./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product47.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_spec4_product47.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 58d8e3bdac126218d105f0be97d14e97f305aadd ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:18:07,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:18:07,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:18:07,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:18:07,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:18:07,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:18:07,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:18:07,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:18:07,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:18:07,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:18:07,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:18:07,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:18:07,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:18:07,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:18:07,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:18:07,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:18:07,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:18:07,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:18:07,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:18:07,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:18:07,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:18:07,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:18:07,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:18:07,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:18:07,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:18:07,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:18:07,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:18:07,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:18:07,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:18:07,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:18:07,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:18:07,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:18:07,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:18:07,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:18:07,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:18:07,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:18:07,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:18:07,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:18:07,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:18:07,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:18:07,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:18:07,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:18:07,865 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:18:07,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:18:07,866 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:18:07,866 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:18:07,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:18:07,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:18:07,868 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:18:07,868 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:18:07,868 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:18:07,868 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:18:07,869 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:18:07,869 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:18:07,869 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:18:07,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:18:07,869 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:18:07,869 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:18:07,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:18:07,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:18:07,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:18:07,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:18:07,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:18:07,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:18:07,870 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:18:07,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:18:07,870 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:18:07,870 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:18:07,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:18:07,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:18:07,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:18:07,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:18:07,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:18:07,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:18:07,872 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:18:07,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58d8e3bdac126218d105f0be97d14e97f305aadd [2021-08-27 16:18:08,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:18:08,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:18:08,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:18:08,141 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:18:08,142 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:18:08,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2021-08-27 16:18:08,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4737bfd5/762b25671f9d4eb1a60cd6e6b227d552/FLAGe3a407794 [2021-08-27 16:18:08,608 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:18:08,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2021-08-27 16:18:08,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4737bfd5/762b25671f9d4eb1a60cd6e6b227d552/FLAGe3a407794 [2021-08-27 16:18:08,630 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4737bfd5/762b25671f9d4eb1a60cd6e6b227d552 [2021-08-27 16:18:08,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:18:08,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:18:08,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:18:08,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:18:08,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:18:08,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:18:08" (1/1) ... [2021-08-27 16:18:08,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f77f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:18:08, skipping insertion in model container [2021-08-27 16:18:08,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:18:08" (1/1) ... [2021-08-27 16:18:08,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:18:08,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:18:08,848 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_spec4_product47.cil.c[16386,16399] [2021-08-27 16:18:08,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:18:08,867 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:18:08,905 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_spec4_product47.cil.c[16386,16399] [2021-08-27 16:18:08,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:18:08,920 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:18:08,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:18:08 WrapperNode [2021-08-27 16:18:08,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:18:08,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:18:08,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:18:08,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:18:08,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:18:08" (1/1) ... [2021-08-27 16:18:08,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:18:08" (1/1) ... [2021-08-27 16:18:08,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:18:08,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:18:08,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:18:08,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:18:08,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:18:08" (1/1) ... [2021-08-27 16:18:08,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:18:08" (1/1) ... [2021-08-27 16:18:08,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:18:08" (1/1) ... [2021-08-27 16:18:08,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:18:08" (1/1) ... [2021-08-27 16:18:09,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:18:08" (1/1) ... [2021-08-27 16:18:09,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:18:08" (1/1) ... [2021-08-27 16:18:09,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:18:08" (1/1) ... [2021-08-27 16:18:09,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:18:09,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:18:09,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:18:09,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:18:09,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:18:08" (1/1) ... [2021-08-27 16:18:09,030 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:18:09,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:18:09,054 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 16:18:09,056 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 16:18:09,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:18:09,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:18:09,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:18:09,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:18:09,716 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:18:09,716 INFO L299 CfgBuilder]: Removed 196 assume(true) statements. [2021-08-27 16:18:09,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:18:09 BoogieIcfgContainer [2021-08-27 16:18:09,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:18:09,719 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:18:09,719 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:18:09,722 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:18:09,722 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:18:09,723 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:18:08" (1/3) ... [2021-08-27 16:18:09,723 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@49a3b20b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:18:09, skipping insertion in model container [2021-08-27 16:18:09,723 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:18:09,723 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:18:08" (2/3) ... [2021-08-27 16:18:09,724 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@49a3b20b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:18:09, skipping insertion in model container [2021-08-27 16:18:09,724 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:18:09,724 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:18:09" (3/3) ... [2021-08-27 16:18:09,725 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product47.cil.c [2021-08-27 16:18:09,759 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:18:09,759 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:18:09,760 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:18:09,760 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:18:09,760 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:18:09,760 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:18:09,760 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:18:09,760 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:18:09,777 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 128 states, 127 states have (on average 1.5118110236220472) internal successors, (192), 127 states have internal predecessors, (192), 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 16:18:09,803 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-08-27 16:18:09,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:18:09,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:18:09,809 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:18:09,809 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:18:09,809 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:18:09,810 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 128 states, 127 states have (on average 1.5118110236220472) internal successors, (192), 127 states have internal predecessors, (192), 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 16:18:09,814 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-08-27 16:18:09,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:18:09,814 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:18:09,815 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:18:09,815 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:18:09,818 INFO L791 eck$LassoCheckResult]: Stem: 115#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(21);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 34#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 91#L857true 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; 96#L865true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 120#L132true assume 0 != main_~tmp~0; 15#L105true havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 94#L808-1true [2021-08-27 16:18:09,818 INFO L793 eck$LassoCheckResult]: Loop: 94#L808-1true assume !false; 12#L158true assume test_~splverifierCounter~0 < 4; 66#L159true test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 18#L167true assume !(0 != test_~tmp~1); 106#L167-1true test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 46#L177true assume !(0 != test_~tmp___0~0); 51#L177-1true test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 118#L187true assume 0 != test_~tmp___2~0; 93#L193-1true assume !(0 != ~pumpRunning~0); 127#L229true assume !(0 != ~systemActive~0); 58#L236true havoc __utac_acc__Specification4_spec__1_#t~ret68, __utac_acc__Specification4_spec__1_#t~ret69, __utac_acc__Specification4_spec__1_~tmp~9, __utac_acc__Specification4_spec__1_~tmp___0~2;havoc __utac_acc__Specification4_spec__1_~tmp~9;havoc __utac_acc__Specification4_spec__1_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 89#L945true __utac_acc__Specification4_spec__1_#t~ret68 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~9 := __utac_acc__Specification4_spec__1_#t~ret68;havoc __utac_acc__Specification4_spec__1_#t~ret68; 95#L808true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9); 94#L808-1true [2021-08-27 16:18:09,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:18:09,822 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:18:09,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:18:09,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945365823] [2021-08-27 16:18:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:18:09,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:18:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:18:09,988 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:18:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:18:10,093 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:18:10,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:18:10,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1670724661, now seen corresponding path program 1 times [2021-08-27 16:18:10,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:18:10,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408813916] [2021-08-27 16:18:10,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:18:10,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:18:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:18:10,099 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:18:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:18:10,104 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:18:10,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:18:10,111 INFO L82 PathProgramCache]: Analyzing trace with hash 43554277, now seen corresponding path program 1 times [2021-08-27 16:18:10,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:18:10,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085869067] [2021-08-27 16:18:10,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:18:10,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:18:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:18:10,214 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 16:18:10,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:18:10,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085869067] [2021-08-27 16:18:10,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085869067] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:18:10,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:18:10,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:18:10,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697999902] [2021-08-27 16:18:10,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:18:10,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:18:10,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:18:10,352 INFO L87 Difference]: Start difference. First operand has 128 states, 127 states have (on average 1.5118110236220472) internal successors, (192), 127 states have internal predecessors, (192), 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 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 16:18:10,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:18:10,533 INFO L93 Difference]: Finished difference Result 300 states and 426 transitions. [2021-08-27 16:18:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:18:10,535 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 300 states and 426 transitions. [2021-08-27 16:18:10,543 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 193 [2021-08-27 16:18:10,547 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 300 states to 279 states and 405 transitions. [2021-08-27 16:18:10,548 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 279 [2021-08-27 16:18:10,549 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 279 [2021-08-27 16:18:10,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 279 states and 405 transitions. [2021-08-27 16:18:10,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:18:10,550 INFO L681 BuchiCegarLoop]: Abstraction has 279 states and 405 transitions. [2021-08-27 16:18:10,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states and 405 transitions. [2021-08-27 16:18:10,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 162. [2021-08-27 16:18:10,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 162 states have (on average 1.4444444444444444) internal successors, (234), 161 states have internal predecessors, (234), 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 16:18:10,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 234 transitions. [2021-08-27 16:18:10,591 INFO L704 BuchiCegarLoop]: Abstraction has 162 states and 234 transitions. [2021-08-27 16:18:10,591 INFO L587 BuchiCegarLoop]: Abstraction has 162 states and 234 transitions. [2021-08-27 16:18:10,591 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:18:10,591 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 162 states and 234 transitions. [2021-08-27 16:18:10,594 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 112 [2021-08-27 16:18:10,594 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:18:10,594 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:18:10,595 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:18:10,595 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:18:10,596 INFO L791 eck$LassoCheckResult]: Stem: 566#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(21);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 504#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 505#L857 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; 555#L865 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 557#L132 assume 0 != main_~tmp~0; 471#L105 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 472#L808-1 [2021-08-27 16:18:10,596 INFO L793 eck$LassoCheckResult]: Loop: 472#L808-1 assume !false; 464#L158 assume test_~splverifierCounter~0 < 4; 465#L159 test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 477#L167 assume !(0 != test_~tmp~1); 476#L167-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 517#L177 assume !(0 != test_~tmp___0~0); 518#L177-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 527#L187 assume 0 != test_~tmp___2~0; 524#L193-1 assume !(0 != ~pumpRunning~0); 551#L229 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 533#L287 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 535#L261-1 assume !(0 == ~pumpRunning~0); 449#L236 havoc __utac_acc__Specification4_spec__1_#t~ret68, __utac_acc__Specification4_spec__1_#t~ret69, __utac_acc__Specification4_spec__1_~tmp~9, __utac_acc__Specification4_spec__1_~tmp___0~2;havoc __utac_acc__Specification4_spec__1_~tmp~9;havoc __utac_acc__Specification4_spec__1_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 532#L945 __utac_acc__Specification4_spec__1_#t~ret68 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~9 := __utac_acc__Specification4_spec__1_#t~ret68;havoc __utac_acc__Specification4_spec__1_#t~ret68; 553#L808 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9); 472#L808-1 [2021-08-27 16:18:10,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:18:10,597 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:18:10,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:18:10,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522442545] [2021-08-27 16:18:10,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:18:10,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:18:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:18:10,648 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:18:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:18:10,697 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:18:10,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:18:10,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1966055757, now seen corresponding path program 1 times [2021-08-27 16:18:10,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:18:10,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233974743] [2021-08-27 16:18:10,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:18:10,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:18:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:18:10,719 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 16:18:10,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:18:10,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233974743] [2021-08-27 16:18:10,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233974743] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:18:10,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:18:10,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:18:10,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816624972] [2021-08-27 16:18:10,724 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:18:10,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:18:10,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:18:10,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:18:10,725 INFO L87 Difference]: Start difference. First operand 162 states and 234 transitions. cyclomatic complexity: 75 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:18:10,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:18:10,799 INFO L93 Difference]: Finished difference Result 201 states and 274 transitions. [2021-08-27 16:18:10,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:18:10,800 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 201 states and 274 transitions. [2021-08-27 16:18:10,801 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 142 [2021-08-27 16:18:10,802 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 201 states to 201 states and 274 transitions. [2021-08-27 16:18:10,802 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 201 [2021-08-27 16:18:10,803 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 201 [2021-08-27 16:18:10,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 201 states and 274 transitions. [2021-08-27 16:18:10,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:18:10,804 INFO L681 BuchiCegarLoop]: Abstraction has 201 states and 274 transitions. [2021-08-27 16:18:10,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states and 274 transitions. [2021-08-27 16:18:10,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-08-27 16:18:10,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 201 states have (on average 1.36318407960199) internal successors, (274), 200 states have internal predecessors, (274), 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 16:18:10,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 274 transitions. [2021-08-27 16:18:10,824 INFO L704 BuchiCegarLoop]: Abstraction has 201 states and 274 transitions. [2021-08-27 16:18:10,824 INFO L587 BuchiCegarLoop]: Abstraction has 201 states and 274 transitions. [2021-08-27 16:18:10,824 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:18:10,825 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 201 states and 274 transitions. [2021-08-27 16:18:10,825 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 142 [2021-08-27 16:18:10,825 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:18:10,825 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:18:10,826 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:18:10,826 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] [2021-08-27 16:18:10,826 INFO L791 eck$LassoCheckResult]: Stem: 945#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(21);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 874#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 875#L857 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; 932#L865 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 935#L132 assume 0 != main_~tmp~0; 841#L105 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 842#L808-1 [2021-08-27 16:18:10,826 INFO L793 eck$LassoCheckResult]: Loop: 842#L808-1 assume !false; 833#L158 assume test_~splverifierCounter~0 < 4; 834#L159 test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 1015#L167 assume !(0 != test_~tmp~1); 1013#L167-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 1012#L177 assume !(0 != test_~tmp___0~0); 898#L177-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 899#L187 assume 0 != test_~tmp___2~0; 895#L193-1 assume !(0 != ~pumpRunning~0); 934#L229 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 907#L287 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 908#L261-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~3, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~3;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 916#L953-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~11 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 921#L958-1 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 922#L406-3 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 839#L406-5 isHighWaterLevel_~retValue_acc~3 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~3; 840#L412-1 processEnvironment__wrappee__methaneQuery_#t~ret12 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~2 := processEnvironment__wrappee__methaneQuery_#t~ret12;havoc processEnvironment__wrappee__methaneQuery_#t~ret12; 923#L265-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~2); 820#L236 havoc __utac_acc__Specification4_spec__1_#t~ret68, __utac_acc__Specification4_spec__1_#t~ret69, __utac_acc__Specification4_spec__1_~tmp~9, __utac_acc__Specification4_spec__1_~tmp___0~2;havoc __utac_acc__Specification4_spec__1_~tmp~9;havoc __utac_acc__Specification4_spec__1_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 991#L945 __utac_acc__Specification4_spec__1_#t~ret68 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~9 := __utac_acc__Specification4_spec__1_#t~ret68;havoc __utac_acc__Specification4_spec__1_#t~ret68; 989#L808 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9); 842#L808-1 [2021-08-27 16:18:10,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:18:10,826 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:18:10,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:18:10,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373508081] [2021-08-27 16:18:10,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:18:10,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:18:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:18:10,857 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:18:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:18:10,905 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:18:10,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:18:10,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1687938725, now seen corresponding path program 1 times [2021-08-27 16:18:10,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:18:10,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850527839] [2021-08-27 16:18:10,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:18:10,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:18:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:18:10,935 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 16:18:10,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:18:10,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850527839] [2021-08-27 16:18:10,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850527839] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:18:10,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:18:10,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:18:10,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440365642] [2021-08-27 16:18:10,936 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:18:10,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:18:10,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 16:18:10,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 16:18:10,937 INFO L87 Difference]: Start difference. First operand 201 states and 274 transitions. cyclomatic complexity: 76 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 16:18:11,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:18:11,034 INFO L93 Difference]: Finished difference Result 567 states and 762 transitions. [2021-08-27 16:18:11,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:18:11,034 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 567 states and 762 transitions. [2021-08-27 16:18:11,039 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 410 [2021-08-27 16:18:11,042 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 567 states to 567 states and 762 transitions. [2021-08-27 16:18:11,042 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 567 [2021-08-27 16:18:11,043 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 567 [2021-08-27 16:18:11,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 567 states and 762 transitions. [2021-08-27 16:18:11,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:18:11,048 INFO L681 BuchiCegarLoop]: Abstraction has 567 states and 762 transitions. [2021-08-27 16:18:11,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states and 762 transitions. [2021-08-27 16:18:11,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 213. [2021-08-27 16:18:11,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 213 states have (on average 1.3427230046948357) internal successors, (286), 212 states have internal predecessors, (286), 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 16:18:11,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 286 transitions. [2021-08-27 16:18:11,057 INFO L704 BuchiCegarLoop]: Abstraction has 213 states and 286 transitions. [2021-08-27 16:18:11,057 INFO L587 BuchiCegarLoop]: Abstraction has 213 states and 286 transitions. [2021-08-27 16:18:11,057 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:18:11,057 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 213 states and 286 transitions. [2021-08-27 16:18:11,058 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 150 [2021-08-27 16:18:11,058 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:18:11,058 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:18:11,058 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:18:11,059 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] [2021-08-27 16:18:11,059 INFO L791 eck$LassoCheckResult]: Stem: 1741#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(21);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1656#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1657#L857 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; 1724#L865 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1728#L132 assume 0 != main_~tmp~0; 1620#L105 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1621#L808-1 [2021-08-27 16:18:11,059 INFO L793 eck$LassoCheckResult]: Loop: 1621#L808-1 assume !false; 1790#L158 assume test_~splverifierCounter~0 < 4; 1789#L159 test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 1627#L167 assume !(0 != test_~tmp~1); 1626#L167-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 1672#L177 assume !(0 != test_~tmp___0~0); 1673#L177-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 1683#L187 assume 0 != test_~tmp___2~0; 1680#L193-1 assume !(0 != ~pumpRunning~0); 1726#L229 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1691#L287 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 1692#L261-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~3, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~3;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 1702#L953-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 1712#L958-1 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 1740#L406-3 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 1618#L406-5 isHighWaterLevel_~retValue_acc~3 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~3; 1619#L412-1 processEnvironment__wrappee__methaneQuery_#t~ret12 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~2 := processEnvironment__wrappee__methaneQuery_#t~ret12;havoc processEnvironment__wrappee__methaneQuery_#t~ret12; 1714#L265-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~2); 1598#L236 havoc __utac_acc__Specification4_spec__1_#t~ret68, __utac_acc__Specification4_spec__1_#t~ret69, __utac_acc__Specification4_spec__1_~tmp~9, __utac_acc__Specification4_spec__1_~tmp___0~2;havoc __utac_acc__Specification4_spec__1_~tmp~9;havoc __utac_acc__Specification4_spec__1_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 1690#L945 __utac_acc__Specification4_spec__1_#t~ret68 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~9 := __utac_acc__Specification4_spec__1_#t~ret68;havoc __utac_acc__Specification4_spec__1_#t~ret68; 1722#L808 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9); 1621#L808-1 [2021-08-27 16:18:11,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:18:11,059 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-08-27 16:18:11,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:18:11,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325407076] [2021-08-27 16:18:11,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:18:11,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:18:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:18:11,079 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:18:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:18:11,101 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:18:11,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:18:11,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1926970201, now seen corresponding path program 1 times [2021-08-27 16:18:11,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:18:11,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153723967] [2021-08-27 16:18:11,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:18:11,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:18:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:18:11,108 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:18:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:18:11,112 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:18:11,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:18:11,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1911925901, now seen corresponding path program 1 times [2021-08-27 16:18:11,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:18:11,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990252718] [2021-08-27 16:18:11,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:18:11,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:18:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:18:11,150 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:18:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:18:11,186 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:18:51,054 WARN L207 SmtUtils]: Spent 39.66 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:19:31,431 WARN L207 SmtUtils]: Spent 19.81 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:19:31,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:19:31 BoogieIcfgContainer [2021-08-27 16:19:31,514 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:19:31,514 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:19:31,514 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:19:31,514 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:19:31,515 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:18:09" (3/4) ... [2021-08-27 16:19:31,516 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:19:31,543 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:19:31,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:19:31,544 INFO L168 Benchmark]: Toolchain (without parser) took 82910.72 ms. Allocated memory was 54.5 MB in the beginning and 146.8 MB in the end (delta: 92.3 MB). Free memory was 30.6 MB in the beginning and 70.5 MB in the end (delta: -39.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:31,544 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.4 MB in the beginning and 36.4 MB in the end (delta: 26.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:19:31,544 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.53 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.4 MB in the beginning and 42.2 MB in the end (delta: -11.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:31,545 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.25 ms. Allocated memory is still 67.1 MB. Free memory was 42.2 MB in the beginning and 38.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:31,545 INFO L168 Benchmark]: Boogie Preprocessor took 49.38 ms. Allocated memory is still 67.1 MB. Free memory was 38.4 MB in the beginning and 35.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:31,545 INFO L168 Benchmark]: RCFGBuilder took 698.51 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 35.5 MB in the beginning and 55.5 MB in the end (delta: -20.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:31,545 INFO L168 Benchmark]: BuchiAutomizer took 81794.78 ms. Allocated memory was 81.8 MB in the beginning and 146.8 MB in the end (delta: 65.0 MB). Free memory was 55.5 MB in the beginning and 72.6 MB in the end (delta: -17.1 MB). Peak memory consumption was 93.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:31,546 INFO L168 Benchmark]: Witness Printer took 28.90 ms. Allocated memory is still 146.8 MB. Free memory was 72.6 MB in the beginning and 70.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:31,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.4 MB in the beginning and 36.4 MB in the end (delta: 26.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.53 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.4 MB in the beginning and 42.2 MB in the end (delta: -11.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.25 ms. Allocated memory is still 67.1 MB. Free memory was 42.2 MB in the beginning and 38.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.38 ms. Allocated memory is still 67.1 MB. Free memory was 38.4 MB in the beginning and 35.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 698.51 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 35.5 MB in the beginning and 55.5 MB in the end (delta: -20.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 81794.78 ms. Allocated memory was 81.8 MB in the beginning and 146.8 MB in the end (delta: 65.0 MB). Free memory was 55.5 MB in the beginning and 72.6 MB in the end (delta: -17.1 MB). Peak memory consumption was 93.3 MB. Max. memory is 16.1 GB. * Witness Printer took 28.90 ms. Allocated memory is still 146.8 MB. Free memory was 72.6 MB in the beginning and 70.5 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 213 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 81.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 81.1s. Construction of modules took 0.2s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 57.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 471 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 213 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 684 SDtfs, 1334 SDslu, 1185 SDs, 0 SdLazy, 129 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 204.3ms 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: 157]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=14150} State at position 1 is {NULL=0, NULL=0, NULL=14177, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d43935=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@793a77cd=0, retValue_acc=1, NULL=14150, NULL=0, NULL=14169, methaneLevelCritical=0, NULL=14161, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4de0bdd1=0, retValue_acc=0, tmp___1=0, NULL=14160, NULL=14156, NULL=0, cleanupTimeShifts=4, tmp=0, NULL=14151, NULL=0, NULL=0, waterLevel=1, tmp___0=0, NULL=14164, \result=1, head=0, pumpRunning=0, tmp=1, NULL=14172, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@711df923=0, \result=1, NULL=0, NULL=14171, NULL=0, NULL=0, NULL=0, tmp=1, tmp=1, NULL=14178, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6147e23c=0, tmp=0, head=0, NULL=14158, NULL=0, NULL=14175, tmp=0, NULL=0, retValue_acc=0, NULL=0, NULL=14174, NULL=14170, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f8f6659=70, NULL=14173, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12c2a2fe=0, NULL=0, tmp___0=0, NULL=0, NULL=14168, NULL=0, NULL=14159, NULL=14163, tmp___0=0, NULL=14166, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=14155, \result=0, NULL=14162, NULL=14152, NULL=0, NULL=0, NULL=0, retValue_acc=1, NULL=14157, tmp___2=70, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=14154, NULL=14153, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7690a1c5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22758268=0, NULL=14167, NULL=14176, NULL=14165, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1485bf4b=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L42] int cleanupTimeShifts = 4; [L221] int pumpRunning = 0; [L222] int systemActive = 1; [L601] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L870] int waterLevel = 1; [L871] int methaneLevelCritical = 0; [L123] int retValue_acc ; [L124] int tmp ; [L861] int retValue_acc ; [L864] retValue_acc = 1 [L865] return (retValue_acc); [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L148] int splverifierCounter ; [L149] int tmp ; [L150] int tmp___0 ; [L151] int tmp___1 ; [L152] int tmp___2 ; [L155] splverifierCounter = 0 Loop: [L157] COND TRUE 1 [L159] COND TRUE splverifierCounter < 4 [L165] tmp = __VERIFIER_nondet_int() [L167] COND FALSE !(\read(tmp)) [L175] tmp___0 = __VERIFIER_nondet_int() [L177] COND FALSE !(\read(tmp___0)) [L185] tmp___2 = __VERIFIER_nondet_int() [L187] COND TRUE \read(tmp___2) [L229] COND FALSE !(\read(pumpRunning)) [L236] COND TRUE \read(systemActive) [L284] int tmp ; [L287] COND FALSE !(\read(pumpRunning)) [L258] int tmp ; [L261] COND TRUE ! pumpRunning [L398] int retValue_acc ; [L399] int tmp ; [L400] int tmp___0 ; [L950] int retValue_acc ; [L953] COND TRUE waterLevel < 2 [L954] retValue_acc = 1 [L955] return (retValue_acc); [L404] tmp = isHighWaterSensorDry() [L406] COND TRUE \read(tmp) [L407] tmp___0 = 0 [L411] retValue_acc = tmp___0 [L412] return (retValue_acc); [L263] tmp = isHighWaterLevel() [L265] COND FALSE !(\read(tmp)) [L801] int tmp ; [L802] int tmp___0 ; [L941] int retValue_acc ; [L944] retValue_acc = waterLevel [L945] return (retValue_acc); [L806] tmp = getWaterLevel() [L808] COND FALSE !(tmp == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:19:31,590 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...