./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product48.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_product48.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 797436b26f0180d1dd4048b2036765c1f76ffc9f34d72e35837e9efcc5780486 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 17:18:18,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 17:18:18,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 17:18:18,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 17:18:18,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 17:18:18,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 17:18:18,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 17:18:18,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 17:18:18,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 17:18:18,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 17:18:18,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 17:18:18,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 17:18:18,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 17:18:18,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 17:18:18,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 17:18:18,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 17:18:18,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 17:18:18,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 17:18:18,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 17:18:18,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 17:18:18,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 17:18:18,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 17:18:18,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 17:18:18,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 17:18:18,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 17:18:18,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 17:18:18,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 17:18:18,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 17:18:18,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 17:18:18,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 17:18:18,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 17:18:18,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 17:18:18,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 17:18:18,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 17:18:18,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 17:18:18,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 17:18:18,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 17:18:18,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 17:18:18,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 17:18:18,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 17:18:18,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 17:18:18,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-15 17:18:18,513 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 17:18:18,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 17:18:18,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 17:18:18,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 17:18:18,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 17:18:18,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 17:18:18,516 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 17:18:18,516 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 17:18:18,516 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 17:18:18,516 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 17:18:18,517 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 17:18:18,517 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 17:18:18,517 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 17:18:18,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 17:18:18,517 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 17:18:18,518 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 17:18:18,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 17:18:18,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 17:18:18,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 17:18:18,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 17:18:18,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 17:18:18,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 17:18:18,519 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 17:18:18,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 17:18:18,519 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 17:18:18,519 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 17:18:18,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 17:18:18,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 17:18:18,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 17:18:18,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 17:18:18,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 17:18:18,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 17:18:18,521 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 17:18:18,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 797436b26f0180d1dd4048b2036765c1f76ffc9f34d72e35837e9efcc5780486 [2021-12-15 17:18:18,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 17:18:18,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 17:18:18,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 17:18:18,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 17:18:18,773 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 17:18:18,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c [2021-12-15 17:18:18,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d3bde933/a3f86f058c1f4e098e9e7aee141c40ed/FLAG9c606d9f3 [2021-12-15 17:18:19,200 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 17:18:19,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c [2021-12-15 17:18:19,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d3bde933/a3f86f058c1f4e098e9e7aee141c40ed/FLAG9c606d9f3 [2021-12-15 17:18:19,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d3bde933/a3f86f058c1f4e098e9e7aee141c40ed [2021-12-15 17:18:19,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 17:18:19,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 17:18:19,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 17:18:19,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 17:18:19,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 17:18:19,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:18:19" (1/1) ... [2021-12-15 17:18:19,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a308579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:19, skipping insertion in model container [2021-12-15 17:18:19,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:18:19" (1/1) ... [2021-12-15 17:18:19,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 17:18:19,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 17:18:19,926 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_product48.cil.c[17766,17779] [2021-12-15 17:18:19,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:18:19,940 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 17:18:19,993 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_product48.cil.c[17766,17779] [2021-12-15 17:18:19,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:18:20,010 INFO L208 MainTranslator]: Completed translation [2021-12-15 17:18:20,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20 WrapperNode [2021-12-15 17:18:20,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 17:18:20,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 17:18:20,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 17:18:20,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 17:18:20,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,059 INFO L137 Inliner]: procedures = 57, calls = 159, calls flagged for inlining = 56, calls inlined = 99, statements flattened = 733 [2021-12-15 17:18:20,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 17:18:20,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 17:18:20,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 17:18:20,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 17:18:20,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 17:18:20,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 17:18:20,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 17:18:20,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 17:18:20,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (1/1) ... [2021-12-15 17:18:20,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:18:20,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:18:20,118 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 17:18:20,120 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 17:18:20,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 17:18:20,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 17:18:20,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 17:18:20,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 17:18:20,216 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 17:18:20,217 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 17:18:20,545 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 17:18:20,551 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 17:18:20,553 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 17:18:20,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:18:20 BoogieIcfgContainer [2021-12-15 17:18:20,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 17:18:20,557 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 17:18:20,557 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 17:18:20,559 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 17:18:20,560 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:18:20,560 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 05:18:19" (1/3) ... [2021-12-15 17:18:20,561 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f63e430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:18:20, skipping insertion in model container [2021-12-15 17:18:20,561 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:18:20,562 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:18:20" (2/3) ... [2021-12-15 17:18:20,562 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f63e430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:18:20, skipping insertion in model container [2021-12-15 17:18:20,562 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:18:20,562 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:18:20" (3/3) ... [2021-12-15 17:18:20,563 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product48.cil.c [2021-12-15 17:18:20,599 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 17:18:20,599 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 17:18:20,599 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 17:18:20,600 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 17:18:20,600 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 17:18:20,600 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 17:18:20,600 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 17:18:20,600 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 17:18:20,618 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 189 states, 188 states have (on average 1.3617021276595744) internal successors, (256), 188 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:18:20,650 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 123 [2021-12-15 17:18:20,650 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:18:20,650 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:18:20,657 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:20,658 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 17:18:20,658 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 17:18:20,660 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 189 states, 188 states have (on average 1.3617021276595744) internal successors, (256), 188 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:18:20,669 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 123 [2021-12-15 17:18:20,669 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:18:20,669 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:18:20,670 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:20,670 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 17:18:20,677 INFO L791 eck$LassoCheckResult]: Stem: 171#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 51#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret52#1, main_~retValue_acc~11#1, main_~tmp~9#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 57#L176true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 89#L169true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 124#L184true main_#t~ret52#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret52#1;havoc main_#t~ret52#1; 3#L983true assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 148#L959true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 168#L492true assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet10#1, test_#t~nondet11#1, test_#t~nondet12#1, test_#t~nondet13#1, test_~splverifierCounter~0#1, test_~tmp~0#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~0#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 106#L203-2true [2021-12-15 17:18:20,678 INFO L793 eck$LassoCheckResult]: Loop: 106#L203-2true assume !false; 156#L204true assume test_~splverifierCounter~0#1 < 4; 113#L205true test_~tmp~0#1 := test_#t~nondet10#1;havoc test_#t~nondet10#1; 177#L213true assume !(0 != test_~tmp~0#1); 16#L213-2true test_~tmp___0~0#1 := test_#t~nondet11#1;havoc test_#t~nondet11#1; 104#L223true assume !(0 != test_~tmp___0~0#1); 72#L223-2true test_~tmp___2~0#1 := test_#t~nondet12#1;havoc test_#t~nondet12#1; 102#L233true assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 34#L481true assume { :end_inline_startSystem } true; 82#L241-2true assume { :begin_inline_timeShift } true; 132#L274true assume !(0 != ~pumpRunning~0); 179#L274-2true assume !(0 != ~systemActive~0); 139#L281-1true assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret27#1, __utac_acc__Specification2_spec__2_#t~ret28#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 153#L100-3true __utac_acc__Specification2_spec__2_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret27#1;havoc __utac_acc__Specification2_spec__2_#t~ret27#1; 105#L503true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 95#L503-1true assume { :end_inline___utac_acc__Specification2_spec__2 } true; 121#L291true assume { :end_inline_timeShift } true; 106#L203-2true [2021-12-15 17:18:20,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:20,684 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 1 times [2021-12-15 17:18:20,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:20,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502046523] [2021-12-15 17:18:20,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:20,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:20,788 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:20,838 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:20,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:20,840 INFO L85 PathProgramCache]: Analyzing trace with hash -360184183, now seen corresponding path program 1 times [2021-12-15 17:18:20,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:20,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759807363] [2021-12-15 17:18:20,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:20,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:18:20,913 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 17:18:20,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:18:20,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759807363] [2021-12-15 17:18:20,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759807363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:18:20,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:18:20,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 17:18:20,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133732593] [2021-12-15 17:18:20,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:18:20,919 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:18:20,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:18:20,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 17:18:20,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 17:18:20,947 INFO L87 Difference]: Start difference. First operand has 189 states, 188 states have (on average 1.3617021276595744) internal successors, (256), 188 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 17:18:21,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:18:21,009 INFO L93 Difference]: Finished difference Result 362 states and 478 transitions. [2021-12-15 17:18:21,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 17:18:21,014 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 362 states and 478 transitions. [2021-12-15 17:18:21,018 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 236 [2021-12-15 17:18:21,025 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 362 states to 342 states and 457 transitions. [2021-12-15 17:18:21,027 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 342 [2021-12-15 17:18:21,029 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 342 [2021-12-15 17:18:21,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 457 transitions. [2021-12-15 17:18:21,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:18:21,033 INFO L681 BuchiCegarLoop]: Abstraction has 342 states and 457 transitions. [2021-12-15 17:18:21,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 457 transitions. [2021-12-15 17:18:21,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 339. [2021-12-15 17:18:21,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 339 states have (on average 1.336283185840708) internal successors, (453), 338 states have internal predecessors, (453), 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 17:18:21,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 453 transitions. [2021-12-15 17:18:21,065 INFO L704 BuchiCegarLoop]: Abstraction has 339 states and 453 transitions. [2021-12-15 17:18:21,065 INFO L587 BuchiCegarLoop]: Abstraction has 339 states and 453 transitions. [2021-12-15 17:18:21,065 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-15 17:18:21,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 339 states and 453 transitions. [2021-12-15 17:18:21,066 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 233 [2021-12-15 17:18:21,066 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:18:21,066 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:18:21,067 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:21,067 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:21,067 INFO L791 eck$LassoCheckResult]: Stem: 757#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 646#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret52#1, main_~retValue_acc~11#1, main_~tmp~9#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 647#L176 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 659#L169 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 697#L184 main_#t~ret52#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret52#1;havoc main_#t~ret52#1; 560#L983 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 561#L959 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 742#L492 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet10#1, test_#t~nondet11#1, test_#t~nondet12#1, test_#t~nondet13#1, test_~splverifierCounter~0#1, test_~tmp~0#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~0#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 714#L203-2 [2021-12-15 17:18:21,067 INFO L793 eck$LassoCheckResult]: Loop: 714#L203-2 assume !false; 715#L204 assume test_~splverifierCounter~0#1 < 4; 801#L205 test_~tmp~0#1 := test_#t~nondet10#1;havoc test_#t~nondet10#1; 896#L213 assume !(0 != test_~tmp~0#1); 894#L213-2 test_~tmp___0~0#1 := test_#t~nondet11#1;havoc test_#t~nondet11#1; 892#L223 assume !(0 != test_~tmp___0~0#1); 889#L223-2 test_~tmp___2~0#1 := test_#t~nondet12#1;havoc test_#t~nondet12#1; 887#L233 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet13#1;havoc test_#t~nondet13#1; 885#L241 assume !(0 != test_~tmp___1~0#1); 618#L241-2 assume { :begin_inline_timeShift } true; 881#L274 assume !(0 != ~pumpRunning~0); 878#L274-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; 876#L332 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1, processEnvironment__wrappee__methaneQuery_~tmp~1#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1#1; 874#L306-2 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 870#L298-3 assume { :end_inline_processEnvironment__wrappee__base } true; 843#L306-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 840#L332-1 assume { :end_inline_processEnvironment } true; 838#L281-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret27#1, __utac_acc__Specification2_spec__2_#t~ret28#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 747#L100-3 __utac_acc__Specification2_spec__2_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret27#1;havoc __utac_acc__Specification2_spec__2_#t~ret27#1; 712#L503 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 613#L503-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 704#L291 assume { :end_inline_timeShift } true; 714#L203-2 [2021-12-15 17:18:21,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:21,068 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 2 times [2021-12-15 17:18:21,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:21,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142529817] [2021-12-15 17:18:21,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:21,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:21,079 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:21,092 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:21,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:21,092 INFO L85 PathProgramCache]: Analyzing trace with hash 81840663, now seen corresponding path program 1 times [2021-12-15 17:18:21,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:21,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111064249] [2021-12-15 17:18:21,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:21,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:18:21,112 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 17:18:21,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:18:21,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111064249] [2021-12-15 17:18:21,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111064249] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:18:21,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:18:21,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 17:18:21,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409844695] [2021-12-15 17:18:21,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:18:21,116 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:18:21,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:18:21,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 17:18:21,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 17:18:21,117 INFO L87 Difference]: Start difference. First operand 339 states and 453 transitions. cyclomatic complexity: 117 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:18:21,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:18:21,205 INFO L93 Difference]: Finished difference Result 469 states and 606 transitions. [2021-12-15 17:18:21,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 17:18:21,205 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 469 states and 606 transitions. [2021-12-15 17:18:21,210 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 331 [2021-12-15 17:18:21,212 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 469 states to 469 states and 606 transitions. [2021-12-15 17:18:21,213 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 469 [2021-12-15 17:18:21,213 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 469 [2021-12-15 17:18:21,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 469 states and 606 transitions. [2021-12-15 17:18:21,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:18:21,217 INFO L681 BuchiCegarLoop]: Abstraction has 469 states and 606 transitions. [2021-12-15 17:18:21,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states and 606 transitions. [2021-12-15 17:18:21,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 469. [2021-12-15 17:18:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 469 states have (on average 1.2921108742004264) internal successors, (606), 468 states have internal predecessors, (606), 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 17:18:21,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 606 transitions. [2021-12-15 17:18:21,232 INFO L704 BuchiCegarLoop]: Abstraction has 469 states and 606 transitions. [2021-12-15 17:18:21,232 INFO L587 BuchiCegarLoop]: Abstraction has 469 states and 606 transitions. [2021-12-15 17:18:21,232 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-15 17:18:21,232 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 469 states and 606 transitions. [2021-12-15 17:18:21,234 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 331 [2021-12-15 17:18:21,234 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:18:21,234 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:18:21,235 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:21,235 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] [2021-12-15 17:18:21,235 INFO L791 eck$LassoCheckResult]: Stem: 1587#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 1459#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret52#1, main_~retValue_acc~11#1, main_~tmp~9#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 1460#L176 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1473#L169 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 1516#L184 main_#t~ret52#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret52#1;havoc main_#t~ret52#1; 1376#L983 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 1377#L959 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 1572#L492 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet10#1, test_#t~nondet11#1, test_#t~nondet12#1, test_#t~nondet13#1, test_~splverifierCounter~0#1, test_~tmp~0#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~0#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1536#L203-2 [2021-12-15 17:18:21,235 INFO L793 eck$LassoCheckResult]: Loop: 1536#L203-2 assume !false; 1537#L204 assume test_~splverifierCounter~0#1 < 4; 1579#L205 test_~tmp~0#1 := test_#t~nondet10#1;havoc test_#t~nondet10#1; 1701#L213 assume !(0 != test_~tmp~0#1); 1692#L213-2 test_~tmp___0~0#1 := test_#t~nondet11#1;havoc test_#t~nondet11#1; 1675#L223 assume !(0 != test_~tmp___0~0#1); 1490#L223-2 test_~tmp___2~0#1 := test_#t~nondet12#1;havoc test_#t~nondet12#1; 1491#L233 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet13#1;havoc test_#t~nondet13#1; 1442#L241 assume !(0 != test_~tmp___1~0#1); 1432#L241-2 assume { :begin_inline_timeShift } true; 1506#L274 assume !(0 != ~pumpRunning~0); 1558#L274-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; 1438#L332 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1, processEnvironment__wrappee__methaneQuery_~tmp~1#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1#1; 1439#L306-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret26#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~4#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~7#1;havoc isHighWaterLevel_~tmp~4#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 1469#L140-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 1474#L145-1 isHighWaterLevel_#t~ret26#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~4#1 := isHighWaterLevel_#t~ret26#1;havoc isHighWaterLevel_#t~ret26#1; 1410#L451-3 assume 0 != isHighWaterLevel_~tmp~4#1;isHighWaterLevel_~tmp___0~1#1 := 0; 1411#L451-5 isHighWaterLevel_~retValue_acc~7#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~7#1; 1389#L457-1 processEnvironment__wrappee__methaneQuery_#t~ret14#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__methaneQuery_~tmp~1#1 := processEnvironment__wrappee__methaneQuery_#t~ret14#1;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1; 1378#L310-3 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1380#L298-2 assume { :end_inline_processEnvironment__wrappee__base } true; 1650#L306-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 1396#L332-1 assume { :end_inline_processEnvironment } true; 1455#L281-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret27#1, __utac_acc__Specification2_spec__2_#t~ret28#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 1567#L100-3 __utac_acc__Specification2_spec__2_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret27#1;havoc __utac_acc__Specification2_spec__2_#t~ret27#1; 1533#L503 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 1427#L503-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 1521#L291 assume { :end_inline_timeShift } true; 1536#L203-2 [2021-12-15 17:18:21,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:21,236 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 3 times [2021-12-15 17:18:21,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:21,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72099178] [2021-12-15 17:18:21,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:21,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:21,246 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:21,257 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:21,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:21,258 INFO L85 PathProgramCache]: Analyzing trace with hash -920325171, now seen corresponding path program 1 times [2021-12-15 17:18:21,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:21,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926172104] [2021-12-15 17:18:21,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:21,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:18:21,314 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 17:18:21,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:18:21,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926172104] [2021-12-15 17:18:21,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926172104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:18:21,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:18:21,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 17:18:21,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614278689] [2021-12-15 17:18:21,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:18:21,316 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:18:21,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:18:21,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 17:18:21,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 17:18:21,316 INFO L87 Difference]: Start difference. First operand 469 states and 606 transitions. cyclomatic complexity: 140 Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 17:18:21,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:18:21,377 INFO L93 Difference]: Finished difference Result 1343 states and 1706 transitions. [2021-12-15 17:18:21,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 17:18:21,378 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1343 states and 1706 transitions. [2021-12-15 17:18:21,385 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 961 [2021-12-15 17:18:21,391 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1343 states to 1343 states and 1706 transitions. [2021-12-15 17:18:21,391 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1343 [2021-12-15 17:18:21,392 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1343 [2021-12-15 17:18:21,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1343 states and 1706 transitions. [2021-12-15 17:18:21,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:18:21,394 INFO L681 BuchiCegarLoop]: Abstraction has 1343 states and 1706 transitions. [2021-12-15 17:18:21,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states and 1706 transitions. [2021-12-15 17:18:21,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 493. [2021-12-15 17:18:21,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 493 states have (on average 1.2778904665314401) internal successors, (630), 492 states have internal predecessors, (630), 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 17:18:21,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 630 transitions. [2021-12-15 17:18:21,405 INFO L704 BuchiCegarLoop]: Abstraction has 493 states and 630 transitions. [2021-12-15 17:18:21,405 INFO L587 BuchiCegarLoop]: Abstraction has 493 states and 630 transitions. [2021-12-15 17:18:21,405 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-15 17:18:21,405 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 493 states and 630 transitions. [2021-12-15 17:18:21,407 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 347 [2021-12-15 17:18:21,407 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:18:21,407 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:18:21,408 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:21,408 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] [2021-12-15 17:18:21,408 INFO L791 eck$LassoCheckResult]: Stem: 3425#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 3283#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret52#1, main_~retValue_acc~11#1, main_~tmp~9#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 3284#L176 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 3298#L169 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 3349#L184 main_#t~ret52#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret52#1;havoc main_#t~ret52#1; 3198#L983 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 3199#L959 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 3407#L492 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet10#1, test_#t~nondet11#1, test_#t~nondet12#1, test_#t~nondet13#1, test_~splverifierCounter~0#1, test_~tmp~0#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~0#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 3424#L203-2 [2021-12-15 17:18:21,408 INFO L793 eck$LassoCheckResult]: Loop: 3424#L203-2 assume !false; 3505#L204 assume test_~splverifierCounter~0#1 < 4; 3504#L205 test_~tmp~0#1 := test_#t~nondet10#1;havoc test_#t~nondet10#1; 3502#L213 assume !(0 != test_~tmp~0#1); 3457#L213-2 test_~tmp___0~0#1 := test_#t~nondet11#1;havoc test_#t~nondet11#1; 3458#L223 assume !(0 != test_~tmp___0~0#1); 3451#L223-2 test_~tmp___2~0#1 := test_#t~nondet12#1;havoc test_#t~nondet12#1; 3452#L233 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet13#1;havoc test_#t~nondet13#1; 3265#L241 assume !(0 != test_~tmp___1~0#1); 3255#L241-2 assume { :begin_inline_timeShift } true; 3338#L274 assume !(0 != ~pumpRunning~0); 3390#L274-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; 3539#L332 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1, processEnvironment__wrappee__methaneQuery_~tmp~1#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1#1; 3532#L306-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret26#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~4#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~7#1;havoc isHighWaterLevel_~tmp~4#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 3299#L140-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 3300#L145-1 isHighWaterLevel_#t~ret26#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~4#1 := isHighWaterLevel_#t~ret26#1;havoc isHighWaterLevel_#t~ret26#1; 3232#L451-3 assume !(0 != isHighWaterLevel_~tmp~4#1);isHighWaterLevel_~tmp___0~1#1 := 1; 3233#L451-5 isHighWaterLevel_~retValue_acc~7#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~7#1; 3343#L457-1 processEnvironment__wrappee__methaneQuery_#t~ret14#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__methaneQuery_~tmp~1#1 := processEnvironment__wrappee__methaneQuery_#t~ret14#1;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1; 3523#L310-3 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 3517#L298-2 assume { :end_inline_processEnvironment__wrappee__base } true; 3513#L306-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 3490#L332-1 assume { :end_inline_processEnvironment } true; 3491#L281-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret27#1, __utac_acc__Specification2_spec__2_#t~ret28#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 3486#L100-3 __utac_acc__Specification2_spec__2_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret27#1;havoc __utac_acc__Specification2_spec__2_#t~ret27#1; 3487#L503 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 3507#L503-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 3506#L291 assume { :end_inline_timeShift } true; 3424#L203-2 [2021-12-15 17:18:21,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:21,408 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 4 times [2021-12-15 17:18:21,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:21,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818902880] [2021-12-15 17:18:21,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:21,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:21,416 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:21,426 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:21,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:21,426 INFO L85 PathProgramCache]: Analyzing trace with hash -662159733, now seen corresponding path program 1 times [2021-12-15 17:18:21,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:21,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354949038] [2021-12-15 17:18:21,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:21,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:18:21,450 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 17:18:21,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:18:21,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354949038] [2021-12-15 17:18:21,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354949038] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:18:21,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:18:21,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:18:21,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132291293] [2021-12-15 17:18:21,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:18:21,451 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:18:21,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:18:21,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 17:18:21,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 17:18:21,452 INFO L87 Difference]: Start difference. First operand 493 states and 630 transitions. cyclomatic complexity: 140 Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 17:18:21,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:18:21,564 INFO L93 Difference]: Finished difference Result 1175 states and 1496 transitions. [2021-12-15 17:18:21,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 17:18:21,565 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1175 states and 1496 transitions. [2021-12-15 17:18:21,571 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 849 [2021-12-15 17:18:21,576 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1175 states to 1175 states and 1496 transitions. [2021-12-15 17:18:21,576 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1175 [2021-12-15 17:18:21,577 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1175 [2021-12-15 17:18:21,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1175 states and 1496 transitions. [2021-12-15 17:18:21,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:18:21,578 INFO L681 BuchiCegarLoop]: Abstraction has 1175 states and 1496 transitions. [2021-12-15 17:18:21,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states and 1496 transitions. [2021-12-15 17:18:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 529. [2021-12-15 17:18:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 529 states have (on average 1.2589792060491494) internal successors, (666), 528 states have internal predecessors, (666), 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 17:18:21,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 666 transitions. [2021-12-15 17:18:21,603 INFO L704 BuchiCegarLoop]: Abstraction has 529 states and 666 transitions. [2021-12-15 17:18:21,603 INFO L587 BuchiCegarLoop]: Abstraction has 529 states and 666 transitions. [2021-12-15 17:18:21,603 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-15 17:18:21,603 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 529 states and 666 transitions. [2021-12-15 17:18:21,605 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 371 [2021-12-15 17:18:21,605 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:18:21,605 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:18:21,605 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:18:21,605 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] [2021-12-15 17:18:21,606 INFO L791 eck$LassoCheckResult]: Stem: 5137#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 4963#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret52#1, main_~retValue_acc~11#1, main_~tmp~9#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 4964#L176 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 4978#L169 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 5036#L184 main_#t~ret52#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret52#1;havoc main_#t~ret52#1; 4878#L983 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 4879#L959 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 5111#L492 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet10#1, test_#t~nondet11#1, test_#t~nondet12#1, test_#t~nondet13#1, test_~splverifierCounter~0#1, test_~tmp~0#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~0#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 5136#L203-2 [2021-12-15 17:18:21,606 INFO L793 eck$LassoCheckResult]: Loop: 5136#L203-2 assume !false; 5124#L204 assume test_~splverifierCounter~0#1 < 4; 5071#L205 test_~tmp~0#1 := test_#t~nondet10#1;havoc test_#t~nondet10#1; 5072#L213 assume !(0 != test_~tmp~0#1); 4901#L213-2 test_~tmp___0~0#1 := test_#t~nondet11#1;havoc test_#t~nondet11#1; 4902#L223 assume !(0 != test_~tmp___0~0#1); 4887#L223-2 test_~tmp___2~0#1 := test_#t~nondet12#1;havoc test_#t~nondet12#1; 5288#L233 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet13#1;havoc test_#t~nondet13#1; 4947#L241 assume !(0 != test_~tmp___1~0#1); 4935#L241-2 assume { :begin_inline_timeShift } true; 5092#L274 assume !(0 != ~pumpRunning~0); 5093#L274-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; 5144#L332 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1, processEnvironment__wrappee__methaneQuery_~tmp~1#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1#1; 4973#L306-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret26#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~4#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~7#1;havoc isHighWaterLevel_~tmp~4#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 4974#L140-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 5213#L145-1 isHighWaterLevel_#t~ret26#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~4#1 := isHighWaterLevel_#t~ret26#1;havoc isHighWaterLevel_#t~ret26#1; 5214#L451-3 assume 0 != isHighWaterLevel_~tmp~4#1;isHighWaterLevel_~tmp___0~1#1 := 0; 5029#L451-5 isHighWaterLevel_~retValue_acc~7#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~7#1; 5030#L457-1 processEnvironment__wrappee__methaneQuery_#t~ret14#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__methaneQuery_~tmp~1#1 := processEnvironment__wrappee__methaneQuery_#t~ret14#1;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1; 5199#L310-3 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 5200#L298-2 assume { :end_inline_processEnvironment__wrappee__base } true; 4903#L306-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 4900#L332-1 assume { :end_inline_processEnvironment } true; 4961#L281-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret27#1, __utac_acc__Specification2_spec__2_#t~ret28#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 5103#L100-3 __utac_acc__Specification2_spec__2_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret27#1;havoc __utac_acc__Specification2_spec__2_#t~ret27#1; 5061#L503 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 4929#L503-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 5296#L291 assume { :end_inline_timeShift } true; 5136#L203-2 [2021-12-15 17:18:21,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:21,606 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 5 times [2021-12-15 17:18:21,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:21,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781455397] [2021-12-15 17:18:21,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:21,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:21,630 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:21,638 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:21,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:21,639 INFO L85 PathProgramCache]: Analyzing trace with hash 90792079, now seen corresponding path program 1 times [2021-12-15 17:18:21,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:21,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156005759] [2021-12-15 17:18:21,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:21,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:21,644 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:21,649 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:21,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:18:21,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1089862648, now seen corresponding path program 1 times [2021-12-15 17:18:21,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:18:21,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399669092] [2021-12-15 17:18:21,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:18:21,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:18:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:21,659 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:18:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:18:21,670 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:18:21,871 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 17:18:21,874 INFO L158 Benchmark]: Toolchain (without parser) took 2282.08ms. Allocated memory was 113.2MB in the beginning and 153.1MB in the end (delta: 39.8MB). Free memory was 78.0MB in the beginning and 109.7MB in the end (delta: -31.7MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2021-12-15 17:18:21,874 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory was 86.2MB in the beginning and 86.2MB in the end (delta: 26.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:18:21,874 INFO L158 Benchmark]: CACSL2BoogieTranslator took 418.13ms. Allocated memory is still 113.2MB. Free memory was 77.8MB in the beginning and 81.9MB in the end (delta: -4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 17:18:21,875 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.77ms. Allocated memory is still 113.2MB. Free memory was 81.4MB in the beginning and 77.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 17:18:21,875 INFO L158 Benchmark]: Boogie Preprocessor took 28.42ms. Allocated memory is still 113.2MB. Free memory was 77.7MB in the beginning and 75.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 17:18:21,875 INFO L158 Benchmark]: RCFGBuilder took 466.64ms. Allocated memory is still 113.2MB. Free memory was 75.1MB in the beginning and 52.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-15 17:18:21,876 INFO L158 Benchmark]: BuchiAutomizer took 1315.79ms. Allocated memory was 113.2MB in the beginning and 153.1MB in the end (delta: 39.8MB). Free memory was 52.0MB in the beginning and 109.7MB in the end (delta: -57.7MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. [2021-12-15 17:18:21,877 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory was 86.2MB in the beginning and 86.2MB in the end (delta: 26.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 418.13ms. Allocated memory is still 113.2MB. Free memory was 77.8MB in the beginning and 81.9MB in the end (delta: -4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.77ms. Allocated memory is still 113.2MB. Free memory was 81.4MB in the beginning and 77.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.42ms. Allocated memory is still 113.2MB. Free memory was 77.7MB in the beginning and 75.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 466.64ms. Allocated memory is still 113.2MB. Free memory was 75.1MB in the beginning and 52.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * BuchiAutomizer took 1315.79ms. Allocated memory was 113.2MB in the beginning and 153.1MB in the end (delta: 39.8MB). Free memory was 52.0MB in the beginning and 109.7MB in the end (delta: -57.7MB). Peak memory consumption was 29.3MB. 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 17:18:21,902 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