./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 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_product44.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 471ad46a1662a2ee36763023473e29e175f1086d40bbf36d792af661871bf09e --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 19:10:21,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 19:10:21,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 19:10:21,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 19:10:21,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 19:10:21,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 19:10:21,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 19:10:21,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 19:10:21,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 19:10:21,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 19:10:21,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 19:10:21,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 19:10:21,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 19:10:21,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 19:10:21,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 19:10:21,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 19:10:21,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 19:10:21,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 19:10:21,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 19:10:21,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 19:10:21,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 19:10:21,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 19:10:21,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 19:10:21,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 19:10:21,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 19:10:21,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 19:10:21,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 19:10:21,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 19:10:21,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 19:10:21,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 19:10:21,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 19:10:21,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 19:10:21,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 19:10:21,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 19:10:21,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 19:10:21,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 19:10:21,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 19:10:21,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 19:10:21,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 19:10:21,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 19:10:21,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 19:10:21,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-19 19:10:21,123 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 19:10:21,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 19:10:21,123 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 19:10:21,123 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 19:10:21,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 19:10:21,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 19:10:21,125 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 19:10:21,125 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 19:10:21,125 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 19:10:21,125 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 19:10:21,126 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 19:10:21,126 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 19:10:21,126 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 19:10:21,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 19:10:21,126 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 19:10:21,127 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 19:10:21,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 19:10:21,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 19:10:21,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 19:10:21,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 19:10:21,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 19:10:21,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 19:10:21,128 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 19:10:21,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 19:10:21,128 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 19:10:21,129 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 19:10:21,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 19:10:21,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 19:10:21,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 19:10:21,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 19:10:21,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 19:10:21,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 19:10:21,130 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 19:10:21,131 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 471ad46a1662a2ee36763023473e29e175f1086d40bbf36d792af661871bf09e [2021-12-19 19:10:21,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 19:10:21,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 19:10:21,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 19:10:21,315 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 19:10:21,316 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 19:10:21,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c [2021-12-19 19:10:21,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0afa79af2/629f51f89e7c4e7fbe32af3c192798a7/FLAGd4611a1a2 [2021-12-19 19:10:21,765 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 19:10:21,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c [2021-12-19 19:10:21,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0afa79af2/629f51f89e7c4e7fbe32af3c192798a7/FLAGd4611a1a2 [2021-12-19 19:10:21,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0afa79af2/629f51f89e7c4e7fbe32af3c192798a7 [2021-12-19 19:10:21,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 19:10:21,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 19:10:21,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 19:10:21,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 19:10:21,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 19:10:21,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:10:21" (1/1) ... [2021-12-19 19:10:21,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc47bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:10:21, skipping insertion in model container [2021-12-19 19:10:21,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:10:21" (1/1) ... [2021-12-19 19:10:21,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 19:10:21,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 19:10:21,945 WARN L230 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_product44.cil.c[1605,1618] [2021-12-19 19:10:22,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 19:10:22,018 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 19:10:22,030 WARN L230 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_product44.cil.c[1605,1618] [2021-12-19 19:10:22,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 19:10:22,112 INFO L208 MainTranslator]: Completed translation [2021-12-19 19:10:22,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:10:22 WrapperNode [2021-12-19 19:10:22,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 19:10:22,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 19:10:22,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 19:10:22,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 19:10:22,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:10:22" (1/1) ... [2021-12-19 19:10:22,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:10:22" (1/1) ... [2021-12-19 19:10:22,164 INFO L137 Inliner]: procedures = 56, calls = 155, calls flagged for inlining = 52, calls inlined = 60, statements flattened = 478 [2021-12-19 19:10:22,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 19:10:22,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 19:10:22,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 19:10:22,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 19:10:22,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:10:22" (1/1) ... [2021-12-19 19:10:22,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:10:22" (1/1) ... [2021-12-19 19:10:22,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:10:22" (1/1) ... [2021-12-19 19:10:22,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:10:22" (1/1) ... [2021-12-19 19:10:22,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:10:22" (1/1) ... [2021-12-19 19:10:22,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:10:22" (1/1) ... [2021-12-19 19:10:22,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:10:22" (1/1) ... [2021-12-19 19:10:22,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 19:10:22,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 19:10:22,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 19:10:22,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 19:10:22,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:10:22" (1/1) ... [2021-12-19 19:10:22,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:10:22,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:10:22,236 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) [2021-12-19 19:10:22,238 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 [2021-12-19 19:10:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 19:10:22,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 19:10:22,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 19:10:22,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 19:10:22,308 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 19:10:22,309 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 19:10:22,577 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 19:10:22,582 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 19:10:22,582 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-19 19:10:22,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:10:22 BoogieIcfgContainer [2021-12-19 19:10:22,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 19:10:22,585 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 19:10:22,585 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 19:10:22,587 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 19:10:22,587 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 19:10:22,588 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 07:10:21" (1/3) ... [2021-12-19 19:10:22,588 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@22da2aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 07:10:22, skipping insertion in model container [2021-12-19 19:10:22,588 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 19:10:22,589 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:10:22" (2/3) ... [2021-12-19 19:10:22,589 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@22da2aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 07:10:22, skipping insertion in model container [2021-12-19 19:10:22,589 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 19:10:22,589 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:10:22" (3/3) ... [2021-12-19 19:10:22,590 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product44.cil.c [2021-12-19 19:10:22,617 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 19:10:22,617 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 19:10:22,617 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 19:10:22,617 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 19:10:22,618 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 19:10:22,618 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 19:10:22,618 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 19:10:22,618 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 19:10:22,634 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 126 states, 125 states have (on average 1.376) internal successors, (172), 125 states have internal predecessors, (172), 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) [2021-12-19 19:10:22,656 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2021-12-19 19:10:22,656 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:10:22,657 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:10:22,661 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:10:22,661 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:10:22,661 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 19:10:22,662 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 126 states, 125 states have (on average 1.376) internal successors, (172), 125 states have internal predecessors, (172), 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) [2021-12-19 19:10:22,665 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2021-12-19 19:10:22,666 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:10:22,666 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:10:22,666 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:10:22,667 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:10:22,670 INFO L791 eck$LassoCheckResult]: Stem: 113#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 43#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret21#1, main_~retValue_acc~5#1, main_~tmp~4#1;havoc main_~retValue_acc~5#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 70#L361true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 54#L354true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 39#L369true main_#t~ret21#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret21#1;havoc main_#t~ret21#1; 101#L458true assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 65#L433true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 125#L478true assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet4#1, test_#t~nondet5#1, test_#t~nondet6#1, test_#t~nondet7#1, test_~splverifierCounter~0#1, test_~tmp~0#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~0#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 112#L75-2true [2021-12-19 19:10:22,670 INFO L793 eck$LassoCheckResult]: Loop: 112#L75-2true assume !false; 63#L76true assume test_~splverifierCounter~0#1 < 4; 74#L77true test_~tmp~0#1 := test_#t~nondet4#1;havoc test_#t~nondet4#1; 40#L85true assume !(0 != test_~tmp~0#1); 4#L85-2true test_~tmp___0~0#1 := test_#t~nondet5#1;havoc test_#t~nondet5#1; 88#L95true assume !(0 != test_~tmp___0~0#1); 94#L95-2true test_~tmp___2~0#1 := test_#t~nondet6#1;havoc test_#t~nondet6#1; 22#L105true assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 29#L332true assume { :end_inline_startSystem } true; 50#L113-2true assume { :begin_inline_timeShift } true; 93#L150true assume !(0 != ~pumpRunning~0); 87#L150-2true assume !(0 != ~systemActive~0); 21#L157-1true assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret22#1, __utac_acc__Specification2_spec__2_#t~ret23#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 36#L555-1true __utac_acc__Specification2_spec__2_#t~ret22#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret22#1;havoc __utac_acc__Specification2_spec__2_#t~ret22#1; 110#L489true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 96#L489-1true assume { :end_inline___utac_acc__Specification2_spec__2 } true; 24#L167true assume { :end_inline_timeShift } true; 112#L75-2true [2021-12-19 19:10:22,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:10:22,674 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 1 times [2021-12-19 19:10:22,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:10:22,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809943235] [2021-12-19 19:10:22,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:10:22,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:10:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:10:22,768 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:10:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:10:22,819 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:10:22,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:10:22,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1923108105, now seen corresponding path program 1 times [2021-12-19 19:10:22,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:10:22,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746556707] [2021-12-19 19:10:22,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:10:22,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:10:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:10:22,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:10:22,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:10:22,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746556707] [2021-12-19 19:10:22,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746556707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:10:22,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:10:22,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:10:22,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463877125] [2021-12-19 19:10:22,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:10:22,896 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:10:22,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:10:22,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 19:10:22,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 19:10:22,928 INFO L87 Difference]: Start difference. First operand has 126 states, 125 states have (on average 1.376) internal successors, (172), 125 states have internal predecessors, (172), 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 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-12-19 19:10:22,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:10:22,992 INFO L93 Difference]: Finished difference Result 236 states and 310 transitions. [2021-12-19 19:10:22,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 19:10:22,998 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 236 states and 310 transitions. [2021-12-19 19:10:23,005 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2021-12-19 19:10:23,009 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 236 states to 216 states and 289 transitions. [2021-12-19 19:10:23,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 216 [2021-12-19 19:10:23,010 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 216 [2021-12-19 19:10:23,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 216 states and 289 transitions. [2021-12-19 19:10:23,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:10:23,014 INFO L681 BuchiCegarLoop]: Abstraction has 216 states and 289 transitions. [2021-12-19 19:10:23,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states and 289 transitions. [2021-12-19 19:10:23,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2021-12-19 19:10:23,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 213 states have (on average 1.3380281690140845) internal successors, (285), 212 states have internal predecessors, (285), 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) [2021-12-19 19:10:23,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2021-12-19 19:10:23,045 INFO L704 BuchiCegarLoop]: Abstraction has 213 states and 285 transitions. [2021-12-19 19:10:23,045 INFO L587 BuchiCegarLoop]: Abstraction has 213 states and 285 transitions. [2021-12-19 19:10:23,045 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-19 19:10:23,046 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 213 states and 285 transitions. [2021-12-19 19:10:23,047 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 149 [2021-12-19 19:10:23,047 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:10:23,048 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:10:23,048 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:10:23,049 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] [2021-12-19 19:10:23,049 INFO L791 eck$LassoCheckResult]: Stem: 489#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 437#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret21#1, main_~retValue_acc~5#1, main_~tmp~4#1;havoc main_~retValue_acc~5#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 438#L361 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 454#L354 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 433#L369 main_#t~ret21#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret21#1;havoc main_#t~ret21#1; 434#L458 assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 464#L433 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 465#L478 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet4#1, test_#t~nondet5#1, test_#t~nondet6#1, test_#t~nondet7#1, test_~splverifierCounter~0#1, test_~tmp~0#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~0#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 493#L75-2 [2021-12-19 19:10:23,049 INFO L793 eck$LassoCheckResult]: Loop: 493#L75-2 assume !false; 524#L76 assume test_~splverifierCounter~0#1 < 4; 469#L77 test_~tmp~0#1 := test_#t~nondet4#1;havoc test_#t~nondet4#1; 470#L85 assume !(0 != test_~tmp~0#1); 559#L85-2 test_~tmp___0~0#1 := test_#t~nondet5#1;havoc test_#t~nondet5#1; 556#L95 assume !(0 != test_~tmp___0~0#1); 553#L95-2 test_~tmp___2~0#1 := test_#t~nondet6#1;havoc test_#t~nondet6#1; 551#L105 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet7#1;havoc test_#t~nondet7#1; 549#L113 assume !(0 != test_~tmp___1~0#1); 422#L113-2 assume { :begin_inline_timeShift } true; 545#L150 assume !(0 != ~pumpRunning~0); 542#L150-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret8#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 540#L182 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 536#L174-1 assume { :end_inline_processEnvironment__wrappee__base } true; 534#L182-1 assume { :end_inline_processEnvironment } true; 533#L157-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret22#1, __utac_acc__Specification2_spec__2_#t~ret23#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 532#L555-1 __utac_acc__Specification2_spec__2_#t~ret22#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret22#1;havoc __utac_acc__Specification2_spec__2_#t~ret22#1; 530#L489 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 527#L489-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 526#L167 assume { :end_inline_timeShift } true; 493#L75-2 [2021-12-19 19:10:23,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:10:23,050 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 2 times [2021-12-19 19:10:23,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:10:23,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936682031] [2021-12-19 19:10:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:10:23,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:10:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:10:23,064 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:10:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:10:23,076 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:10:23,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:10:23,084 INFO L85 PathProgramCache]: Analyzing trace with hash -981666389, now seen corresponding path program 1 times [2021-12-19 19:10:23,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:10:23,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148775561] [2021-12-19 19:10:23,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:10:23,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:10:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:10:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:10:23,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:10:23,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148775561] [2021-12-19 19:10:23,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148775561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:10:23,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:10:23,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:10:23,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137260394] [2021-12-19 19:10:23,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:10:23,098 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:10:23,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:10:23,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 19:10:23,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 19:10:23,099 INFO L87 Difference]: Start difference. First operand 213 states and 285 transitions. cyclomatic complexity: 75 Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 19:10:23,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:10:23,130 INFO L93 Difference]: Finished difference Result 331 states and 432 transitions. [2021-12-19 19:10:23,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 19:10:23,131 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 331 states and 432 transitions. [2021-12-19 19:10:23,133 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 239 [2021-12-19 19:10:23,134 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 331 states to 331 states and 432 transitions. [2021-12-19 19:10:23,135 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 331 [2021-12-19 19:10:23,135 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 331 [2021-12-19 19:10:23,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 331 states and 432 transitions. [2021-12-19 19:10:23,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:10:23,136 INFO L681 BuchiCegarLoop]: Abstraction has 331 states and 432 transitions. [2021-12-19 19:10:23,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states and 432 transitions. [2021-12-19 19:10:23,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2021-12-19 19:10:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 331 states have (on average 1.3051359516616314) internal successors, (432), 330 states have internal predecessors, (432), 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) [2021-12-19 19:10:23,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 432 transitions. [2021-12-19 19:10:23,148 INFO L704 BuchiCegarLoop]: Abstraction has 331 states and 432 transitions. [2021-12-19 19:10:23,148 INFO L587 BuchiCegarLoop]: Abstraction has 331 states and 432 transitions. [2021-12-19 19:10:23,148 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-19 19:10:23,149 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 331 states and 432 transitions. [2021-12-19 19:10:23,150 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 239 [2021-12-19 19:10:23,150 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:10:23,150 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:10:23,152 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:10:23,152 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:10:23,152 INFO L791 eck$LassoCheckResult]: Stem: 1067#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 992#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret21#1, main_~retValue_acc~5#1, main_~tmp~4#1;havoc main_~retValue_acc~5#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 993#L361 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1012#L354 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 986#L369 main_#t~ret21#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret21#1;havoc main_#t~ret21#1; 987#L458 assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 1022#L433 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 1023#L478 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet4#1, test_#t~nondet5#1, test_#t~nondet6#1, test_#t~nondet7#1, test_~splverifierCounter~0#1, test_~tmp~0#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~0#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1076#L75-2 [2021-12-19 19:10:23,152 INFO L793 eck$LassoCheckResult]: Loop: 1076#L75-2 assume !false; 1150#L76 assume test_~splverifierCounter~0#1 < 4; 1151#L77 test_~tmp~0#1 := test_#t~nondet4#1;havoc test_#t~nondet4#1; 1189#L85 assume !(0 != test_~tmp~0#1); 1187#L85-2 test_~tmp___0~0#1 := test_#t~nondet5#1;havoc test_#t~nondet5#1; 1185#L95 assume !(0 != test_~tmp___0~0#1); 1183#L95-2 test_~tmp___2~0#1 := test_#t~nondet6#1;havoc test_#t~nondet6#1; 1182#L105 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet7#1;havoc test_#t~nondet7#1; 1181#L113 assume !(0 != test_~tmp___1~0#1); 973#L113-2 assume { :begin_inline_timeShift } true; 1005#L150 assume !(0 != ~pumpRunning~0); 1042#L150-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret8#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 1043#L182 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret19#1, isHighWaterLevel_~retValue_acc~2#1, isHighWaterLevel_~tmp~3#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~2#1;havoc isHighWaterLevel_~tmp~3#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~8#1;havoc isHighWaterSensorDry_~retValue_acc~8#1; 1053#L595 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~8#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~8#1; 1078#L600 isHighWaterLevel_#t~ret19#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~3#1 := isHighWaterLevel_#t~ret19#1;havoc isHighWaterLevel_#t~ret19#1; 1034#L302 assume 0 != isHighWaterLevel_~tmp~3#1;isHighWaterLevel_~tmp___0~1#1 := 0; 1035#L302-2 isHighWaterLevel_~retValue_acc~2#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~2#1; 1176#L308 processEnvironment_#t~ret8#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~1#1 := processEnvironment_#t~ret8#1;havoc processEnvironment_#t~ret8#1; 1174#L186 assume !(0 != processEnvironment_~tmp~1#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1173#L174 assume { :end_inline_processEnvironment__wrappee__base } true; 1171#L182-1 assume { :end_inline_processEnvironment } true; 1169#L157-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret22#1, __utac_acc__Specification2_spec__2_#t~ret23#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 1167#L555-1 __utac_acc__Specification2_spec__2_#t~ret22#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret22#1;havoc __utac_acc__Specification2_spec__2_#t~ret22#1; 1164#L489 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 1160#L489-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 1158#L167 assume { :end_inline_timeShift } true; 1076#L75-2 [2021-12-19 19:10:23,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:10:23,153 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 3 times [2021-12-19 19:10:23,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:10:23,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106392272] [2021-12-19 19:10:23,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:10:23,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:10:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:10:23,175 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:10:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:10:23,191 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:10:23,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:10:23,194 INFO L85 PathProgramCache]: Analyzing trace with hash 999914901, now seen corresponding path program 1 times [2021-12-19 19:10:23,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:10:23,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884767026] [2021-12-19 19:10:23,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:10:23,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:10:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:10:23,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:10:23,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:10:23,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884767026] [2021-12-19 19:10:23,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884767026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:10:23,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:10:23,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 19:10:23,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266712375] [2021-12-19 19:10:23,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:10:23,233 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:10:23,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:10:23,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 19:10:23,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 19:10:23,234 INFO L87 Difference]: Start difference. First operand 331 states and 432 transitions. cyclomatic complexity: 104 Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-12-19 19:10:23,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:10:23,281 INFO L93 Difference]: Finished difference Result 953 states and 1232 transitions. [2021-12-19 19:10:23,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 19:10:23,283 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 953 states and 1232 transitions. [2021-12-19 19:10:23,287 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 701 [2021-12-19 19:10:23,291 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 953 states to 953 states and 1232 transitions. [2021-12-19 19:10:23,291 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 953 [2021-12-19 19:10:23,292 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 953 [2021-12-19 19:10:23,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 953 states and 1232 transitions. [2021-12-19 19:10:23,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:10:23,296 INFO L681 BuchiCegarLoop]: Abstraction has 953 states and 1232 transitions. [2021-12-19 19:10:23,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states and 1232 transitions. [2021-12-19 19:10:23,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 343. [2021-12-19 19:10:23,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 343 states have (on average 1.2944606413994169) internal successors, (444), 342 states have internal predecessors, (444), 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) [2021-12-19 19:10:23,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 444 transitions. [2021-12-19 19:10:23,321 INFO L704 BuchiCegarLoop]: Abstraction has 343 states and 444 transitions. [2021-12-19 19:10:23,321 INFO L587 BuchiCegarLoop]: Abstraction has 343 states and 444 transitions. [2021-12-19 19:10:23,322 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-19 19:10:23,322 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 343 states and 444 transitions. [2021-12-19 19:10:23,323 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 247 [2021-12-19 19:10:23,323 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:10:23,323 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:10:23,323 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:10:23,324 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:10:23,324 INFO L791 eck$LassoCheckResult]: Stem: 2354#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 2288#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret21#1, main_~retValue_acc~5#1, main_~tmp~4#1;havoc main_~retValue_acc~5#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 2289#L361 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2304#L354 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 2282#L369 main_#t~ret21#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret21#1;havoc main_#t~ret21#1; 2283#L458 assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 2316#L433 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 2317#L478 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet4#1, test_#t~nondet5#1, test_#t~nondet6#1, test_#t~nondet7#1, test_~splverifierCounter~0#1, test_~tmp~0#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~0#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2258#L75-2 [2021-12-19 19:10:23,324 INFO L793 eck$LassoCheckResult]: Loop: 2258#L75-2 assume !false; 2313#L76 assume test_~splverifierCounter~0#1 < 4; 2314#L77 test_~tmp~0#1 := test_#t~nondet4#1;havoc test_#t~nondet4#1; 2284#L85 assume !(0 != test_~tmp~0#1); 2215#L85-2 test_~tmp___0~0#1 := test_#t~nondet5#1;havoc test_#t~nondet5#1; 2216#L95 assume !(0 != test_~tmp___0~0#1); 2322#L95-2 test_~tmp___2~0#1 := test_#t~nondet6#1;havoc test_#t~nondet6#1; 2392#L105 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 2269#L332 assume { :end_inline_startSystem } true; 2270#L113-2 assume { :begin_inline_timeShift } true; 2298#L150 assume !(0 != ~pumpRunning~0); 2336#L150-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret8#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 2338#L182 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret19#1, isHighWaterLevel_~retValue_acc~2#1, isHighWaterLevel_~tmp~3#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~2#1;havoc isHighWaterLevel_~tmp~3#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~8#1;havoc isHighWaterSensorDry_~retValue_acc~8#1; 2339#L595 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~8#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~8#1; 2368#L600 isHighWaterLevel_#t~ret19#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~3#1 := isHighWaterLevel_#t~ret19#1;havoc isHighWaterLevel_#t~ret19#1; 2369#L302 assume !(0 != isHighWaterLevel_~tmp~3#1);isHighWaterLevel_~tmp___0~1#1 := 1; 2353#L302-2 isHighWaterLevel_~retValue_acc~2#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~2#1; 2236#L308 processEnvironment_#t~ret8#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~1#1 := processEnvironment_#t~ret8#1;havoc processEnvironment_#t~ret8#1; 2237#L186 assume !(0 != processEnvironment_~tmp~1#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2310#L174 assume { :end_inline_processEnvironment__wrappee__base } true; 2358#L182-1 assume { :end_inline_processEnvironment } true; 2250#L157-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret22#1, __utac_acc__Specification2_spec__2_#t~ret23#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 2251#L555-1 __utac_acc__Specification2_spec__2_#t~ret22#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret22#1;havoc __utac_acc__Specification2_spec__2_#t~ret22#1; 2279#L489 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 2241#L489-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 2257#L167 assume { :end_inline_timeShift } true; 2258#L75-2 [2021-12-19 19:10:23,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:10:23,324 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 4 times [2021-12-19 19:10:23,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:10:23,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760142801] [2021-12-19 19:10:23,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:10:23,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:10:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:10:23,335 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:10:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:10:23,341 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:10:23,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:10:23,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1551332837, now seen corresponding path program 1 times [2021-12-19 19:10:23,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:10:23,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443930281] [2021-12-19 19:10:23,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:10:23,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:10:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:10:23,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:10:23,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:10:23,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443930281] [2021-12-19 19:10:23,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443930281] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:10:23,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:10:23,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 19:10:23,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894288667] [2021-12-19 19:10:23,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:10:23,370 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:10:23,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:10:23,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 19:10:23,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 19:10:23,370 INFO L87 Difference]: Start difference. First operand 343 states and 444 transitions. cyclomatic complexity: 104 Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-12-19 19:10:23,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:10:23,429 INFO L93 Difference]: Finished difference Result 1046 states and 1359 transitions. [2021-12-19 19:10:23,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 19:10:23,430 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1046 states and 1359 transitions. [2021-12-19 19:10:23,434 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 782 [2021-12-19 19:10:23,438 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1046 states to 1046 states and 1359 transitions. [2021-12-19 19:10:23,439 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1046 [2021-12-19 19:10:23,439 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1046 [2021-12-19 19:10:23,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1046 states and 1359 transitions. [2021-12-19 19:10:23,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:10:23,445 INFO L681 BuchiCegarLoop]: Abstraction has 1046 states and 1359 transitions. [2021-12-19 19:10:23,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states and 1359 transitions. [2021-12-19 19:10:23,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 361. [2021-12-19 19:10:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 361 states have (on average 1.2797783933518005) internal successors, (462), 360 states have internal predecessors, (462), 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) [2021-12-19 19:10:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 462 transitions. [2021-12-19 19:10:23,451 INFO L704 BuchiCegarLoop]: Abstraction has 361 states and 462 transitions. [2021-12-19 19:10:23,451 INFO L587 BuchiCegarLoop]: Abstraction has 361 states and 462 transitions. [2021-12-19 19:10:23,451 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-19 19:10:23,452 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 361 states and 462 transitions. [2021-12-19 19:10:23,453 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 259 [2021-12-19 19:10:23,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:10:23,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:10:23,454 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:10:23,454 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:10:23,454 INFO L791 eck$LassoCheckResult]: Stem: 3767#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 3689#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret21#1, main_~retValue_acc~5#1, main_~tmp~4#1;havoc main_~retValue_acc~5#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 3690#L361 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 3708#L354 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 3684#L369 main_#t~ret21#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret21#1;havoc main_#t~ret21#1; 3685#L458 assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 3720#L433 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 3721#L478 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet4#1, test_#t~nondet5#1, test_#t~nondet6#1, test_#t~nondet7#1, test_~splverifierCounter~0#1, test_~tmp~0#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~0#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 3781#L75-2 [2021-12-19 19:10:23,454 INFO L793 eck$LassoCheckResult]: Loop: 3781#L75-2 assume !false; 3967#L76 assume test_~splverifierCounter~0#1 < 4; 3728#L77 test_~tmp~0#1 := test_#t~nondet4#1;havoc test_#t~nondet4#1; 3686#L85 assume !(0 != test_~tmp~0#1); 3618#L85-2 test_~tmp___0~0#1 := test_#t~nondet5#1;havoc test_#t~nondet5#1; 3619#L95 assume !(0 != test_~tmp___0~0#1); 3729#L95-2 test_~tmp___2~0#1 := test_#t~nondet6#1;havoc test_#t~nondet6#1; 3654#L105 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 3655#L332 assume { :end_inline_startSystem } true; 3669#L113-2 assume { :begin_inline_timeShift } true; 3700#L150 assume !(0 != ~pumpRunning~0); 3747#L150-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret8#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 3748#L182 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret19#1, isHighWaterLevel_~retValue_acc~2#1, isHighWaterLevel_~tmp~3#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~2#1;havoc isHighWaterLevel_~tmp~3#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~8#1;havoc isHighWaterSensorDry_~retValue_acc~8#1; 3749#L595 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~8#1; 3750#L600 isHighWaterLevel_#t~ret19#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~3#1 := isHighWaterLevel_#t~ret19#1;havoc isHighWaterLevel_#t~ret19#1; 3751#L302 assume 0 != isHighWaterLevel_~tmp~3#1;isHighWaterLevel_~tmp___0~1#1 := 0; 3764#L302-2 isHighWaterLevel_~retValue_acc~2#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~2#1; 3765#L308 processEnvironment_#t~ret8#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~1#1 := processEnvironment_#t~ret8#1;havoc processEnvironment_#t~ret8#1; 3790#L186 assume !(0 != processEnvironment_~tmp~1#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 3791#L174 assume { :end_inline_processEnvironment__wrappee__base } true; 3978#L182-1 assume { :end_inline_processEnvironment } true; 3977#L157-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret22#1, __utac_acc__Specification2_spec__2_#t~ret23#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 3976#L555-1 __utac_acc__Specification2_spec__2_#t~ret22#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret22#1;havoc __utac_acc__Specification2_spec__2_#t~ret22#1; 3973#L489 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 3970#L489-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 3969#L167 assume { :end_inline_timeShift } true; 3781#L75-2 [2021-12-19 19:10:23,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:10:23,455 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 5 times [2021-12-19 19:10:23,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:10:23,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509195240] [2021-12-19 19:10:23,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:10:23,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:10:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:10:23,467 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:10:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:10:23,480 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:10:23,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:10:23,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1437074273, now seen corresponding path program 1 times [2021-12-19 19:10:23,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:10:23,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117882065] [2021-12-19 19:10:23,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:10:23,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:10:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:10:23,490 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:10:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:10:23,502 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:10:23,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:10:23,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2135319818, now seen corresponding path program 1 times [2021-12-19 19:10:23,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:10:23,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845863923] [2021-12-19 19:10:23,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:10:23,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:10:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:10:23,509 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:10:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:10:23,524 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:10:25,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 07:10:25 BoogieIcfgContainer [2021-12-19 19:10:25,933 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 19:10:25,933 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 19:10:25,934 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 19:10:25,934 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 19:10:25,934 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:10:22" (3/4) ... [2021-12-19 19:10:25,936 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-19 19:10:25,992 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-19 19:10:25,992 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 19:10:25,993 INFO L158 Benchmark]: Toolchain (without parser) took 4199.38ms. Allocated memory was 83.9MB in the beginning and 157.3MB in the end (delta: 73.4MB). Free memory was 53.5MB in the beginning and 92.3MB in the end (delta: -38.8MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. [2021-12-19 19:10:25,993 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory was 40.9MB in the beginning and 40.9MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 19:10:25,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.72ms. Allocated memory was 83.9MB in the beginning and 113.2MB in the end (delta: 29.4MB). Free memory was 53.2MB in the beginning and 82.3MB in the end (delta: -29.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 19:10:25,994 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.46ms. Allocated memory is still 113.2MB. Free memory was 82.3MB in the beginning and 79.0MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 19:10:25,995 INFO L158 Benchmark]: Boogie Preprocessor took 37.34ms. Allocated memory is still 113.2MB. Free memory was 79.0MB in the beginning and 76.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 19:10:25,996 INFO L158 Benchmark]: RCFGBuilder took 381.55ms. Allocated memory is still 113.2MB. Free memory was 76.9MB in the beginning and 57.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-19 19:10:25,999 INFO L158 Benchmark]: BuchiAutomizer took 3348.59ms. Allocated memory was 113.2MB in the beginning and 157.3MB in the end (delta: 44.0MB). Free memory was 57.9MB in the beginning and 95.4MB in the end (delta: -37.5MB). Peak memory consumption was 69.4MB. Max. memory is 16.1GB. [2021-12-19 19:10:25,999 INFO L158 Benchmark]: Witness Printer took 58.79ms. Allocated memory is still 157.3MB. Free memory was 95.4MB in the beginning and 92.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-19 19:10:26,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory was 40.9MB in the beginning and 40.9MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.72ms. Allocated memory was 83.9MB in the beginning and 113.2MB in the end (delta: 29.4MB). Free memory was 53.2MB in the beginning and 82.3MB in the end (delta: -29.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.46ms. Allocated memory is still 113.2MB. Free memory was 82.3MB in the beginning and 79.0MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.34ms. Allocated memory is still 113.2MB. Free memory was 79.0MB in the beginning and 76.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 381.55ms. Allocated memory is still 113.2MB. Free memory was 76.9MB in the beginning and 57.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * BuchiAutomizer took 3348.59ms. Allocated memory was 113.2MB in the beginning and 157.3MB in the end (delta: 44.0MB). Free memory was 57.9MB in the beginning and 95.4MB in the end (delta: -37.5MB). Peak memory consumption was 69.4MB. Max. memory is 16.1GB. * Witness Printer took 58.79ms. Allocated memory is still 157.3MB. Free memory was 95.4MB in the beginning and 92.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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 361 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 2.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 1298 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 361 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1146 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1146 mSDsluCounter, 2150 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1251 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 113 IncrementalHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 899 mSDtfsCounter, 113 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown 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: 75]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {splverifierCounter=0, NULL=0, tmp___0=0, head=0, pumpRunning=0, tmp___0=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e62e001=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@b83c7dc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a815857=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@221e72ff=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@720b1087=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6627cf17=29, methaneLevelCritical=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1b55f3b1=0, \result=0, \result=1, \result=1, retValue_acc=1, retValue_acc=1, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3dccb380=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c0493d2=0, tmp___2=29, methAndRunningLastTime=0, tmp=1, tmp=0, cleanupTimeShifts=4, \result=0, tmp=0, head=0, tmp___1=0, NULL=0, waterLevel=1, systemActive=1, \result=0, tmp___0=0, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 75]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L142] int pumpRunning = 0; [L143] int systemActive = 1; [L374] int cleanupTimeShifts = 4; [L472] int methAndRunningLastTime ; [L512] int waterLevel = 1; [L513] int methaneLevelCritical = 0; [L775] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L449] int retValue_acc ; [L450] int tmp ; [L454] FCALL select_helpers() [L455] FCALL select_features() [L456] CALL, EXPR valid_product() [L365] int retValue_acc ; [L368] retValue_acc = 1 [L369] return (retValue_acc); [L456] RET, EXPR valid_product() [L456] tmp = valid_product() [L458] COND TRUE \read(tmp) [L460] FCALL setup() [L461] CALL runTest() [L442] CALL __utac_acc__Specification2_spec__1() [L477] methAndRunningLastTime = 0 [L442] RET __utac_acc__Specification2_spec__1() [L443] CALL test() [L66] int splverifierCounter ; [L67] int tmp ; [L68] int tmp___0 ; [L69] int tmp___1 ; [L70] int tmp___2 ; [L73] splverifierCounter = 0 Loop: [L75] COND TRUE 1 [L77] COND TRUE splverifierCounter < 4 [L83] tmp = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp)) [L93] tmp___0 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___0)) [L103] tmp___2 = __VERIFIER_nondet_int() [L105] COND TRUE \read(tmp___2) [L107] CALL startSystem() [L331] systemActive = 1 [L107] RET startSystem() [L122] CALL timeShift() [L150] COND FALSE !(\read(pumpRunning)) [L157] COND TRUE \read(systemActive) [L159] CALL processEnvironment() [L179] int tmp ; [L182] COND TRUE ! pumpRunning [L184] CALL, EXPR isHighWaterLevel() [L294] int retValue_acc ; [L295] int tmp ; [L296] int tmp___0 ; [L300] CALL, EXPR isHighWaterSensorDry() [L592] int retValue_acc ; [L595] COND TRUE waterLevel < 2 [L596] retValue_acc = 1 [L597] return (retValue_acc); [L300] RET, EXPR isHighWaterSensorDry() [L300] tmp = isHighWaterSensorDry() [L302] COND TRUE \read(tmp) [L303] tmp___0 = 0 [L307] retValue_acc = tmp___0 [L308] return (retValue_acc); [L184] RET, EXPR isHighWaterLevel() [L184] tmp = isHighWaterLevel() [L186] COND FALSE !(\read(tmp)) [L192] FCALL processEnvironment__wrappee__base() [L159] RET processEnvironment() [L165] CALL __utac_acc__Specification2_spec__2() [L482] int tmp ; [L483] int tmp___0 ; [L487] CALL, EXPR isMethaneLevelCritical() [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); [L487] RET, EXPR isMethaneLevelCritical() [L487] tmp = isMethaneLevelCritical() [L489] COND FALSE !(\read(tmp)) [L505] methAndRunningLastTime = 0 [L165] RET __utac_acc__Specification2_spec__2() [L122] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-19 19:10:26,038 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)