./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product64.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_product64.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 e54df5218807ebc1aaf13f5cda92067864bfb3d3 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:06:28,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:06:28,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:06:28,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:06:28,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:06:28,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:06:28,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:06:28,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:06:28,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:06:28,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:06:28,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:06:28,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:06:28,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:06:28,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:06:28,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:06:28,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:06:28,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:06:28,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:06:28,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:06:28,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:06:28,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:06:28,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:06:28,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:06:28,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:06:28,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:06:28,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:06:28,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:06:28,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:06:28,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:06:28,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:06:28,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:06:28,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:06:28,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:06:28,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:06:28,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:06:28,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:06:28,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:06:28,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:06:28,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:06:28,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:06:28,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:06:28,925 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:06:28,961 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:06:28,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:06:28,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:06:28,963 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:06:28,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:06:28,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:06:28,965 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:06:28,965 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:06:28,966 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:06:28,966 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:06:28,966 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:06:28,967 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:06:28,967 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:06:28,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:06:28,967 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:06:28,968 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:06:28,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:06:28,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:06:28,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:06:28,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:06:28,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:06:28,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:06:28,969 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:06:28,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:06:28,969 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:06:28,969 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:06:28,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:06:28,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:06:28,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:06:28,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:06:28,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:06:28,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:06:28,971 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:06:28,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e54df5218807ebc1aaf13f5cda92067864bfb3d3 [2021-08-27 16:06:29,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:06:29,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:06:29,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:06:29,320 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:06:29,321 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:06:29,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product64.cil.c [2021-08-27 16:06:29,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe4fb218/f53900439add4338bbcf9fa638197b58/FLAG05d8847a0 [2021-08-27 16:06:29,889 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:06:29,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product64.cil.c [2021-08-27 16:06:29,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe4fb218/f53900439add4338bbcf9fa638197b58/FLAG05d8847a0 [2021-08-27 16:06:30,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe4fb218/f53900439add4338bbcf9fa638197b58 [2021-08-27 16:06:30,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:06:30,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:06:30,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:06:30,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:06:30,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:06:30,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:06:30" (1/1) ... [2021-08-27 16:06:30,412 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 04:06:30, skipping insertion in model container [2021-08-27 16:06:30,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:06:30" (1/1) ... [2021-08-27 16:06:30,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:06:30,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:06:30,648 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_product64.cil.c[6499,6512] [2021-08-27 16:06:30,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:06:30,714 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:06:30,751 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_product64.cil.c[6499,6512] [2021-08-27 16:06:30,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:06:30,834 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:06:30,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:30 WrapperNode [2021-08-27 16:06:30,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:06:30,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:06:30,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:06:30,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:06:30,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:30" (1/1) ... [2021-08-27 16:06:30,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:30" (1/1) ... [2021-08-27 16:06:30,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:06:30,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:06:30,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:06:30,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:06:30,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:30" (1/1) ... [2021-08-27 16:06:30,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:30" (1/1) ... [2021-08-27 16:06:30,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:30" (1/1) ... [2021-08-27 16:06:30,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:30" (1/1) ... [2021-08-27 16:06:30,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:30" (1/1) ... [2021-08-27 16:06:31,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:30" (1/1) ... [2021-08-27 16:06:31,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:30" (1/1) ... [2021-08-27 16:06:31,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:06:31,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:06:31,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:06:31,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:06:31,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:30" (1/1) ... [2021-08-27 16:06:31,055 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:06:31,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:06:31,078 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 16:06:31,104 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 16:06:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:06:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:06:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:06:31,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:06:32,248 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:06:32,248 INFO L299 CfgBuilder]: Removed 356 assume(true) statements. [2021-08-27 16:06:32,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:06:32 BoogieIcfgContainer [2021-08-27 16:06:32,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:06:32,252 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:06:32,252 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:06:32,255 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:06:32,255 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:06:32,256 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:06:30" (1/3) ... [2021-08-27 16:06:32,256 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e52776c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:06:32, skipping insertion in model container [2021-08-27 16:06:32,257 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:06:32,257 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:30" (2/3) ... [2021-08-27 16:06:32,257 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e52776c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:06:32, skipping insertion in model container [2021-08-27 16:06:32,257 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:06:32,257 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:06:32" (3/3) ... [2021-08-27 16:06:32,259 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product64.cil.c [2021-08-27 16:06:32,306 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:06:32,306 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:06:32,306 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:06:32,306 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:06:32,306 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:06:32,306 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:06:32,307 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:06:32,307 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:06:32,323 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 228 states, 227 states have (on average 1.5110132158590308) internal successors, (343), 227 states have internal predecessors, (343), 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 16:06:32,349 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2021-08-27 16:06:32,349 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:32,349 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:32,356 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:32,356 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:32,356 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:06:32,357 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 228 states, 227 states have (on average 1.5110132158590308) internal successors, (343), 227 states have internal predecessors, (343), 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 16:06:32,366 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2021-08-27 16:06:32,366 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:32,366 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:32,367 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:32,367 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:32,371 INFO L791 eck$LassoCheckResult]: Stem: 219#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~string14.base, #t~string14.offset := #Ultimate.allocOnStack(13);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(110, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 3 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string20.base, #t~string20.offset, 1);call write~init~int(80, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(117, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(109, #t~string20.base, 3 + #t~string20.offset, 1);call write~init~int(112, #t~string20.base, 4 + #t~string20.offset, 1);call write~init~int(58, #t~string20.base, 5 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 6 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string26.base, #t~string26.offset, 1);call write~init~int(32, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 2 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string28.base, #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 1 + #t~string28.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 159#L-1true havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~10, main_~tmp~8;havoc main_~retValue_acc~10;havoc main_~tmp~8; 218#L67true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 172#L75true main_#t~ret47 := valid_product_#res;main_~tmp~8 := main_#t~ret47;havoc main_#t~ret47; 18#L663true assume 0 != main_~tmp~8; 156#L639true ~methAndRunningLastTime~0 := 0; 60#L443true havoc test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 51#L454-1true [2021-08-27 16:06:32,372 INFO L793 eck$LassoCheckResult]: Loop: 51#L454-1true assume !false; 7#L370true assume test_~splverifierCounter~0 < 4; 176#L371true test_~tmp~6 := test_#t~nondet31;havoc test_#t~nondet31; 97#L379true assume !(0 != test_~tmp~6); 39#L379-1true test_~tmp___0~2 := test_#t~nondet32;havoc test_#t~nondet32; 19#L389true assume !(0 != test_~tmp___0~2); 177#L389-1true test_~tmp___2~0 := test_#t~nondet33;havoc test_#t~nondet33; 65#L399true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 87#L407-1true assume !(0 != ~pumpRunning~0); 167#L100true assume !(0 != ~systemActive~0); 120#L107true havoc __utac_acc__Specification2_spec__2_#t~ret35, __utac_acc__Specification2_spec__2_#t~ret36, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 78#L520-5true __utac_acc__Specification2_spec__2_#t~ret35 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret35;havoc __utac_acc__Specification2_spec__2_#t~ret35; 5#L454true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 51#L454-1true [2021-08-27 16:06:32,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:32,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:06:32,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:32,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514807126] [2021-08-27 16:06:32,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:32,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:32,556 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:32,708 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:32,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:32,713 INFO L82 PathProgramCache]: Analyzing trace with hash 18699284, now seen corresponding path program 1 times [2021-08-27 16:06:32,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:32,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727251547] [2021-08-27 16:06:32,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:32,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:06:32,794 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 16:06:32,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:06:32,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727251547] [2021-08-27 16:06:32,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727251547] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:06:32,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:06:32,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:06:32,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934566586] [2021-08-27 16:06:32,800 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:06:32,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:06:32,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:06:32,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:06:32,816 INFO L87 Difference]: Start difference. First operand has 228 states, 227 states have (on average 1.5110132158590308) internal successors, (343), 227 states have internal predecessors, (343), 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 16:06:32,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:06:32,909 INFO L93 Difference]: Finished difference Result 449 states and 661 transitions. [2021-08-27 16:06:32,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:06:32,911 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 449 states and 661 transitions. [2021-08-27 16:06:32,924 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 294 [2021-08-27 16:06:32,934 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 449 states to 435 states and 646 transitions. [2021-08-27 16:06:32,935 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 435 [2021-08-27 16:06:32,937 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 435 [2021-08-27 16:06:32,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 435 states and 646 transitions. [2021-08-27 16:06:32,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:06:32,944 INFO L681 BuchiCegarLoop]: Abstraction has 435 states and 646 transitions. [2021-08-27 16:06:32,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states and 646 transitions. [2021-08-27 16:06:32,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 433. [2021-08-27 16:06:33,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 433 states have (on average 1.4849884526558892) internal successors, (643), 432 states have internal predecessors, (643), 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 16:06:33,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 643 transitions. [2021-08-27 16:06:33,002 INFO L704 BuchiCegarLoop]: Abstraction has 433 states and 643 transitions. [2021-08-27 16:06:33,002 INFO L587 BuchiCegarLoop]: Abstraction has 433 states and 643 transitions. [2021-08-27 16:06:33,002 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:06:33,002 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 433 states and 643 transitions. [2021-08-27 16:06:33,006 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 292 [2021-08-27 16:06:33,006 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:33,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:33,008 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:33,008 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:33,009 INFO L791 eck$LassoCheckResult]: Stem: 933#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~string14.base, #t~string14.offset := #Ultimate.allocOnStack(13);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(110, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 3 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string20.base, #t~string20.offset, 1);call write~init~int(80, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(117, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(109, #t~string20.base, 3 + #t~string20.offset, 1);call write~init~int(112, #t~string20.base, 4 + #t~string20.offset, 1);call write~init~int(58, #t~string20.base, 5 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 6 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string26.base, #t~string26.offset, 1);call write~init~int(32, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 2 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string28.base, #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 1 + #t~string28.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 900#L-1 havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~10, main_~tmp~8;havoc main_~retValue_acc~10;havoc main_~tmp~8; 901#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 907#L75 main_#t~ret47 := valid_product_#res;main_~tmp~8 := main_#t~ret47;havoc main_#t~ret47; 719#L663 assume 0 != main_~tmp~8; 720#L639 ~methAndRunningLastTime~0 := 0; 790#L443 havoc test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 791#L454-1 [2021-08-27 16:06:33,009 INFO L793 eck$LassoCheckResult]: Loop: 791#L454-1 assume !false; 695#L370 assume test_~splverifierCounter~0 < 4; 696#L371 test_~tmp~6 := test_#t~nondet31;havoc test_#t~nondet31; 951#L379 assume !(0 != test_~tmp~6); 949#L379-1 test_~tmp___0~2 := test_#t~nondet32;havoc test_#t~nondet32; 948#L389 assume !(0 != test_~tmp___0~2); 946#L389-1 test_~tmp___2~0 := test_#t~nondet33;havoc test_#t~nondet33; 945#L399 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 799#L407-1 assume !(0 != ~pumpRunning~0); 905#L100 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret10, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 811#L184 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret9, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 813#L158-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 908#L132-3 assume !(0 == ~pumpRunning~0); 727#L107 havoc __utac_acc__Specification2_spec__2_#t~ret35, __utac_acc__Specification2_spec__2_#t~ret36, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 818#L520-5 __utac_acc__Specification2_spec__2_#t~ret35 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret35;havoc __utac_acc__Specification2_spec__2_#t~ret35; 819#L454 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 791#L454-1 [2021-08-27 16:06:33,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:33,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:06:33,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:33,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44706596] [2021-08-27 16:06:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:33,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:33,076 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:33,150 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:33,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:33,150 INFO L82 PathProgramCache]: Analyzing trace with hash -407199801, now seen corresponding path program 1 times [2021-08-27 16:06:33,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:33,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792928832] [2021-08-27 16:06:33,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:33,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:06:33,191 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 16:06:33,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:06:33,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792928832] [2021-08-27 16:06:33,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792928832] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:06:33,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:06:33,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:06:33,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679508366] [2021-08-27 16:06:33,193 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:06:33,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:06:33,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:06:33,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:06:33,194 INFO L87 Difference]: Start difference. First operand 433 states and 643 transitions. cyclomatic complexity: 213 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16:06:33,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:06:33,356 INFO L93 Difference]: Finished difference Result 432 states and 611 transitions. [2021-08-27 16:06:33,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:06:33,357 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 432 states and 611 transitions. [2021-08-27 16:06:33,360 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 299 [2021-08-27 16:06:33,362 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 432 states to 432 states and 611 transitions. [2021-08-27 16:06:33,362 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 432 [2021-08-27 16:06:33,363 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 432 [2021-08-27 16:06:33,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 432 states and 611 transitions. [2021-08-27 16:06:33,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:06:33,364 INFO L681 BuchiCegarLoop]: Abstraction has 432 states and 611 transitions. [2021-08-27 16:06:33,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states and 611 transitions. [2021-08-27 16:06:33,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2021-08-27 16:06:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 432 states have (on average 1.4143518518518519) internal successors, (611), 431 states have internal predecessors, (611), 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 16:06:33,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 611 transitions. [2021-08-27 16:06:33,377 INFO L704 BuchiCegarLoop]: Abstraction has 432 states and 611 transitions. [2021-08-27 16:06:33,377 INFO L587 BuchiCegarLoop]: Abstraction has 432 states and 611 transitions. [2021-08-27 16:06:33,377 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:06:33,377 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 432 states and 611 transitions. [2021-08-27 16:06:33,378 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 299 [2021-08-27 16:06:33,378 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:33,379 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:33,382 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:33,382 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:33,382 INFO L791 eck$LassoCheckResult]: Stem: 1764#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~string14.base, #t~string14.offset := #Ultimate.allocOnStack(13);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(110, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 3 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string20.base, #t~string20.offset, 1);call write~init~int(80, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(117, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(109, #t~string20.base, 3 + #t~string20.offset, 1);call write~init~int(112, #t~string20.base, 4 + #t~string20.offset, 1);call write~init~int(58, #t~string20.base, 5 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 6 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string26.base, #t~string26.offset, 1);call write~init~int(32, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 2 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string28.base, #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 1 + #t~string28.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1661#L-1 havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~10, main_~tmp~8;havoc main_~retValue_acc~10;havoc main_~tmp~8; 1662#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1696#L75 main_#t~ret47 := valid_product_#res;main_~tmp~8 := main_#t~ret47;havoc main_#t~ret47; 1612#L663 assume 0 != main_~tmp~8; 1613#L639 ~methAndRunningLastTime~0 := 0; 1659#L443 havoc test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1695#L454-1 [2021-08-27 16:06:33,383 INFO L793 eck$LassoCheckResult]: Loop: 1695#L454-1 assume !false; 1814#L370 assume test_~splverifierCounter~0 < 4; 1784#L371 test_~tmp~6 := test_#t~nondet31;havoc test_#t~nondet31; 1785#L379 assume !(0 != test_~tmp~6); 1779#L379-1 test_~tmp___0~2 := test_#t~nondet32;havoc test_#t~nondet32; 1780#L389 assume !(0 != test_~tmp___0~2); 1774#L389-1 test_~tmp___2~0 := test_#t~nondet33;havoc test_#t~nondet33; 1775#L399 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1602#L407-1 assume !(0 != ~pumpRunning~0); 1684#L100 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret10, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1685#L184 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret9, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 1859#L158-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1858#L132-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret29, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1855#L560-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1851#L565-3 isHighWaterLevel_#t~ret29 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret29;havoc isHighWaterLevel_#t~ret29; 1848#L303-9 assume !(0 != isHighWaterLevel_~tmp~4);isHighWaterLevel_~tmp___0~0 := 1; 1844#L303-11 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 1841#L309-3 processEnvironment__wrappee__highWaterSensor_#t~ret8 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret8;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8; 1830#L136-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1670#L107 havoc __utac_acc__Specification2_spec__2_#t~ret35, __utac_acc__Specification2_spec__2_#t~ret36, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 1798#L520-5 __utac_acc__Specification2_spec__2_#t~ret35 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret35;havoc __utac_acc__Specification2_spec__2_#t~ret35; 1792#L454 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 1695#L454-1 [2021-08-27 16:06:33,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:33,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:06:33,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:33,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428386678] [2021-08-27 16:06:33,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:33,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:33,413 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:33,454 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:33,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:33,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1236648395, now seen corresponding path program 1 times [2021-08-27 16:06:33,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:33,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068177983] [2021-08-27 16:06:33,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:33,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:06:33,494 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 16:06:33,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:06:33,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068177983] [2021-08-27 16:06:33,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068177983] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:06:33,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:06:33,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:06:33,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87628822] [2021-08-27 16:06:33,496 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:06:33,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:06:33,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 16:06:33,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 16:06:33,497 INFO L87 Difference]: Start difference. First operand 432 states and 611 transitions. cyclomatic complexity: 182 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:06:33,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:06:33,707 INFO L93 Difference]: Finished difference Result 839 states and 1161 transitions. [2021-08-27 16:06:33,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 16:06:33,708 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 839 states and 1161 transitions. [2021-08-27 16:06:33,714 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 586 [2021-08-27 16:06:33,719 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 839 states to 839 states and 1161 transitions. [2021-08-27 16:06:33,719 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 839 [2021-08-27 16:06:33,719 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 839 [2021-08-27 16:06:33,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 839 states and 1161 transitions. [2021-08-27 16:06:33,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:06:33,721 INFO L681 BuchiCegarLoop]: Abstraction has 839 states and 1161 transitions. [2021-08-27 16:06:33,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states and 1161 transitions. [2021-08-27 16:06:33,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 468. [2021-08-27 16:06:33,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 468 states have (on average 1.3824786324786325) internal successors, (647), 467 states have internal predecessors, (647), 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 16:06:33,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 647 transitions. [2021-08-27 16:06:33,739 INFO L704 BuchiCegarLoop]: Abstraction has 468 states and 647 transitions. [2021-08-27 16:06:33,740 INFO L587 BuchiCegarLoop]: Abstraction has 468 states and 647 transitions. [2021-08-27 16:06:33,740 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:06:33,740 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 468 states and 647 transitions. [2021-08-27 16:06:33,742 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 323 [2021-08-27 16:06:33,742 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:33,742 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:33,743 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:33,743 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:33,743 INFO L791 eck$LassoCheckResult]: Stem: 3061#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~string14.base, #t~string14.offset := #Ultimate.allocOnStack(13);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(110, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 3 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string20.base, #t~string20.offset, 1);call write~init~int(80, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(117, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(109, #t~string20.base, 3 + #t~string20.offset, 1);call write~init~int(112, #t~string20.base, 4 + #t~string20.offset, 1);call write~init~int(58, #t~string20.base, 5 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 6 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string26.base, #t~string26.offset, 1);call write~init~int(32, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 2 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string28.base, #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 1 + #t~string28.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 2944#L-1 havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~10, main_~tmp~8;havoc main_~retValue_acc~10;havoc main_~tmp~8; 2945#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 2982#L75 main_#t~ret47 := valid_product_#res;main_~tmp~8 := main_#t~ret47;havoc main_#t~ret47; 2900#L663 assume 0 != main_~tmp~8; 2901#L639 ~methAndRunningLastTime~0 := 0; 2942#L443 havoc test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2977#L454-1 [2021-08-27 16:06:33,743 INFO L793 eck$LassoCheckResult]: Loop: 2977#L454-1 assume !false; 3168#L370 assume test_~splverifierCounter~0 < 4; 3167#L371 test_~tmp~6 := test_#t~nondet31;havoc test_#t~nondet31; 3166#L379 assume !(0 != test_~tmp~6); 3164#L379-1 test_~tmp___0~2 := test_#t~nondet32;havoc test_#t~nondet32; 3163#L389 assume !(0 != test_~tmp___0~2); 3160#L389-1 test_~tmp___2~0 := test_#t~nondet33;havoc test_#t~nondet33; 3159#L399 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2883#L407-1 assume !(0 != ~pumpRunning~0); 3026#L100 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret10, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 3158#L184 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret9, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 3157#L158-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 3156#L132-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret29, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 2973#L560-3 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~8 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 2866#L565-3 isHighWaterLevel_#t~ret29 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret29;havoc isHighWaterLevel_#t~ret29; 2867#L303-9 assume !(0 != isHighWaterLevel_~tmp~4);isHighWaterLevel_~tmp___0~0 := 1; 3018#L303-11 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 3007#L309-3 processEnvironment__wrappee__highWaterSensor_#t~ret8 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret8;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8; 2906#L136-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 2899#L107 havoc __utac_acc__Specification2_spec__2_#t~ret35, __utac_acc__Specification2_spec__2_#t~ret36, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 3174#L520-5 __utac_acc__Specification2_spec__2_#t~ret35 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret35;havoc __utac_acc__Specification2_spec__2_#t~ret35; 3172#L454 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 2977#L454-1 [2021-08-27 16:06:33,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:33,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:06:33,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:33,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861097429] [2021-08-27 16:06:33,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:33,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:33,767 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:33,795 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:33,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:33,796 INFO L82 PathProgramCache]: Analyzing trace with hash -556590025, now seen corresponding path program 1 times [2021-08-27 16:06:33,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:33,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011169733] [2021-08-27 16:06:33,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:33,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:06:33,844 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 16:06:33,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:06:33,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011169733] [2021-08-27 16:06:33,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011169733] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:06:33,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:06:33,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:06:33,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356464867] [2021-08-27 16:06:33,846 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:06:33,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:06:33,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:06:33,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:06:33,847 INFO L87 Difference]: Start difference. First operand 468 states and 647 transitions. cyclomatic complexity: 182 Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:06:34,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:06:34,152 INFO L93 Difference]: Finished difference Result 1084 states and 1489 transitions. [2021-08-27 16:06:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:06:34,153 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1084 states and 1489 transitions. [2021-08-27 16:06:34,159 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 765 [2021-08-27 16:06:34,164 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1084 states to 1084 states and 1489 transitions. [2021-08-27 16:06:34,165 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1084 [2021-08-27 16:06:34,165 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1084 [2021-08-27 16:06:34,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1084 states and 1489 transitions. [2021-08-27 16:06:34,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:06:34,169 INFO L681 BuchiCegarLoop]: Abstraction has 1084 states and 1489 transitions. [2021-08-27 16:06:34,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states and 1489 transitions. [2021-08-27 16:06:34,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 522. [2021-08-27 16:06:34,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 522 states have (on average 1.342911877394636) internal successors, (701), 521 states have internal predecessors, (701), 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 16:06:34,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 701 transitions. [2021-08-27 16:06:34,181 INFO L704 BuchiCegarLoop]: Abstraction has 522 states and 701 transitions. [2021-08-27 16:06:34,181 INFO L587 BuchiCegarLoop]: Abstraction has 522 states and 701 transitions. [2021-08-27 16:06:34,181 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-27 16:06:34,185 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 522 states and 701 transitions. [2021-08-27 16:06:34,187 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 359 [2021-08-27 16:06:34,187 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:34,187 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:34,188 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:34,188 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:34,189 INFO L791 eck$LassoCheckResult]: Stem: 4670#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~string14.base, #t~string14.offset := #Ultimate.allocOnStack(13);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(110, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(102, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 3 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string20.base, #t~string20.offset, 1);call write~init~int(80, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(117, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(109, #t~string20.base, 3 + #t~string20.offset, 1);call write~init~int(112, #t~string20.base, 4 + #t~string20.offset, 1);call write~init~int(58, #t~string20.base, 5 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 6 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string26.base, #t~string26.offset, 1);call write~init~int(32, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 2 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string28.base, #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 1 + #t~string28.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(13);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string40.base, #t~string40.offset, 1);call write~init~int(77, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(101, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(116, #t~string40.base, 3 + #t~string40.offset, 1);call write~init~int(104, #t~string40.base, 4 + #t~string40.offset, 1);call write~init~int(58, #t~string40.base, 5 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 6 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string42.base, #t~string42.offset, 1);call write~init~int(82, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(73, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(84, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 4 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string44.base, #t~string44.offset, 1);call write~init~int(75, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 2 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string46.base, #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 1 + #t~string46.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 4515#L-1 havoc main_#res;havoc main_#t~ret47, main_~retValue_acc~10, main_~tmp~8;havoc main_~retValue_acc~10;havoc main_~tmp~8; 4516#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 4563#L75 main_#t~ret47 := valid_product_#res;main_~tmp~8 := main_#t~ret47;havoc main_#t~ret47; 4466#L663 assume 0 != main_~tmp~8; 4467#L639 ~methAndRunningLastTime~0 := 0; 4513#L443 havoc test_#t~nondet31, test_#t~nondet32, test_#t~nondet33, test_#t~nondet34, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 4412#L454-1 [2021-08-27 16:06:34,193 INFO L793 eck$LassoCheckResult]: Loop: 4412#L454-1 assume !false; 4540#L370 assume test_~splverifierCounter~0 < 4; 4567#L371 test_~tmp~6 := test_#t~nondet31;havoc test_#t~nondet31; 4568#L379 assume !(0 != test_~tmp~6); 4489#L379-1 test_~tmp___0~2 := test_#t~nondet32;havoc test_#t~nondet32; 4729#L389 assume !(0 != test_~tmp___0~2); 4569#L389-1 test_~tmp___2~0 := test_#t~nondet33;havoc test_#t~nondet33; 4570#L399 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 4449#L407-1 assume !(0 != ~pumpRunning~0); 4756#L100 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret10, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 4786#L184 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret9, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 4778#L158-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret8, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 4777#L132-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret29, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 4552#L560-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 4553#L565-3 isHighWaterLevel_#t~ret29 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret29;havoc isHighWaterLevel_#t~ret29; 4659#L303-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~0 := 0; 4660#L303-11 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 4596#L309-3 processEnvironment__wrappee__highWaterSensor_#t~ret8 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret8;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8; 4597#L136-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 4761#L107 havoc __utac_acc__Specification2_spec__2_#t~ret35, __utac_acc__Specification2_spec__2_#t~ret36, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 4601#L520-5 __utac_acc__Specification2_spec__2_#t~ret35 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret35;havoc __utac_acc__Specification2_spec__2_#t~ret35; 4410#L454 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 4412#L454-1 [2021-08-27 16:06:34,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:34,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 5 times [2021-08-27 16:06:34,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:34,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332168662] [2021-08-27 16:06:34,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:34,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:34,229 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:34,270 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:34,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:34,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1283311539, now seen corresponding path program 1 times [2021-08-27 16:06:34,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:34,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718255364] [2021-08-27 16:06:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:34,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:34,277 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:34,285 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:34,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:34,286 INFO L82 PathProgramCache]: Analyzing trace with hash 416127097, now seen corresponding path program 1 times [2021-08-27 16:06:34,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:34,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429316491] [2021-08-27 16:06:34,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:34,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:34,314 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:34,365 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:07:15,676 WARN L207 SmtUtils]: Spent 40.99 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:07:58,773 WARN L207 SmtUtils]: Spent 20.69 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:07:58,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:07:58 BoogieIcfgContainer [2021-08-27 16:07:58,896 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:07:58,897 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:07:58,897 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:07:58,897 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:07:58,898 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:06:32" (3/4) ... [2021-08-27 16:07:58,900 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:07:58,935 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:07:58,935 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:07:58,936 INFO L168 Benchmark]: Toolchain (without parser) took 88537.48 ms. Allocated memory was 60.8 MB in the beginning and 113.2 MB in the end (delta: 52.4 MB). Free memory was 39.0 MB in the beginning and 49.6 MB in the end (delta: -10.6 MB). Peak memory consumption was 41.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:58,936 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 43.1 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:07:58,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.50 ms. Allocated memory is still 60.8 MB. Free memory was 38.9 MB in the beginning and 35.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:58,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.18 ms. Allocated memory is still 60.8 MB. Free memory was 35.3 MB in the beginning and 29.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:58,937 INFO L168 Benchmark]: Boogie Preprocessor took 110.88 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 29.7 MB in the beginning and 54.0 MB in the end (delta: -24.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:58,938 INFO L168 Benchmark]: RCFGBuilder took 1205.54 ms. Allocated memory was 73.4 MB in the beginning and 94.4 MB in the end (delta: 21.0 MB). Free memory was 54.0 MB in the beginning and 70.5 MB in the end (delta: -16.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:58,938 INFO L168 Benchmark]: BuchiAutomizer took 86644.46 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 70.5 MB in the beginning and 52.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 72.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:58,938 INFO L168 Benchmark]: Witness Printer took 37.97 ms. Allocated memory is still 113.2 MB. Free memory was 52.6 MB in the beginning and 49.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:58,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 43.1 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 436.50 ms. Allocated memory is still 60.8 MB. Free memory was 38.9 MB in the beginning and 35.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.18 ms. Allocated memory is still 60.8 MB. Free memory was 35.3 MB in the beginning and 29.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 110.88 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 29.7 MB in the beginning and 54.0 MB in the end (delta: -24.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1205.54 ms. Allocated memory was 73.4 MB in the beginning and 94.4 MB in the end (delta: 21.0 MB). Free memory was 54.0 MB in the beginning and 70.5 MB in the end (delta: -16.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 86644.46 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 70.5 MB in the beginning and 52.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 72.4 MB. Max. memory is 16.1 GB. * Witness Printer took 37.97 ms. Allocated memory is still 113.2 MB. Free memory was 52.6 MB in the beginning and 49.6 MB in the end (delta: 3.0 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 522 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 86.5s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 85.5s. Construction of modules took 0.4s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 89.9ms AutomataMinimizationTime, 4 MinimizatonAttempts, 935 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 522 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1280 SDtfs, 1665 SDslu, 1618 SDs, 0 SdLazy, 291 SolverSat, 94 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 444.2ms 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: 369]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=30463} State at position 1 is {NULL=0, NULL=0, NULL=30463, NULL=30471, NULL=30469, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b25eda4=0, NULL=0, NULL=30488, methaneLevelCritical=0, NULL=30491, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b8f9a54=0, retValue_acc=0, NULL=0, tmp=0, NULL=30470, NULL=0, tmp___1=0, NULL=0, NULL=30483, cleanupTimeShifts=4, NULL=30475, NULL=30476, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49a03a10=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73ccbc8c=70, waterLevel=1, NULL=0, NULL=30473, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c064adb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c560ae=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@20b07c8d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1edb123a=0, NULL=0, NULL=0, NULL=0, tmp=1, NULL=0, NULL=30468, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@50568328=0, NULL=0, tmp___0=0, NULL=30479, methAndRunningLastTime=0, NULL=30484, tmp=0, head=0, tmp=0, NULL=0, NULL=0, NULL=30480, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@317ab172=0, NULL=0, NULL=0, NULL=30477, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@31652fe0=0, NULL=0, tmp___0=0, NULL=0, NULL=30489, NULL=0, NULL=0, tmp=0, NULL=30478, NULL=0, systemActive=1, NULL=30481, NULL=0, retValue_acc=0, \result=0, retValue_acc=0, NULL=30486, NULL=30472, \result=0, NULL=30485, NULL=0, NULL=0, NULL=30467, NULL=30482, NULL=30490, NULL=30465, retValue_acc=1, tmp___0=0, tmp___2=70, splverifierCounter=0, NULL=0, \result=0, NULL=30466, NULL=30487, NULL=0, NULL=0, NULL=30464, NULL=0, NULL=30474, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L92] int pumpRunning = 0; [L93] int systemActive = 1; [L437] int methAndRunningLastTime ; [L477] int waterLevel = 1; [L478] int methaneLevelCritical = 0; [L580] int cleanupTimeShifts = 4; [L846] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L654] int retValue_acc ; [L655] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L661] tmp = valid_product() [L663] COND TRUE \read(tmp) [L442] methAndRunningLastTime = 0 [L360] int splverifierCounter ; [L361] int tmp ; [L362] int tmp___0 ; [L363] int tmp___1 ; [L364] int tmp___2 ; [L367] splverifierCounter = 0 Loop: [L369] COND TRUE 1 [L371] COND TRUE splverifierCounter < 4 [L377] tmp = __VERIFIER_nondet_int() [L379] COND FALSE !(\read(tmp)) [L387] tmp___0 = __VERIFIER_nondet_int() [L389] COND FALSE !(\read(tmp___0)) [L397] tmp___2 = __VERIFIER_nondet_int() [L399] COND TRUE \read(tmp___2) [L351] systemActive = 1 [L100] COND FALSE !(\read(pumpRunning)) [L107] COND TRUE \read(systemActive) [L181] int tmp ; [L184] COND FALSE !(\read(pumpRunning)) [L155] int tmp ; [L158] COND FALSE !(\read(pumpRunning)) [L129] int tmp ; [L132] COND TRUE ! pumpRunning [L295] int retValue_acc ; [L296] int tmp ; [L297] int tmp___0 ; [L557] int retValue_acc ; [L560] COND TRUE waterLevel < 2 [L561] retValue_acc = 1 [L562] return (retValue_acc); [L301] tmp = isHighWaterSensorDry() [L303] COND TRUE \read(tmp) [L304] tmp___0 = 0 [L308] retValue_acc = tmp___0 [L309] return (retValue_acc); [L134] tmp = isHighWaterLevel() [L136] COND FALSE !(\read(tmp)) [L447] int tmp ; [L448] int tmp___0 ; [L516] int retValue_acc ; [L519] retValue_acc = methaneLevelCritical [L520] return (retValue_acc); [L452] tmp = isMethaneLevelCritical() [L454] COND FALSE !(\read(tmp)) [L470] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:07:58,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...