./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product59.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_spec2_product59.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 3fa33aaad762eafbf16a24d8c461c30e65889576 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Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:05:56,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:05:56,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:05:56,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:05:56,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:05:56,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:05:56,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:05:56,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:05:56,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:05:56,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:05:56,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:05:56,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:05:56,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:05:56,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:05:56,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:05:56,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:05:56,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:05:56,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:05:56,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:05:56,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:05:56,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:05:56,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:05:56,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:05:56,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:05:56,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:05:56,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:05:56,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:05:56,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:05:56,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:05:56,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:05:56,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:05:56,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:05:56,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:05:56,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:05:56,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:05:56,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:05:56,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:05:56,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:05:56,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:05:56,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:05:56,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:05:56,692 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:05:56,720 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:05:56,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:05:56,721 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:05:56,721 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:05:56,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:05:56,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:05:56,723 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:05:56,723 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:05:56,723 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:05:56,723 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:05:56,724 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:05:56,724 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:05:56,724 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:05:56,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:05:56,724 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:05:56,725 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:05:56,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:05:56,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:05:56,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:05:56,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:05:56,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:05:56,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:05:56,735 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:05:56,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:05:56,736 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:05:56,736 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:05:56,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:05:56,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:05:56,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:05:56,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:05:56,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:05:56,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:05:56,738 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:05:56,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fa33aaad762eafbf16a24d8c461c30e65889576 [2021-08-27 16:05:56,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:05:56,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:05:56,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:05:56,995 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:05:56,995 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:05:56,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c [2021-08-27 16:05:57,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76fd30968/7cdf8d0b03794f5e8fb65fa132f62875/FLAG8a1d28031 [2021-08-27 16:05:57,352 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:05:57,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c [2021-08-27 16:05:57,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76fd30968/7cdf8d0b03794f5e8fb65fa132f62875/FLAG8a1d28031 [2021-08-27 16:05:57,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76fd30968/7cdf8d0b03794f5e8fb65fa132f62875 [2021-08-27 16:05:57,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:05:57,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:05:57,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:05:57,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:05:57,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:05:57,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:05:57" (1/1) ... [2021-08-27 16:05:57,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34161956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:57, skipping insertion in model container [2021-08-27 16:05:57,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:05:57" (1/1) ... [2021-08-27 16:05:57,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:05:57,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:05:57,914 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_spec2_product59.cil.c[1281,1294] [2021-08-27 16:05:57,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:05:58,001 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:05:58,020 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_spec2_product59.cil.c[1281,1294] [2021-08-27 16:05:58,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:05:58,081 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:05:58,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:58 WrapperNode [2021-08-27 16:05:58,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:05:58,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:05:58,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:05:58,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:05:58,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:58" (1/1) ... [2021-08-27 16:05:58,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:58" (1/1) ... [2021-08-27 16:05:58,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:05:58,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:05:58,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:05:58,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:05:58,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:58" (1/1) ... [2021-08-27 16:05:58,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:58" (1/1) ... [2021-08-27 16:05:58,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:58" (1/1) ... [2021-08-27 16:05:58,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:58" (1/1) ... [2021-08-27 16:05:58,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:58" (1/1) ... [2021-08-27 16:05:58,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:58" (1/1) ... [2021-08-27 16:05:58,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:58" (1/1) ... [2021-08-27 16:05:58,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:05:58,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:05:58,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:05:58,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:05:58,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:58" (1/1) ... [2021-08-27 16:05:58,155 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:05:58,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:05:58,167 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 16:05:58,187 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 16:05:58,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:05:58,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:05:58,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:05:58,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:05:58,786 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:05:58,786 INFO L299 CfgBuilder]: Removed 198 assume(true) statements. [2021-08-27 16:05:58,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:05:58 BoogieIcfgContainer [2021-08-27 16:05:58,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:05:58,789 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:05:58,789 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:05:58,792 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:05:58,793 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:05:58,793 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:05:57" (1/3) ... [2021-08-27 16:05:58,794 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@11b8fe99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:05:58, skipping insertion in model container [2021-08-27 16:05:58,794 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:05:58,794 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:58" (2/3) ... [2021-08-27 16:05:58,794 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@11b8fe99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:05:58, skipping insertion in model container [2021-08-27 16:05:58,794 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:05:58,795 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:05:58" (3/3) ... [2021-08-27 16:05:58,795 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product59.cil.c [2021-08-27 16:05:58,828 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:05:58,829 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:05:58,829 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:05:58,829 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:05:58,829 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:05:58,829 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:05:58,829 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:05:58,829 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:05:58,846 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 138 states, 137 states have (on average 1.5182481751824817) internal successors, (208), 137 states have internal predecessors, (208), 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 16:05:58,875 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-08-27 16:05:58,875 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:58,875 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:58,881 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:58,881 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:58,881 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:05:58,883 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 138 states, 137 states have (on average 1.5182481751824817) internal successors, (208), 137 states have internal predecessors, (208), 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 16:05:58,902 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-08-27 16:05:58,903 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:58,903 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:58,904 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:58,904 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:58,912 INFO L791 eck$LassoCheckResult]: Stem: 123#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 51#L-1true havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 37#L524true havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 64#L532true main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 75#L488true assume 0 != main_~tmp~7; 4#L461true ~methAndRunningLastTime~0 := 0; 47#L369true havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 10#L380-1true [2021-08-27 16:05:58,913 INFO L793 eck$LassoCheckResult]: Loop: 10#L380-1true assume !false; 84#L307true assume test_~splverifierCounter~0 < 4; 18#L308true test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 119#L316true assume !(0 != test_~tmp~5); 89#L316-1true test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 41#L326true assume !(0 != test_~tmp___0~2); 33#L326-1true test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 86#L336true assume 0 != test_~tmp___2~0; 13#L342-1true assume !(0 != ~pumpRunning~0); 77#L70true assume !(0 != ~systemActive~0); 83#L77true havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 110#L947-2true __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 81#L380true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 10#L380-1true [2021-08-27 16:05:58,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:58,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:05:58,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:58,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620743472] [2021-08-27 16:05:58,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:58,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:59,119 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:59,239 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:59,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:59,243 INFO L82 PathProgramCache]: Analyzing trace with hash 13773843, now seen corresponding path program 1 times [2021-08-27 16:05:59,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:59,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045036511] [2021-08-27 16:05:59,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:59,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:59,251 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:59,270 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:59,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:59,272 INFO L82 PathProgramCache]: Analyzing trace with hash 847070349, now seen corresponding path program 1 times [2021-08-27 16:05:59,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:59,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371580911] [2021-08-27 16:05:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:59,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:05:59,395 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 16:05:59,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:05:59,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371580911] [2021-08-27 16:05:59,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371580911] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:05:59,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:05:59,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:05:59,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612623179] [2021-08-27 16:05:59,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:05:59,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:05:59,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:05:59,523 INFO L87 Difference]: Start difference. First operand has 138 states, 137 states have (on average 1.5182481751824817) internal successors, (208), 137 states have internal predecessors, (208), 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 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 16:05:59,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:05:59,685 INFO L93 Difference]: Finished difference Result 322 states and 463 transitions. [2021-08-27 16:05:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:05:59,687 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 322 states and 463 transitions. [2021-08-27 16:05:59,695 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 207 [2021-08-27 16:05:59,703 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 322 states to 301 states and 442 transitions. [2021-08-27 16:05:59,704 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 301 [2021-08-27 16:05:59,705 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 301 [2021-08-27 16:05:59,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 301 states and 442 transitions. [2021-08-27 16:05:59,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:05:59,710 INFO L681 BuchiCegarLoop]: Abstraction has 301 states and 442 transitions. [2021-08-27 16:05:59,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states and 442 transitions. [2021-08-27 16:05:59,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 175. [2021-08-27 16:05:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 175 states have (on average 1.4628571428571429) internal successors, (256), 174 states have internal predecessors, (256), 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 16:05:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 256 transitions. [2021-08-27 16:05:59,736 INFO L704 BuchiCegarLoop]: Abstraction has 175 states and 256 transitions. [2021-08-27 16:05:59,736 INFO L587 BuchiCegarLoop]: Abstraction has 175 states and 256 transitions. [2021-08-27 16:05:59,736 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:05:59,736 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 175 states and 256 transitions. [2021-08-27 16:05:59,737 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 120 [2021-08-27 16:05:59,737 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:59,737 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:59,737 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:59,738 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:59,738 INFO L791 eck$LassoCheckResult]: Stem: 607#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 557#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 535#L524 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 536#L532 main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 575#L488 assume 0 != main_~tmp~7; 478#L461 ~methAndRunningLastTime~0 := 0; 479#L369 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 493#L380-1 [2021-08-27 16:05:59,738 INFO L793 eck$LassoCheckResult]: Loop: 493#L380-1 assume !false; 494#L307 assume test_~splverifierCounter~0 < 4; 506#L308 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 507#L316 assume !(0 != test_~tmp~5); 595#L316-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 542#L326 assume !(0 != test_~tmp___0~2); 529#L326-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 530#L336 assume 0 != test_~tmp___2~0; 499#L342-1 assume !(0 != ~pumpRunning~0); 501#L70 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 573#L128 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 524#L102-1 assume !(0 == ~pumpRunning~0); 509#L77 havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 593#L947-2 __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 591#L380 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 493#L380-1 [2021-08-27 16:05:59,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:59,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:05:59,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:59,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823038539] [2021-08-27 16:05:59,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:59,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:59,759 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:59,785 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:59,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:59,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1366037980, now seen corresponding path program 1 times [2021-08-27 16:05:59,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:59,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402420261] [2021-08-27 16:05:59,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:59,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:05:59,796 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 16:05:59,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:05:59,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402420261] [2021-08-27 16:05:59,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402420261] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:05:59,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:05:59,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:05:59,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730973955] [2021-08-27 16:05:59,798 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:05:59,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:05:59,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:05:59,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:05:59,799 INFO L87 Difference]: Start difference. First operand 175 states and 256 transitions. cyclomatic complexity: 84 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 16:05:59,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:05:59,848 INFO L93 Difference]: Finished difference Result 217 states and 302 transitions. [2021-08-27 16:05:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:05:59,849 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 217 states and 302 transitions. [2021-08-27 16:05:59,850 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2021-08-27 16:05:59,851 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 217 states to 217 states and 302 transitions. [2021-08-27 16:05:59,851 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 217 [2021-08-27 16:05:59,852 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 217 [2021-08-27 16:05:59,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 217 states and 302 transitions. [2021-08-27 16:05:59,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:05:59,852 INFO L681 BuchiCegarLoop]: Abstraction has 217 states and 302 transitions. [2021-08-27 16:05:59,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states and 302 transitions. [2021-08-27 16:05:59,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-08-27 16:05:59,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 217 states have (on average 1.391705069124424) internal successors, (302), 216 states have internal predecessors, (302), 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 16:05:59,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 302 transitions. [2021-08-27 16:05:59,858 INFO L704 BuchiCegarLoop]: Abstraction has 217 states and 302 transitions. [2021-08-27 16:05:59,858 INFO L587 BuchiCegarLoop]: Abstraction has 217 states and 302 transitions. [2021-08-27 16:05:59,858 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:05:59,859 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 217 states and 302 transitions. [2021-08-27 16:05:59,859 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2021-08-27 16:05:59,866 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:59,866 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:59,867 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:59,867 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 16:05:59,867 INFO L791 eck$LassoCheckResult]: Stem: 1016#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 958#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 936#L524 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 937#L532 main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 976#L488 assume 0 != main_~tmp~7; 876#L461 ~methAndRunningLastTime~0 := 0; 877#L369 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 952#L380-1 [2021-08-27 16:05:59,867 INFO L793 eck$LassoCheckResult]: Loop: 952#L380-1 assume !false; 1077#L307 assume test_~splverifierCounter~0 < 4; 1078#L308 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 1092#L316 assume !(0 != test_~tmp~5); 1090#L316-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 1089#L326 assume !(0 != test_~tmp___0~2); 1087#L326-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 1085#L336 assume 0 != test_~tmp___2~0; 1084#L342-1 assume !(0 != ~pumpRunning~0); 988#L70 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 975#L128 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 925#L102-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 926#L987-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 1019#L992-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 919#L248-3 assume !(0 != isHighWaterLevel_~tmp~3);isHighWaterLevel_~tmp___0~0 := 1; 920#L248-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 899#L254-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 900#L106-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 906#L77 havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 1083#L947-2 __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 1081#L380 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 952#L380-1 [2021-08-27 16:05:59,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:59,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:05:59,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:59,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022367903] [2021-08-27 16:05:59,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:59,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:59,886 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:59,909 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:59,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:59,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1305577226, now seen corresponding path program 1 times [2021-08-27 16:05:59,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:59,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222303158] [2021-08-27 16:05:59,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:59,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:05:59,925 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 16:05:59,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:05:59,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222303158] [2021-08-27 16:05:59,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222303158] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:05:59,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:05:59,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:05:59,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961999454] [2021-08-27 16:05:59,926 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:05:59,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:05:59,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 16:05:59,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 16:05:59,927 INFO L87 Difference]: Start difference. First operand 217 states and 302 transitions. cyclomatic complexity: 88 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 16:05:59,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:05:59,981 INFO L93 Difference]: Finished difference Result 421 states and 579 transitions. [2021-08-27 16:05:59,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 16:05:59,981 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 421 states and 579 transitions. [2021-08-27 16:05:59,984 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 300 [2021-08-27 16:05:59,985 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 421 states to 421 states and 579 transitions. [2021-08-27 16:05:59,985 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 421 [2021-08-27 16:05:59,986 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 421 [2021-08-27 16:05:59,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 421 states and 579 transitions. [2021-08-27 16:05:59,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:05:59,986 INFO L681 BuchiCegarLoop]: Abstraction has 421 states and 579 transitions. [2021-08-27 16:05:59,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states and 579 transitions. [2021-08-27 16:05:59,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 229. [2021-08-27 16:05:59,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 229 states have (on average 1.3711790393013101) internal successors, (314), 228 states have internal predecessors, (314), 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 16:05:59,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 314 transitions. [2021-08-27 16:05:59,992 INFO L704 BuchiCegarLoop]: Abstraction has 229 states and 314 transitions. [2021-08-27 16:05:59,992 INFO L587 BuchiCegarLoop]: Abstraction has 229 states and 314 transitions. [2021-08-27 16:05:59,992 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:05:59,992 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 229 states and 314 transitions. [2021-08-27 16:05:59,993 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 160 [2021-08-27 16:05:59,993 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:59,993 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:59,993 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:59,993 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 16:05:59,994 INFO L791 eck$LassoCheckResult]: Stem: 1668#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1608#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 1585#L524 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 1586#L532 main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 1627#L488 assume 0 != main_~tmp~7; 1524#L461 ~methAndRunningLastTime~0 := 0; 1525#L369 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1539#L380-1 [2021-08-27 16:05:59,994 INFO L793 eck$LassoCheckResult]: Loop: 1539#L380-1 assume !false; 1540#L307 assume test_~splverifierCounter~0 < 4; 1551#L308 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 1552#L316 assume !(0 != test_~tmp~5); 1650#L316-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 1591#L326 assume !(0 != test_~tmp___0~2); 1593#L326-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 1746#L336 assume 0 != test_~tmp___2~0; 1545#L342-1 assume !(0 != ~pumpRunning~0); 1546#L70 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 1626#L128 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1574#L102-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 1575#L987-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 1671#L992-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 1568#L248-3 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~0 := 0; 1569#L248-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1547#L254-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 1548#L106-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1554#L77 havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 1646#L947-2 __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 1644#L380 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 1539#L380-1 [2021-08-27 16:05:59,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:59,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:05:59,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:59,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086286330] [2021-08-27 16:05:59,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:59,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:00,027 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:00,045 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:00,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:00,046 INFO L82 PathProgramCache]: Analyzing trace with hash -469430136, now seen corresponding path program 1 times [2021-08-27 16:06:00,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:00,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233854763] [2021-08-27 16:06:00,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:00,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:00,049 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:00,052 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:00,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:00,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1303711490, now seen corresponding path program 1 times [2021-08-27 16:06:00,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:00,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222144111] [2021-08-27 16:06:00,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:00,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:00,068 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:00,090 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:39,335 WARN L207 SmtUtils]: Spent 39.05 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:07:18,206 WARN L207 SmtUtils]: Spent 19.48 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:07:18,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:07:18 BoogieIcfgContainer [2021-08-27 16:07:18,331 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:07:18,332 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:07:18,332 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:07:18,332 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:07:18,332 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:05:58" (3/4) ... [2021-08-27 16:07:18,346 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:07:18,404 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:07:18,410 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:07:18,410 INFO L168 Benchmark]: Toolchain (without parser) took 80644.55 ms. Allocated memory was 58.7 MB in the beginning and 123.7 MB in the end (delta: 65.0 MB). Free memory was 38.7 MB in the beginning and 69.7 MB in the end (delta: -30.9 MB). Peak memory consumption was 36.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:18,411 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 58.7 MB. Free memory is still 40.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:07:18,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.92 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 38.5 MB in the beginning and 58.1 MB in the end (delta: -19.6 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:18,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.83 ms. Allocated memory is still 81.8 MB. Free memory was 58.1 MB in the beginning and 54.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:18,413 INFO L168 Benchmark]: Boogie Preprocessor took 23.86 ms. Allocated memory is still 81.8 MB. Free memory was 54.3 MB in the beginning and 51.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:18,414 INFO L168 Benchmark]: RCFGBuilder took 638.42 ms. Allocated memory is still 81.8 MB. Free memory was 51.2 MB in the beginning and 39.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:18,414 INFO L168 Benchmark]: BuchiAutomizer took 79542.26 ms. Allocated memory was 81.8 MB in the beginning and 123.7 MB in the end (delta: 41.9 MB). Free memory was 39.3 MB in the beginning and 71.8 MB in the end (delta: -32.4 MB). Peak memory consumption was 63.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:18,415 INFO L168 Benchmark]: Witness Printer took 77.93 ms. Allocated memory is still 123.7 MB. Free memory was 71.8 MB in the beginning and 69.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:18,416 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 58.7 MB. Free memory is still 40.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.92 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 38.5 MB in the beginning and 58.1 MB in the end (delta: -19.6 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.83 ms. Allocated memory is still 81.8 MB. Free memory was 58.1 MB in the beginning and 54.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.86 ms. Allocated memory is still 81.8 MB. Free memory was 54.3 MB in the beginning and 51.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 638.42 ms. Allocated memory is still 81.8 MB. Free memory was 51.2 MB in the beginning and 39.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 79542.26 ms. Allocated memory was 81.8 MB in the beginning and 123.7 MB in the end (delta: 41.9 MB). Free memory was 39.3 MB in the beginning and 71.8 MB in the end (delta: -32.4 MB). Peak memory consumption was 63.6 MB. Max. memory is 16.1 GB. * Witness Printer took 77.93 ms. Allocated memory is still 123.7 MB. Free memory was 71.8 MB in the beginning and 69.7 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 229 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 79.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 79.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 27.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 318 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 229 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 599 SDtfs, 1209 SDslu, 1240 SDs, 0 SdLazy, 131 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 152.2ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 306]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=0, NULL=37644, NULL=1, NULL=0, NULL=37628, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@126b5640=0, NULL=0, NULL=37646, methaneLevelCritical=0, tmp=0, NULL=0, retValue_acc=0, NULL=37620, NULL=0, tmp___1=0, NULL=0, NULL=37623, cleanupTimeShifts=4, retValue_acc=0, NULL=37636, waterLevel=1, NULL=37638, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@47baa136=0, NULL=37643, \result=1, head=0, pumpRunning=0, NULL=37637, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@62982590=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3f0fa524=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6cb150bc=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@514f3029=64, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f018f62=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3aae28c2=0, NULL=0, tmp=1, NULL=0, NULL=37627, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1e281dee=0, NULL=0, tmp___0=0, NULL=37630, methAndRunningLastTime=0, NULL=37645, NULL=37642, tmp=0, head=0, NULL=0, NULL=37641, retValue_acc=0, NULL=37639, tmp___0=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4bc080ce=0, NULL=0, tmp=0, NULL=0, systemActive=1, NULL=37640, NULL=0, NULL=37626, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=37647, NULL=37624, \result=0, NULL=21710, NULL=0, NULL=0, retValue_acc=1, NULL=37619, NULL=37629, NULL=37622, NULL=37632, tmp___0=0, retValue_acc=1, tmp___2=64, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=37625, NULL=37621, NULL=0, NULL=0, NULL=37631, NULL=0, NULL=37618, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L62] int pumpRunning = 0; [L63] int systemActive = 1; [L363] int methAndRunningLastTime ; [L402] int cleanupTimeShifts = 4; [L706] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L904] int waterLevel = 1; [L905] int methaneLevelCritical = 0; [L479] int retValue_acc ; [L480] int tmp ; [L528] int retValue_acc ; [L531] retValue_acc = 1 [L532] return (retValue_acc); [L486] tmp = valid_product() [L488] COND TRUE \read(tmp) [L368] methAndRunningLastTime = 0 [L297] int splverifierCounter ; [L298] int tmp ; [L299] int tmp___0 ; [L300] int tmp___1 ; [L301] int tmp___2 ; [L304] splverifierCounter = 0 Loop: [L306] COND TRUE 1 [L308] COND TRUE splverifierCounter < 4 [L314] tmp = __VERIFIER_nondet_int() [L316] COND FALSE !(\read(tmp)) [L324] tmp___0 = __VERIFIER_nondet_int() [L326] COND FALSE !(\read(tmp___0)) [L334] tmp___2 = __VERIFIER_nondet_int() [L336] COND TRUE \read(tmp___2) [L70] COND FALSE !(\read(pumpRunning)) [L77] COND TRUE \read(systemActive) [L125] int tmp ; [L128] COND FALSE !(\read(pumpRunning)) [L99] int tmp ; [L102] COND TRUE ! pumpRunning [L240] int retValue_acc ; [L241] int tmp ; [L242] int tmp___0 ; [L984] int retValue_acc ; [L987] COND TRUE waterLevel < 2 [L988] retValue_acc = 1 [L989] return (retValue_acc); [L246] tmp = isHighWaterSensorDry() [L248] COND TRUE \read(tmp) [L249] tmp___0 = 0 [L253] retValue_acc = tmp___0 [L254] return (retValue_acc); [L104] tmp = isHighWaterLevel() [L106] COND FALSE !(\read(tmp)) [L373] int tmp ; [L374] int tmp___0 ; [L943] int retValue_acc ; [L946] retValue_acc = methaneLevelCritical [L947] return (retValue_acc); [L378] tmp = isMethaneLevelCritical() [L380] COND FALSE !(\read(tmp)) [L396] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:07:18,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...