./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product12.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_product12.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 cf530681c562daa6fa9ab5223cf4d9c859dac38d .................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:07:52,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:07:52,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:07:52,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:07:52,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:07:52,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:07:52,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:07:52,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:07:52,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:07:52,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:07:52,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:07:52,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:07:52,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:07:52,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:07:52,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:07:52,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:07:52,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:07:52,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:07:52,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:07:52,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:07:52,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:07:52,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:07:52,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:07:52,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:07:52,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:07:52,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:07:52,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:07:52,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:07:52,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:07:52,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:07:52,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:07:52,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:07:52,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:07:52,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:07:52,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:07:52,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:07:52,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:07:52,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:07:52,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:07:52,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:07:52,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:07:52,181 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:07:52,202 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:07:52,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:07:52,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:07:52,203 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:07:52,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:07:52,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:07:52,206 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:07:52,206 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:07:52,206 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:07:52,206 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:07:52,207 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:07:52,207 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:07:52,207 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:07:52,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:07:52,207 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:07:52,207 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:07:52,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:07:52,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:07:52,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:07:52,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:07:52,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:07:52,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:07:52,208 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:07:52,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:07:52,209 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:07:52,209 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:07:52,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:07:52,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:07:52,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:07:52,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:07:52,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:07:52,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:07:52,210 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:07:52,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf530681c562daa6fa9ab5223cf4d9c859dac38d [2021-08-27 16:07:52,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:07:52,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:07:52,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:07:52,490 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:07:52,491 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:07:52,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product12.cil.c [2021-08-27 16:07:52,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f61c19c11/d3ace795629244adae5e0d6381c0ab82/FLAG6fbb55d1c [2021-08-27 16:07:52,941 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:07:52,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product12.cil.c [2021-08-27 16:07:52,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f61c19c11/d3ace795629244adae5e0d6381c0ab82/FLAG6fbb55d1c [2021-08-27 16:07:52,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f61c19c11/d3ace795629244adae5e0d6381c0ab82 [2021-08-27 16:07:52,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:07:52,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:07:52,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:07:52,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:07:52,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:07:52,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:07:52" (1/1) ... [2021-08-27 16:07:52,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a45d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:52, skipping insertion in model container [2021-08-27 16:07:52,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:07:52" (1/1) ... [2021-08-27 16:07:52,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:07:53,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:07:53,235 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_product12.cil.c[17035,17048] [2021-08-27 16:07:53,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:07:53,271 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:07:53,344 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_product12.cil.c[17035,17048] [2021-08-27 16:07:53,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:07:53,356 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:07:53,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:53 WrapperNode [2021-08-27 16:07:53,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:07:53,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:07:53,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:07:53,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:07:53,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:53" (1/1) ... [2021-08-27 16:07:53,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:53" (1/1) ... [2021-08-27 16:07:53,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:07:53,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:07:53,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:07:53,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:07:53,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:53" (1/1) ... [2021-08-27 16:07:53,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:53" (1/1) ... [2021-08-27 16:07:53,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:53" (1/1) ... [2021-08-27 16:07:53,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:53" (1/1) ... [2021-08-27 16:07:53,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:53" (1/1) ... [2021-08-27 16:07:53,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:53" (1/1) ... [2021-08-27 16:07:53,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:53" (1/1) ... [2021-08-27 16:07:53,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:07:53,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:07:53,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:07:53,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:07:53,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:53" (1/1) ... [2021-08-27 16:07:53,450 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:07:53,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:07:53,468 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 16:07:53,473 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 16:07:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:07:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:07:53,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:07:53,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:07:53,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:07:53,997 INFO L299 CfgBuilder]: Removed 78 assume(true) statements. [2021-08-27 16:07:53,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:07:53 BoogieIcfgContainer [2021-08-27 16:07:53,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:07:54,001 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:07:54,001 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:07:54,003 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:07:54,003 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:07:54,004 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:07:52" (1/3) ... [2021-08-27 16:07:54,005 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14e023af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:07:54, skipping insertion in model container [2021-08-27 16:07:54,005 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:07:54,005 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:53" (2/3) ... [2021-08-27 16:07:54,005 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14e023af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:07:54, skipping insertion in model container [2021-08-27 16:07:54,005 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:07:54,005 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:07:53" (3/3) ... [2021-08-27 16:07:54,006 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product12.cil.c [2021-08-27 16:07:54,039 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:07:54,040 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:07:54,040 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:07:54,040 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:07:54,040 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:07:54,040 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:07:54,040 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:07:54,040 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:07:54,051 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 62 states, 61 states have (on average 1.5245901639344261) internal successors, (93), 61 states have internal predecessors, (93), 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 16:07:54,071 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 39 [2021-08-27 16:07:54,072 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:07:54,072 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:07:54,076 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:07:54,077 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:07:54,077 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:07:54,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 62 states, 61 states have (on average 1.5245901639344261) internal successors, (93), 61 states have internal predecessors, (93), 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 16:07:54,085 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 39 [2021-08-27 16:07:54,085 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:07:54,085 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:07:54,086 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:07:54,086 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:07:54,094 INFO L791 eck$LassoCheckResult]: Stem: 50#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);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(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 37#L-1true havoc main_#res;havoc main_#t~ret78, main_~retValue_acc~9, main_~tmp~6;havoc main_~retValue_acc~9;havoc main_~tmp~6; 56#L413true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 29#L421true main_#t~ret78 := valid_product_#res;main_~tmp~6 := main_#t~ret78;havoc main_#t~ret78; 13#L874true assume 0 != main_~tmp~6; 14#L851true havoc test_#t~nondet10, test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 40#L61-1true [2021-08-27 16:07:54,094 INFO L793 eck$LassoCheckResult]: Loop: 40#L61-1true assume !false; 9#L97true assume test_~splverifierCounter~0 < 4; 33#L98true test_~tmp~1 := test_#t~nondet10;havoc test_#t~nondet10; 48#L106true assume !(0 != test_~tmp~1); 42#L106-1true test_~tmp___0~1 := test_#t~nondet11;havoc test_#t~nondet11; 28#L116true assume !(0 != test_~tmp___0~1); 31#L116-1true test_~tmp___2~0 := test_#t~nondet12;havoc test_#t~nondet12; 5#L126true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 46#L134-1true assume !(0 != ~pumpRunning~0); 18#L167true assume !(0 != ~systemActive~0); 59#L174true havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 4#L351true __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 58#L55true assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 40#L61-1true [2021-08-27 16:07:54,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:54,099 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:07:54,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:54,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754301503] [2021-08-27 16:07:54,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:54,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:54,271 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:07:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:54,376 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:07:54,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:54,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1672941121, now seen corresponding path program 1 times [2021-08-27 16:07:54,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:54,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398749221] [2021-08-27 16:07:54,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:54,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:07:54,429 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 16:07:54,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:07:54,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398749221] [2021-08-27 16:07:54,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398749221] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:07:54,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:07:54,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:07:54,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347185164] [2021-08-27 16:07:54,433 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:07:54,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:07:54,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:07:54,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:07:54,454 INFO L87 Difference]: Start difference. First operand has 62 states, 61 states have (on average 1.5245901639344261) internal successors, (93), 61 states have internal predecessors, (93), 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 16:07:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:07:54,514 INFO L93 Difference]: Finished difference Result 118 states and 162 transitions. [2021-08-27 16:07:54,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:07:54,515 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 162 transitions. [2021-08-27 16:07:54,517 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 74 [2021-08-27 16:07:54,521 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 104 states and 147 transitions. [2021-08-27 16:07:54,522 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2021-08-27 16:07:54,522 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 104 [2021-08-27 16:07:54,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 147 transitions. [2021-08-27 16:07:54,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:07:54,523 INFO L681 BuchiCegarLoop]: Abstraction has 104 states and 147 transitions. [2021-08-27 16:07:54,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 147 transitions. [2021-08-27 16:07:54,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2021-08-27 16:07:54,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 102 states have (on average 1.411764705882353) internal successors, (144), 101 states have internal predecessors, (144), 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 16:07:54,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 144 transitions. [2021-08-27 16:07:54,560 INFO L704 BuchiCegarLoop]: Abstraction has 102 states and 144 transitions. [2021-08-27 16:07:54,560 INFO L587 BuchiCegarLoop]: Abstraction has 102 states and 144 transitions. [2021-08-27 16:07:54,560 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:07:54,560 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 102 states and 144 transitions. [2021-08-27 16:07:54,561 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 72 [2021-08-27 16:07:54,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:07:54,562 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:07:54,562 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:07:54,562 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:07:54,562 INFO L791 eck$LassoCheckResult]: Stem: 252#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);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(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 242#L-1 havoc main_#res;havoc main_#t~ret78, main_~retValue_acc~9, main_~tmp~6;havoc main_~retValue_acc~9;havoc main_~tmp~6; 243#L413 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 235#L421 main_#t~ret78 := valid_product_#res;main_~tmp~6 := main_#t~ret78;havoc main_#t~ret78; 209#L874 assume 0 != main_~tmp~6; 210#L851 havoc test_#t~nondet10, test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 211#L61-1 [2021-08-27 16:07:54,562 INFO L793 eck$LassoCheckResult]: Loop: 211#L61-1 assume !false; 202#L97 assume test_~splverifierCounter~0 < 4; 203#L98 test_~tmp~1 := test_#t~nondet10;havoc test_#t~nondet10; 239#L106 assume !(0 != test_~tmp~1); 229#L106-1 test_~tmp___0~1 := test_#t~nondet11;havoc test_#t~nondet11; 247#L116 assume !(0 != test_~tmp___0~1); 286#L116-1 test_~tmp___2~0 := test_#t~nondet12;havoc test_#t~nondet12; 285#L126 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 192#L134-1 assume !(0 != ~pumpRunning~0); 214#L167 assume 0 != ~systemActive~0; 215#L174 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 189#L351 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 190#L55 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 211#L61-1 [2021-08-27 16:07:54,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:54,563 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:07:54,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:54,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556532334] [2021-08-27 16:07:54,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:54,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:54,592 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:07:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:54,625 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:07:54,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:54,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1673030494, now seen corresponding path program 1 times [2021-08-27 16:07:54,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:54,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100199128] [2021-08-27 16:07:54,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:54,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:54,629 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:07:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:54,633 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:07:54,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:54,633 INFO L82 PathProgramCache]: Analyzing trace with hash 41248444, now seen corresponding path program 1 times [2021-08-27 16:07:54,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:54,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076920115] [2021-08-27 16:07:54,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:54,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:07:54,700 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 16:07:54,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:07:54,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076920115] [2021-08-27 16:07:54,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076920115] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:07:54,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:07:54,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:07:54,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44021348] [2021-08-27 16:07:54,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:07:54,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:07:54,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:07:54,819 INFO L87 Difference]: Start difference. First operand 102 states and 144 transitions. cyclomatic complexity: 45 Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 16:07:54,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:07:54,912 INFO L93 Difference]: Finished difference Result 319 states and 461 transitions. [2021-08-27 16:07:54,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:07:54,913 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 319 states and 461 transitions. [2021-08-27 16:07:54,923 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 240 [2021-08-27 16:07:54,927 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 319 states to 319 states and 461 transitions. [2021-08-27 16:07:54,927 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 319 [2021-08-27 16:07:54,927 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 319 [2021-08-27 16:07:54,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 319 states and 461 transitions. [2021-08-27 16:07:54,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:07:54,930 INFO L681 BuchiCegarLoop]: Abstraction has 319 states and 461 transitions. [2021-08-27 16:07:54,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states and 461 transitions. [2021-08-27 16:07:54,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 198. [2021-08-27 16:07:54,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 198 states have (on average 1.3838383838383839) internal successors, (274), 197 states have internal predecessors, (274), 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 16:07:54,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 274 transitions. [2021-08-27 16:07:54,943 INFO L704 BuchiCegarLoop]: Abstraction has 198 states and 274 transitions. [2021-08-27 16:07:54,943 INFO L587 BuchiCegarLoop]: Abstraction has 198 states and 274 transitions. [2021-08-27 16:07:54,943 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:07:54,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 198 states and 274 transitions. [2021-08-27 16:07:54,944 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 144 [2021-08-27 16:07:54,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:07:54,944 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:07:54,944 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:07:54,945 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:07:54,945 INFO L791 eck$LassoCheckResult]: Stem: 700#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);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(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(13);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string35.base, #t~string35.offset, 1);call write~init~int(77, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(101, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(116, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(104, #t~string35.base, 4 + #t~string35.offset, 1);call write~init~int(58, #t~string35.base, 5 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 6 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string37.base, #t~string37.offset, 1);call write~init~int(82, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(73, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(84, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 4 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string39.base, #t~string39.offset, 1);call write~init~int(75, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 686#L-1 havoc main_#res;havoc main_#t~ret78, main_~retValue_acc~9, main_~tmp~6;havoc main_~retValue_acc~9;havoc main_~tmp~6; 687#L413 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 676#L421 main_#t~ret78 := valid_product_#res;main_~tmp~6 := main_#t~ret78;havoc main_#t~ret78; 648#L874 assume 0 != main_~tmp~6; 649#L851 havoc test_#t~nondet10, test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 650#L61-1 [2021-08-27 16:07:54,945 INFO L793 eck$LassoCheckResult]: Loop: 650#L61-1 assume !false; 770#L97 assume test_~splverifierCounter~0 < 4; 771#L98 test_~tmp~1 := test_#t~nondet10;havoc test_#t~nondet10; 797#L106 assume !(0 != test_~tmp~1); 794#L106-1 test_~tmp___0~1 := test_#t~nondet11;havoc test_#t~nondet11; 792#L116 assume !(0 != test_~tmp___0~1); 789#L116-1 test_~tmp___2~0 := test_#t~nondet12;havoc test_#t~nondet12; 788#L126 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 782#L134-1 assume !(0 != ~pumpRunning~0); 779#L167 assume 0 != ~systemActive~0; 778#L174 havoc __utac_acc__Specification3_spec__1_#t~ret7, __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 777#L351 __utac_acc__Specification3_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret7;havoc __utac_acc__Specification3_spec__1_#t~ret7; 776#L55 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~0);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~3;havoc getWaterLevel_~retValue_acc~3;getWaterLevel_~retValue_acc~3 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~3; 775#L383 __utac_acc__Specification3_spec__1_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 773#L61 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 650#L61-1 [2021-08-27 16:07:54,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:54,945 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:07:54,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:54,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097090881] [2021-08-27 16:07:54,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:54,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:54,967 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:07:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:54,993 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:07:54,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:54,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1464530636, now seen corresponding path program 1 times [2021-08-27 16:07:54,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:54,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818113396] [2021-08-27 16:07:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:54,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:55,000 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:07:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:55,005 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:07:55,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:55,005 INFO L82 PathProgramCache]: Analyzing trace with hash 985054414, now seen corresponding path program 1 times [2021-08-27 16:07:55,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:55,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825781768] [2021-08-27 16:07:55,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:55,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:55,028 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:07:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:55,060 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:33,889 WARN L207 SmtUtils]: Spent 38.70 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:09:15,121 WARN L207 SmtUtils]: Spent 19.93 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:09:15,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:09:15 BoogieIcfgContainer [2021-08-27 16:09:15,246 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:09:15,247 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:09:15,247 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:09:15,247 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:09:15,248 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:07:53" (3/4) ... [2021-08-27 16:09:15,250 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:09:15,300 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:09:15,300 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:09:15,301 INFO L168 Benchmark]: Toolchain (without parser) took 82331.95 ms. Allocated memory was 58.7 MB in the beginning and 121.6 MB in the end (delta: 62.9 MB). Free memory was 37.1 MB in the beginning and 29.6 MB in the end (delta: 7.5 MB). Peak memory consumption was 69.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:15,302 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 41.3 MB in the end (delta: 73.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:09:15,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.26 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 36.9 MB in the beginning and 53.9 MB in the end (delta: -17.0 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:15,302 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.54 ms. Allocated memory is still 75.5 MB. Free memory was 53.9 MB in the beginning and 51.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:15,303 INFO L168 Benchmark]: Boogie Preprocessor took 32.23 ms. Allocated memory is still 75.5 MB. Free memory was 51.1 MB in the beginning and 49.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:15,303 INFO L168 Benchmark]: RCFGBuilder took 554.18 ms. Allocated memory is still 75.5 MB. Free memory was 49.3 MB in the beginning and 41.6 MB in the end (delta: 7.7 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:15,303 INFO L168 Benchmark]: BuchiAutomizer took 81245.50 ms. Allocated memory was 75.5 MB in the beginning and 121.6 MB in the end (delta: 46.1 MB). Free memory was 41.2 MB in the beginning and 32.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 66.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:15,303 INFO L168 Benchmark]: Witness Printer took 53.67 ms. Allocated memory is still 121.6 MB. Free memory was 31.7 MB in the beginning and 29.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:15,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 41.3 MB in the end (delta: 73.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 386.26 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 36.9 MB in the beginning and 53.9 MB in the end (delta: -17.0 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.54 ms. Allocated memory is still 75.5 MB. Free memory was 53.9 MB in the beginning and 51.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.23 ms. Allocated memory is still 75.5 MB. Free memory was 51.1 MB in the beginning and 49.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 554.18 ms. Allocated memory is still 75.5 MB. Free memory was 49.3 MB in the beginning and 41.6 MB in the end (delta: 7.7 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 81245.50 ms. Allocated memory was 75.5 MB in the beginning and 121.6 MB in the end (delta: 46.1 MB). Free memory was 41.2 MB in the beginning and 32.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 66.2 MB. Max. memory is 16.1 GB. * Witness Printer took 53.67 ms. Allocated memory is still 121.6 MB. Free memory was 31.7 MB in the beginning and 29.6 MB in the end (delta: 2.1 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 198 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 81.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 80.8s. 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 41.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 123 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 198 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 186 SDtfs, 347 SDslu, 361 SDs, 0 SdLazy, 53 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 60.4ms 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: 96]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72263c99=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@60da19b8=0, NULL=15945, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@314a84e1=0, NULL=0, NULL=0, NULL=15943, retValue_acc=0, NULL=15946, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@656d229=0, NULL=15932, methaneLevelCritical=0, NULL=15942, NULL=0, NULL=15947, NULL=15933, NULL=0, tmp___1=0, NULL=15936, NULL=15930, NULL=0, NULL=0, tmp___0=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7a51e727=0, NULL=15952, tmp=0, cleanupTimeShifts=4, tmp=0, NULL=15939, NULL=15931, NULL=15948, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, \result=1, retValue_acc=0, retValue_acc=1, NULL=15927, \result=1, head=0, pumpRunning=0, \result=0, NULL=15940, NULL=15953, NULL=0, NULL=15941, NULL=0, NULL=0, NULL=0, tmp=1, NULL=15935, NULL=0, retValue_acc=1, NULL=15954, NULL=0, NULL=0, NULL=15951, NULL=0, NULL=0, NULL=15928, tmp___2=85, NULL=0, tmp___0=0, splverifierCounter=0, NULL=0, \result=0, NULL=15950, NULL=15929, NULL=15944, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@238f2639=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@663743a6=85, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36a6d59f=0, head=0, NULL=15949, NULL=15934, NULL=0, NULL=0, NULL=0, NULL=15937, NULL=15938} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L160] int pumpRunning = 0; [L161] int systemActive = 1; [L308] int waterLevel = 1; [L309] int methaneLevelCritical = 0; [L595] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L792] int cleanupTimeShifts = 4; [L865] int retValue_acc ; [L866] int tmp ; [L417] int retValue_acc ; [L420] retValue_acc = 1 [L421] return (retValue_acc); [L872] tmp = valid_product() [L874] COND TRUE \read(tmp) [L87] int splverifierCounter ; [L88] int tmp ; [L89] int tmp___0 ; [L90] int tmp___1 ; [L91] int tmp___2 ; [L94] splverifierCounter = 0 Loop: [L96] COND TRUE 1 [L98] COND TRUE splverifierCounter < 4 [L104] tmp = __VERIFIER_nondet_int() [L106] COND FALSE !(\read(tmp)) [L114] tmp___0 = __VERIFIER_nondet_int() [L116] COND FALSE !(\read(tmp___0)) [L124] tmp___2 = __VERIFIER_nondet_int() [L126] COND TRUE \read(tmp___2) [L303] systemActive = 1 [L167] COND FALSE !(\read(pumpRunning)) [L174] COND TRUE \read(systemActive) [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L347] int retValue_acc ; [L350] retValue_acc = methaneLevelCritical [L351] return (retValue_acc); [L53] tmp = isMethaneLevelCritical() [L55] COND FALSE !(\read(tmp)) [L379] int retValue_acc ; [L382] retValue_acc = waterLevel [L383] return (retValue_acc); [L59] tmp___0 = getWaterLevel() [L61] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:09:15,357 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...