./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product24.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 609efdf4f988170ff745a87fec8ed7ede6211079 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:09:07,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:09:07,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:09:07,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:09:07,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:09:07,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:09:07,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:09:07,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:09:07,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:09:07,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:09:07,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:09:07,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:09:07,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:09:07,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:09:07,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:09:07,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:09:07,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:09:07,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:09:07,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:09:07,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:09:07,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:09:07,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:09:07,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:09:07,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:09:07,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:09:07,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:09:07,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:09:07,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:09:07,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:09:07,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:09:07,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:09:07,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:09:07,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:09:07,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:09:07,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:09:07,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:09:07,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:09:07,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:09:07,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:09:07,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:09:07,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:09:07,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:09:07,945 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:09:07,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:09:07,949 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:09:07,949 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:09:07,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:09:07,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:09:07,951 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:09:07,951 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:09:07,951 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:09:07,952 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:09:07,953 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:09:07,953 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:09:07,961 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:09:07,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:09:07,961 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:09:07,961 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:09:07,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:09:07,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:09:07,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:09:07,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:09:07,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:09:07,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:09:07,963 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:09:07,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:09:07,963 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:09:07,963 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:09:07,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:09:07,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:09:07,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:09:07,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:09:07,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:09:07,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:09:07,966 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:09:07,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 609efdf4f988170ff745a87fec8ed7ede6211079 [2021-08-27 16:09:08,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:09:08,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:09:08,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:09:08,301 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:09:08,301 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:09:08,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product24.cil.c [2021-08-27 16:09:08,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffcab7225/e972caa6bb8c4e5da5fdc960e75463a2/FLAG2205b40d9 [2021-08-27 16:09:08,832 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:09:08,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product24.cil.c [2021-08-27 16:09:08,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffcab7225/e972caa6bb8c4e5da5fdc960e75463a2/FLAG2205b40d9 [2021-08-27 16:09:09,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffcab7225/e972caa6bb8c4e5da5fdc960e75463a2 [2021-08-27 16:09:09,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:09:09,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:09:09,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:09:09,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:09:09,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:09:09,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:09:09" (1/1) ... [2021-08-27 16:09:09,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1602016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:09:09, skipping insertion in model container [2021-08-27 16:09:09,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:09:09" (1/1) ... [2021-08-27 16:09:09,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:09:09,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:09:09,337 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product24.cil.c[1281,1294] [2021-08-27 16:09:09,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:09:09,525 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:09:09,541 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product24.cil.c[1281,1294] [2021-08-27 16:09:09,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:09:09,621 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:09:09,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:09:09 WrapperNode [2021-08-27 16:09:09,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:09:09,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:09:09,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:09:09,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:09:09,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:09:09" (1/1) ... [2021-08-27 16:09:09,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:09:09" (1/1) ... [2021-08-27 16:09:09,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:09:09,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:09:09,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:09:09,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:09:09,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:09:09" (1/1) ... [2021-08-27 16:09:09,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:09:09" (1/1) ... [2021-08-27 16:09:09,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:09:09" (1/1) ... [2021-08-27 16:09:09,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:09:09" (1/1) ... [2021-08-27 16:09:09,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:09:09" (1/1) ... [2021-08-27 16:09:09,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:09:09" (1/1) ... [2021-08-27 16:09:09,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:09:09" (1/1) ... [2021-08-27 16:09:09,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:09:09,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:09:09,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:09:09,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:09:09,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:09:09" (1/1) ... [2021-08-27 16:09:09,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:09:09,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:09:09,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 16:09:09,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 16:09:09,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:09:09,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:09:09,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:09:09,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:09:10,671 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:09:10,672 INFO L299 CfgBuilder]: Removed 168 assume(true) statements. [2021-08-27 16:09:10,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:09:10 BoogieIcfgContainer [2021-08-27 16:09:10,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:09:10,676 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:09:10,677 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:09:10,679 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:09:10,680 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:09:10,683 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:09:09" (1/3) ... [2021-08-27 16:09:10,683 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f3af81f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:09:10, skipping insertion in model container [2021-08-27 16:09:10,683 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:09:10,684 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:09:09" (2/3) ... [2021-08-27 16:09:10,684 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f3af81f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:09:10, skipping insertion in model container [2021-08-27 16:09:10,684 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:09:10,684 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:09:10" (3/3) ... [2021-08-27 16:09:10,686 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product24.cil.c [2021-08-27 16:09:10,713 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:09:10,713 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:09:10,713 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:09:10,713 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:09:10,713 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:09:10,714 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:09:10,714 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:09:10,714 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:09:10,729 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 110 states, 109 states have (on average 1.5137614678899083) internal successors, (165), 109 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:09:10,753 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 71 [2021-08-27 16:09:10,754 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:09:10,754 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:09:10,760 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:09:10,760 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:09:10,760 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:09:10,761 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 110 states, 109 states have (on average 1.5137614678899083) internal successors, (165), 109 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:09:10,766 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 71 [2021-08-27 16:09:10,766 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:09:10,766 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:09:10,767 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:09:10,767 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:09:10,771 INFO L791 eck$LassoCheckResult]: Stem: 97#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(21);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(30);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(9);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(21);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(25);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(13);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string73.base, #t~string73.offset, 1);call write~init~int(77, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(101, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(116, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(104, #t~string73.base, 4 + #t~string73.offset, 1);call write~init~int(58, #t~string73.base, 5 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 6 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string75.base, #t~string75.offset, 1);call write~init~int(82, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(73, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(84, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 4 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string77.base, #t~string77.offset, 1);call write~init~int(75, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 25#L-1true havoc main_#res;havoc main_#t~ret34, main_~retValue_acc~3, main_~tmp~5;havoc main_~retValue_acc~3;havoc main_~tmp~5; 37#L947true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 62#L955true main_#t~ret34 := valid_product_#res;main_~tmp~5 := main_#t~ret34;havoc main_#t~ret34; 88#L456true assume 0 != main_~tmp~5; 13#L430true havoc test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 74#L352-1true [2021-08-27 16:09:10,772 INFO L793 eck$LassoCheckResult]: Loop: 74#L352-1true assume !false; 111#L278true assume test_~splverifierCounter~0 < 4; 45#L279true test_~tmp~3 := test_#t~nondet27;havoc test_#t~nondet27; 55#L287true assume !(0 != test_~tmp~3); 106#L287-1true test_~tmp___0~1 := test_#t~nondet28;havoc test_#t~nondet28; 22#L297true assume !(0 != test_~tmp___0~1); 21#L297-1true test_~tmp___2~0 := test_#t~nondet29;havoc test_#t~nondet29; 66#L307true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 95#L315-1true assume !(0 != ~pumpRunning~0); 58#L70true assume !(0 != ~systemActive~0); 65#L77true havoc __utac_acc__Specification3_spec__1_#t~ret31, __utac_acc__Specification3_spec__1_#t~ret32, __utac_acc__Specification3_spec__1_#t~ret33, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 52#L879-1true __utac_acc__Specification3_spec__1_#t~ret31 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret31;havoc __utac_acc__Specification3_spec__1_#t~ret31; 33#L346true assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 74#L352-1true [2021-08-27 16:09:10,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:09:10,776 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:09:10,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:09:10,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703555642] [2021-08-27 16:09:10,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:09:10,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:09:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:09:11,024 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:09:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:09:11,170 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:09:11,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:09:11,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1670755457, now seen corresponding path program 1 times [2021-08-27 16:09:11,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:09:11,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817423447] [2021-08-27 16:09:11,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:09:11,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:09:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:09:11,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:09:11,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:09:11,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817423447] [2021-08-27 16:09:11,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817423447] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:09:11,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:09:11,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:09:11,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251503215] [2021-08-27 16:09:11,254 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:09:11,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:09:11,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:09:11,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:09:11,264 INFO L87 Difference]: Start difference. First operand has 110 states, 109 states have (on average 1.5137614678899083) internal successors, (165), 109 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:09:11,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:09:11,341 INFO L93 Difference]: Finished difference Result 214 states and 306 transitions. [2021-08-27 16:09:11,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:09:11,344 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 214 states and 306 transitions. [2021-08-27 16:09:11,352 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 138 [2021-08-27 16:09:11,363 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 214 states to 200 states and 291 transitions. [2021-08-27 16:09:11,365 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 200 [2021-08-27 16:09:11,366 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 200 [2021-08-27 16:09:11,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 291 transitions. [2021-08-27 16:09:11,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:09:11,369 INFO L681 BuchiCegarLoop]: Abstraction has 200 states and 291 transitions. [2021-08-27 16:09:11,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 291 transitions. [2021-08-27 16:09:11,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2021-08-27 16:09:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 198 states have (on average 1.4545454545454546) internal successors, (288), 197 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:09:11,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 288 transitions. [2021-08-27 16:09:11,418 INFO L704 BuchiCegarLoop]: Abstraction has 198 states and 288 transitions. [2021-08-27 16:09:11,418 INFO L587 BuchiCegarLoop]: Abstraction has 198 states and 288 transitions. [2021-08-27 16:09:11,418 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:09:11,418 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 198 states and 288 transitions. [2021-08-27 16:09:11,420 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 136 [2021-08-27 16:09:11,420 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:09:11,420 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:09:11,421 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:09:11,421 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:09:11,421 INFO L791 eck$LassoCheckResult]: Stem: 447#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(21);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(30);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(9);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(21);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(25);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(13);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string73.base, #t~string73.offset, 1);call write~init~int(77, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(101, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(116, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(104, #t~string73.base, 4 + #t~string73.offset, 1);call write~init~int(58, #t~string73.base, 5 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 6 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string75.base, #t~string75.offset, 1);call write~init~int(82, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(73, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(84, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 4 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string77.base, #t~string77.offset, 1);call write~init~int(75, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 369#L-1 havoc main_#res;havoc main_#t~ret34, main_~retValue_acc~3, main_~tmp~5;havoc main_~retValue_acc~3;havoc main_~tmp~5; 370#L947 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 392#L955 main_#t~ret34 := valid_product_#res;main_~tmp~5 := main_#t~ret34;havoc main_#t~ret34; 424#L456 assume 0 != main_~tmp~5; 349#L430 havoc test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 350#L352-1 [2021-08-27 16:09:11,421 INFO L793 eck$LassoCheckResult]: Loop: 350#L352-1 assume !false; 433#L278 assume test_~splverifierCounter~0 < 4; 405#L279 test_~tmp~3 := test_#t~nondet27;havoc test_#t~nondet27; 406#L287 assume !(0 != test_~tmp~3); 420#L287-1 test_~tmp___0~1 := test_#t~nondet28;havoc test_#t~nondet28; 364#L297 assume !(0 != test_~tmp___0~1); 341#L297-1 test_~tmp___2~0 := test_#t~nondet29;havoc test_#t~nondet29; 363#L307 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 380#L315-1 assume !(0 != ~pumpRunning~0); 466#L70 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 464#L128 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret7, processEnvironment__wrappee__lowWaterSensor_~tmp~0;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~0; 461#L102-1 assume !(0 != ~pumpRunning~0); 460#L77 havoc __utac_acc__Specification3_spec__1_#t~ret31, __utac_acc__Specification3_spec__1_#t~ret32, __utac_acc__Specification3_spec__1_#t~ret33, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 459#L879-1 __utac_acc__Specification3_spec__1_#t~ret31 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret31;havoc __utac_acc__Specification3_spec__1_#t~ret31; 458#L346 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 350#L352-1 [2021-08-27 16:09:11,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:09:11,421 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:09:11,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:09:11,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081930132] [2021-08-27 16:09:11,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:09:11,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:09:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:09:11,454 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:09:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:09:11,495 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:09:11,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:09:11,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1427585839, now seen corresponding path program 1 times [2021-08-27 16:09:11,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:09:11,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938905678] [2021-08-27 16:09:11,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:09:11,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:09:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:09:11,500 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:09:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:09:11,505 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:09:11,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:09:11,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1021999211, now seen corresponding path program 1 times [2021-08-27 16:09:11,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:09:11,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981679932] [2021-08-27 16:09:11,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:09:11,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:09:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:09:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:09:11,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:09:11,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981679932] [2021-08-27 16:09:11,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981679932] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:09:11,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:09:11,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:09:11,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892225446] [2021-08-27 16:09:11,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:09:11,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:09:11,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:09:11,686 INFO L87 Difference]: Start difference. First operand 198 states and 288 transitions. cyclomatic complexity: 93 Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:09:11,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:09:11,801 INFO L93 Difference]: Finished difference Result 686 states and 1012 transitions. [2021-08-27 16:09:11,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:09:11,802 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 686 states and 1012 transitions. [2021-08-27 16:09:11,808 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 494 [2021-08-27 16:09:11,813 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 686 states to 686 states and 1012 transitions. [2021-08-27 16:09:11,813 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 686 [2021-08-27 16:09:11,815 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 686 [2021-08-27 16:09:11,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 686 states and 1012 transitions. [2021-08-27 16:09:11,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:09:11,817 INFO L681 BuchiCegarLoop]: Abstraction has 686 states and 1012 transitions. [2021-08-27 16:09:11,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states and 1012 transitions. [2021-08-27 16:09:11,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 390. [2021-08-27 16:09:11,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 390 states have (on average 1.441025641025641) internal successors, (562), 389 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:09:11,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 562 transitions. [2021-08-27 16:09:11,833 INFO L704 BuchiCegarLoop]: Abstraction has 390 states and 562 transitions. [2021-08-27 16:09:11,833 INFO L587 BuchiCegarLoop]: Abstraction has 390 states and 562 transitions. [2021-08-27 16:09:11,833 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:09:11,833 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 390 states and 562 transitions. [2021-08-27 16:09:11,836 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 272 [2021-08-27 16:09:11,836 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:09:11,836 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:09:11,837 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:09:11,837 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:09:11,837 INFO L791 eck$LassoCheckResult]: Stem: 1376#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(21);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(30);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(9);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(21);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(25);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(13);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string73.base, #t~string73.offset, 1);call write~init~int(77, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(101, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(116, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(104, #t~string73.base, 4 + #t~string73.offset, 1);call write~init~int(58, #t~string73.base, 5 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 6 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string75.base, #t~string75.offset, 1);call write~init~int(82, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(73, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(84, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 4 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string77.base, #t~string77.offset, 1);call write~init~int(75, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1277#L-1 havoc main_#res;havoc main_#t~ret34, main_~retValue_acc~3, main_~tmp~5;havoc main_~retValue_acc~3;havoc main_~tmp~5; 1278#L947 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 1296#L955 main_#t~ret34 := valid_product_#res;main_~tmp~5 := main_#t~ret34;havoc main_#t~ret34; 1336#L456 assume 0 != main_~tmp~5; 1250#L430 havoc test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_#t~nondet30, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1251#L352-1 [2021-08-27 16:09:11,837 INFO L793 eck$LassoCheckResult]: Loop: 1251#L352-1 assume !false; 1348#L278 assume test_~splverifierCounter~0 < 4; 1311#L279 test_~tmp~3 := test_#t~nondet27;havoc test_#t~nondet27; 1312#L287 assume !(0 != test_~tmp~3); 1327#L287-1 test_~tmp___0~1 := test_#t~nondet28;havoc test_#t~nondet28; 1268#L297 assume !(0 != test_~tmp___0~1); 1269#L297-1 test_~tmp___2~0 := test_#t~nondet29;havoc test_#t~nondet29; 1516#L307 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1343#L315-1 assume !(0 != ~pumpRunning~0); 1510#L70 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 1508#L128 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret7, processEnvironment__wrappee__lowWaterSensor_~tmp~0;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~0; 1501#L102-1 assume !(0 != ~pumpRunning~0); 1340#L77 havoc __utac_acc__Specification3_spec__1_#t~ret31, __utac_acc__Specification3_spec__1_#t~ret32, __utac_acc__Specification3_spec__1_#t~ret33, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 1341#L879-1 __utac_acc__Specification3_spec__1_#t~ret31 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret31;havoc __utac_acc__Specification3_spec__1_#t~ret31; 1288#L346 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~4);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 1289#L911 __utac_acc__Specification3_spec__1_#t~ret32 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret32;havoc __utac_acc__Specification3_spec__1_#t~ret32; 1362#L352 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 1251#L352-1 [2021-08-27 16:09:11,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:09:11,838 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:09:11,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:09:11,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400526182] [2021-08-27 16:09:11,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:09:11,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:09:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:09:11,885 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:09:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:09:11,936 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:09:11,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:09:11,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1815416189, now seen corresponding path program 1 times [2021-08-27 16:09:11,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:09:11,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915232871] [2021-08-27 16:09:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:09:11,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:09:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:09:11,942 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:09:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:09:11,947 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:09:11,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:09:11,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1406261347, now seen corresponding path program 1 times [2021-08-27 16:09:11,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:09:11,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208495839] [2021-08-27 16:09:11,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:09:11,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:09:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:09:11,971 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:09:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:09:12,001 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:09:53,577 WARN L207 SmtUtils]: Spent 41.41 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:10:37,044 WARN L207 SmtUtils]: Spent 20.50 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:10:37,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:10:37 BoogieIcfgContainer [2021-08-27 16:10:37,209 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:10:37,210 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:10:37,210 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:10:37,211 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:10:37,211 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:09:10" (3/4) ... [2021-08-27 16:10:37,213 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:10:37,275 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:10:37,275 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:10:37,277 INFO L168 Benchmark]: Toolchain (without parser) took 88099.80 ms. Allocated memory was 56.6 MB in the beginning and 104.9 MB in the end (delta: 48.2 MB). Free memory was 34.5 MB in the beginning and 75.0 MB in the end (delta: -40.5 MB). Peak memory consumption was 65.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:10:37,278 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 38.5 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:10:37,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 441.66 ms. Allocated memory is still 56.6 MB. Free memory was 34.3 MB in the beginning and 32.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:10:37,279 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.27 ms. Allocated memory is still 56.6 MB. Free memory was 32.2 MB in the beginning and 28.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:10:37,292 INFO L168 Benchmark]: Boogie Preprocessor took 43.30 ms. Allocated memory is still 56.6 MB. Free memory was 28.6 MB in the beginning and 26.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:10:37,296 INFO L168 Benchmark]: RCFGBuilder took 924.94 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 26.1 MB in the beginning and 42.5 MB in the end (delta: -16.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:10:37,296 INFO L168 Benchmark]: BuchiAutomizer took 86533.44 ms. Allocated memory was 69.2 MB in the beginning and 104.9 MB in the end (delta: 35.7 MB). Free memory was 42.2 MB in the beginning and 18.4 MB in the end (delta: 23.8 MB). Peak memory consumption was 63.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:10:37,297 INFO L168 Benchmark]: Witness Printer took 65.09 ms. Allocated memory is still 104.9 MB. Free memory was 18.4 MB in the beginning and 75.0 MB in the end (delta: -56.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:10:37,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 38.5 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 441.66 ms. Allocated memory is still 56.6 MB. Free memory was 34.3 MB in the beginning and 32.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.27 ms. Allocated memory is still 56.6 MB. Free memory was 32.2 MB in the beginning and 28.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.30 ms. Allocated memory is still 56.6 MB. Free memory was 28.6 MB in the beginning and 26.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 924.94 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 26.1 MB in the beginning and 42.5 MB in the end (delta: -16.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 86533.44 ms. Allocated memory was 69.2 MB in the beginning and 104.9 MB in the end (delta: 35.7 MB). Free memory was 42.2 MB in the beginning and 18.4 MB in the end (delta: 23.8 MB). Peak memory consumption was 63.1 MB. Max. memory is 16.1 GB. * Witness Printer took 65.09 ms. Allocated memory is still 104.9 MB. Free memory was 18.4 MB in the beginning and 75.0 MB in the end (delta: -56.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 390 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 86.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 86.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 54.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 298 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 390 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 368 SDtfs, 719 SDslu, 781 SDs, 0 SdLazy, 89 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.8ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 277]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=4631} State at position 1 is {NULL=4655, NULL=0, NULL=0, NULL=0, NULL=4650, NULL=0, NULL=4631, retValue_acc=0, NULL=4632, NULL=4644, NULL=4652, tmp=0, NULL=4654, NULL=4646, NULL=4645, methaneLevelCritical=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23e4d5a5=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@11bee504=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7097a3a2=0, NULL=0, NULL=0, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@13b8d569=0, NULL=4653, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26585e37=0, cleanupTimeShifts=4, NULL=4648, tmp=0, NULL=4633, NULL=4639, tmp___0=1, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, \result=1, retValue_acc=0, NULL=4641, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@15daf977=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=4634, \result=1, head=0, pumpRunning=0, NULL=4651, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@76d7ebff=61, NULL=4649, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7002f41a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7e8fb7e9=0, NULL=0, NULL=4647, NULL=0, tmp=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66cbf845=0, NULL=4643, NULL=0, NULL=0, NULL=0, NULL=4642, retValue_acc=1, NULL=4658, NULL=0, NULL=4656, tmp___2=61, NULL=0, tmp___0=0, splverifierCounter=0, NULL=0, \result=0, NULL=4635, NULL=4640, tmp=0, tmp___1=0, head=0, NULL=4638, NULL=0, NULL=0, NULL=4659, NULL=4657, NULL=4636, NULL=4637} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L62] int pumpRunning = 0; [L63] int systemActive = 1; [L371] int cleanupTimeShifts = 4; [L639] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L836] int waterLevel = 1; [L837] int methaneLevelCritical = 0; [L447] int retValue_acc ; [L448] int tmp ; [L951] int retValue_acc ; [L954] retValue_acc = 1 [L955] return (retValue_acc); [L454] tmp = valid_product() [L456] COND TRUE \read(tmp) [L268] int splverifierCounter ; [L269] int tmp ; [L270] int tmp___0 ; [L271] int tmp___1 ; [L272] int tmp___2 ; [L275] splverifierCounter = 0 Loop: [L277] COND TRUE 1 [L279] COND TRUE splverifierCounter < 4 [L285] tmp = __VERIFIER_nondet_int() [L287] COND FALSE !(\read(tmp)) [L295] tmp___0 = __VERIFIER_nondet_int() [L297] COND FALSE !(\read(tmp___0)) [L305] tmp___2 = __VERIFIER_nondet_int() [L307] COND TRUE \read(tmp___2) [L259] systemActive = 1 [L70] COND FALSE !(\read(pumpRunning)) [L77] COND TRUE \read(systemActive) [L125] int tmp ; [L128] COND FALSE !(\read(pumpRunning)) [L99] int tmp ; [L102] COND FALSE !(\read(pumpRunning)) [L338] int tmp ; [L339] int tmp___0 ; [L340] int tmp___1 ; [L875] int retValue_acc ; [L878] retValue_acc = methaneLevelCritical [L879] return (retValue_acc); [L344] tmp = isMethaneLevelCritical() [L346] COND FALSE !(\read(tmp)) [L907] int retValue_acc ; [L910] retValue_acc = waterLevel [L911] return (retValue_acc); [L350] tmp___0 = getWaterLevel() [L352] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:10:37,361 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...