./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product56.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3a877d22 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_product56.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 fa0eab3945757815cbe114f72b31b9c97b3f41e20a7d5f245c817ae82afdf9aa --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 17:18:22,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 17:18:22,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 17:18:22,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 17:18:22,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 17:18:22,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 17:18:22,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 17:18:22,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 17:18:22,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 17:18:22,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 17:18:22,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 17:18:22,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 17:18:22,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 17:18:22,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 17:18:22,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 17:18:22,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 17:18:22,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 17:18:22,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 17:18:22,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 17:18:22,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 17:18:22,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 17:18:22,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 17:18:22,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 17:18:22,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 17:18:22,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 17:18:22,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 17:18:22,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 17:18:22,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 17:18:22,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 17:18:22,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 17:18:22,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 17:18:22,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 17:18:22,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 17:18:22,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 17:18:22,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 17:18:22,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 17:18:22,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 17:18:22,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 17:18:22,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 17:18:22,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 17:18:22,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 17:18:22,215 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-15 17:18:22,239 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 17:18:22,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 17:18:22,240 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 17:18:22,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 17:18:22,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 17:18:22,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 17:18:22,242 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 17:18:22,242 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 17:18:22,242 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 17:18:22,242 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 17:18:22,243 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 17:18:22,243 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 17:18:22,243 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 17:18:22,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 17:18:22,244 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 17:18:22,244 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 17:18:22,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 17:18:22,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 17:18:22,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 17:18:22,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 17:18:22,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 17:18:22,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 17:18:22,245 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 17:18:22,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 17:18:22,245 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 17:18:22,245 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 17:18:22,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 17:18:22,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 17:18:22,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 17:18:22,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 17:18:22,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 17:18:22,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 17:18:22,247 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 17:18:22,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa0eab3945757815cbe114f72b31b9c97b3f41e20a7d5f245c817ae82afdf9aa [2021-12-15 17:18:22,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 17:18:22,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 17:18:22,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 17:18:22,472 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 17:18:22,472 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 17:18:22,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product56.cil.c [2021-12-15 17:18:22,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/034f7f938/aef1afa4efec425e8ca6fa85ee7fc5a7/FLAGd6dae749f [2021-12-15 17:18:22,911 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 17:18:22,911 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product56.cil.c [2021-12-15 17:18:22,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/034f7f938/aef1afa4efec425e8ca6fa85ee7fc5a7/FLAGd6dae749f [2021-12-15 17:18:22,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/034f7f938/aef1afa4efec425e8ca6fa85ee7fc5a7 [2021-12-15 17:18:22,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 17:18:22,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 17:18:22,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 17:18:22,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 17:18:22,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 17:18:22,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:18:22" (1/1) ... [2021-12-15 17:18:22,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30bcef98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:22, skipping insertion in model container [2021-12-15 17:18:22,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:18:22" (1/1) ... [2021-12-15 17:18:22,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 17:18:22,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 17:18:23,149 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_product56.cil.c[11292,11305] [2021-12-15 17:18:23,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:18:23,188 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 17:18:23,224 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_product56.cil.c[11292,11305] [2021-12-15 17:18:23,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:18:23,263 INFO L208 MainTranslator]: Completed translation [2021-12-15 17:18:23,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:23 WrapperNode [2021-12-15 17:18:23,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 17:18:23,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 17:18:23,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 17:18:23,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 17:18:23,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:23" (1/1) ... [2021-12-15 17:18:23,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:23" (1/1) ... [2021-12-15 17:18:23,332 INFO L137 Inliner]: procedures = 59, calls = 162, calls flagged for inlining = 59, calls inlined = 141, statements flattened = 1027 [2021-12-15 17:18:23,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 17:18:23,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 17:18:23,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 17:18:23,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 17:18:23,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:23" (1/1) ... [2021-12-15 17:18:23,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:23" (1/1) ... [2021-12-15 17:18:23,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:23" (1/1) ... [2021-12-15 17:18:23,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:23" (1/1) ... [2021-12-15 17:18:23,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:23" (1/1) ... [2021-12-15 17:18:23,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:23" (1/1) ... [2021-12-15 17:18:23,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:23" (1/1) ... [2021-12-15 17:18:23,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 17:18:23,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 17:18:23,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 17:18:23,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 17:18:23,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:23" (1/1) ... [2021-12-15 17:18:23,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:18:23,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:18:23,441 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) [2021-12-15 17:18:23,449 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 [2021-12-15 17:18:23,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 17:18:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 17:18:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 17:18:23,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 17:18:23,543 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 17:18:23,545 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 17:18:24,016 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 17:18:24,024 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 17:18:24,031 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 17:18:24,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:18:24 BoogieIcfgContainer [2021-12-15 17:18:24,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 17:18:24,035 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 17:18:24,036 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 17:18:24,038 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 17:18:24,039 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:18:24,040 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 05:18:22" (1/3) ... [2021-12-15 17:18:24,040 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50e8664b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:18:24, skipping insertion in model container [2021-12-15 17:18:24,040 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:18:24,041 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:23" (2/3) ... [2021-12-15 17:18:24,041 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50e8664b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:18:24, skipping insertion in model container [2021-12-15 17:18:24,041 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:18:24,041 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:18:24" (3/3) ... [2021-12-15 17:18:24,042 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product56.cil.c [2021-12-15 17:18:24,077 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 17:18:24,077 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 17:18:24,077 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 17:18:24,077 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 17:18:24,077 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 17:18:24,078 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 17:18:24,078 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 17:18:24,078 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 17:18:24,099 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 279 states, 278 states have (on average 1.3741007194244603) internal successors, (382), 278 states have internal predecessors, (382), 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) [2021-12-15 17:18:24,127 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 183 [2021-12-15 17:18:24,128 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:18:24,128 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:18:24,135 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:24,135 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:24,135 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 17:18:24,136 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 279 states, 278 states have (on average 1.3741007194244603) internal successors, (382), 278 states have internal predecessors, (382), 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) [2021-12-15 17:18:24,150 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 183 [2021-12-15 17:18:24,150 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:18:24,151 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:18:24,151 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:24,151 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:24,155 INFO L791 eck$LassoCheckResult]: Stem: 265#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(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 183#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret53#1, main_~retValue_acc~13#1, main_~tmp~10#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~10#1;assume { :begin_inline_select_helpers } true; 253#L923true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 264#L916true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~12#1;havoc valid_product_~retValue_acc~12#1;valid_product_~retValue_acc~12#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~12#1; 6#L931true main_#t~ret53#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~10#1 := main_#t~ret53#1;havoc main_#t~ret53#1; 222#L1019true assume 0 != main_~tmp~10#1;assume { :begin_inline_setup } true; 252#L995true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 56#L543true assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet48#1, test_#t~nondet49#1, test_#t~nondet50#1, test_#t~nondet51#1, test_~splverifierCounter~0#1, test_~tmp~9#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~9#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 70#L839-2true [2021-12-15 17:18:24,155 INFO L793 eck$LassoCheckResult]: Loop: 70#L839-2true assume !false; 115#L840true assume test_~splverifierCounter~0#1 < 4; 217#L841true test_~tmp~9#1 := test_#t~nondet48#1;havoc test_#t~nondet48#1; 141#L849true assume !(0 != test_~tmp~9#1); 30#L849-2true test_~tmp___0~3#1 := test_#t~nondet49#1;havoc test_#t~nondet49#1; 131#L859true assume !(0 != test_~tmp___0~3#1); 204#L859-2true test_~tmp___2~0#1 := test_#t~nondet50#1;havoc test_#t~nondet50#1; 61#L869true assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 245#L824true assume { :end_inline_startSystem } true; 194#L877-2true assume { :begin_inline_timeShift } true; 160#L589true assume !(0 != ~pumpRunning~0); 273#L589-2true assume !(0 != ~systemActive~0); 233#L596-1true assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret32#1, __utac_acc__Specification2_spec__2_#t~ret33#1, __utac_acc__Specification2_spec__2_~tmp~3#1, __utac_acc__Specification2_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification2_spec__2_~tmp~3#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 46#L476-1true __utac_acc__Specification2_spec__2_#t~ret32#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~3#1 := __utac_acc__Specification2_spec__2_#t~ret32#1;havoc __utac_acc__Specification2_spec__2_#t~ret32#1; 281#L554true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~3#1);~methAndRunningLastTime~0 := 0; 156#L554-1true assume { :end_inline___utac_acc__Specification2_spec__2 } true; 167#L606true assume { :end_inline_timeShift } true; 70#L839-2true [2021-12-15 17:18:24,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:24,159 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 1 times [2021-12-15 17:18:24,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:24,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320541214] [2021-12-15 17:18:24,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:24,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:24,278 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:24,328 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:24,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:24,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1637638967, now seen corresponding path program 1 times [2021-12-15 17:18:24,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:24,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037422662] [2021-12-15 17:18:24,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:24,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:18:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:18:24,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:18:24,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037422662] [2021-12-15 17:18:24,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037422662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:18:24,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:18:24,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 17:18:24,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77159916] [2021-12-15 17:18:24,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:18:24,419 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:18:24,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:18:24,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 17:18:24,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 17:18:24,445 INFO L87 Difference]: Start difference. First operand has 279 states, 278 states have (on average 1.3741007194244603) internal successors, (382), 278 states have internal predecessors, (382), 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) [2021-12-15 17:18:24,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:18:24,524 INFO L93 Difference]: Finished difference Result 542 states and 730 transitions. [2021-12-15 17:18:24,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 17:18:24,529 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 542 states and 730 transitions. [2021-12-15 17:18:24,537 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 356 [2021-12-15 17:18:24,547 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 542 states to 522 states and 709 transitions. [2021-12-15 17:18:24,548 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 522 [2021-12-15 17:18:24,549 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 522 [2021-12-15 17:18:24,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 522 states and 709 transitions. [2021-12-15 17:18:24,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:18:24,552 INFO L681 BuchiCegarLoop]: Abstraction has 522 states and 709 transitions. [2021-12-15 17:18:24,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states and 709 transitions. [2021-12-15 17:18:24,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 519. [2021-12-15 17:18:24,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 519 states have (on average 1.3583815028901733) internal successors, (705), 518 states have internal predecessors, (705), 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) [2021-12-15 17:18:24,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 705 transitions. [2021-12-15 17:18:24,616 INFO L704 BuchiCegarLoop]: Abstraction has 519 states and 705 transitions. [2021-12-15 17:18:24,616 INFO L587 BuchiCegarLoop]: Abstraction has 519 states and 705 transitions. [2021-12-15 17:18:24,616 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-15 17:18:24,616 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 519 states and 705 transitions. [2021-12-15 17:18:24,620 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 353 [2021-12-15 17:18:24,621 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:18:24,621 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:18:24,624 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:24,624 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] [2021-12-15 17:18:24,624 INFO L791 eck$LassoCheckResult]: Stem: 1130#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(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 1085#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret53#1, main_~retValue_acc~13#1, main_~tmp~10#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~10#1;assume { :begin_inline_select_helpers } true; 1086#L923 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1125#L916 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~12#1;havoc valid_product_~retValue_acc~12#1;valid_product_~retValue_acc~12#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~12#1; 837#L931 main_#t~ret53#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~10#1 := main_#t~ret53#1;havoc main_#t~ret53#1; 838#L1019 assume 0 != main_~tmp~10#1;assume { :begin_inline_setup } true; 1107#L995 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 929#L543 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet48#1, test_#t~nondet49#1, test_#t~nondet50#1, test_#t~nondet51#1, test_~splverifierCounter~0#1, test_~tmp~9#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~9#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 930#L839-2 [2021-12-15 17:18:24,625 INFO L793 eck$LassoCheckResult]: Loop: 930#L839-2 assume !false; 957#L840 assume test_~splverifierCounter~0#1 < 4; 1018#L841 test_~tmp~9#1 := test_#t~nondet48#1;havoc test_#t~nondet48#1; 1201#L849 assume !(0 != test_~tmp~9#1); 1198#L849-2 test_~tmp___0~3#1 := test_#t~nondet49#1;havoc test_#t~nondet49#1; 1195#L859 assume !(0 != test_~tmp___0~3#1); 1192#L859-2 test_~tmp___2~0#1 := test_#t~nondet50#1;havoc test_#t~nondet50#1; 1182#L869 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; 1175#L877 assume !(0 != test_~tmp___1~0#1); 1121#L877-2 assume { :begin_inline_timeShift } true; 1172#L589 assume !(0 != ~pumpRunning~0); 1168#L589-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret36#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 1164#L673 assume 0 != ~pumpRunning~0;assume { :begin_inline_isMethaneAlarm } true;havoc isMethaneAlarm_#res#1;havoc isMethaneAlarm_#t~ret37#1, isMethaneAlarm_~retValue_acc~7#1;havoc isMethaneAlarm_~retValue_acc~7#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 1160#L476 isMethaneAlarm_#t~ret37#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;isMethaneAlarm_~retValue_acc~7#1 := isMethaneAlarm_#t~ret37#1;havoc isMethaneAlarm_#t~ret37#1;isMethaneAlarm_#res#1 := isMethaneAlarm_~retValue_acc~7#1; 1155#L717 processEnvironment_#t~ret36#1 := isMethaneAlarm_#res#1;assume { :end_inline_isMethaneAlarm } true;processEnvironment_~tmp~6#1 := processEnvironment_#t~ret36#1;havoc processEnvironment_#t~ret36#1; 1152#L677 assume 0 != processEnvironment_~tmp~6#1;assume { :begin_inline_deactivatePump } true;~pumpRunning~0 := 0; 1149#L707-1 assume { :end_inline_deactivatePump } true; 1148#L673-1 assume { :end_inline_processEnvironment } true; 1147#L596-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret32#1, __utac_acc__Specification2_spec__2_#t~ret33#1, __utac_acc__Specification2_spec__2_~tmp~3#1, __utac_acc__Specification2_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification2_spec__2_~tmp~3#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 1146#L476-1 __utac_acc__Specification2_spec__2_#t~ret32#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~3#1 := __utac_acc__Specification2_spec__2_#t~ret32#1;havoc __utac_acc__Specification2_spec__2_#t~ret32#1; 1134#L554 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~3#1);~methAndRunningLastTime~0 := 0; 1047#L554-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 1061#L606 assume { :end_inline_timeShift } true; 930#L839-2 [2021-12-15 17:18:24,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:24,625 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 2 times [2021-12-15 17:18:24,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:24,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637981143] [2021-12-15 17:18:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:24,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:24,641 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:24,656 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:24,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:24,657 INFO L85 PathProgramCache]: Analyzing trace with hash -92248384, now seen corresponding path program 1 times [2021-12-15 17:18:24,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:24,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743417900] [2021-12-15 17:18:24,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:24,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:18:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:18:24,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:18:24,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743417900] [2021-12-15 17:18:24,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743417900] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:18:24,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:18:24,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 17:18:24,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962796123] [2021-12-15 17:18:24,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:18:24,696 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:18:24,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:18:24,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 17:18:24,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 17:18:24,696 INFO L87 Difference]: Start difference. First operand 519 states and 705 transitions. cyclomatic complexity: 189 Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-12-15 17:18:24,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:18:24,788 INFO L93 Difference]: Finished difference Result 547 states and 708 transitions. [2021-12-15 17:18:24,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 17:18:24,789 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 547 states and 708 transitions. [2021-12-15 17:18:24,793 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 383 [2021-12-15 17:18:24,797 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 547 states to 547 states and 708 transitions. [2021-12-15 17:18:24,798 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 547 [2021-12-15 17:18:24,799 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 547 [2021-12-15 17:18:24,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 547 states and 708 transitions. [2021-12-15 17:18:24,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:18:24,805 INFO L681 BuchiCegarLoop]: Abstraction has 547 states and 708 transitions. [2021-12-15 17:18:24,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states and 708 transitions. [2021-12-15 17:18:24,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 547. [2021-12-15 17:18:24,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 547 states have (on average 1.2943327239488116) internal successors, (708), 546 states have internal predecessors, (708), 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) [2021-12-15 17:18:24,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 708 transitions. [2021-12-15 17:18:24,829 INFO L704 BuchiCegarLoop]: Abstraction has 547 states and 708 transitions. [2021-12-15 17:18:24,830 INFO L587 BuchiCegarLoop]: Abstraction has 547 states and 708 transitions. [2021-12-15 17:18:24,830 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-15 17:18:24,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 547 states and 708 transitions. [2021-12-15 17:18:24,832 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 383 [2021-12-15 17:18:24,833 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:18:24,833 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:18:24,834 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:24,834 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, 1, 1, 1, 1] [2021-12-15 17:18:24,834 INFO L791 eck$LassoCheckResult]: Stem: 2170#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(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 2121#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret53#1, main_~retValue_acc~13#1, main_~tmp~10#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~10#1;assume { :begin_inline_select_helpers } true; 2122#L923 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2167#L916 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~12#1;havoc valid_product_~retValue_acc~12#1;valid_product_~retValue_acc~12#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~12#1; 1906#L931 main_#t~ret53#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~10#1 := main_#t~ret53#1;havoc main_#t~ret53#1; 1907#L1019 assume 0 != main_~tmp~10#1;assume { :begin_inline_setup } true; 2146#L995 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 1983#L543 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet48#1, test_#t~nondet49#1, test_#t~nondet50#1, test_#t~nondet51#1, test_~splverifierCounter~0#1, test_~tmp~9#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~9#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1984#L839-2 [2021-12-15 17:18:24,839 INFO L793 eck$LassoCheckResult]: Loop: 1984#L839-2 assume !false; 2227#L840 assume test_~splverifierCounter~0#1 < 4; 2226#L841 test_~tmp~9#1 := test_#t~nondet48#1;havoc test_#t~nondet48#1; 2225#L849 assume !(0 != test_~tmp~9#1); 2224#L849-2 test_~tmp___0~3#1 := test_#t~nondet49#1;havoc test_#t~nondet49#1; 2223#L859 assume !(0 != test_~tmp___0~3#1); 2139#L859-2 test_~tmp___2~0#1 := test_#t~nondet50#1;havoc test_#t~nondet50#1; 2140#L869 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 1992#L824 assume { :end_inline_startSystem } true; 1934#L877-2 assume { :begin_inline_timeShift } true; 2107#L589 assume !(0 != ~pumpRunning~0); 2108#L589-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret36#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 2172#L673 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__lowWaterSensor } true;havoc processEnvironment__wrappee__lowWaterSensor_#t~ret35#1, processEnvironment__wrappee__lowWaterSensor_~tmp~5#1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~5#1; 2209#L647-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1, processEnvironment__wrappee__highWaterSensor_~tmp~4#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4#1; 2257#L621-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret46#1, isHighWaterLevel_~retValue_acc~9#1, isHighWaterLevel_~tmp~7#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~9#1;havoc isHighWaterLevel_~tmp~7#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~5#1;havoc isHighWaterSensorDry_~retValue_acc~5#1; 2256#L516-3 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~5#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~5#1; 2255#L521-3 isHighWaterLevel_#t~ret46#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~7#1 := isHighWaterLevel_#t~ret46#1;havoc isHighWaterLevel_#t~ret46#1; 2150#L775-9 assume 0 != isHighWaterLevel_~tmp~7#1;isHighWaterLevel_~tmp___0~1#1 := 0; 1938#L775-11 isHighWaterLevel_~retValue_acc~9#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~9#1; 1939#L781-3 processEnvironment__wrappee__highWaterSensor_#t~ret34#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~4#1 := processEnvironment__wrappee__highWaterSensor_#t~ret34#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1; 2145#L625-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2136#L613-6 assume { :end_inline_processEnvironment__wrappee__base } true; 2137#L621-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 2290#L647-3 assume { :end_inline_processEnvironment__wrappee__lowWaterSensor } true; 2016#L673-1 assume { :end_inline_processEnvironment } true; 2216#L596-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret32#1, __utac_acc__Specification2_spec__2_#t~ret33#1, __utac_acc__Specification2_spec__2_~tmp~3#1, __utac_acc__Specification2_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification2_spec__2_~tmp~3#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 2217#L476-1 __utac_acc__Specification2_spec__2_#t~ret32#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~3#1 := __utac_acc__Specification2_spec__2_#t~ret32#1;havoc __utac_acc__Specification2_spec__2_#t~ret32#1; 2232#L554 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~3#1);~methAndRunningLastTime~0 := 0; 2229#L554-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 2228#L606 assume { :end_inline_timeShift } true; 1984#L839-2 [2021-12-15 17:18:24,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:24,840 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 3 times [2021-12-15 17:18:24,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:24,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937916193] [2021-12-15 17:18:24,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:24,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:24,862 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:24,874 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:24,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:24,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1804041310, now seen corresponding path program 1 times [2021-12-15 17:18:24,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:24,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145844586] [2021-12-15 17:18:24,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:24,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:18:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:18:24,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:18:24,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145844586] [2021-12-15 17:18:24,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145844586] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:18:24,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:18:24,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 17:18:24,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857299723] [2021-12-15 17:18:24,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:18:24,912 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:18:24,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:18:24,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 17:18:24,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 17:18:24,913 INFO L87 Difference]: Start difference. First operand 547 states and 708 transitions. cyclomatic complexity: 164 Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2021-12-15 17:18:25,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:18:25,088 INFO L93 Difference]: Finished difference Result 1553 states and 1964 transitions. [2021-12-15 17:18:25,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 17:18:25,091 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1553 states and 1964 transitions. [2021-12-15 17:18:25,098 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 1101 [2021-12-15 17:18:25,103 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1553 states to 1553 states and 1964 transitions. [2021-12-15 17:18:25,104 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1553 [2021-12-15 17:18:25,105 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1553 [2021-12-15 17:18:25,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1553 states and 1964 transitions. [2021-12-15 17:18:25,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:18:25,106 INFO L681 BuchiCegarLoop]: Abstraction has 1553 states and 1964 transitions. [2021-12-15 17:18:25,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states and 1964 transitions. [2021-12-15 17:18:25,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 583. [2021-12-15 17:18:25,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 583 states have (on average 1.2761578044596913) internal successors, (744), 582 states have internal predecessors, (744), 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) [2021-12-15 17:18:25,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 744 transitions. [2021-12-15 17:18:25,119 INFO L704 BuchiCegarLoop]: Abstraction has 583 states and 744 transitions. [2021-12-15 17:18:25,119 INFO L587 BuchiCegarLoop]: Abstraction has 583 states and 744 transitions. [2021-12-15 17:18:25,119 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-15 17:18:25,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 583 states and 744 transitions. [2021-12-15 17:18:25,121 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 407 [2021-12-15 17:18:25,122 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:18:25,122 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:18:25,123 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:25,123 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, 1, 1, 1, 1] [2021-12-15 17:18:25,123 INFO L791 eck$LassoCheckResult]: Stem: 4296#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(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 4244#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret53#1, main_~retValue_acc~13#1, main_~tmp~10#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~10#1;assume { :begin_inline_select_helpers } true; 4245#L923 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 4293#L916 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~12#1;havoc valid_product_~retValue_acc~12#1;valid_product_~retValue_acc~12#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~12#1; 4016#L931 main_#t~ret53#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~10#1 := main_#t~ret53#1;havoc main_#t~ret53#1; 4017#L1019 assume 0 != main_~tmp~10#1;assume { :begin_inline_setup } true; 4270#L995 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 4093#L543 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet48#1, test_#t~nondet49#1, test_#t~nondet50#1, test_#t~nondet51#1, test_~splverifierCounter~0#1, test_~tmp~9#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~9#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 4094#L839-2 [2021-12-15 17:18:25,123 INFO L793 eck$LassoCheckResult]: Loop: 4094#L839-2 assume !false; 4329#L840 assume test_~splverifierCounter~0#1 < 4; 4330#L841 test_~tmp~9#1 := test_#t~nondet48#1;havoc test_#t~nondet48#1; 4323#L849 assume !(0 != test_~tmp~9#1); 4322#L849-2 test_~tmp___0~3#1 := test_#t~nondet49#1;havoc test_#t~nondet49#1; 4315#L859 assume !(0 != test_~tmp___0~3#1); 4314#L859-2 test_~tmp___2~0#1 := test_#t~nondet50#1;havoc test_#t~nondet50#1; 4354#L869 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 4103#L824 assume { :end_inline_startSystem } true; 4045#L877-2 assume { :begin_inline_timeShift } true; 4226#L589 assume !(0 != ~pumpRunning~0); 4227#L589-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret36#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 4401#L673 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__lowWaterSensor } true;havoc processEnvironment__wrappee__lowWaterSensor_#t~ret35#1, processEnvironment__wrappee__lowWaterSensor_~tmp~5#1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~5#1; 4396#L647-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1, processEnvironment__wrappee__highWaterSensor_~tmp~4#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4#1; 4394#L621-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret46#1, isHighWaterLevel_~retValue_acc~9#1, isHighWaterLevel_~tmp~7#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~9#1;havoc isHighWaterLevel_~tmp~7#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~5#1;havoc isHighWaterSensorDry_~retValue_acc~5#1; 4153#L516-3 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~5#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~5#1; 4154#L521-3 isHighWaterLevel_#t~ret46#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~7#1 := isHighWaterLevel_#t~ret46#1;havoc isHighWaterLevel_#t~ret46#1; 4275#L775-9 assume !(0 != isHighWaterLevel_~tmp~7#1);isHighWaterLevel_~tmp___0~1#1 := 1; 4049#L775-11 isHighWaterLevel_~retValue_acc~9#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~9#1; 4050#L781-3 processEnvironment__wrappee__highWaterSensor_#t~ret34#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~4#1 := processEnvironment__wrappee__highWaterSensor_#t~ret34#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1; 4054#L625-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 4055#L613-6 assume { :end_inline_processEnvironment__wrappee__base } true; 4381#L621-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 4379#L647-3 assume { :end_inline_processEnvironment__wrappee__lowWaterSensor } true; 4376#L673-1 assume { :end_inline_processEnvironment } true; 4345#L596-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret32#1, __utac_acc__Specification2_spec__2_#t~ret33#1, __utac_acc__Specification2_spec__2_~tmp~3#1, __utac_acc__Specification2_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification2_spec__2_~tmp~3#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 4346#L476-1 __utac_acc__Specification2_spec__2_#t~ret32#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~3#1 := __utac_acc__Specification2_spec__2_#t~ret32#1;havoc __utac_acc__Specification2_spec__2_#t~ret32#1; 4339#L554 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~3#1);~methAndRunningLastTime~0 := 0; 4337#L554-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 4333#L606 assume { :end_inline_timeShift } true; 4094#L839-2 [2021-12-15 17:18:25,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:25,124 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 4 times [2021-12-15 17:18:25,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:25,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889580339] [2021-12-15 17:18:25,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:25,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:25,135 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:25,144 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:25,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:25,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1904119972, now seen corresponding path program 1 times [2021-12-15 17:18:25,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:25,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864639775] [2021-12-15 17:18:25,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:25,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:18:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:18:25,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:18:25,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864639775] [2021-12-15 17:18:25,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864639775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:18:25,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:18:25,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:18:25,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918290996] [2021-12-15 17:18:25,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:18:25,188 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:18:25,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:18:25,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 17:18:25,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 17:18:25,188 INFO L87 Difference]: Start difference. First operand 583 states and 744 transitions. cyclomatic complexity: 164 Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2021-12-15 17:18:25,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:18:25,342 INFO L93 Difference]: Finished difference Result 1355 states and 1724 transitions. [2021-12-15 17:18:25,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 17:18:25,345 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1355 states and 1724 transitions. [2021-12-15 17:18:25,373 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 969 [2021-12-15 17:18:25,379 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1355 states to 1355 states and 1724 transitions. [2021-12-15 17:18:25,380 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1355 [2021-12-15 17:18:25,381 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1355 [2021-12-15 17:18:25,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1355 states and 1724 transitions. [2021-12-15 17:18:25,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:18:25,388 INFO L681 BuchiCegarLoop]: Abstraction has 1355 states and 1724 transitions. [2021-12-15 17:18:25,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states and 1724 transitions. [2021-12-15 17:18:25,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 637. [2021-12-15 17:18:25,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 637 states have (on average 1.2527472527472527) internal successors, (798), 636 states have internal predecessors, (798), 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) [2021-12-15 17:18:25,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 798 transitions. [2021-12-15 17:18:25,405 INFO L704 BuchiCegarLoop]: Abstraction has 637 states and 798 transitions. [2021-12-15 17:18:25,405 INFO L587 BuchiCegarLoop]: Abstraction has 637 states and 798 transitions. [2021-12-15 17:18:25,405 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-15 17:18:25,405 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 637 states and 798 transitions. [2021-12-15 17:18:25,408 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 443 [2021-12-15 17:18:25,408 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:18:25,408 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:18:25,410 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:25,410 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, 1, 1, 1, 1] [2021-12-15 17:18:25,410 INFO L791 eck$LassoCheckResult]: Stem: 6289#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(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 6211#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret53#1, main_~retValue_acc~13#1, main_~tmp~10#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~10#1;assume { :begin_inline_select_helpers } true; 6212#L923 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 6282#L916 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~12#1;havoc valid_product_~retValue_acc~12#1;valid_product_~retValue_acc~12#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~12#1; 5968#L931 main_#t~ret53#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~10#1 := main_#t~ret53#1;havoc main_#t~ret53#1; 5969#L1019 assume 0 != main_~tmp~10#1;assume { :begin_inline_setup } true; 6248#L995 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 6046#L543 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet48#1, test_#t~nondet49#1, test_#t~nondet50#1, test_#t~nondet51#1, test_~splverifierCounter~0#1, test_~tmp~9#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~9#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 6047#L839-2 [2021-12-15 17:18:25,411 INFO L793 eck$LassoCheckResult]: Loop: 6047#L839-2 assume !false; 6072#L840 assume test_~splverifierCounter~0#1 < 4; 6135#L841 test_~tmp~9#1 := test_#t~nondet48#1;havoc test_#t~nondet48#1; 6241#L849 assume !(0 != test_~tmp~9#1); 6410#L849-2 test_~tmp___0~3#1 := test_#t~nondet49#1;havoc test_#t~nondet49#1; 6402#L859 assume !(0 != test_~tmp___0~3#1); 6401#L859-2 test_~tmp___2~0#1 := test_#t~nondet50#1;havoc test_#t~nondet50#1; 6393#L869 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 6277#L824 assume { :end_inline_startSystem } true; 6278#L877-2 assume { :begin_inline_timeShift } true; 6187#L589 assume !(0 != ~pumpRunning~0); 6188#L589-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret36#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 6205#L673 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__lowWaterSensor } true;havoc processEnvironment__wrappee__lowWaterSensor_#t~ret35#1, processEnvironment__wrappee__lowWaterSensor_~tmp~5#1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~5#1; 6124#L647-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1, processEnvironment__wrappee__highWaterSensor_~tmp~4#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4#1; 6125#L621-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret46#1, isHighWaterLevel_~retValue_acc~9#1, isHighWaterLevel_~tmp~7#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~9#1;havoc isHighWaterLevel_~tmp~7#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~5#1;havoc isHighWaterSensorDry_~retValue_acc~5#1; 6107#L516-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~5#1; 6109#L521-3 isHighWaterLevel_#t~ret46#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~7#1 := isHighWaterLevel_#t~ret46#1;havoc isHighWaterLevel_#t~ret46#1; 6342#L775-9 assume 0 != isHighWaterLevel_~tmp~7#1;isHighWaterLevel_~tmp___0~1#1 := 0; 6343#L775-11 isHighWaterLevel_~retValue_acc~9#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~9#1; 6318#L781-3 processEnvironment__wrappee__highWaterSensor_#t~ret34#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~4#1 := processEnvironment__wrappee__highWaterSensor_#t~ret34#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1; 6319#L625-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 6462#L613-6 assume { :end_inline_processEnvironment__wrappee__base } true; 6502#L621-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 6503#L647-3 assume { :end_inline_processEnvironment__wrappee__lowWaterSensor } true; 6589#L673-1 assume { :end_inline_processEnvironment } true; 6588#L596-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret32#1, __utac_acc__Specification2_spec__2_#t~ret33#1, __utac_acc__Specification2_spec__2_~tmp~3#1, __utac_acc__Specification2_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification2_spec__2_~tmp~3#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 6031#L476-1 __utac_acc__Specification2_spec__2_#t~ret32#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~3#1 := __utac_acc__Specification2_spec__2_#t~ret32#1;havoc __utac_acc__Specification2_spec__2_#t~ret32#1; 6032#L554 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~3#1);~methAndRunningLastTime~0 := 0; 6168#L554-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 6181#L606 assume { :end_inline_timeShift } true; 6047#L839-2 [2021-12-15 17:18:25,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:25,411 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 5 times [2021-12-15 17:18:25,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:25,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663811949] [2021-12-15 17:18:25,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:25,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:25,427 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:25,449 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:25,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:25,450 INFO L85 PathProgramCache]: Analyzing trace with hash -524177632, now seen corresponding path program 1 times [2021-12-15 17:18:25,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:25,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888981454] [2021-12-15 17:18:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:25,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:25,455 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:25,463 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:25,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:25,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1804932169, now seen corresponding path program 1 times [2021-12-15 17:18:25,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:25,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179335873] [2021-12-15 17:18:25,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:25,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:25,477 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:25,488 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:25,710 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:548) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLoopTermination(LassoCheck.java:944) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:855) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 17:18:25,713 INFO L158 Benchmark]: Toolchain (without parser) took 2771.65ms. Allocated memory was 77.6MB in the beginning and 148.9MB in the end (delta: 71.3MB). Free memory was 45.1MB in the beginning and 82.6MB in the end (delta: -37.6MB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. [2021-12-15 17:18:25,714 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 77.6MB. Free memory was 37.0MB in the beginning and 37.0MB in the end (delta: 41.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:18:25,714 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.91ms. Allocated memory was 77.6MB in the beginning and 96.5MB in the end (delta: 18.9MB). Free memory was 44.9MB in the beginning and 65.8MB in the end (delta: -20.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 17:18:25,715 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.73ms. Allocated memory is still 96.5MB. Free memory was 65.8MB in the beginning and 61.2MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 17:18:25,715 INFO L158 Benchmark]: Boogie Preprocessor took 47.98ms. Allocated memory is still 96.5MB. Free memory was 61.2MB in the beginning and 58.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 17:18:25,715 INFO L158 Benchmark]: RCFGBuilder took 649.69ms. Allocated memory is still 96.5MB. Free memory was 58.0MB in the beginning and 69.4MB in the end (delta: -11.4MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2021-12-15 17:18:25,716 INFO L158 Benchmark]: BuchiAutomizer took 1676.72ms. Allocated memory was 96.5MB in the beginning and 148.9MB in the end (delta: 52.4MB). Free memory was 69.0MB in the beginning and 82.6MB in the end (delta: -13.7MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. [2021-12-15 17:18:25,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 77.6MB. Free memory was 37.0MB in the beginning and 37.0MB in the end (delta: 41.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.91ms. Allocated memory was 77.6MB in the beginning and 96.5MB in the end (delta: 18.9MB). Free memory was 44.9MB in the beginning and 65.8MB in the end (delta: -20.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.73ms. Allocated memory is still 96.5MB. Free memory was 65.8MB in the beginning and 61.2MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.98ms. Allocated memory is still 96.5MB. Free memory was 61.2MB in the beginning and 58.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 649.69ms. Allocated memory is still 96.5MB. Free memory was 58.0MB in the beginning and 69.4MB in the end (delta: -11.4MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 1676.72ms. Allocated memory was 96.5MB in the beginning and 148.9MB in the end (delta: 52.4MB). Free memory was 69.0MB in the beginning and 82.6MB in the end (delta: -13.7MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 17:18:25,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable