./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product60.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_product60.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 d3ca886cbb93ac9ab3a93e98b7567227967813c9 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 16:05:57,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:05:57,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:05:57,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:05:57,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:05:57,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:05:57,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:05:57,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:05:57,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:05:57,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:05:57,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:05:57,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:05:57,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:05:57,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:05:57,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:05:57,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:05:57,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:05:57,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:05:57,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:05:57,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:05:57,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:05:57,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:05:57,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:05:57,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:05:57,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:05:57,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:05:57,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:05:57,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:05:57,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:05:57,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:05:57,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:05:57,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:05:57,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:05:57,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:05:57,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:05:57,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:05:57,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:05:57,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:05:57,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:05:57,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:05:57,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:05:57,171 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:05:57,204 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:05:57,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:05:57,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:05:57,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:05:57,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:05:57,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:05:57,207 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:05:57,207 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:05:57,208 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:05:57,208 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:05:57,212 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:05:57,213 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:05:57,213 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:05:57,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:05:57,213 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:05:57,213 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:05:57,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:05:57,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:05:57,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:05:57,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:05:57,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:05:57,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:05:57,215 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:05:57,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:05:57,215 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:05:57,215 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:05:57,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:05:57,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:05:57,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:05:57,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:05:57,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:05:57,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:05:57,217 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:05:57,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3ca886cbb93ac9ab3a93e98b7567227967813c9 [2021-08-27 16:05:57,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:05:57,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:05:57,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:05:57,532 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:05:57,533 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:05:57,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product60.cil.c [2021-08-27 16:05:57,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74078c259/57d830a973594c56ac467fc8c1c18462/FLAGa95daae18 [2021-08-27 16:05:58,104 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:05:58,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product60.cil.c [2021-08-27 16:05:58,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74078c259/57d830a973594c56ac467fc8c1c18462/FLAGa95daae18 [2021-08-27 16:05:58,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74078c259/57d830a973594c56ac467fc8c1c18462 [2021-08-27 16:05:58,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:05:58,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:05:58,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:05:58,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:05:58,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:05:58,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:05:58" (1/1) ... [2021-08-27 16:05:58,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c0212f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:58, skipping insertion in model container [2021-08-27 16:05:58,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:05:58" (1/1) ... [2021-08-27 16:05:58,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:05:58,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:05:58,619 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_product60.cil.c[2917,2930] [2021-08-27 16:05:58,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:05:58,771 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:05:58,804 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_product60.cil.c[2917,2930] [2021-08-27 16:05:58,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:05:58,855 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:05:58,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:58 WrapperNode [2021-08-27 16:05:58,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:05:58,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:05:58,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:05:58,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:05:58,862 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 16:05:58,876 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 16:05:58,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:05:58,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:05:58,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:05:58,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:05:58,925 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 16:05:58,925 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 16:05:58,930 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 16:05:58,938 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 16:05:58,948 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 16:05:58,955 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 16:05:58,958 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 16:05:58,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:05:58,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:05:58,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:05:58,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:05:58,964 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 16:05:58,969 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:05:58,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:05:58,996 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 16:05:59,005 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 16:05:59,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:05:59,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:05:59,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:05:59,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:05:59,880 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:05:59,880 INFO L299 CfgBuilder]: Removed 200 assume(true) statements. [2021-08-27 16:05:59,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:05:59 BoogieIcfgContainer [2021-08-27 16:05:59,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:05:59,883 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:05:59,883 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:05:59,886 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:05:59,887 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:05:59,887 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:05:58" (1/3) ... [2021-08-27 16:05:59,888 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1691e27b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:05:59, skipping insertion in model container [2021-08-27 16:05:59,888 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:05:59,889 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 16:05:59,889 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1691e27b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:05:59, skipping insertion in model container [2021-08-27 16:05:59,889 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:05:59,889 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:05:59" (3/3) ... [2021-08-27 16:05:59,890 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product60.cil.c [2021-08-27 16:05:59,923 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:05:59,923 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:05:59,923 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:05:59,923 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:05:59,924 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:05:59,924 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:05:59,924 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:05:59,924 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:05:59,938 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 16:05:59,969 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-08-27 16:05:59,969 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:59,969 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:59,978 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:59,978 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:59,978 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:05:59,981 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 16:05:59,996 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-08-27 16:05:59,997 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:59,997 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:59,998 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:59,998 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:00,002 INFO L791 eck$LassoCheckResult]: Stem: 126#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);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(75, #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(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(21);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(13);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(80, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(117, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(109, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(112, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(110, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 3 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(32, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 48#L-1true havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0; 36#L288true 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; 63#L296true main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 62#L252true assume 0 != main_~tmp~0; 76#L223true ~methAndRunningLastTime~0 := 0; 120#L986true havoc test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 105#L997-1true [2021-08-27 16:06:00,003 INFO L793 eck$LassoCheckResult]: Loop: 105#L997-1true assume !false; 117#L314true assume test_~splverifierCounter~0 < 4; 53#L315true test_~tmp~1 := test_#t~nondet19;havoc test_#t~nondet19; 5#L323true assume !(0 != test_~tmp~1); 101#L323-1true test_~tmp___0~0 := test_#t~nondet20;havoc test_#t~nondet20; 72#L333true assume !(0 != test_~tmp___0~0); 118#L333-1true test_~tmp___2~0 := test_#t~nondet21;havoc test_#t~nondet21; 102#L343true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 37#L351-1true assume !(0 != ~pumpRunning~0); 7#L749true assume !(0 != ~systemActive~0); 87#L756true havoc __utac_acc__Specification2_spec__2_#t~ret80, __utac_acc__Specification2_spec__2_#t~ret81, __utac_acc__Specification2_spec__2_~tmp~10, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~10;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 110#L93-2true __utac_acc__Specification2_spec__2_#t~ret80 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~10 := __utac_acc__Specification2_spec__2_#t~ret80;havoc __utac_acc__Specification2_spec__2_#t~ret80; 90#L997true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~10);~methAndRunningLastTime~0 := 0; 105#L997-1true [2021-08-27 16:06:00,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:00,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:06:00,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:00,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118157417] [2021-08-27 16:06:00,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:00,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:00,269 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:00,403 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:00,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:00,406 INFO L82 PathProgramCache]: Analyzing trace with hash 14728148, now seen corresponding path program 1 times [2021-08-27 16:06:00,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:00,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292320455] [2021-08-27 16:06:00,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:00,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:06:00,454 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 16:06:00,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:06:00,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292320455] [2021-08-27 16:06:00,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292320455] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:06:00,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:06:00,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:06:00,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661186829] [2021-08-27 16:06:00,460 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:06:00,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:06:00,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:06:00,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:06:00,471 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 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 16:06:00,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:06:00,541 INFO L93 Difference]: Finished difference Result 269 states and 391 transitions. [2021-08-27 16:06:00,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:06:00,543 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 269 states and 391 transitions. [2021-08-27 16:06:00,561 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 174 [2021-08-27 16:06:00,567 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 269 states to 255 states and 376 transitions. [2021-08-27 16:06:00,567 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 255 [2021-08-27 16:06:00,569 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 255 [2021-08-27 16:06:00,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 255 states and 376 transitions. [2021-08-27 16:06:00,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:06:00,571 INFO L681 BuchiCegarLoop]: Abstraction has 255 states and 376 transitions. [2021-08-27 16:06:00,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states and 376 transitions. [2021-08-27 16:06:00,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 253. [2021-08-27 16:06:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 253 states have (on average 1.4743083003952568) internal successors, (373), 252 states have internal predecessors, (373), 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 16:06:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 373 transitions. [2021-08-27 16:06:00,606 INFO L704 BuchiCegarLoop]: Abstraction has 253 states and 373 transitions. [2021-08-27 16:06:00,606 INFO L587 BuchiCegarLoop]: Abstraction has 253 states and 373 transitions. [2021-08-27 16:06:00,606 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:06:00,606 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 253 states and 373 transitions. [2021-08-27 16:06:00,609 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 172 [2021-08-27 16:06:00,609 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:00,609 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:00,610 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:00,610 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:00,610 INFO L791 eck$LassoCheckResult]: Stem: 561#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);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(75, #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(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(21);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(13);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(80, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(117, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(109, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(112, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(110, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 3 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(32, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 495#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0; 474#L288 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; 475#L296 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 512#L252 assume 0 != main_~tmp~0; 513#L223 ~methAndRunningLastTime~0 := 0; 527#L986 havoc test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 557#L997-1 [2021-08-27 16:06:00,611 INFO L793 eck$LassoCheckResult]: Loop: 557#L997-1 assume !false; 574#L314 assume test_~splverifierCounter~0 < 4; 573#L315 test_~tmp~1 := test_#t~nondet19;havoc test_#t~nondet19; 572#L323 assume !(0 != test_~tmp~1); 544#L323-1 test_~tmp___0~0 := test_#t~nondet20;havoc test_#t~nondet20; 523#L333 assume !(0 != test_~tmp___0~0); 435#L333-1 test_~tmp___2~0 := test_#t~nondet21;havoc test_#t~nondet21; 545#L343 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 476#L351-1 assume !(0 != ~pumpRunning~0); 422#L749 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret59, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 423#L807 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret58, processEnvironment__wrappee__highWaterSensor_~tmp~5;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5; 585#L781-1 assume !(0 == ~pumpRunning~0); 535#L756 havoc __utac_acc__Specification2_spec__2_#t~ret80, __utac_acc__Specification2_spec__2_#t~ret81, __utac_acc__Specification2_spec__2_~tmp~10, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~10;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 536#L93-2 __utac_acc__Specification2_spec__2_#t~ret80 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~10 := __utac_acc__Specification2_spec__2_#t~ret80;havoc __utac_acc__Specification2_spec__2_#t~ret80; 550#L997 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~10);~methAndRunningLastTime~0 := 0; 557#L997-1 [2021-08-27 16:06:00,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:00,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:06:00,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:00,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237403026] [2021-08-27 16:06:00,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:00,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:00,649 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:00,700 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:00,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:00,701 INFO L82 PathProgramCache]: Analyzing trace with hash -2011842179, now seen corresponding path program 1 times [2021-08-27 16:06:00,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:00,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194397632] [2021-08-27 16:06:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:00,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:06:00,721 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 16:06:00,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:06:00,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194397632] [2021-08-27 16:06:00,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194397632] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:06:00,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:06:00,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:06:00,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314398075] [2021-08-27 16:06:00,723 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:06:00,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:06:00,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:06:00,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:06:00,724 INFO L87 Difference]: Start difference. First operand 253 states and 373 transitions. cyclomatic complexity: 123 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 16:06:00,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:06:00,859 INFO L93 Difference]: Finished difference Result 342 states and 485 transitions. [2021-08-27 16:06:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:06:00,860 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 342 states and 485 transitions. [2021-08-27 16:06:00,863 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 239 [2021-08-27 16:06:00,865 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 342 states to 342 states and 485 transitions. [2021-08-27 16:06:00,866 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 342 [2021-08-27 16:06:00,866 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 342 [2021-08-27 16:06:00,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 485 transitions. [2021-08-27 16:06:00,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:06:00,868 INFO L681 BuchiCegarLoop]: Abstraction has 342 states and 485 transitions. [2021-08-27 16:06:00,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 485 transitions. [2021-08-27 16:06:00,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2021-08-27 16:06:00,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 342 states have (on average 1.4181286549707601) internal successors, (485), 341 states have internal predecessors, (485), 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 16:06:00,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 485 transitions. [2021-08-27 16:06:00,882 INFO L704 BuchiCegarLoop]: Abstraction has 342 states and 485 transitions. [2021-08-27 16:06:00,882 INFO L587 BuchiCegarLoop]: Abstraction has 342 states and 485 transitions. [2021-08-27 16:06:00,882 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:06:00,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 342 states and 485 transitions. [2021-08-27 16:06:00,884 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 239 [2021-08-27 16:06:00,884 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:00,884 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:00,885 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:00,885 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 16:06:00,886 INFO L791 eck$LassoCheckResult]: Stem: 1170#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);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(75, #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(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(21);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(13);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(80, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(117, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(109, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(112, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(110, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 3 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(32, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 1095#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0; 1075#L288 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; 1076#L296 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 1111#L252 assume 0 != main_~tmp~0; 1112#L223 ~methAndRunningLastTime~0 := 0; 1125#L986 havoc test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1165#L997-1 [2021-08-27 16:06:00,886 INFO L793 eck$LassoCheckResult]: Loop: 1165#L997-1 assume !false; 1204#L314 assume test_~splverifierCounter~0 < 4; 1199#L315 test_~tmp~1 := test_#t~nondet19;havoc test_#t~nondet19; 1200#L323 assume !(0 != test_~tmp~1); 1194#L323-1 test_~tmp___0~0 := test_#t~nondet20;havoc test_#t~nondet20; 1195#L333 assume !(0 != test_~tmp___0~0); 1186#L333-1 test_~tmp___2~0 := test_#t~nondet21;havoc test_#t~nondet21; 1187#L343 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1077#L351-1 assume !(0 != ~pumpRunning~0); 1023#L749 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret59, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 1024#L807 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret58, processEnvironment__wrappee__highWaterSensor_~tmp~5;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5; 1032#L781-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret78, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1046#L133-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1088#L138-1 isHighWaterLevel_#t~ret78 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret78;havoc isHighWaterLevel_#t~ret78; 1089#L927-3 assume !(0 != isHighWaterLevel_~tmp~8);isHighWaterLevel_~tmp___0~1 := 1; 1113#L927-5 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 1250#L933-1 processEnvironment__wrappee__highWaterSensor_#t~ret58 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~5 := processEnvironment__wrappee__highWaterSensor_#t~ret58;havoc processEnvironment__wrappee__highWaterSensor_#t~ret58; 1248#L785-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5); 1133#L756 havoc __utac_acc__Specification2_spec__2_#t~ret80, __utac_acc__Specification2_spec__2_#t~ret81, __utac_acc__Specification2_spec__2_~tmp~10, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~10;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 1210#L93-2 __utac_acc__Specification2_spec__2_#t~ret80 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~10 := __utac_acc__Specification2_spec__2_#t~ret80;havoc __utac_acc__Specification2_spec__2_#t~ret80; 1211#L997 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~10);~methAndRunningLastTime~0 := 0; 1165#L997-1 [2021-08-27 16:06:00,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:00,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:06:00,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:00,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824891023] [2021-08-27 16:06:00,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:00,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:00,926 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:00,961 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:00,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:00,962 INFO L82 PathProgramCache]: Analyzing trace with hash 235083, now seen corresponding path program 1 times [2021-08-27 16:06:00,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:00,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058874129] [2021-08-27 16:06:00,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:00,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:06:01,000 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 16:06:01,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:06:01,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058874129] [2021-08-27 16:06:01,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058874129] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:06:01,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:06:01,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:06:01,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575022826] [2021-08-27 16:06:01,002 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:06:01,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:06:01,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 16:06:01,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 16:06:01,003 INFO L87 Difference]: Start difference. First operand 342 states and 485 transitions. cyclomatic complexity: 146 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 16:06:01,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:06:01,085 INFO L93 Difference]: Finished difference Result 665 states and 927 transitions. [2021-08-27 16:06:01,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 16:06:01,086 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 665 states and 927 transitions. [2021-08-27 16:06:01,091 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 470 [2021-08-27 16:06:01,096 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 665 states to 665 states and 927 transitions. [2021-08-27 16:06:01,096 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 665 [2021-08-27 16:06:01,097 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 665 [2021-08-27 16:06:01,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 665 states and 927 transitions. [2021-08-27 16:06:01,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:06:01,103 INFO L681 BuchiCegarLoop]: Abstraction has 665 states and 927 transitions. [2021-08-27 16:06:01,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states and 927 transitions. [2021-08-27 16:06:01,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 366. [2021-08-27 16:06:01,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 366 states have (on average 1.3907103825136613) internal successors, (509), 365 states have internal predecessors, (509), 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 16:06:01,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 509 transitions. [2021-08-27 16:06:01,123 INFO L704 BuchiCegarLoop]: Abstraction has 366 states and 509 transitions. [2021-08-27 16:06:01,123 INFO L587 BuchiCegarLoop]: Abstraction has 366 states and 509 transitions. [2021-08-27 16:06:01,123 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:06:01,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 366 states and 509 transitions. [2021-08-27 16:06:01,126 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 255 [2021-08-27 16:06:01,126 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:01,126 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:01,127 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:01,127 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 16:06:01,127 INFO L791 eck$LassoCheckResult]: Stem: 2203#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);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(75, #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(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(21);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(13);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(80, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(117, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(109, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(112, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(110, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 3 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(32, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 2116#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0; 2094#L288 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; 2095#L296 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 2133#L252 assume 0 != main_~tmp~0; 2134#L223 ~methAndRunningLastTime~0 := 0; 2149#L986 havoc test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2182#L997-1 [2021-08-27 16:06:01,127 INFO L793 eck$LassoCheckResult]: Loop: 2182#L997-1 assume !false; 2183#L314 assume test_~splverifierCounter~0 < 4; 2223#L315 test_~tmp~1 := test_#t~nondet19;havoc test_#t~nondet19; 2220#L323 assume !(0 != test_~tmp~1); 2219#L323-1 test_~tmp___0~0 := test_#t~nondet20;havoc test_#t~nondet20; 2215#L333 assume !(0 != test_~tmp___0~0); 2214#L333-1 test_~tmp___2~0 := test_#t~nondet21;havoc test_#t~nondet21; 2208#L343 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2210#L351-1 assume !(0 != ~pumpRunning~0); 2040#L749 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret59, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 2041#L807 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret58, processEnvironment__wrappee__highWaterSensor_~tmp~5;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5; 2049#L781-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret78, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 2063#L133-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 2227#L138-1 isHighWaterLevel_#t~ret78 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret78;havoc isHighWaterLevel_#t~ret78; 2228#L927-3 assume !(0 != isHighWaterLevel_~tmp~8);isHighWaterLevel_~tmp___0~1 := 1; 2280#L927-5 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 2279#L933-1 processEnvironment__wrappee__highWaterSensor_#t~ret58 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~5 := processEnvironment__wrappee__highWaterSensor_#t~ret58;havoc processEnvironment__wrappee__highWaterSensor_#t~ret58; 2277#L785-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5); 2263#L756 havoc __utac_acc__Specification2_spec__2_#t~ret80, __utac_acc__Specification2_spec__2_#t~ret81, __utac_acc__Specification2_spec__2_~tmp~10, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~10;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 2236#L93-2 __utac_acc__Specification2_spec__2_#t~ret80 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~10 := __utac_acc__Specification2_spec__2_#t~ret80;havoc __utac_acc__Specification2_spec__2_#t~ret80; 2237#L997 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~10);~methAndRunningLastTime~0 := 0; 2182#L997-1 [2021-08-27 16:06:01,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:01,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:06:01,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:01,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624354248] [2021-08-27 16:06:01,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:01,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:01,157 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:01,199 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:01,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:01,200 INFO L82 PathProgramCache]: Analyzing trace with hash 680293453, now seen corresponding path program 1 times [2021-08-27 16:06:01,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:01,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489477711] [2021-08-27 16:06:01,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:01,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:06:01,232 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 16:06:01,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:06:01,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489477711] [2021-08-27 16:06:01,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489477711] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:06:01,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:06:01,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:06:01,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203816933] [2021-08-27 16:06:01,234 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:06:01,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:06:01,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:06:01,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:06:01,235 INFO L87 Difference]: Start difference. First operand 366 states and 509 transitions. cyclomatic complexity: 146 Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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 16:06:01,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:06:01,368 INFO L93 Difference]: Finished difference Result 1095 states and 1523 transitions. [2021-08-27 16:06:01,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:06:01,368 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1095 states and 1523 transitions. [2021-08-27 16:06:01,378 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 788 [2021-08-27 16:06:01,384 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1095 states to 1095 states and 1523 transitions. [2021-08-27 16:06:01,385 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1095 [2021-08-27 16:06:01,386 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1095 [2021-08-27 16:06:01,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1095 states and 1523 transitions. [2021-08-27 16:06:01,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:06:01,389 INFO L681 BuchiCegarLoop]: Abstraction has 1095 states and 1523 transitions. [2021-08-27 16:06:01,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states and 1523 transitions. [2021-08-27 16:06:01,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 402. [2021-08-27 16:06:01,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 402 states have (on average 1.355721393034826) internal successors, (545), 401 states have internal predecessors, (545), 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 16:06:01,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 545 transitions. [2021-08-27 16:06:01,420 INFO L704 BuchiCegarLoop]: Abstraction has 402 states and 545 transitions. [2021-08-27 16:06:01,420 INFO L587 BuchiCegarLoop]: Abstraction has 402 states and 545 transitions. [2021-08-27 16:06:01,420 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-27 16:06:01,428 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 402 states and 545 transitions. [2021-08-27 16:06:01,430 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 279 [2021-08-27 16:06:01,430 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:01,430 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:01,430 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:01,430 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 16:06:01,431 INFO L791 eck$LassoCheckResult]: Stem: 3703#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);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(75, #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(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(30);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(9);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(21);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(13);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(80, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(117, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(109, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(112, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(110, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 3 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(32, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 3593#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0; 3572#L288 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; 3573#L296 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 3615#L252 assume 0 != main_~tmp~0; 3616#L223 ~methAndRunningLastTime~0 := 0; 3633#L986 havoc test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3584#L997-1 [2021-08-27 16:06:01,431 INFO L793 eck$LassoCheckResult]: Loop: 3584#L997-1 assume !false; 3755#L314 assume test_~splverifierCounter~0 < 4; 3756#L315 test_~tmp~1 := test_#t~nondet19;havoc test_#t~nondet19; 3831#L323 assume !(0 != test_~tmp~1); 3829#L323-1 test_~tmp___0~0 := test_#t~nondet20;havoc test_#t~nondet20; 3828#L333 assume !(0 != test_~tmp___0~0); 3741#L333-1 test_~tmp___2~0 := test_#t~nondet21;havoc test_#t~nondet21; 3742#L343 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 3574#L351-1 assume !(0 != ~pumpRunning~0); 3575#L749 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret59, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 3824#L807 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret58, processEnvironment__wrappee__highWaterSensor_~tmp~5;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5; 3823#L781-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret78, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 3822#L133-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 3586#L138-1 isHighWaterLevel_#t~ret78 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret78;havoc isHighWaterLevel_#t~ret78; 3587#L927-3 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 3786#L927-5 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 3787#L933-1 processEnvironment__wrappee__highWaterSensor_#t~ret58 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~5 := processEnvironment__wrappee__highWaterSensor_#t~ret58;havoc processEnvironment__wrappee__highWaterSensor_#t~ret58; 3779#L785-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5); 3641#L756 havoc __utac_acc__Specification2_spec__2_#t~ret80, __utac_acc__Specification2_spec__2_#t~ret81, __utac_acc__Specification2_spec__2_~tmp~10, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~10;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 3682#L93-2 __utac_acc__Specification2_spec__2_#t~ret80 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~10 := __utac_acc__Specification2_spec__2_#t~ret80;havoc __utac_acc__Specification2_spec__2_#t~ret80; 3652#L997 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~10);~methAndRunningLastTime~0 := 0; 3584#L997-1 [2021-08-27 16:06:01,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:01,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 5 times [2021-08-27 16:06:01,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:01,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543209072] [2021-08-27 16:06:01,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:01,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:01,455 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:01,484 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:01,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:01,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1774772279, now seen corresponding path program 1 times [2021-08-27 16:06:01,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:01,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044928421] [2021-08-27 16:06:01,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:01,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:01,489 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:01,494 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:01,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:01,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1630653, now seen corresponding path program 1 times [2021-08-27 16:06:01,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:01,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232098911] [2021-08-27 16:06:01,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:01,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:01,537 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:01,594 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:42,846 WARN L207 SmtUtils]: Spent 40.97 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:07:25,286 WARN L207 SmtUtils]: Spent 20.55 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:07:25,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:07:25 BoogieIcfgContainer [2021-08-27 16:07:25,392 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:07:25,392 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:07:25,392 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:07:25,392 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:07:25,393 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:05:59" (3/4) ... [2021-08-27 16:07:25,395 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:07:25,428 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:07:25,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:07:25,430 INFO L168 Benchmark]: Toolchain (without parser) took 87000.09 ms. Allocated memory was 54.5 MB in the beginning and 132.1 MB in the end (delta: 77.6 MB). Free memory was 30.6 MB in the beginning and 75.1 MB in the end (delta: -44.6 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:25,430 INFO L168 Benchmark]: CDTParser took 2.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 36.5 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:07:25,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.52 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.4 MB in the beginning and 43.2 MB in the end (delta: -12.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:25,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.87 ms. Allocated memory is still 67.1 MB. Free memory was 43.0 MB in the beginning and 39.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:25,431 INFO L168 Benchmark]: Boogie Preprocessor took 46.63 ms. Allocated memory is still 67.1 MB. Free memory was 39.0 MB in the beginning and 36.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:25,431 INFO L168 Benchmark]: RCFGBuilder took 919.38 ms. Allocated memory is still 67.1 MB. Free memory was 36.1 MB in the beginning and 43.1 MB in the end (delta: -7.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:25,432 INFO L168 Benchmark]: BuchiAutomizer took 85508.52 ms. Allocated memory was 67.1 MB in the beginning and 132.1 MB in the end (delta: 65.0 MB). Free memory was 43.1 MB in the beginning and 78.3 MB in the end (delta: -35.1 MB). Peak memory consumption was 87.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:25,432 INFO L168 Benchmark]: Witness Printer took 36.72 ms. Allocated memory is still 132.1 MB. Free memory was 78.3 MB in the beginning and 75.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:25,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 36.5 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 424.52 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.4 MB in the beginning and 43.2 MB in the end (delta: -12.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.87 ms. Allocated memory is still 67.1 MB. Free memory was 43.0 MB in the beginning and 39.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.63 ms. Allocated memory is still 67.1 MB. Free memory was 39.0 MB in the beginning and 36.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 919.38 ms. Allocated memory is still 67.1 MB. Free memory was 36.1 MB in the beginning and 43.1 MB in the end (delta: -7.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 85508.52 ms. Allocated memory was 67.1 MB in the beginning and 132.1 MB in the end (delta: 65.0 MB). Free memory was 43.1 MB in the beginning and 78.3 MB in the end (delta: -35.1 MB). Peak memory consumption was 87.1 MB. Max. memory is 16.1 GB. * Witness Printer took 36.72 ms. Allocated memory is still 132.1 MB. Free memory was 78.3 MB in the beginning and 75.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 402 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 85.4s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 84.7s. Construction of modules took 0.2s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 86.8ms AutomataMinimizationTime, 4 MinimizatonAttempts, 994 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 402 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 983 SDtfs, 1228 SDslu, 1295 SDs, 0 SdLazy, 198 SolverSat, 67 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 222.4ms Time LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 313]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=23017} State at position 1 is {NULL=0, NULL=23040, NULL=23025, NULL=0, NULL=0, NULL=23017, NULL=23039, NULL=23030, NULL=0, NULL=0, NULL=0, NULL=23031, methaneLevelCritical=0, NULL=0, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6cfc01b0=0, NULL=0, cleanupTimeShifts=4, tmp=0, NULL=23043, NULL=23035, NULL=23033, waterLevel=1, NULL=0, NULL=23045, tmp___0=0, \result=1, head=0, pumpRunning=0, tmp=1, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@17fb2a6a=0, \result=1, NULL=0, retValue_acc=0, NULL=0, NULL=23021, NULL=0, tmp=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e00d871=0, methAndRunningLastTime=0, NULL=23036, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@210e7ef9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4bb6d688=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1a9bcdb9=81, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@680dfdc9=0, tmp=0, NULL=23037, retValue_acc=0, tmp=0, retValue_acc=0, NULL=0, NULL=23022, NULL=0, NULL=23038, tmp___0=0, NULL=0, NULL=0, NULL=23041, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ef996d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4efd9dec=0, NULL=23034, tmp=0, NULL=23027, NULL=0, systemActive=1, NULL=23044, NULL=0, NULL=23018, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=23019, \result=0, NULL=23028, NULL=0, NULL=0, retValue_acc=1, NULL=23029, NULL=23023, tmp___0=0, tmp___2=81, splverifierCounter=0, NULL=0, \result=0, NULL=23024, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a652554=0, NULL=23042, NULL=23026, NULL=23020, NULL=23032} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int waterLevel = 1; [L51] int methaneLevelCritical = 0; [L162] int cleanupTimeShifts = 4; [L541] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L741] int pumpRunning = 0; [L742] int systemActive = 1; [L980] int methAndRunningLastTime ; [L243] int retValue_acc ; [L244] int tmp ; [L292] int retValue_acc ; [L295] retValue_acc = 1 [L296] return (retValue_acc); [L250] tmp = valid_product() [L252] COND TRUE \read(tmp) [L985] methAndRunningLastTime = 0 [L304] int splverifierCounter ; [L305] int tmp ; [L306] int tmp___0 ; [L307] int tmp___1 ; [L308] int tmp___2 ; [L311] splverifierCounter = 0 Loop: [L313] COND TRUE 1 [L315] COND TRUE splverifierCounter < 4 [L321] tmp = __VERIFIER_nondet_int() [L323] COND FALSE !(\read(tmp)) [L331] tmp___0 = __VERIFIER_nondet_int() [L333] COND FALSE !(\read(tmp___0)) [L341] tmp___2 = __VERIFIER_nondet_int() [L343] COND TRUE \read(tmp___2) [L975] systemActive = 1 [L749] COND FALSE !(\read(pumpRunning)) [L756] COND TRUE \read(systemActive) [L804] int tmp ; [L807] COND FALSE !(\read(pumpRunning)) [L778] int tmp ; [L781] COND TRUE ! pumpRunning [L919] int retValue_acc ; [L920] int tmp ; [L921] int tmp___0 ; [L130] int retValue_acc ; [L133] COND TRUE waterLevel < 2 [L134] retValue_acc = 1 [L135] return (retValue_acc); [L925] tmp = isHighWaterSensorDry() [L927] COND TRUE \read(tmp) [L928] tmp___0 = 0 [L932] retValue_acc = tmp___0 [L933] return (retValue_acc); [L783] tmp = isHighWaterLevel() [L785] COND FALSE !(\read(tmp)) [L990] int tmp ; [L991] int tmp___0 ; [L89] int retValue_acc ; [L92] retValue_acc = methaneLevelCritical [L93] return (retValue_acc); [L995] tmp = isMethaneLevelCritical() [L997] COND FALSE !(\read(tmp)) [L1013] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:07:25,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...