021-08-27 16:25:06,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:06,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:25:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:25:06,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:25:06,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177507842] [2021-08-27 16:25:06,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177507842] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:25:06,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:25:06,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:25:06,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002531887] [2021-08-27 16:25:06,228 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:25:06,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:25:06,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:25:06,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:25:06,241 INFO L87 Difference]: Start difference. First operand has 135 states, 134 states have (on average 1.5) internal successors, (201), 134 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:25:06,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:25:06,272 INFO L93 Difference]: Finished difference Result 135 states and 191 transitions. [2021-08-27 16:25:06,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:25:06,274 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 191 transitions. [2021-08-27 16:25:06,280 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-08-27 16:25:06,283 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 128 states and 183 transitions. [2021-08-27 16:25:06,283 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 128 [2021-08-27 16:25:06,284 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 128 [2021-08-27 16:25:06,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 128 states and 183 transitions. [2021-08-27 16:25:06,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:25:06,285 INFO L681 BuchiCegarLoop]: Abstraction has 128 states and 183 transitions. [2021-08-27 16:25:06,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states and 183 transitions. [2021-08-27 16:25:06,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-08-27 16:25:06,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 128 states have (on average 1.4296875) internal successors, (183), 127 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:25:06,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 183 transitions. [2021-08-27 16:25:06,308 INFO L704 BuchiCegarLoop]: Abstraction has 128 states and 183 transitions. [2021-08-27 16:25:06,308 INFO L587 BuchiCegarLoop]: Abstraction has 128 states and 183 transitions. [2021-08-27 16:25:06,308 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:25:06,308 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 128 states and 183 transitions. [2021-08-27 16:25:06,309 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-08-27 16:25:06,309 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:06,309 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:06,310 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:06,310 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:06,310 INFO L791 eck$LassoCheckResult]: Stem: 404#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~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 329#L-1 havoc main_#res;havoc main_#t~ret10, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 330#L685 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 386#L693 main_#t~ret10 := valid_product_#res;main_~tmp~1 := main_#t~ret10;havoc main_#t~ret10; 393#L185 assume 0 != main_~tmp~1; 285#L157 ~switchedOnBeforeTS~0 := 0; 286#L51 havoc test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 363#L72-1 [2021-08-27 16:25:06,310 INFO L793 eck$LassoCheckResult]: Loop: 363#L72-1 assume !false; 299#L927 assume test_~splverifierCounter~0 < 4; 300#L928 test_~tmp~9 := test_#t~nondet78;havoc test_#t~nondet78; 325#L936 assume !(0 != test_~tmp~9); 308#L936-1 test_~tmp___0~2 := test_#t~nondet79;havoc test_#t~nondet79; 309#L946 assume !(0 != test_~tmp___0~2); 356#L946-1 test_~tmp___2~0 := test_#t~nondet80;havoc test_#t~nondet80; 359#L956 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 357#L964-2 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 336#L848 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 337#L61 assume !(0 != ~pumpRunning~0); 303#L720 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret58, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 306#L778 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret57, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 307#L752-1 assume !(0 == ~pumpRunning~0); 296#L727 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 310#L644 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 361#L72 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 363#L72-1 [2021-08-27 16:25:06,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:06,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:25:06,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:06,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309219569] [2021-08-27 16:25:06,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:06,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:06,348 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:06,421 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:06,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:06,421 INFO L82 PathProgramCache]: Analyzing trace with hash 378995151, now seen corresponding path program 1 times [2021-08-27 16:25:06,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:06,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173682930] [2021-08-27 16:25:06,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:06,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:25:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:25:06,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:25:06,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173682930] [2021-08-27 16:25:06,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173682930] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:25:06,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:25:06,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:25:06,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123386410] [2021-08-27 16:25:06,434 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:25:06,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:25:06,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:25:06,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:25:06,435 INFO L87 Difference]: Start difference. First operand 128 states and 183 transitions. cyclomatic complexity: 57 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:25:06,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:25:06,493 INFO L93 Difference]: Finished difference Result 177 states and 242 transitions. [2021-08-27 16:25:06,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:25:06,494 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 177 states and 242 transitions. [2021-08-27 16:25:06,495 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2021-08-27 16:25:06,496 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 177 states to 177 states and 242 transitions. [2021-08-27 16:25:06,496 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 177 [2021-08-27 16:25:06,497 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 177 [2021-08-27 16:25:06,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 177 states and 242 transitions. [2021-08-27 16:25:06,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:25:06,498 INFO L681 BuchiCegarLoop]: Abstraction has 177 states and 242 transitions. [2021-08-27 16:25:06,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states and 242 transitions. [2021-08-27 16:25:06,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-08-27 16:25:06,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 177 states have (on average 1.3672316384180792) internal successors, (242), 176 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:25:06,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 242 transitions. [2021-08-27 16:25:06,503 INFO L704 BuchiCegarLoop]: Abstraction has 177 states and 242 transitions. [2021-08-27 16:25:06,503 INFO L587 BuchiCegarLoop]: Abstraction has 177 states and 242 transitions. [2021-08-27 16:25:06,503 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:25:06,503 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 177 states and 242 transitions. [2021-08-27 16:25:06,504 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2021-08-27 16:25:06,504 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:06,504 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:06,505 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:06,505 INFO L843 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] [2021-08-27 16:25:06,505 INFO L791 eck$LassoCheckResult]: Stem: 719#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~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 643#L-1 havoc main_#res;havoc main_#t~ret10, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 644#L685 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 702#L693 main_#t~ret10 := valid_product_#res;main_~tmp~1 := main_#t~ret10;havoc main_#t~ret10; 709#L185 assume 0 != main_~tmp~1; 596#L157 ~switchedOnBeforeTS~0 := 0; 597#L51 havoc test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 678#L72-1 [2021-08-27 16:25:06,505 INFO L793 eck$LassoCheckResult]: Loop: 678#L72-1 assume !false; 612#L927 assume test_~splverifierCounter~0 < 4; 613#L928 test_~tmp~9 := test_#t~nondet78;havoc test_#t~nondet78; 639#L936 assume !(0 != test_~tmp~9); 619#L936-1 test_~tmp___0~2 := test_#t~nondet79;havoc test_#t~nondet79; 620#L946 assume !(0 != test_~tmp___0~2); 671#L946-1 test_~tmp___2~0 := test_#t~nondet80;havoc test_#t~nondet80; 674#L956 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 672#L964-2 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 651#L848 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 652#L61 assume !(0 != ~pumpRunning~0); 634#L720 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret58, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 617#L778 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret57, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 618#L752-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret77, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 615#L652-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 616#L657-1 isHighWaterLevel_#t~ret77 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret77;havoc isHighWaterLevel_#t~ret77; 630#L897-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 631#L897-5 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 717#L903-1 processEnvironment__wrappee__methaneQuery_#t~ret57 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~5 := processEnvironment__wrappee__methaneQuery_#t~ret57;havoc processEnvironment__wrappee__methaneQuery_#t~ret57; 663#L756-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5); 606#L727 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 621#L644 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 676#L72 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 678#L72-1 [2021-08-27 16:25:06,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:06,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:25:06,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:06,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237888374] [2021-08-27 16:25:06,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:06,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:06,526 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:06,561 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:06,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:06,561 INFO L82 PathProgramCache]: Analyzing trace with hash 490241563, now seen corresponding path program 1 times [2021-08-27 16:25:06,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:06,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019985754] [2021-08-27 16:25:06,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:06,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:25:06,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:25:06,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:25:06,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019985754] [2021-08-27 16:25:06,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019985754] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:25:06,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:25:06,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:25:06,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298222444] [2021-08-27 16:25:06,586 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:25:06,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:25:06,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:25:06,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:25:06,586 INFO L87 Difference]: Start difference. First operand 177 states and 242 transitions. cyclomatic complexity: 67 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:25:06,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:25:06,703 INFO L93 Difference]: Finished difference Result 497 states and 667 transitions. [2021-08-27 16:25:06,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:25:06,704 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 497 states and 667 transitions. [2021-08-27 16:25:06,706 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 319 [2021-08-27 16:25:06,709 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 497 states to 497 states and 667 transitions. [2021-08-27 16:25:06,709 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 497 [2021-08-27 16:25:06,710 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 497 [2021-08-27 16:25:06,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 497 states and 667 transitions. [2021-08-27 16:25:06,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:25:06,712 INFO L681 BuchiCegarLoop]: Abstraction has 497 states and 667 transitions. [2021-08-27 16:25:06,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states and 667 transitions. [2021-08-27 16:25:06,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 347. [2021-08-27 16:25:06,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 347 states have (on average 1.3342939481268012) internal successors, (463), 346 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:25:06,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 463 transitions. [2021-08-27 16:25:06,729 INFO L704 BuchiCegarLoop]: Abstraction has 347 states and 463 transitions. [2021-08-27 16:25:06,729 INFO L587 BuchiCegarLoop]: Abstraction has 347 states and 463 transitions. [2021-08-27 16:25:06,729 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:25:06,729 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 347 states and 463 transitions. [2021-08-27 16:25:06,731 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 244 [2021-08-27 16:25:06,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:06,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:06,732 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:06,732 INFO L843 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] [2021-08-27 16:25:06,732 INFO L791 eck$LassoCheckResult]: Stem: 1415#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~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(30);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(9);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(21);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1333#L-1 havoc main_#res;havoc main_#t~ret10, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 1334#L685 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 1395#L693 main_#t~ret10 := valid_product_#res;main_~tmp~1 := main_#t~ret10;havoc main_#t~ret10; 1403#L185 assume 0 != main_~tmp~1; 1288#L157 ~switchedOnBeforeTS~0 := 0; 1289#L51 havoc test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1372#L72-1 [2021-08-27 16:25:06,732 INFO L793 eck$LassoCheckResult]: Loop: 1372#L72-1 assume !false; 1303#L927 assume test_~splverifierCounter~0 < 4; 1304#L928 test_~tmp~9 := test_#t~nondet78;havoc test_#t~nondet78; 1331#L936 assume !(0 != test_~tmp~9); 1308#L936-1 test_~tmp___0~2 := test_#t~nondet79;havoc test_#t~nondet79; 1309#L946 assume !(0 != test_~tmp___0~2); 1360#L946-1 test_~tmp___2~0 := test_#t~nondet80;havoc test_#t~nondet80; 1364#L956 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1361#L964-2 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 1341#L848 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 1342#L61 assume !(0 != ~pumpRunning~0); 1324#L720 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret58, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 1306#L778 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret57, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 1307#L752-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret77, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 1301#L652-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1302#L657-1 isHighWaterLevel_#t~ret77 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret77;havoc isHighWaterLevel_#t~ret77; 1320#L897-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 1321#L897-5 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 1412#L903-1 processEnvironment__wrappee__methaneQuery_#t~ret57 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~5 := processEnvironment__wrappee__methaneQuery_#t~ret57;havoc processEnvironment__wrappee__methaneQuery_#t~ret57; 1350#L756-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5); 1295#L727 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 1310#L644 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 1368#L72 assume 2 != __utac_acc__Specification5_spec__3_~tmp~0;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~10;havoc isPumpRunning_~retValue_acc~10;isPumpRunning_~retValue_acc~10 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~10; 1369#L848-1 __utac_acc__Specification5_spec__3_#t~ret9 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret9;havoc __utac_acc__Specification5_spec__3_#t~ret9; 1370#L76 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 1372#L72-1 [2021-08-27 16:25:06,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:06,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:25:06,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:06,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721001878] [2021-08-27 16:25:06,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:06,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:06,757 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:06,815 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:06,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:06,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1324272170, now seen corresponding path program 1 times [2021-08-27 16:25:06,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:06,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403702753] [2021-08-27 16:25:06,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:06,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:06,819 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:06,824 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:06,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:06,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1387698352, now seen corresponding path program 1 times [2021-08-27 16:25:06,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:06,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329989560] [2021-08-27 16:25:06,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:06,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:06,841 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:06,866 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:47,829 WARN L207 SmtUtils]: Spent 40.64 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:26:28,759 WARN L207 SmtUtils]: Spent 20.18 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:26:28,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:26:28 BoogieIcfgContainer [2021-08-27 16:26:28,861 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:26:28,862 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:26:28,862 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:26:28,862 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:26:28,862 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:25:05" (3/4) ... [2021-08-27 16:26:28,864 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:26:28,889 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:26:28,889 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:26:28,890 INFO L168 Benchmark]: Toolchain (without parser) took 84166.23 ms. Allocated memory was 67.1 MB in the beginning and 130.0 MB in the end (delta: 62.9 MB). Free memory was 46.4 MB in the beginning and 92.7 MB in the end (delta: -46.4 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:28,890 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 67.1 MB. Free memory is still 48.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:26:28,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.57 ms. Allocated memory is still 67.1 MB. Free memory was 46.2 MB in the beginning and 42.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:28,890 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.57 ms. Allocated memory is still 67.1 MB. Free memory was 42.4 MB in the beginning and 38.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:28,891 INFO L168 Benchmark]: Boogie Preprocessor took 29.34 ms. Allocated memory is still 67.1 MB. Free memory was 38.5 MB in the beginning and 35.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:28,891 INFO L168 Benchmark]: RCFGBuilder took 665.69 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 35.6 MB in the beginning and 57.6 MB in the end (delta: -22.0 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:28,891 INFO L168 Benchmark]: BuchiAutomizer took 82988.05 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 57.2 MB in the beginning and 95.9 MB in the end (delta: -38.7 MB). Peak memory consumption was 77.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:28,892 INFO L168 Benchmark]: Witness Printer took 27.66 ms. Allocated memory is still 130.0 MB. Free memory was 95.9 MB in the beginning and 92.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:26:28,893 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 67.1 MB. Free memory is still 48.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 388.57 ms. Allocated memory is still 67.1 MB. Free memory was 46.2 MB in the beginning and 42.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.57 ms. Allocated memory is still 67.1 MB. Free memory was 42.4 MB in the beginning and 38.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.34 ms. Allocated memory is still 67.1 MB. Free memory was 38.5 MB in the beginning and 35.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 665.69 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 35.6 MB in the beginning and 57.6 MB in the end (delta: -22.0 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 82988.05 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 57.2 MB in the beginning and 95.9 MB in the end (delta: -38.7 MB). Peak memory consumption was 77.3 MB. Max. memory is 16.1 GB. * Witness Printer took 27.66 ms. Allocated memory is still 130.0 MB. Free memory was 95.9 MB in the beginning and 92.7 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 347 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 82.9s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 82.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 34.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 150 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 347 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 624 SDtfs, 927 SDslu, 651 SDs, 0 SdLazy, 122 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 111.2ms 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: 926]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=19292} State at position 1 is {NULL=0, NULL=0, NULL=21005, NULL=19292, NULL=0, NULL=0, NULL=21008, methaneLevelCritical=0, NULL=0, NULL=19293, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@32eb82fa=0, NULL=21012, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d5b584d=0, tmp___1=0, tmp=0, NULL=21014, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26eca2b7=0, NULL=21007, retValue_acc=0, cleanupTimeShifts=4, NULL=20994, waterLevel=1, NULL=0, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=21018, tmp=1, NULL=0, NULL=0, NULL=0, \result=1, NULL=0, retValue_acc=0, NULL=0, NULL=0, tmp=1, tmp___0=0, NULL=21003, retValue_acc=1, NULL=21019, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2348be87=0, head=0, tmp=0, NULL=20995, NULL=0, NULL=0, NULL=20993, NULL=21009, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@639897bb=0, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=21002, NULL=0, NULL=21017, tmp___0=0, NULL=21013, NULL=0, tmp=1, NULL=0, NULL=21016, switchedOnBeforeTS=0, NULL=21000, \result=0, NULL=20997, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23e0e740=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4bbf54f4=0, NULL=0, NULL=0, systemActive=1, \result=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@283e59e1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1391ae0f=68, \result=0, NULL=20996, NULL=0, NULL=0, NULL=21010, tmp___0=0, NULL=20998, \result=0, NULL=21006, NULL=0, retValue_acc=1, NULL=20999, tmp___2=68, splverifierCounter=0, NULL=0, NULL=21015, NULL=21011, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a803202=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5e39aaf3=0, NULL=21004, NULL=21001} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L45] int switchedOnBeforeTS ; [L94] int cleanupTimeShifts = 4; [L368] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L569] int waterLevel = 1; [L570] int methaneLevelCritical = 0; [L710] int pumpRunning = 0; [L711] int systemActive = 1; [L176] int retValue_acc ; [L177] int tmp ; [L689] int retValue_acc ; [L692] retValue_acc = 1 [L693] return (retValue_acc); [L183] tmp = valid_product() [L185] COND TRUE \read(tmp) [L50] switchedOnBeforeTS = 0 [L917] int splverifierCounter ; [L918] int tmp ; [L919] int tmp___0 ; [L920] int tmp___1 ; [L921] int tmp___2 ; [L924] splverifierCounter = 0 Loop: [L926] COND TRUE 1 [L928] COND TRUE splverifierCounter < 4 [L934] tmp = __VERIFIER_nondet_int() [L936] COND FALSE !(\read(tmp)) [L944] tmp___0 = __VERIFIER_nondet_int() [L946] COND FALSE !(\read(tmp___0)) [L954] tmp___2 = __VERIFIER_nondet_int() [L956] COND TRUE \read(tmp___2) [L911] systemActive = 1 [L844] int retValue_acc ; [L847] retValue_acc = pumpRunning [L848] return (retValue_acc); [L59] switchedOnBeforeTS = isPumpRunning() [L720] COND FALSE !(\read(pumpRunning)) [L727] COND TRUE \read(systemActive) [L775] int tmp ; [L778] COND FALSE !(\read(pumpRunning)) [L749] int tmp ; [L752] COND TRUE ! pumpRunning [L889] int retValue_acc ; [L890] int tmp ; [L891] int tmp___0 ; [L649] int retValue_acc ; [L652] COND TRUE waterLevel < 2 [L653] retValue_acc = 1 [L654] return (retValue_acc); [L895] tmp = isHighWaterSensorDry() [L897] COND TRUE \read(tmp) [L898] tmp___0 = 0 [L902] retValue_acc = tmp___0 [L903] return (retValue_acc); [L754] tmp = isHighWaterLevel() [L756] COND FALSE !(\read(tmp)) [L65] int tmp ; [L66] int tmp___0 ; [L640] int retValue_acc ; [L643] retValue_acc = waterLevel [L644] return (retValue_acc); [L70] tmp = getWaterLevel() [L72] COND TRUE tmp != 2 [L844] int retValue_acc ; [L847] retValue_acc = pumpRunning [L848] return (retValue_acc); [L74] tmp___0 = isPumpRunning() [L76] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:26:28,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...