./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product56.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_spec1_product56.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d89cb30057b8721685c80693144eb2455c18c87 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:58:31,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:58:31,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:58:31,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:58:31,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:58:31,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:58:31,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:58:31,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:58:31,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:58:31,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:58:31,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:58:31,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:58:31,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:58:31,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:58:31,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:58:31,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:58:31,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:58:31,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:58:31,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:58:31,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:58:31,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:58:31,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:58:31,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:58:31,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:58:31,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:58:31,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:58:31,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:58:31,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:58:31,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:58:31,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:58:31,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:58:31,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:58:31,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:58:31,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:58:31,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:58:31,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:58:31,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:58:31,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:58:31,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:58:31,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:58:31,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:58:31,400 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:58:31,443 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:58:31,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:58:31,444 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:58:31,444 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:58:31,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:58:31,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:58:31,446 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:58:31,447 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:58:31,447 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:58:31,447 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:58:31,448 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:58:31,448 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:58:31,448 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:58:31,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:58:31,449 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:58:31,449 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:58:31,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:58:31,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:58:31,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:58:31,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:58:31,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:58:31,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:58:31,450 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:58:31,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:58:31,450 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:58:31,451 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:58:31,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:58:31,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:58:31,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:58:31,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:58:31,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:58:31,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:58:31,453 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:58:31,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d89cb30057b8721685c80693144eb2455c18c87 [2021-08-27 15:58:31,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:58:31,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:58:31,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:58:31,772 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:58:31,773 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:58:31,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c [2021-08-27 15:58:31,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32730968c/5182ddd1b6c4442a8cf924c3109edd64/FLAG5e5653faf [2021-08-27 15:58:32,266 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:58:32,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c [2021-08-27 15:58:32,284 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32730968c/5182ddd1b6c4442a8cf924c3109edd64/FLAG5e5653faf [2021-08-27 15:58:32,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32730968c/5182ddd1b6c4442a8cf924c3109edd64 [2021-08-27 15:58:32,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:58:32,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:58:32,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:58:32,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:58:32,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:58:32,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:58:32" (1/1) ... [2021-08-27 15:58:32,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61852171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:32, skipping insertion in model container [2021-08-27 15:58:32,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:58:32" (1/1) ... [2021-08-27 15:58:32,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:58:32,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:58:32,552 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_spec1_product56.cil.c[16355,16368] [2021-08-27 15:58:32,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:58:32,571 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:58:32,620 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_spec1_product56.cil.c[16355,16368] [2021-08-27 15:58:32,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:58:32,663 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:58:32,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:32 WrapperNode [2021-08-27 15:58:32,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:58:32,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:58:32,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:58:32,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:58:32,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:32" (1/1) ... [2021-08-27 15:58:32,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:32" (1/1) ... [2021-08-27 15:58:32,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:58:32,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:58:32,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:58:32,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:58:32,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:32" (1/1) ... [2021-08-27 15:58:32,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:32" (1/1) ... [2021-08-27 15:58:32,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:32" (1/1) ... [2021-08-27 15:58:32,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:32" (1/1) ... [2021-08-27 15:58:32,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:32" (1/1) ... [2021-08-27 15:58:32,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:32" (1/1) ... [2021-08-27 15:58:32,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:32" (1/1) ... [2021-08-27 15:58:32,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:58:32,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:58:32,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:58:32,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:58:32,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:32" (1/1) ... [2021-08-27 15:58:32,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:58:32,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:58:32,823 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 15:58:32,837 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 15:58:32,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:58:32,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:58:32,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:58:32,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:58:33,816 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:58:33,817 INFO L299 CfgBuilder]: Removed 282 assume(true) statements. [2021-08-27 15:58:33,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:58:33 BoogieIcfgContainer [2021-08-27 15:58:33,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:58:33,821 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:58:33,821 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:58:33,824 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:58:33,825 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:58:33,825 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:58:32" (1/3) ... [2021-08-27 15:58:33,826 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@70701c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:58:33, skipping insertion in model container [2021-08-27 15:58:33,826 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:58:33,826 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:32" (2/3) ... [2021-08-27 15:58:33,827 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@70701c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:58:33, skipping insertion in model container [2021-08-27 15:58:33,827 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:58:33,827 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:58:33" (3/3) ... [2021-08-27 15:58:33,828 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product56.cil.c [2021-08-27 15:58:33,864 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:58:33,864 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:58:33,865 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:58:33,865 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:58:33,865 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:58:33,865 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:58:33,865 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:58:33,865 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:58:33,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 188 states, 187 states have (on average 1.5401069518716577) internal successors, (288), 187 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 15:58:33,917 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 123 [2021-08-27 15:58:33,918 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:33,918 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:33,924 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:33,924 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:58:33,925 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:58:33,926 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 188 states, 187 states have (on average 1.5401069518716577) internal successors, (288), 187 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 15:58:33,934 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 123 [2021-08-27 15:58:33,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:33,934 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:33,935 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:33,935 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:58:33,939 INFO L791 eck$LassoCheckResult]: Stem: 167#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 52#L-1true havoc main_#res;havoc main_#t~ret71, main_~retValue_acc~9, main_~tmp~10;havoc main_~retValue_acc~9;havoc main_~tmp~10; 179#L764true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 5#L772true main_#t~ret71 := valid_product_#res;main_~tmp~10 := main_#t~ret71;havoc main_#t~ret71; 102#L895true assume 0 != main_~tmp~10; 107#L872true havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 165#L786-1true [2021-08-27 15:58:33,940 INFO L793 eck$LassoCheckResult]: Loop: 165#L786-1true assume !false; 147#L425true assume test_~splverifierCounter~0 < 4; 158#L426true test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 19#L434true assume !(0 != test_~tmp~3); 169#L434-1true test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 136#L444true assume !(0 != test_~tmp___0~0); 7#L444-1true test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 6#L454true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 160#L462-1true assume !(0 != ~pumpRunning~0); 163#L500true assume !(0 != ~systemActive~0); 26#L507true havoc __utac_acc__Specification1_spec__1_#t~ret69, __utac_acc__Specification1_spec__1_#t~ret70, __utac_acc__Specification1_spec__1_~tmp~9, __utac_acc__Specification1_spec__1_~tmp___0~3;havoc __utac_acc__Specification1_spec__1_~tmp~9;havoc __utac_acc__Specification1_spec__1_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 116#L953-1true __utac_acc__Specification1_spec__1_#t~ret69 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~9 := __utac_acc__Specification1_spec__1_#t~ret69;havoc __utac_acc__Specification1_spec__1_#t~ret69; 18#L786true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~9); 165#L786-1true [2021-08-27 15:58:33,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:33,945 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 15:58:33,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:33,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541174103] [2021-08-27 15:58:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:33,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:34,157 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:34,289 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:34,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:34,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1666938228, now seen corresponding path program 1 times [2021-08-27 15:58:34,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:34,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542471206] [2021-08-27 15:58:34,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:34,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:58:34,348 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 15:58:34,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:58:34,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542471206] [2021-08-27 15:58:34,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542471206] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:58:34,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:58:34,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:58:34,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156998018] [2021-08-27 15:58:34,354 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:58:34,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:58:34,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:58:34,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:58:34,367 INFO L87 Difference]: Start difference. First operand has 188 states, 187 states have (on average 1.5401069518716577) internal successors, (288), 187 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) 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 15:58:34,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:58:34,422 INFO L93 Difference]: Finished difference Result 370 states and 552 transitions. [2021-08-27 15:58:34,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:58:34,423 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 370 states and 552 transitions. [2021-08-27 15:58:34,430 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 242 [2021-08-27 15:58:34,437 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 370 states to 356 states and 537 transitions. [2021-08-27 15:58:34,437 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 356 [2021-08-27 15:58:34,439 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 356 [2021-08-27 15:58:34,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 356 states and 537 transitions. [2021-08-27 15:58:34,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:58:34,442 INFO L681 BuchiCegarLoop]: Abstraction has 356 states and 537 transitions. [2021-08-27 15:58:34,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states and 537 transitions. [2021-08-27 15:58:34,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 354. [2021-08-27 15:58:34,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 354 states have (on average 1.5084745762711864) internal successors, (534), 353 states have internal predecessors, (534), 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 15:58:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 534 transitions. [2021-08-27 15:58:34,483 INFO L704 BuchiCegarLoop]: Abstraction has 354 states and 534 transitions. [2021-08-27 15:58:34,483 INFO L587 BuchiCegarLoop]: Abstraction has 354 states and 534 transitions. [2021-08-27 15:58:34,483 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:58:34,483 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 354 states and 534 transitions. [2021-08-27 15:58:34,487 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 240 [2021-08-27 15:58:34,488 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:34,488 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:34,488 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:34,488 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:58:34,489 INFO L791 eck$LassoCheckResult]: Stem: 788#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 657#L-1 havoc main_#res;havoc main_#t~ret71, main_~retValue_acc~9, main_~tmp~10;havoc main_~retValue_acc~9;havoc main_~tmp~10; 658#L764 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 569#L772 main_#t~ret71 := valid_product_#res;main_~tmp~10 := main_#t~ret71;havoc main_#t~ret71; 570#L895 assume 0 != main_~tmp~10; 725#L872 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 730#L786-1 [2021-08-27 15:58:34,489 INFO L793 eck$LassoCheckResult]: Loop: 730#L786-1 assume !false; 787#L425 assume test_~splverifierCounter~0 < 4; 870#L426 test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 897#L434 assume !(0 != test_~tmp~3); 895#L434-1 test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 894#L444 assume !(0 != test_~tmp___0~0); 892#L444-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 891#L454 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 572#L462-1 assume !(0 != ~pumpRunning~0); 785#L500 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret48, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 786#L584 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret47, processEnvironment__wrappee__lowWaterSensor_~tmp~5;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~5; 770#L558-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret46, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 772#L532-3 assume !(0 == ~pumpRunning~0); 614#L507 havoc __utac_acc__Specification1_spec__1_#t~ret69, __utac_acc__Specification1_spec__1_#t~ret70, __utac_acc__Specification1_spec__1_~tmp~9, __utac_acc__Specification1_spec__1_~tmp___0~3;havoc __utac_acc__Specification1_spec__1_~tmp~9;havoc __utac_acc__Specification1_spec__1_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 615#L953-1 __utac_acc__Specification1_spec__1_#t~ret69 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~9 := __utac_acc__Specification1_spec__1_#t~ret69;havoc __utac_acc__Specification1_spec__1_#t~ret69; 872#L786 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~9); 730#L786-1 [2021-08-27 15:58:34,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:34,490 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 15:58:34,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:34,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926437066] [2021-08-27 15:58:34,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:34,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:34,556 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:34,650 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:34,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:34,653 INFO L82 PathProgramCache]: Analyzing trace with hash 558894454, now seen corresponding path program 1 times [2021-08-27 15:58:34,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:34,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396262194] [2021-08-27 15:58:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:34,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:58:34,675 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 15:58:34,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:58:34,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396262194] [2021-08-27 15:58:34,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396262194] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:58:34,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:58:34,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:58:34,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208616788] [2021-08-27 15:58:34,681 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:58:34,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:58:34,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:58:34,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:58:34,684 INFO L87 Difference]: Start difference. First operand 354 states and 534 transitions. cyclomatic complexity: 183 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 15:58:34,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:58:34,836 INFO L93 Difference]: Finished difference Result 365 states and 514 transitions. [2021-08-27 15:58:34,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:58:34,837 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 365 states and 514 transitions. [2021-08-27 15:58:34,841 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 255 [2021-08-27 15:58:34,843 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 365 states to 365 states and 514 transitions. [2021-08-27 15:58:34,843 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 365 [2021-08-27 15:58:34,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 365 [2021-08-27 15:58:34,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 365 states and 514 transitions. [2021-08-27 15:58:34,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:58:34,846 INFO L681 BuchiCegarLoop]: Abstraction has 365 states and 514 transitions. [2021-08-27 15:58:34,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states and 514 transitions. [2021-08-27 15:58:34,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2021-08-27 15:58:34,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 365 states have (on average 1.4082191780821918) internal successors, (514), 364 states have internal predecessors, (514), 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 15:58:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 514 transitions. [2021-08-27 15:58:34,884 INFO L704 BuchiCegarLoop]: Abstraction has 365 states and 514 transitions. [2021-08-27 15:58:34,884 INFO L587 BuchiCegarLoop]: Abstraction has 365 states and 514 transitions. [2021-08-27 15:58:34,884 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:58:34,884 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 365 states and 514 transitions. [2021-08-27 15:58:34,887 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 255 [2021-08-27 15:58:34,887 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:34,887 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:34,888 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:34,888 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:58:34,888 INFO L791 eck$LassoCheckResult]: Stem: 1471#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1358#L-1 havoc main_#res;havoc main_#t~ret71, main_~retValue_acc~9, main_~tmp~10;havoc main_~retValue_acc~9;havoc main_~tmp~10; 1359#L764 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 1297#L772 main_#t~ret71 := valid_product_#res;main_~tmp~10 := main_#t~ret71;havoc main_#t~ret71; 1298#L895 assume 0 != main_~tmp~10; 1418#L872 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1316#L786-1 [2021-08-27 15:58:34,888 INFO L793 eck$LassoCheckResult]: Loop: 1316#L786-1 assume !false; 1449#L425 assume test_~splverifierCounter~0 < 4; 1450#L426 test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 1318#L434 assume !(0 != test_~tmp~3); 1320#L434-1 test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 1444#L444 assume !(0 != test_~tmp___0~0); 1430#L444-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 1294#L454 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1295#L462-1 assume !(0 != ~pumpRunning~0); 1463#L500 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret48, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 1380#L584 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret47, processEnvironment__wrappee__lowWaterSensor_~tmp~5;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~5; 1381#L558-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret46, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 1396#L532-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret66, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 1397#L993-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 1388#L998-3 isHighWaterLevel_#t~ret66 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret66;havoc isHighWaterLevel_#t~ret66; 1389#L686-9 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 1362#L686-11 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 1363#L692-3 processEnvironment__wrappee__highWaterSensor_#t~ret46 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret46;havoc processEnvironment__wrappee__highWaterSensor_#t~ret46; 1415#L536-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 1402#L507 havoc __utac_acc__Specification1_spec__1_#t~ret69, __utac_acc__Specification1_spec__1_#t~ret70, __utac_acc__Specification1_spec__1_~tmp~9, __utac_acc__Specification1_spec__1_~tmp___0~3;havoc __utac_acc__Specification1_spec__1_~tmp~9;havoc __utac_acc__Specification1_spec__1_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 1426#L953-1 __utac_acc__Specification1_spec__1_#t~ret69 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~9 := __utac_acc__Specification1_spec__1_#t~ret69;havoc __utac_acc__Specification1_spec__1_#t~ret69; 1315#L786 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~9); 1316#L786-1 [2021-08-27 15:58:34,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:34,889 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 15:58:34,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:34,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418217062] [2021-08-27 15:58:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:34,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:34,930 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:34,962 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:34,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:34,962 INFO L82 PathProgramCache]: Analyzing trace with hash 222495874, now seen corresponding path program 1 times [2021-08-27 15:58:34,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:34,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148217151] [2021-08-27 15:58:34,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:34,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:34,967 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:34,972 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:34,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:34,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1475801000, now seen corresponding path program 1 times [2021-08-27 15:58:34,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:34,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162572595] [2021-08-27 15:58:34,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:34,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:35,017 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:35,091 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:59:18,010 WARN L207 SmtUtils]: Spent 42.67 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:00:01,946 WARN L207 SmtUtils]: Spent 20.79 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:00:02,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:00:02 BoogieIcfgContainer [2021-08-27 16:00:02,062 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:00:02,062 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:00:02,062 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:00:02,062 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:00:02,062 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:58:33" (3/4) ... [2021-08-27 16:00:02,064 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:00:02,103 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:00:02,104 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:00:02,111 INFO L168 Benchmark]: Toolchain (without parser) took 89809.88 ms. Allocated memory was 62.9 MB in the beginning and 113.2 MB in the end (delta: 50.3 MB). Free memory was 41.3 MB in the beginning and 75.9 MB in the end (delta: -34.6 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:02,111 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 43.5 MB in the end (delta: 39.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:00:02,112 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.66 ms. Allocated memory is still 62.9 MB. Free memory was 41.1 MB in the beginning and 37.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:02,112 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.96 ms. Allocated memory is still 62.9 MB. Free memory was 37.0 MB in the beginning and 32.5 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:02,112 INFO L168 Benchmark]: Boogie Preprocessor took 41.34 ms. Allocated memory is still 62.9 MB. Free memory was 32.5 MB in the beginning and 29.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:02,113 INFO L168 Benchmark]: RCFGBuilder took 1031.77 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 29.0 MB in the beginning and 36.1 MB in the end (delta: -7.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:02,113 INFO L168 Benchmark]: BuchiAutomizer took 88240.53 ms. Allocated memory was 75.5 MB in the beginning and 113.2 MB in the end (delta: 37.7 MB). Free memory was 35.7 MB in the beginning and 78.0 MB in the end (delta: -42.3 MB). Peak memory consumption was 57.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:02,114 INFO L168 Benchmark]: Witness Printer took 47.84 ms. Allocated memory is still 113.2 MB. Free memory was 78.0 MB in the beginning and 75.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:02,116 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 62.9 MB. Free memory was 43.5 MB in the beginning and 43.5 MB in the end (delta: 39.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 362.66 ms. Allocated memory is still 62.9 MB. Free memory was 41.1 MB in the beginning and 37.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.96 ms. Allocated memory is still 62.9 MB. Free memory was 37.0 MB in the beginning and 32.5 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.34 ms. Allocated memory is still 62.9 MB. Free memory was 32.5 MB in the beginning and 29.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1031.77 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 29.0 MB in the beginning and 36.1 MB in the end (delta: -7.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 88240.53 ms. Allocated memory was 75.5 MB in the beginning and 113.2 MB in the end (delta: 37.7 MB). Free memory was 35.7 MB in the beginning and 78.0 MB in the end (delta: -42.3 MB). Peak memory consumption was 57.7 MB. Max. memory is 16.1 GB. * Witness Printer took 47.84 ms. Allocated memory is still 113.2 MB. Free memory was 78.0 MB in the beginning and 75.9 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 3 locations. The remainder module has 365 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 88.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 87.7s. Construction of modules took 0.1s. 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 69.2ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 365 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 480 SDtfs, 411 SDslu, 344 SDs, 0 SdLazy, 53 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 103.4ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 424]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=22871} State at position 1 is {NULL=0, NULL=22896, NULL=0, NULL=22871, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22c5b10e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@17c61353=78, NULL=22880, NULL=0, methaneLevelCritical=0, retValue_acc=0, tmp=0, tmp___1=0, NULL=22898, NULL=0, NULL=22879, NULL=22886, cleanupTimeShifts=4, retValue_acc=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@135720e0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@67b9c835=0, NULL=0, waterLevel=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@796e3a68=0, tmp___0=0, \result=1, head=0, pumpRunning=0, NULL=22882, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@46b50b15=0, \result=1, NULL=22875, NULL=0, tmp=0, NULL=0, NULL=22893, NULL=0, tmp=1, NULL=0, NULL=22895, NULL=22889, NULL=22884, NULL=22878, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e5cb12d=0, NULL=0, NULL=0, tmp=0, NULL=22887, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@79e2a4b1=0, NULL=0, NULL=22899, NULL=22894, retValue_acc=0, NULL=22873, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6724737=0, tmp___0=0, NULL=0, tmp=0, NULL=0, NULL=22891, tmp=0, NULL=22885, NULL=22888, tmp___0=0, NULL=22883, NULL=0, NULL=0, NULL=0, systemActive=1, \result=0, NULL=0, NULL=0, NULL=0, NULL=22890, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2394e75e=0, NULL=0, NULL=22892, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2371b6ad=0, NULL=22897, NULL=22874, retValue_acc=1, tmp___2=78, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=22872, NULL=22881, NULL=22877, NULL=22876} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L492] int pumpRunning = 0; [L493] int systemActive = 1; [L813] int cleanupTimeShifts = 4; [L910] int waterLevel = 1; [L911] int methaneLevelCritical = 0; [L886] int retValue_acc ; [L887] int tmp ; [L768] int retValue_acc ; [L771] retValue_acc = 1 [L772] return (retValue_acc); [L893] tmp = valid_product() [L895] COND TRUE \read(tmp) [L415] int splverifierCounter ; [L416] int tmp ; [L417] int tmp___0 ; [L418] int tmp___1 ; [L419] int tmp___2 ; [L422] splverifierCounter = 0 Loop: [L424] COND TRUE 1 [L426] COND TRUE splverifierCounter < 4 [L432] tmp = __VERIFIER_nondet_int() [L434] COND FALSE !(\read(tmp)) [L442] tmp___0 = __VERIFIER_nondet_int() [L444] COND FALSE !(\read(tmp___0)) [L452] tmp___2 = __VERIFIER_nondet_int() [L454] COND TRUE \read(tmp___2) [L734] systemActive = 1 [L500] COND FALSE !(\read(pumpRunning)) [L507] COND TRUE \read(systemActive) [L581] int tmp ; [L584] COND FALSE !(\read(pumpRunning)) [L555] int tmp ; [L558] COND FALSE !(\read(pumpRunning)) [L529] int tmp ; [L532] COND TRUE ! pumpRunning [L678] int retValue_acc ; [L679] int tmp ; [L680] int tmp___0 ; [L990] int retValue_acc ; [L993] COND TRUE waterLevel < 2 [L994] retValue_acc = 1 [L995] return (retValue_acc); [L684] tmp = isHighWaterSensorDry() [L686] COND TRUE \read(tmp) [L687] tmp___0 = 0 [L691] retValue_acc = tmp___0 [L692] return (retValue_acc); [L534] tmp = isHighWaterLevel() [L536] COND FALSE !(\read(tmp)) [L779] int tmp ; [L780] int tmp___0 ; [L949] int retValue_acc ; [L952] retValue_acc = methaneLevelCritical [L953] return (retValue_acc); [L784] tmp = isMethaneLevelCritical() [L786] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:00:02,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...