./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product41.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_spec4_product41.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 08266259dc0ecf0b11540043fa73fc4406b9f127 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 16:17:46,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:17:46,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:17:46,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:17:46,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:17:46,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:17:46,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:17:46,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:17:46,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:17:46,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:17:46,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:17:46,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:17:46,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:17:46,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:17:46,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:17:46,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:17:46,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:17:46,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:17:46,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:17:46,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:17:46,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:17:46,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:17:46,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:17:46,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:17:46,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:17:46,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:17:46,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:17:46,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:17:46,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:17:46,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:17:46,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:17:46,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:17:46,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:17:46,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:17:46,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:17:46,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:17:46,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:17:46,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:17:46,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:17:46,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:17:46,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:17:46,715 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:17:46,751 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:17:46,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:17:46,752 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:17:46,752 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:17:46,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:17:46,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:17:46,754 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:17:46,755 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:17:46,755 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:17:46,755 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:17:46,756 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:17:46,756 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:17:46,756 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:17:46,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:17:46,756 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:17:46,757 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:17:46,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:17:46,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:17:46,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:17:46,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:17:46,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:17:46,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:17:46,758 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:17:46,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:17:46,758 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:17:46,758 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:17:46,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:17:46,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:17:46,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:17:46,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:17:46,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:17:46,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:17:46,760 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:17:46,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08266259dc0ecf0b11540043fa73fc4406b9f127 [2021-08-27 16:17:47,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:17:47,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:17:47,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:17:47,089 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:17:47,091 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:17:47,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c [2021-08-27 16:17:47,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f161be548/3d5d242130c34c79b3b112a0b477077a/FLAG59053cf5b [2021-08-27 16:17:47,664 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:17:47,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product41.cil.c [2021-08-27 16:17:47,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f161be548/3d5d242130c34c79b3b112a0b477077a/FLAG59053cf5b [2021-08-27 16:17:48,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f161be548/3d5d242130c34c79b3b112a0b477077a [2021-08-27 16:17:48,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:17:48,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:17:48,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:17:48,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:17:48,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:17:48,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:17:48" (1/1) ... [2021-08-27 16:17:48,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e356fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:48, skipping insertion in model container [2021-08-27 16:17:48,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:17:48" (1/1) ... [2021-08-27 16:17:48,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:17:48,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:17:48,354 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_spec4_product41.cil.c[3676,3689] [2021-08-27 16:17:48,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:17:48,434 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:17:48,458 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_spec4_product41.cil.c[3676,3689] [2021-08-27 16:17:48,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:17:48,531 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:17:48,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:48 WrapperNode [2021-08-27 16:17:48,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:17:48,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:17:48,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:17:48,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:17:48,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:48" (1/1) ... [2021-08-27 16:17:48,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:48" (1/1) ... [2021-08-27 16:17:48,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:17:48,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:17:48,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:17:48,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:17:48,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:48" (1/1) ... [2021-08-27 16:17:48,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:48" (1/1) ... [2021-08-27 16:17:48,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:48" (1/1) ... [2021-08-27 16:17:48,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:48" (1/1) ... [2021-08-27 16:17:48,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:48" (1/1) ... [2021-08-27 16:17:48,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:48" (1/1) ... [2021-08-27 16:17:48,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:48" (1/1) ... [2021-08-27 16:17:48,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:17:48,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:17:48,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:17:48,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:17:48,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:48" (1/1) ... [2021-08-27 16:17:48,669 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:17:48,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:17:48,694 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 16:17:48,730 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 16:17:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:17:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:17:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:17:48,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:17:49,512 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:17:49,513 INFO L299 CfgBuilder]: Removed 114 assume(true) statements. [2021-08-27 16:17:49,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:17:49 BoogieIcfgContainer [2021-08-27 16:17:49,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:17:49,517 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:17:49,517 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:17:49,520 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:17:49,521 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:17:49,521 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:17:48" (1/3) ... [2021-08-27 16:17:49,522 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16cf2089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:17:49, skipping insertion in model container [2021-08-27 16:17:49,522 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:17:49,522 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:48" (2/3) ... [2021-08-27 16:17:49,523 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16cf2089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:17:49, skipping insertion in model container [2021-08-27 16:17:49,523 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:17:49,523 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:17:49" (3/3) ... [2021-08-27 16:17:49,524 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product41.cil.c [2021-08-27 16:17:49,565 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:17:49,565 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:17:49,566 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:17:49,566 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:17:49,566 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:17:49,566 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:17:49,566 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:17:49,566 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:17:49,579 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 84 states, 83 states have (on average 1.5180722891566265) internal successors, (126), 83 states have internal predecessors, (126), 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 16:17:49,603 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-08-27 16:17:49,603 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:17:49,603 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:17:49,609 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:17:49,610 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:17:49,610 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:17:49,610 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 84 states, 83 states have (on average 1.5180722891566265) internal successors, (126), 83 states have internal predecessors, (126), 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 16:17:49,615 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-08-27 16:17:49,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:17:49,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:17:49,616 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:17:49,616 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:17:49,620 INFO L791 eck$LassoCheckResult]: Stem: 65#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(13);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(80, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(117, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(109, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(112, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(110, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 3 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(32, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 46#L-1true havoc main_#res;havoc main_#t~ret79, main_~retValue_acc~11, main_~tmp~8;havoc main_~retValue_acc~11;havoc main_~tmp~8; 81#L196true havoc valid_product_#res;havoc valid_product_~retValue_acc~4;havoc valid_product_~retValue_acc~4;valid_product_~retValue_acc~4 := 1;valid_product_#res := valid_product_~retValue_acc~4; 47#L204true main_#t~ret79 := valid_product_#res;main_~tmp~8 := main_#t~ret79;havoc main_#t~ret79; 38#L906true assume 0 != main_~tmp~8; 40#L883true havoc test_#t~nondet55, test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 22#L153-1true [2021-08-27 16:17:49,621 INFO L793 eck$LassoCheckResult]: Loop: 22#L153-1true assume !false; 54#L597true assume test_~splverifierCounter~0 < 4; 57#L598true test_~tmp~4 := test_#t~nondet55;havoc test_#t~nondet55; 19#L606true assume !(0 != test_~tmp~4); 83#L606-1true test_~tmp___0~1 := test_#t~nondet56;havoc test_#t~nondet56; 41#L616true assume !(0 != test_~tmp___0~1); 25#L616-1true test_~tmp___2~0 := test_#t~nondet57;havoc test_#t~nondet57; 6#L626true assume 0 != test_~tmp___2~0; 61#L632-2true assume !(0 != ~pumpRunning~0); 50#L661true assume !(0 != ~systemActive~0); 35#L668true havoc __utac_acc__Specification4_spec__1_#t~ret17, __utac_acc__Specification4_spec__1_#t~ret18, __utac_acc__Specification4_spec__1_~tmp~0, __utac_acc__Specification4_spec__1_~tmp___0~0;havoc __utac_acc__Specification4_spec__1_~tmp~0;havoc __utac_acc__Specification4_spec__1_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 18#L124true __utac_acc__Specification4_spec__1_#t~ret17 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~0 := __utac_acc__Specification4_spec__1_#t~ret17;havoc __utac_acc__Specification4_spec__1_#t~ret17; 12#L153true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~0); 22#L153-1true [2021-08-27 16:17:49,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:49,626 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:17:49,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:49,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676463528] [2021-08-27 16:17:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:49,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:49,807 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:49,970 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:49,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:49,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1681191230, now seen corresponding path program 1 times [2021-08-27 16:17:49,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:49,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929000202] [2021-08-27 16:17:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:49,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:49,990 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:50,010 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:50,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:50,014 INFO L82 PathProgramCache]: Analyzing trace with hash 33087708, now seen corresponding path program 1 times [2021-08-27 16:17:50,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:50,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350689042] [2021-08-27 16:17:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:50,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:17:50,155 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 16:17:50,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:17:50,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350689042] [2021-08-27 16:17:50,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350689042] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:17:50,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:17:50,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:17:50,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067636036] [2021-08-27 16:17:50,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:17:50,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:17:50,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:17:50,306 INFO L87 Difference]: Start difference. First operand has 84 states, 83 states have (on average 1.5180722891566265) internal successors, (126), 83 states have internal predecessors, (126), 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 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 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 16:17:50,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:17:50,458 INFO L93 Difference]: Finished difference Result 84 states and 115 transitions. [2021-08-27 16:17:50,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:17:50,460 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 115 transitions. [2021-08-27 16:17:50,462 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-08-27 16:17:50,466 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 77 states and 108 transitions. [2021-08-27 16:17:50,467 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2021-08-27 16:17:50,467 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2021-08-27 16:17:50,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 108 transitions. [2021-08-27 16:17:50,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:17:50,468 INFO L681 BuchiCegarLoop]: Abstraction has 77 states and 108 transitions. [2021-08-27 16:17:50,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 108 transitions. [2021-08-27 16:17:50,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-08-27 16:17:50,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 77 states have (on average 1.4025974025974026) internal successors, (108), 76 states have internal predecessors, (108), 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 16:17:50,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 108 transitions. [2021-08-27 16:17:50,494 INFO L704 BuchiCegarLoop]: Abstraction has 77 states and 108 transitions. [2021-08-27 16:17:50,494 INFO L587 BuchiCegarLoop]: Abstraction has 77 states and 108 transitions. [2021-08-27 16:17:50,494 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:17:50,494 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 77 states and 108 transitions. [2021-08-27 16:17:50,495 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-08-27 16:17:50,495 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:17:50,495 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:17:50,496 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:17:50,496 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:17:50,496 INFO L791 eck$LassoCheckResult]: Stem: 259#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(13);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(80, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(117, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(109, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(112, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(110, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 3 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(32, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 246#L-1 havoc main_#res;havoc main_#t~ret79, main_~retValue_acc~11, main_~tmp~8;havoc main_~retValue_acc~11;havoc main_~tmp~8; 247#L196 havoc valid_product_#res;havoc valid_product_~retValue_acc~4;havoc valid_product_~retValue_acc~4;valid_product_~retValue_acc~4 := 1;valid_product_#res := valid_product_~retValue_acc~4; 248#L204 main_#t~ret79 := valid_product_#res;main_~tmp~8 := main_#t~ret79;havoc main_#t~ret79; 236#L906 assume 0 != main_~tmp~8; 237#L883 havoc test_#t~nondet55, test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 202#L153-1 [2021-08-27 16:17:50,496 INFO L793 eck$LassoCheckResult]: Loop: 202#L153-1 assume !false; 221#L597 assume test_~splverifierCounter~0 < 4; 254#L598 test_~tmp~4 := test_#t~nondet55;havoc test_#t~nondet55; 218#L606 assume !(0 != test_~tmp~4); 220#L606-1 test_~tmp___0~1 := test_#t~nondet56;havoc test_#t~nondet56; 239#L616 assume !(0 != test_~tmp___0~1); 224#L616-1 test_~tmp___2~0 := test_#t~nondet57;havoc test_#t~nondet57; 191#L626 assume 0 != test_~tmp___2~0; 192#L632-2 assume !(0 != ~pumpRunning~0); 249#L661 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret59, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 250#L693 assume !(0 == ~pumpRunning~0); 232#L668 havoc __utac_acc__Specification4_spec__1_#t~ret17, __utac_acc__Specification4_spec__1_#t~ret18, __utac_acc__Specification4_spec__1_~tmp~0, __utac_acc__Specification4_spec__1_~tmp___0~0;havoc __utac_acc__Specification4_spec__1_~tmp~0;havoc __utac_acc__Specification4_spec__1_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 214#L124 __utac_acc__Specification4_spec__1_#t~ret17 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~0 := __utac_acc__Specification4_spec__1_#t~ret17;havoc __utac_acc__Specification4_spec__1_#t~ret17; 205#L153 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~0); 202#L153-1 [2021-08-27 16:17:50,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:50,497 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:17:50,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:50,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608495864] [2021-08-27 16:17:50,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:50,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:50,534 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:50,573 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:50,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:50,573 INFO L82 PathProgramCache]: Analyzing trace with hash -619089829, now seen corresponding path program 1 times [2021-08-27 16:17:50,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:50,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637538746] [2021-08-27 16:17:50,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:50,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:17:50,586 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 16:17:50,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:17:50,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637538746] [2021-08-27 16:17:50,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637538746] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:17:50,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:17:50,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:17:50,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569313257] [2021-08-27 16:17:50,589 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:17:50,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:17:50,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:17:50,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:17:50,590 INFO L87 Difference]: Start difference. First operand 77 states and 108 transitions. cyclomatic complexity: 33 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 16:17:50,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:17:50,641 INFO L93 Difference]: Finished difference Result 118 states and 159 transitions. [2021-08-27 16:17:50,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:17:50,642 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 159 transitions. [2021-08-27 16:17:50,644 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 82 [2021-08-27 16:17:50,645 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 118 states and 159 transitions. [2021-08-27 16:17:50,645 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 118 [2021-08-27 16:17:50,646 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 118 [2021-08-27 16:17:50,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 159 transitions. [2021-08-27 16:17:50,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:17:50,647 INFO L681 BuchiCegarLoop]: Abstraction has 118 states and 159 transitions. [2021-08-27 16:17:50,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 159 transitions. [2021-08-27 16:17:50,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-08-27 16:17:50,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 118 states have (on average 1.347457627118644) internal successors, (159), 117 states have internal predecessors, (159), 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 16:17:50,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 159 transitions. [2021-08-27 16:17:50,653 INFO L704 BuchiCegarLoop]: Abstraction has 118 states and 159 transitions. [2021-08-27 16:17:50,653 INFO L587 BuchiCegarLoop]: Abstraction has 118 states and 159 transitions. [2021-08-27 16:17:50,653 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:17:50,654 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 159 transitions. [2021-08-27 16:17:50,655 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 82 [2021-08-27 16:17:50,655 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:17:50,655 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:17:50,656 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:17:50,656 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] [2021-08-27 16:17:50,656 INFO L791 eck$LassoCheckResult]: Stem: 465#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(13);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(80, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(117, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(109, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(112, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(110, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 3 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(32, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 452#L-1 havoc main_#res;havoc main_#t~ret79, main_~retValue_acc~11, main_~tmp~8;havoc main_~retValue_acc~11;havoc main_~tmp~8; 453#L196 havoc valid_product_#res;havoc valid_product_~retValue_acc~4;havoc valid_product_~retValue_acc~4;valid_product_~retValue_acc~4 := 1;valid_product_#res := valid_product_~retValue_acc~4; 454#L204 main_#t~ret79 := valid_product_#res;main_~tmp~8 := main_#t~ret79;havoc main_#t~ret79; 439#L906 assume 0 != main_~tmp~8; 440#L883 havoc test_#t~nondet55, test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 402#L153-1 [2021-08-27 16:17:50,657 INFO L793 eck$LassoCheckResult]: Loop: 402#L153-1 assume !false; 475#L597 assume test_~splverifierCounter~0 < 4; 476#L598 test_~tmp~4 := test_#t~nondet55;havoc test_#t~nondet55; 484#L606 assume !(0 != test_~tmp~4); 481#L606-1 test_~tmp___0~1 := test_#t~nondet56;havoc test_#t~nondet56; 480#L616 assume !(0 != test_~tmp___0~1); 426#L616-1 test_~tmp___2~0 := test_#t~nondet57;havoc test_#t~nondet57; 390#L626 assume 0 != test_~tmp___2~0; 391#L632-2 assume !(0 != ~pumpRunning~0); 455#L661 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret59, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 456#L693 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret78, isHighWaterLevel_~retValue_acc~10, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~10;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 466#L132 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 469#L137 isHighWaterLevel_#t~ret78 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret78;havoc isHighWaterLevel_#t~ret78; 458#L813 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~2 := 0; 433#L813-2 isHighWaterLevel_~retValue_acc~10 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~10; 434#L819 processEnvironment_#t~ret59 := isHighWaterLevel_#res;processEnvironment_~tmp~5 := processEnvironment_#t~ret59;havoc processEnvironment_#t~ret59; 437#L697 assume !(0 != processEnvironment_~tmp~5); 436#L668 havoc __utac_acc__Specification4_spec__1_#t~ret17, __utac_acc__Specification4_spec__1_#t~ret18, __utac_acc__Specification4_spec__1_~tmp~0, __utac_acc__Specification4_spec__1_~tmp___0~0;havoc __utac_acc__Specification4_spec__1_~tmp~0;havoc __utac_acc__Specification4_spec__1_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 414#L124 __utac_acc__Specification4_spec__1_#t~ret17 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~0 := __utac_acc__Specification4_spec__1_#t~ret17;havoc __utac_acc__Specification4_spec__1_#t~ret17; 405#L153 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~0); 402#L153-1 [2021-08-27 16:17:50,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:50,657 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:17:50,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:50,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000645857] [2021-08-27 16:17:50,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:50,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:50,693 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:50,729 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:50,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:50,738 INFO L82 PathProgramCache]: Analyzing trace with hash -21695257, now seen corresponding path program 1 times [2021-08-27 16:17:50,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:50,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686165534] [2021-08-27 16:17:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:50,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:50,748 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:50,755 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:50,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:50,757 INFO L82 PathProgramCache]: Analyzing trace with hash -6983283, now seen corresponding path program 1 times [2021-08-27 16:17:50,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:50,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156107662] [2021-08-27 16:17:50,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:50,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:50,793 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:50,846 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:18:31,226 WARN L207 SmtUtils]: Spent 40.17 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:19:12,305 WARN L207 SmtUtils]: Spent 20.51 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:19:12,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:19:12 BoogieIcfgContainer [2021-08-27 16:19:12,444 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:19:12,445 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:19:12,445 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:19:12,445 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:19:12,445 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:17:49" (3/4) ... [2021-08-27 16:19:12,447 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:19:12,490 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:19:12,491 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:19:12,492 INFO L168 Benchmark]: Toolchain (without parser) took 84335.27 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 38.0 MB in the beginning and 46.1 MB in the end (delta: -8.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:12,492 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 41.5 MB in the end (delta: 28.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:19:12,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.50 ms. Allocated memory is still 60.8 MB. Free memory was 37.8 MB in the beginning and 35.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:12,493 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.05 ms. Allocated memory is still 60.8 MB. Free memory was 35.4 MB in the beginning and 32.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:12,494 INFO L168 Benchmark]: Boogie Preprocessor took 50.60 ms. Allocated memory is still 60.8 MB. Free memory was 32.3 MB in the beginning and 30.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:12,494 INFO L168 Benchmark]: RCFGBuilder took 869.04 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 30.2 MB in the beginning and 37.9 MB in the end (delta: -7.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:12,495 INFO L168 Benchmark]: BuchiAutomizer took 82927.78 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 37.6 MB in the beginning and 48.2 MB in the end (delta: -10.6 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:12,495 INFO L168 Benchmark]: Witness Printer took 46.04 ms. Allocated memory is still 88.1 MB. Free memory was 48.2 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:19:12,498 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 41.5 MB in the end (delta: 28.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 370.50 ms. Allocated memory is still 60.8 MB. Free memory was 37.8 MB in the beginning and 35.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.05 ms. Allocated memory is still 60.8 MB. Free memory was 35.4 MB in the beginning and 32.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.60 ms. Allocated memory is still 60.8 MB. Free memory was 32.3 MB in the beginning and 30.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 869.04 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 30.2 MB in the beginning and 37.9 MB in the end (delta: -7.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 82927.78 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 37.6 MB in the beginning and 48.2 MB in the end (delta: -10.6 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. * Witness Printer took 46.04 ms. Allocated memory is still 88.1 MB. Free memory was 48.2 MB in the beginning and 46.1 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 6 locations. The remainder module has 118 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 82.8s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 82.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 20.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 118 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 216 SDtfs, 529 SDslu, 50 SDs, 0 SdLazy, 29 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 130.5ms 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: 596]: 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=16203, NULL=0, NULL=1, NULL=0, NULL=16205, NULL=0, NULL=16194, NULL=16189, NULL=0, NULL=0, NULL=16196, methaneLevelCritical=0, NULL=16206, tmp___0=0, NULL=0, tmp=0, NULL=0, NULL=16201, NULL=0, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4dcb3d95=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@31bece4b=0, NULL=0, NULL=0, NULL=0, tmp___0=0, NULL=16191, cleanupTimeShifts=4, NULL=16195, NULL=16197, NULL=16185, NULL=0, systemActive=1, waterLevel=1, NULL=16180, \result=1, NULL=0, NULL=0, NULL=0, NULL=0, NULL=16202, \result=0, NULL=0, NULL=16193, NULL=0, NULL=0, retValue_acc=0, NULL=16207, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=16183, \result=0, NULL=16204, retValue_acc=1, NULL=0, tmp=1, NULL=0, \result=1, NULL=16187, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@20df5fb4=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@52ce939e=0, NULL=16190, tmp=1, NULL=0, NULL=0, NULL=16182, retValue_acc=0, NULL=0, NULL=16188, tmp=1, tmp___2=59, NULL=0, tmp___0=0, splverifierCounter=0, NULL=0, NULL=16184, NULL=16200, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b32cb7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@41fcce76=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34b8c7e0=59, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43c2a7ee=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5e0811fc=0, head=0, tmp=0, NULL=0, NULL=16192, NULL=16181, NULL=16199, NULL=0, NULL=16186, NULL=16198} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L387] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L654] int pumpRunning = 0; [L655] int systemActive = 1; [L824] int cleanupTimeShifts = 4; [L897] int retValue_acc ; [L898] int tmp ; [L200] int retValue_acc ; [L203] retValue_acc = 1 [L204] return (retValue_acc); [L904] tmp = valid_product() [L906] COND TRUE \read(tmp) [L587] int splverifierCounter ; [L588] int tmp ; [L589] int tmp___0 ; [L590] int tmp___1 ; [L591] int tmp___2 ; [L594] splverifierCounter = 0 Loop: [L596] COND TRUE 1 [L598] COND TRUE splverifierCounter < 4 [L604] tmp = __VERIFIER_nondet_int() [L606] COND FALSE !(\read(tmp)) [L614] tmp___0 = __VERIFIER_nondet_int() [L616] COND FALSE !(\read(tmp___0)) [L624] tmp___2 = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp___2) [L661] COND FALSE !(\read(pumpRunning)) [L668] COND TRUE \read(systemActive) [L690] int tmp ; [L693] COND TRUE ! pumpRunning [L805] int retValue_acc ; [L806] int tmp ; [L807] int tmp___0 ; [L129] int retValue_acc ; [L132] COND TRUE waterLevel < 2 [L133] retValue_acc = 1 [L134] return (retValue_acc); [L811] tmp = isHighWaterSensorDry() [L813] COND TRUE \read(tmp) [L814] tmp___0 = 0 [L818] retValue_acc = tmp___0 [L819] return (retValue_acc); [L695] tmp = isHighWaterLevel() [L697] COND FALSE !(\read(tmp)) [L146] int tmp ; [L147] int tmp___0 ; [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); [L151] tmp = getWaterLevel() [L153] COND FALSE !(tmp == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:19:12,567 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...