./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product53.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_product53.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 8e882693bcbcb1a63ff9494a2e39acf2974fbfcd 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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 16:25:59,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:25:59,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:25:59,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:25:59,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:25:59,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:25:59,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:25:59,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:25:59,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:25:59,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:25:59,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:25:59,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:25:59,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:25:59,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:25:59,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:25:59,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:25:59,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:25:59,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:25:59,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:25:59,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:25:59,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:25:59,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:25:59,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:25:59,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:25:59,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:25:59,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:25:59,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:25:59,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:25:59,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:25:59,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:25:59,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:25:59,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:25:59,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:25:59,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:25:59,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:25:59,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:25:59,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:25:59,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:25:59,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:25:59,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:25:59,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:25:59,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:25:59,851 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:25:59,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:25:59,860 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:25:59,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:25:59,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:25:59,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:25:59,864 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:25:59,864 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:25:59,864 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:25:59,864 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:25:59,865 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:25:59,865 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:25:59,865 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:25:59,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:25:59,866 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:25:59,866 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:25:59,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:25:59,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:25:59,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:25:59,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:25:59,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:25:59,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:25:59,867 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:25:59,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:25:59,867 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:25:59,867 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:25:59,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:25:59,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:25:59,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:25:59,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:25:59,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:25:59,869 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:25:59,869 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:25:59,869 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e882693bcbcb1a63ff9494a2e39acf2974fbfcd [2021-08-27 16:26:00,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:26:00,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:26:00,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:26:00,112 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:26:00,112 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:26:00,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c [2021-08-27 16:26:00,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/507621c9f/a1cd0f2e1eab49328ea4bccbcb96f6d6/FLAG8b6149651 [2021-08-27 16:26:00,491 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:26:00,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c [2021-08-27 16:26:00,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/507621c9f/a1cd0f2e1eab49328ea4bccbcb96f6d6/FLAG8b6149651 [2021-08-27 16:26:00,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/507621c9f/a1cd0f2e1eab49328ea4bccbcb96f6d6 [2021-08-27 16:26:00,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:26:00,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:26:00,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:26:00,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:26:00,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:26:00,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:00" (1/1) ... [2021-08-27 16:26:00,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f998de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:00, skipping insertion in model container [2021-08-27 16:26:00,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:00" (1/1) ... [2021-08-27 16:26:00,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:26:00,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:26:01,090 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_product53.cil.c[17591,17604] [2021-08-27 16:26:01,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:26:01,109 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:26:01,184 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_product53.cil.c[17591,17604] [2021-08-27 16:26:01,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:26:01,199 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:26:01,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:01 WrapperNode [2021-08-27 16:26:01,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:26:01,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:26:01,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:26:01,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:26:01,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:01" (1/1) ... [2021-08-27 16:26:01,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:01" (1/1) ... [2021-08-27 16:26:01,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:26:01,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:26:01,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:26:01,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:26:01,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:01" (1/1) ... [2021-08-27 16:26:01,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:01" (1/1) ... [2021-08-27 16:26:01,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:01" (1/1) ... [2021-08-27 16:26:01,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:01" (1/1) ... [2021-08-27 16:26:01,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:01" (1/1) ... [2021-08-27 16:26:01,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:01" (1/1) ... [2021-08-27 16:26:01,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:01" (1/1) ... [2021-08-27 16:26:01,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:26:01,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:26:01,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:26:01,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:26:01,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:01" (1/1) ... [2021-08-27 16:26:01,283 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:26:01,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:26:01,294 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 16:26:01,315 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 16:26:01,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:26:01,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:26:01,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:26:01,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:26:02,067 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:26:02,067 INFO L299 CfgBuilder]: Removed 290 assume(true) statements. [2021-08-27 16:26:02,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:02 BoogieIcfgContainer [2021-08-27 16:26:02,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:26:02,069 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:26:02,069 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:26:02,071 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:26:02,072 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:26:02,072 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:26:00" (1/3) ... [2021-08-27 16:26:02,072 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@35096d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:26:02, skipping insertion in model container [2021-08-27 16:26:02,072 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:26:02,073 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:01" (2/3) ... [2021-08-27 16:26:02,073 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@35096d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:26:02, skipping insertion in model container [2021-08-27 16:26:02,073 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:26:02,073 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:02" (3/3) ... [2021-08-27 16:26:02,074 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product53.cil.c [2021-08-27 16:26:02,099 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:26:02,100 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:26:02,100 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:26:02,100 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:26:02,100 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:26:02,100 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:26:02,100 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:26:02,100 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:26:02,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 195 states, 194 states have (on average 1.5309278350515463) internal successors, (297), 194 states have internal predecessors, (297), 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 16:26:02,128 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 127 [2021-08-27 16:26:02,129 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:02,129 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:02,134 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:02,134 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:02,134 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:26:02,135 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 195 states, 194 states have (on average 1.5309278350515463) internal successors, (297), 194 states have internal predecessors, (297), 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 16:26:02,140 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 127 [2021-08-27 16:26:02,140 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:02,140 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:02,141 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:02,141 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:02,144 INFO L791 eck$LassoCheckResult]: Stem: 187#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(110, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 3 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string53.base, #t~string53.offset, 1);call write~init~int(80, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(117, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(109, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(112, #t~string53.base, 4 + #t~string53.offset, 1);call write~init~int(58, #t~string53.base, 5 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 6 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string59.base, #t~string59.offset, 1);call write~init~int(32, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string61.base, #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 1 + #t~string61.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 132#L-1true havoc main_#res;havoc main_#t~ret72, main_~retValue_acc~9, main_~tmp~10;havoc main_~retValue_acc~9;havoc main_~tmp~10; 85#L671true 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; 177#L679true main_#t~ret72 := valid_product_#res;main_~tmp~10 := main_#t~ret72;havoc main_#t~ret72; 100#L886true assume 0 != main_~tmp~10; 43#L862true ~switchedOnBeforeTS~0 := 0; 143#L760true havoc test_#t~nondet65, test_#t~nondet66, test_#t~nondet67, test_#t~nondet68, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 8#L781-1true [2021-08-27 16:26:02,144 INFO L793 eck$LassoCheckResult]: Loop: 8#L781-1true assume !false; 174#L698true assume test_~splverifierCounter~0 < 4; 134#L699true test_~tmp~8 := test_#t~nondet65;havoc test_#t~nondet65; 159#L707true assume !(0 != test_~tmp~8); 39#L707-1true test_~tmp___0~2 := test_#t~nondet66;havoc test_#t~nondet66; 12#L717true assume !(0 != test_~tmp___0~2); 34#L717-1true test_~tmp___2~0 := test_#t~nondet67;havoc test_#t~nondet67; 115#L727true assume 0 != test_~tmp___2~0; 101#L733-2true havoc __utac_acc__Specification5_spec__2_#t~ret69;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 26#L567true __utac_acc__Specification5_spec__2_#t~ret69 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret69;havoc __utac_acc__Specification5_spec__2_#t~ret69; 140#L770true assume !(0 != ~pumpRunning~0); 116#L430true assume !(0 != ~systemActive~0); 106#L437true havoc __utac_acc__Specification5_spec__3_#t~ret70, __utac_acc__Specification5_spec__3_#t~ret71, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 16#L984true __utac_acc__Specification5_spec__3_#t~ret70 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret70;havoc __utac_acc__Specification5_spec__3_#t~ret70; 68#L781true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 8#L781-1true [2021-08-27 16:26:02,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:02,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:26:02,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:02,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084600886] [2021-08-27 16:26:02,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:02,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:02,339 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:02,441 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:02,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:02,447 INFO L82 PathProgramCache]: Analyzing trace with hash 99399404, now seen corresponding path program 1 times [2021-08-27 16:26:02,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:02,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992172931] [2021-08-27 16:26:02,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:02,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:02,457 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:02,471 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:02,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:02,476 INFO L82 PathProgramCache]: Analyzing trace with hash 2033424614, now seen corresponding path program 1 times [2021-08-27 16:26:02,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:02,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762644662] [2021-08-27 16:26:02,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:02,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:26:02,608 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 16:26:02,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:26:02,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762644662] [2021-08-27 16:26:02,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762644662] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:26:02,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:26:02,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:26:02,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824913102] [2021-08-27 16:26:02,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:26:02,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:26:02,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:26:02,795 INFO L87 Difference]: Start difference. First operand has 195 states, 194 states have (on average 1.5309278350515463) internal successors, (297), 194 states have internal predecessors, (297), 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 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 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 16:26:02,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:26:02,894 INFO L93 Difference]: Finished difference Result 195 states and 286 transitions. [2021-08-27 16:26:02,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:26:02,896 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 195 states and 286 transitions. [2021-08-27 16:26:02,898 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 125 [2021-08-27 16:26:02,902 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 195 states to 188 states and 279 transitions. [2021-08-27 16:26:02,902 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 188 [2021-08-27 16:26:02,903 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2021-08-27 16:26:02,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 188 states and 279 transitions. [2021-08-27 16:26:02,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:26:02,904 INFO L681 BuchiCegarLoop]: Abstraction has 188 states and 279 transitions. [2021-08-27 16:26:02,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states and 279 transitions. [2021-08-27 16:26:02,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-08-27 16:26:02,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 188 states have (on average 1.4840425531914894) internal successors, (279), 187 states have internal predecessors, (279), 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 16:26:02,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 279 transitions. [2021-08-27 16:26:02,926 INFO L704 BuchiCegarLoop]: Abstraction has 188 states and 279 transitions. [2021-08-27 16:26:02,926 INFO L587 BuchiCegarLoop]: Abstraction has 188 states and 279 transitions. [2021-08-27 16:26:02,926 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:26:02,926 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 188 states and 279 transitions. [2021-08-27 16:26:02,927 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 125 [2021-08-27 16:26:02,927 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:02,927 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:02,928 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:02,928 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:02,928 INFO L791 eck$LassoCheckResult]: Stem: 592#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(110, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 3 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string53.base, #t~string53.offset, 1);call write~init~int(80, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(117, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(109, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(112, #t~string53.base, 4 + #t~string53.offset, 1);call write~init~int(58, #t~string53.base, 5 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 6 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string59.base, #t~string59.offset, 1);call write~init~int(32, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string61.base, #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 1 + #t~string61.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 494#L-1 havoc main_#res;havoc main_#t~ret72, main_~retValue_acc~9, main_~tmp~10;havoc main_~retValue_acc~9;havoc main_~tmp~10; 495#L671 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; 579#L679 main_#t~ret72 := valid_product_#res;main_~tmp~10 := main_#t~ret72;havoc main_#t~ret72; 580#L886 assume 0 != main_~tmp~10; 553#L862 ~switchedOnBeforeTS~0 := 0; 523#L760 havoc test_#t~nondet65, test_#t~nondet66, test_#t~nondet67, test_#t~nondet68, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 437#L781-1 [2021-08-27 16:26:02,929 INFO L793 eck$LassoCheckResult]: Loop: 437#L781-1 assume !false; 438#L698 assume test_~splverifierCounter~0 < 4; 501#L699 test_~tmp~8 := test_#t~nondet65;havoc test_#t~nondet65; 502#L707 assume !(0 != test_~tmp~8); 436#L707-1 test_~tmp___0~2 := test_#t~nondet66;havoc test_#t~nondet66; 456#L717 assume !(0 != test_~tmp___0~2); 458#L717-1 test_~tmp___2~0 := test_#t~nondet67;havoc test_#t~nondet67; 445#L727 assume 0 != test_~tmp___2~0; 447#L733-2 havoc __utac_acc__Specification5_spec__2_#t~ret69;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 506#L567 __utac_acc__Specification5_spec__2_#t~ret69 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret69;havoc __utac_acc__Specification5_spec__2_#t~ret69; 507#L770 assume !(0 != ~pumpRunning~0); 448#L430 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret44, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 449#L514 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret43, processEnvironment__wrappee__lowWaterSensor_~tmp~4;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~4; 428#L488-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret42, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 430#L462-3 assume !(0 == ~pumpRunning~0); 410#L437 havoc __utac_acc__Specification5_spec__3_#t~ret70, __utac_acc__Specification5_spec__3_#t~ret71, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 411#L984 __utac_acc__Specification5_spec__3_#t~ret70 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret70;havoc __utac_acc__Specification5_spec__3_#t~ret70; 474#L781 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 437#L781-1 [2021-08-27 16:26:02,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:02,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:26:02,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:02,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125291633] [2021-08-27 16:26:02,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:02,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:02,949 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:02,981 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:02,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:02,982 INFO L82 PathProgramCache]: Analyzing trace with hash -416203938, now seen corresponding path program 1 times [2021-08-27 16:26:02,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:02,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284051426] [2021-08-27 16:26:02,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:02,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:26:02,997 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 16:26:02,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:26:02,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284051426] [2021-08-27 16:26:02,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284051426] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:26:02,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:26:02,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:26:02,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694784606] [2021-08-27 16:26:02,998 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:26:02,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:26:02,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:26:02,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:26:02,999 INFO L87 Difference]: Start difference. First operand 188 states and 279 transitions. cyclomatic complexity: 93 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 16:26:03,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:26:03,116 INFO L93 Difference]: Finished difference Result 201 states and 278 transitions. [2021-08-27 16:26:03,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:26:03,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 201 states and 278 transitions. [2021-08-27 16:26:03,118 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 138 [2021-08-27 16:26:03,119 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 201 states to 201 states and 278 transitions. [2021-08-27 16:26:03,119 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 201 [2021-08-27 16:26:03,120 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 201 [2021-08-27 16:26:03,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 201 states and 278 transitions. [2021-08-27 16:26:03,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:26:03,121 INFO L681 BuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2021-08-27 16:26:03,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states and 278 transitions. [2021-08-27 16:26:03,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-08-27 16:26:03,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 201 states have (on average 1.3830845771144278) internal successors, (278), 200 states have internal predecessors, (278), 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 16:26:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 278 transitions. [2021-08-27 16:26:03,126 INFO L704 BuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2021-08-27 16:26:03,126 INFO L587 BuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2021-08-27 16:26:03,126 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:26:03,126 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 201 states and 278 transitions. [2021-08-27 16:26:03,127 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 138 [2021-08-27 16:26:03,127 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:03,127 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:03,128 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:03,128 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] [2021-08-27 16:26:03,128 INFO L791 eck$LassoCheckResult]: Stem: 960#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(110, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 3 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string53.base, #t~string53.offset, 1);call write~init~int(80, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(117, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(109, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(112, #t~string53.base, 4 + #t~string53.offset, 1);call write~init~int(58, #t~string53.base, 5 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 6 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string59.base, #t~string59.offset, 1);call write~init~int(32, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string61.base, #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 1 + #t~string61.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 867#L-1 havoc main_#res;havoc main_#t~ret72, main_~retValue_acc~9, main_~tmp~10;havoc main_~retValue_acc~9;havoc main_~tmp~10; 868#L671 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; 947#L679 main_#t~ret72 := valid_product_#res;main_~tmp~10 := main_#t~ret72;havoc main_#t~ret72; 948#L886 assume 0 != main_~tmp~10; 918#L862 ~switchedOnBeforeTS~0 := 0; 892#L760 havoc test_#t~nondet65, test_#t~nondet66, test_#t~nondet67, test_#t~nondet68, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 820#L781-1 [2021-08-27 16:26:03,129 INFO L793 eck$LassoCheckResult]: Loop: 820#L781-1 assume !false; 821#L698 assume test_~splverifierCounter~0 < 4; 942#L699 test_~tmp~8 := test_#t~nondet65;havoc test_#t~nondet65; 984#L707 assume !(0 != test_~tmp~8); 981#L707-1 test_~tmp___0~2 := test_#t~nondet66;havoc test_#t~nondet66; 976#L717 assume !(0 != test_~tmp___0~2); 973#L717-1 test_~tmp___2~0 := test_#t~nondet67;havoc test_#t~nondet67; 971#L727 assume 0 != test_~tmp___2~0; 968#L733-2 havoc __utac_acc__Specification5_spec__2_#t~ret69;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 966#L567 __utac_acc__Specification5_spec__2_#t~ret69 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret69;havoc __utac_acc__Specification5_spec__2_#t~ret69; 884#L770 assume !(0 != ~pumpRunning~0); 885#L430 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret44, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 920#L514 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret43, processEnvironment__wrappee__lowWaterSensor_~tmp~4;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~4; 814#L488-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret42, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 815#L462-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret62, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 944#L992-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 949#L997-3 isHighWaterLevel_#t~ret62 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret62;havoc isHighWaterLevel_#t~ret62; 927#L616-9 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~0 := 0; 928#L616-11 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 888#L622-3 processEnvironment__wrappee__highWaterSensor_#t~ret42 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~3 := processEnvironment__wrappee__highWaterSensor_#t~ret42;havoc processEnvironment__wrappee__highWaterSensor_#t~ret42; 889#L466-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~3); 803#L437 havoc __utac_acc__Specification5_spec__3_#t~ret70, __utac_acc__Specification5_spec__3_#t~ret71, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 804#L984 __utac_acc__Specification5_spec__3_#t~ret70 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret70;havoc __utac_acc__Specification5_spec__3_#t~ret70; 852#L781 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 820#L781-1 [2021-08-27 16:26:03,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:03,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:26:03,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:03,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136587097] [2021-08-27 16:26:03,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:03,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:03,156 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:03,178 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:03,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:03,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1258364778, now seen corresponding path program 1 times [2021-08-27 16:26:03,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:03,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869388420] [2021-08-27 16:26:03,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:03,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:26:03,210 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 16:26:03,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:26:03,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869388420] [2021-08-27 16:26:03,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869388420] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:26:03,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:26:03,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:26:03,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451877288] [2021-08-27 16:26:03,211 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:26:03,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:26:03,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:26:03,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:26:03,212 INFO L87 Difference]: Start difference. First operand 201 states and 278 transitions. cyclomatic complexity: 79 Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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 16:26:03,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:26:03,537 INFO L93 Difference]: Finished difference Result 577 states and 781 transitions. [2021-08-27 16:26:03,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:26:03,537 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 577 states and 781 transitions. [2021-08-27 16:26:03,540 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 367 [2021-08-27 16:26:03,553 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 577 states to 577 states and 781 transitions. [2021-08-27 16:26:03,553 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 577 [2021-08-27 16:26:03,554 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 577 [2021-08-27 16:26:03,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 577 states and 781 transitions. [2021-08-27 16:26:03,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:26:03,555 INFO L681 BuchiCegarLoop]: Abstraction has 577 states and 781 transitions. [2021-08-27 16:26:03,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states and 781 transitions. [2021-08-27 16:26:03,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 395. [2021-08-27 16:26:03,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 395 states have (on average 1.3468354430379748) internal successors, (532), 394 states have internal predecessors, (532), 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 16:26:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 532 transitions. [2021-08-27 16:26:03,565 INFO L704 BuchiCegarLoop]: Abstraction has 395 states and 532 transitions. [2021-08-27 16:26:03,565 INFO L587 BuchiCegarLoop]: Abstraction has 395 states and 532 transitions. [2021-08-27 16:26:03,565 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:26:03,565 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 395 states and 532 transitions. [2021-08-27 16:26:03,567 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 276 [2021-08-27 16:26:03,567 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:26:03,567 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:26:03,567 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:26:03,567 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, 1] [2021-08-27 16:26:03,567 INFO L791 eck$LassoCheckResult]: Stem: 1758#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(110, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string51.base, #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(102, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 3 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string53.base, #t~string53.offset, 1);call write~init~int(80, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(117, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(109, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(112, #t~string53.base, 4 + #t~string53.offset, 1);call write~init~int(58, #t~string53.base, 5 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 6 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(110, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 2 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(102, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 3 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string59.base, #t~string59.offset, 1);call write~init~int(32, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string61.base, #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 1 + #t~string61.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(13);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(77, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(101, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(116, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(104, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string78.base, #t~string78.offset, 1);call write~init~int(82, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(73, #t~string78.base, 2 + #t~string78.offset, 1);call write~init~int(84, #t~string78.base, 3 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 4 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(75, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 2 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 1 + #t~string82.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1661#L-1 havoc main_#res;havoc main_#t~ret72, main_~retValue_acc~9, main_~tmp~10;havoc main_~retValue_acc~9;havoc main_~tmp~10; 1662#L671 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; 1741#L679 main_#t~ret72 := valid_product_#res;main_~tmp~10 := main_#t~ret72;havoc main_#t~ret72; 1742#L886 assume 0 != main_~tmp~10; 1712#L862 ~switchedOnBeforeTS~0 := 0; 1684#L760 havoc test_#t~nondet65, test_#t~nondet66, test_#t~nondet67, test_#t~nondet68, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1614#L781-1 [2021-08-27 16:26:03,568 INFO L793 eck$LassoCheckResult]: Loop: 1614#L781-1 assume !false; 1615#L698 assume test_~splverifierCounter~0 < 4; 1736#L699 test_~tmp~8 := test_#t~nondet65;havoc test_#t~nondet65; 1990#L707 assume !(0 != test_~tmp~8); 1989#L707-1 test_~tmp___0~2 := test_#t~nondet66;havoc test_#t~nondet66; 1988#L717 assume !(0 != test_~tmp___0~2); 1986#L717-1 test_~tmp___2~0 := test_#t~nondet67;havoc test_#t~nondet67; 1985#L727 assume 0 != test_~tmp___2~0; 1761#L733-2 havoc __utac_acc__Specification5_spec__2_#t~ret69;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 1672#L567 __utac_acc__Specification5_spec__2_#t~ret69 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret69;havoc __utac_acc__Specification5_spec__2_#t~ret69; 1673#L770 assume !(0 != ~pumpRunning~0); 1623#L430 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret44, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1624#L514 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret43, processEnvironment__wrappee__lowWaterSensor_~tmp~4;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~4; 1608#L488-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret42, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 1609#L462-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret62, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 1738#L992-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 1757#L997-3 isHighWaterLevel_#t~ret62 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret62;havoc isHighWaterLevel_#t~ret62; 1966#L616-9 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~0 := 0; 1751#L616-11 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 1680#L622-3 processEnvironment__wrappee__highWaterSensor_#t~ret42 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~3 := processEnvironment__wrappee__highWaterSensor_#t~ret42;havoc processEnvironment__wrappee__highWaterSensor_#t~ret42; 1681#L466-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~3); 1597#L437 havoc __utac_acc__Specification5_spec__3_#t~ret70, __utac_acc__Specification5_spec__3_#t~ret71, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 1598#L984 __utac_acc__Specification5_spec__3_#t~ret70 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret70;havoc __utac_acc__Specification5_spec__3_#t~ret70; 1646#L781 assume 2 != __utac_acc__Specification5_spec__3_~tmp~9;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 1728#L567-1 __utac_acc__Specification5_spec__3_#t~ret71 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~3 := __utac_acc__Specification5_spec__3_#t~ret71;havoc __utac_acc__Specification5_spec__3_#t~ret71; 1729#L785 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3); 1614#L781-1 [2021-08-27 16:26:03,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:03,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:26:03,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:03,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847377055] [2021-08-27 16:26:03,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:03,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:03,603 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:03,655 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:03,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:03,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1892234555, now seen corresponding path program 1 times [2021-08-27 16:26:03,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:03,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17310273] [2021-08-27 16:26:03,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:03,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:03,659 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:03,662 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:03,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:26:03,676 INFO L82 PathProgramCache]: Analyzing trace with hash 436521099, now seen corresponding path program 1 times [2021-08-27 16:26:03,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:26:03,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473548363] [2021-08-27 16:26:03,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:26:03,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:26:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:03,707 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:26:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:26:03,745 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:44,845 WARN L207 SmtUtils]: Spent 40.66 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:27:26,437 WARN L207 SmtUtils]: Spent 20.16 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:27:26,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:27:26 BoogieIcfgContainer [2021-08-27 16:27:26,561 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:27:26,561 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:27:26,561 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:27:26,562 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:27:26,562 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:02" (3/4) ... [2021-08-27 16:27:26,563 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:27:26,638 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:27:26,638 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:27:26,639 INFO L168 Benchmark]: Toolchain (without parser) took 85744.68 ms. Allocated memory was 44.0 MB in the beginning and 144.7 MB in the end (delta: 100.7 MB). Free memory was 28.3 MB in the beginning and 82.5 MB in the end (delta: -54.2 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:26,639 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 44.0 MB. Free memory was 26.7 MB in the beginning and 26.6 MB in the end (delta: 40.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:27:26,640 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.73 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 28.1 MB in the beginning and 32.1 MB in the end (delta: -4.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:26,640 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.15 ms. Allocated memory is still 54.5 MB. Free memory was 31.9 MB in the beginning and 27.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:26,640 INFO L168 Benchmark]: Boogie Preprocessor took 36.29 ms. Allocated memory is still 54.5 MB. Free memory was 27.3 MB in the beginning and 36.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:26,640 INFO L168 Benchmark]: RCFGBuilder took 790.75 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 36.1 MB in the beginning and 37.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:26,641 INFO L168 Benchmark]: BuchiAutomizer took 84491.92 ms. Allocated memory was 69.2 MB in the beginning and 144.7 MB in the end (delta: 75.5 MB). Free memory was 37.0 MB in the beginning and 85.7 MB in the end (delta: -48.7 MB). Peak memory consumption was 87.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:26,641 INFO L168 Benchmark]: Witness Printer took 77.16 ms. Allocated memory is still 144.7 MB. Free memory was 84.6 MB in the beginning and 82.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:26,642 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 44.0 MB. Free memory was 26.7 MB in the beginning and 26.6 MB in the end (delta: 40.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 304.73 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 28.1 MB in the beginning and 32.1 MB in the end (delta: -4.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.15 ms. Allocated memory is still 54.5 MB. Free memory was 31.9 MB in the beginning and 27.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.29 ms. Allocated memory is still 54.5 MB. Free memory was 27.3 MB in the beginning and 36.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * RCFGBuilder took 790.75 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 36.1 MB in the beginning and 37.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 84491.92 ms. Allocated memory was 69.2 MB in the beginning and 144.7 MB in the end (delta: 75.5 MB). Free memory was 37.0 MB in the beginning and 85.7 MB in the end (delta: -48.7 MB). Peak memory consumption was 87.8 MB. Max. memory is 16.1 GB. * Witness Printer took 77.16 ms. Allocated memory is still 144.7 MB. Free memory was 84.6 MB in the beginning and 82.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 395 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 84.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 83.7s. Construction of modules took 0.3s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 27.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 182 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 395 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 845 SDtfs, 1995 SDslu, 843 SDs, 0 SdLazy, 169 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 353.2ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 697]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=8160} State at position 1 is {retValue_acc=1, NULL=0, NULL=8176, NULL=8160, methaneLevelCritical=0, NULL=8171, NULL=0, retValue_acc=0, tmp=0, tmp___1=0, NULL=8174, NULL=0, NULL=8173, NULL=8177, cleanupTimeShifts=4, tmp=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@696a771=0, waterLevel=1, NULL=0, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66a5de56=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5e58ce8b=0, NULL=8182, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@31582d95=0, NULL=8164, NULL=0, NULL=0, NULL=0, \result=1, NULL=0, NULL=8165, NULL=0, NULL=0, tmp___0=0, NULL=8161, NULL=8185, tmp=1, NULL=8188, NULL=8167, head=0, NULL=0, NULL=0, tmp=0, NULL=8184, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4c2c1073=0, NULL=0, NULL=8181, retValue_acc=0, NULL=8175, NULL=0, tmp=1, tmp___0=0, NULL=8168, tmp=0, NULL=0, NULL=8179, tmp=0, NULL=8170, switchedOnBeforeTS=0, NULL=8187, \result=0, NULL=8169, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@257f3762=0, NULL=8162, \result=0, NULL=8183, NULL=0, NULL=0, NULL=0, NULL=8178, NULL=8166, \result=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e22e578=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6707bb4b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4445d385=55, NULL=0, NULL=8172, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@642a0bde=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1eff22df=0, NULL=8180, retValue_acc=1, tmp___2=55, splverifierCounter=0, NULL=0, NULL=0, NULL=8186, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@787028c0=0, NULL=8163, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L418] int pumpRunning = 0; [L419] int systemActive = 1; [L754] int switchedOnBeforeTS ; [L803] int cleanupTimeShifts = 4; [L909] int waterLevel = 1; [L910] int methaneLevelCritical = 0; [L877] int retValue_acc ; [L878] int tmp ; [L675] int retValue_acc ; [L678] retValue_acc = 1 [L679] return (retValue_acc); [L884] tmp = valid_product() [L886] COND TRUE \read(tmp) [L759] switchedOnBeforeTS = 0 [L688] int splverifierCounter ; [L689] int tmp ; [L690] int tmp___0 ; [L691] int tmp___1 ; [L692] int tmp___2 ; [L695] splverifierCounter = 0 Loop: [L697] COND TRUE 1 [L699] COND TRUE splverifierCounter < 4 [L705] tmp = __VERIFIER_nondet_int() [L707] COND FALSE !(\read(tmp)) [L715] tmp___0 = __VERIFIER_nondet_int() [L717] COND FALSE !(\read(tmp___0)) [L725] tmp___2 = __VERIFIER_nondet_int() [L727] COND TRUE \read(tmp___2) [L563] int retValue_acc ; [L566] retValue_acc = pumpRunning [L567] return (retValue_acc); [L768] switchedOnBeforeTS = isPumpRunning() [L430] COND FALSE !(\read(pumpRunning)) [L437] COND TRUE \read(systemActive) [L511] int tmp ; [L514] COND FALSE !(\read(pumpRunning)) [L485] int tmp ; [L488] COND FALSE !(\read(pumpRunning)) [L459] int tmp ; [L462] COND TRUE ! pumpRunning [L608] int retValue_acc ; [L609] int tmp ; [L610] int tmp___0 ; [L989] int retValue_acc ; [L992] COND TRUE waterLevel < 2 [L993] retValue_acc = 1 [L994] return (retValue_acc); [L614] tmp = isHighWaterSensorDry() [L616] COND TRUE \read(tmp) [L617] tmp___0 = 0 [L621] retValue_acc = tmp___0 [L622] return (retValue_acc); [L464] tmp = isHighWaterLevel() [L466] COND FALSE !(\read(tmp)) [L774] int tmp ; [L775] int tmp___0 ; [L980] int retValue_acc ; [L983] retValue_acc = waterLevel [L984] return (retValue_acc); [L779] tmp = getWaterLevel() [L781] COND TRUE tmp != 2 [L563] int retValue_acc ; [L566] retValue_acc = pumpRunning [L567] return (retValue_acc); [L783] tmp___0 = isPumpRunning() [L785] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:27:26,682 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...