./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product40.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_spec2_product40.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 a9be1523a6442e0af65427f45826a4bf64f55b34 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:03:46,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:03:46,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:03:46,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:03:46,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:03:46,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:03:46,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:03:46,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:03:46,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:03:46,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:03:46,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:03:46,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:03:46,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:03:46,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:03:46,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:03:46,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:03:46,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:03:46,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:03:46,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:03:46,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:03:46,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:03:46,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:03:46,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:03:46,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:03:46,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:03:46,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:03:46,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:03:46,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:03:46,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:03:46,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:03:46,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:03:46,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:03:46,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:03:46,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:03:46,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:03:46,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:03:46,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:03:46,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:03:46,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:03:46,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:03:46,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:03:46,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:03:46,822 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:03:46,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:03:46,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:03:46,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:03:46,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:03:46,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:03:46,825 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:03:46,825 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:03:46,825 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:03:46,825 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:03:46,826 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:03:46,826 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:03:46,826 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:03:46,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:03:46,827 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:03:46,827 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:03:46,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:03:46,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:03:46,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:03:46,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:03:46,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:03:46,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:03:46,828 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:03:46,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:03:46,838 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:03:46,838 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:03:46,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:03:46,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:03:46,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:03:46,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:03:46,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:03:46,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:03:46,840 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:03:46,840 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9be1523a6442e0af65427f45826a4bf64f55b34 [2021-08-27 16:03:47,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:03:47,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:03:47,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:03:47,144 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:03:47,145 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:03:47,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product40.cil.c [2021-08-27 16:03:47,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a112cb17/6187b2bbe1d74ea6bc6c91911dde501e/FLAG0e64a36f1 [2021-08-27 16:03:47,759 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:03:47,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product40.cil.c [2021-08-27 16:03:47,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a112cb17/6187b2bbe1d74ea6bc6c91911dde501e/FLAG0e64a36f1 [2021-08-27 16:03:48,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a112cb17/6187b2bbe1d74ea6bc6c91911dde501e [2021-08-27 16:03:48,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:03:48,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:03:48,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:03:48,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:03:48,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:03:48,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:03:48" (1/1) ... [2021-08-27 16:03:48,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f1c09d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:48, skipping insertion in model container [2021-08-27 16:03:48,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:03:48" (1/1) ... [2021-08-27 16:03:48,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:03:48,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:03:48,535 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_spec2_product40.cil.c[16678,16691] [2021-08-27 16:03:48,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:03:48,552 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:03:48,641 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_spec2_product40.cil.c[16678,16691] [2021-08-27 16:03:48,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:03:48,676 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:03:48,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:48 WrapperNode [2021-08-27 16:03:48,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:03:48,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:03:48,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:03:48,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:03:48,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:48" (1/1) ... [2021-08-27 16:03:48,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:48" (1/1) ... [2021-08-27 16:03:48,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:03:48,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:03:48,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:03:48,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:03:48,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:48" (1/1) ... [2021-08-27 16:03:48,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:48" (1/1) ... [2021-08-27 16:03:48,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:48" (1/1) ... [2021-08-27 16:03:48,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:48" (1/1) ... [2021-08-27 16:03:48,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:48" (1/1) ... [2021-08-27 16:03:48,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:48" (1/1) ... [2021-08-27 16:03:48,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:48" (1/1) ... [2021-08-27 16:03:48,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:03:48,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:03:48,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:03:48,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:03:48,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:48" (1/1) ... [2021-08-27 16:03:48,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:03:48,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:03:48,874 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 16:03:48,900 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 16:03:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:03:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:03:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:03:48,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:03:49,852 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:03:49,853 INFO L299 CfgBuilder]: Removed 164 assume(true) statements. [2021-08-27 16:03:49,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:03:49 BoogieIcfgContainer [2021-08-27 16:03:49,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:03:49,856 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:03:49,857 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:03:49,860 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:03:49,860 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:03:49,860 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:03:48" (1/3) ... [2021-08-27 16:03:49,861 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@555ce8ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:03:49, skipping insertion in model container [2021-08-27 16:03:49,861 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:03:49,861 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:48" (2/3) ... [2021-08-27 16:03:49,862 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@555ce8ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:03:49, skipping insertion in model container [2021-08-27 16:03:49,862 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:03:49,862 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:03:49" (3/3) ... [2021-08-27 16:03:49,863 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product40.cil.c [2021-08-27 16:03:49,910 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:03:49,911 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:03:49,911 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:03:49,911 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:03:49,911 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:03:49,911 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:03:49,911 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:03:49,912 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:03:49,931 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 114 states, 113 states have (on average 1.5486725663716814) internal successors, (175), 113 states have internal predecessors, (175), 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 16:03:49,961 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-08-27 16:03:49,961 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:03:49,962 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:03:49,967 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:49,967 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:49,967 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:03:49,968 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 114 states, 113 states have (on average 1.5486725663716814) internal successors, (175), 113 states have internal predecessors, (175), 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 16:03:49,975 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-08-27 16:03:49,975 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:03:49,975 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:03:49,976 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:49,976 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:49,985 INFO L791 eck$LassoCheckResult]: Stem: 108#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~string10.base, #t~string10.offset := #Ultimate.allocOnStack(13);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string12.base, #t~string12.offset, 1);call write~init~int(77, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(101, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(116, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(104, #t~string12.base, 4 + #t~string12.offset, 1);call write~init~int(58, #t~string12.base, 5 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 6 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string14.base, #t~string14.offset, 1);call write~init~int(82, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(73, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(84, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 4 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(75, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string18.base, #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 1 + #t~string18.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(13);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(110, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string33.base, #t~string33.offset, 1);call write~init~int(80, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(117, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(109, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(112, #t~string33.base, 4 + #t~string33.offset, 1);call write~init~int(58, #t~string33.base, 5 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 6 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(110, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 3 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string39.base, #t~string39.offset, 1);call write~init~int(32, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 34#L-1true havoc main_#res;havoc main_#t~ret78, main_~retValue_acc~9, main_~tmp~8;havoc main_~retValue_acc~9;havoc main_~tmp~8; 105#L958true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 6#L966true main_#t~ret78 := valid_product_#res;main_~tmp~8 := main_#t~ret78;havoc main_#t~ret78; 109#L922true assume 0 != main_~tmp~8; 71#L895true ~methAndRunningLastTime~0 := 0; 96#L51true havoc test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 44#L62-1true [2021-08-27 16:03:49,986 INFO L793 eck$LassoCheckResult]: Loop: 44#L62-1true assume !false; 45#L199true assume test_~splverifierCounter~0 < 4; 97#L200true test_~tmp~1 := test_#t~nondet19;havoc test_#t~nondet19; 98#L208true assume !(0 != test_~tmp~1); 46#L208-1true test_~tmp___0~1 := test_#t~nondet20;havoc test_#t~nondet20; 35#L218true assume !(0 != test_~tmp___0~1); 36#L218-1true test_~tmp___2~0 := test_#t~nondet21;havoc test_#t~nondet21; 80#L228true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 115#L236-1true assume !(0 != ~pumpRunning~0); 17#L267true assume !(0 != ~systemActive~0); 83#L274true havoc __utac_acc__Specification2_spec__2_#t~ret7, __utac_acc__Specification2_spec__2_#t~ret8, __utac_acc__Specification2_spec__2_~tmp~0, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~0;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 65#L133-1true __utac_acc__Specification2_spec__2_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~0 := __utac_acc__Specification2_spec__2_#t~ret7;havoc __utac_acc__Specification2_spec__2_#t~ret7; 113#L62true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~0);~methAndRunningLastTime~0 := 0; 44#L62-1true [2021-08-27 16:03:49,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:49,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:03:49,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:49,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671677716] [2021-08-27 16:03:49,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:50,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:50,218 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:03:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:50,332 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:03:50,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:50,340 INFO L82 PathProgramCache]: Analyzing trace with hash 13835412, now seen corresponding path program 1 times [2021-08-27 16:03:50,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:50,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436953172] [2021-08-27 16:03:50,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:50,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:03:50,415 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 16:03:50,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:03:50,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436953172] [2021-08-27 16:03:50,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436953172] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:03:50,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:03:50,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:03:50,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096700464] [2021-08-27 16:03:50,422 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:03:50,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:03:50,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:03:50,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:03:50,439 INFO L87 Difference]: Start difference. First operand has 114 states, 113 states have (on average 1.5486725663716814) internal successors, (175), 113 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:03:50,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:03:50,516 INFO L93 Difference]: Finished difference Result 221 states and 325 transitions. [2021-08-27 16:03:50,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:03:50,518 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 221 states and 325 transitions. [2021-08-27 16:03:50,523 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 142 [2021-08-27 16:03:50,528 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 221 states to 207 states and 310 transitions. [2021-08-27 16:03:50,529 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 207 [2021-08-27 16:03:50,530 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 207 [2021-08-27 16:03:50,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 207 states and 310 transitions. [2021-08-27 16:03:50,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:03:50,532 INFO L681 BuchiCegarLoop]: Abstraction has 207 states and 310 transitions. [2021-08-27 16:03:50,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states and 310 transitions. [2021-08-27 16:03:50,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2021-08-27 16:03:50,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 205 states have (on average 1.497560975609756) internal successors, (307), 204 states have internal predecessors, (307), 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 16:03:50,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 307 transitions. [2021-08-27 16:03:50,571 INFO L704 BuchiCegarLoop]: Abstraction has 205 states and 307 transitions. [2021-08-27 16:03:50,571 INFO L587 BuchiCegarLoop]: Abstraction has 205 states and 307 transitions. [2021-08-27 16:03:50,571 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:03:50,571 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 205 states and 307 transitions. [2021-08-27 16:03:50,574 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 140 [2021-08-27 16:03:50,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:03:50,574 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:03:50,575 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:50,575 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:50,575 INFO L791 eck$LassoCheckResult]: Stem: 472#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~string10.base, #t~string10.offset := #Ultimate.allocOnStack(13);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string12.base, #t~string12.offset, 1);call write~init~int(77, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(101, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(116, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(104, #t~string12.base, 4 + #t~string12.offset, 1);call write~init~int(58, #t~string12.base, 5 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 6 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string14.base, #t~string14.offset, 1);call write~init~int(82, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(73, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(84, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 4 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(75, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string18.base, #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 1 + #t~string18.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(13);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(110, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string33.base, #t~string33.offset, 1);call write~init~int(80, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(117, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(109, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(112, #t~string33.base, 4 + #t~string33.offset, 1);call write~init~int(58, #t~string33.base, 5 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 6 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(110, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 3 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string39.base, #t~string39.offset, 1);call write~init~int(32, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 398#L-1 havoc main_#res;havoc main_#t~ret78, main_~retValue_acc~9, main_~tmp~8;havoc main_~retValue_acc~9;havoc main_~tmp~8; 399#L958 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 346#L966 main_#t~ret78 := valid_product_#res;main_~tmp~8 := main_#t~ret78;havoc main_#t~ret78; 347#L922 assume 0 != main_~tmp~8; 448#L895 ~methAndRunningLastTime~0 := 0; 449#L51 havoc test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 389#L62-1 [2021-08-27 16:03:50,575 INFO L793 eck$LassoCheckResult]: Loop: 389#L62-1 assume !false; 489#L199 assume test_~splverifierCounter~0 < 4; 465#L200 test_~tmp~1 := test_#t~nondet19;havoc test_#t~nondet19; 466#L208 assume !(0 != test_~tmp~1); 487#L208-1 test_~tmp___0~1 := test_#t~nondet20;havoc test_#t~nondet20; 486#L218 assume !(0 != test_~tmp___0~1); 484#L218-1 test_~tmp___2~0 := test_#t~nondet21;havoc test_#t~nondet21; 483#L228 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 429#L236-1 assume !(0 != ~pumpRunning~0); 366#L267 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret24, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 367#L325 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret23, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 382#L299-1 assume !(0 == ~pumpRunning~0); 384#L274 havoc __utac_acc__Specification2_spec__2_#t~ret7, __utac_acc__Specification2_spec__2_#t~ret8, __utac_acc__Specification2_spec__2_~tmp~0, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~0;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 440#L133-1 __utac_acc__Specification2_spec__2_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~0 := __utac_acc__Specification2_spec__2_#t~ret7;havoc __utac_acc__Specification2_spec__2_#t~ret7; 441#L62 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~0);~methAndRunningLastTime~0 := 0; 389#L62-1 [2021-08-27 16:03:50,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:50,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:03:50,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:50,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910994471] [2021-08-27 16:03:50,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:50,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:50,613 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:03:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:50,657 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:03:50,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:50,658 INFO L82 PathProgramCache]: Analyzing trace with hash -2029358293, now seen corresponding path program 1 times [2021-08-27 16:03:50,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:50,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994905838] [2021-08-27 16:03:50,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:50,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:03:50,679 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 16:03:50,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:03:50,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994905838] [2021-08-27 16:03:50,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994905838] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:03:50,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:03:50,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:03:50,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686158452] [2021-08-27 16:03:50,681 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:03:50,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:03:50,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:03:50,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:03:50,682 INFO L87 Difference]: Start difference. First operand 205 states and 307 transitions. cyclomatic complexity: 105 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 16:03:50,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:03:50,821 INFO L93 Difference]: Finished difference Result 294 states and 419 transitions. [2021-08-27 16:03:50,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:03:50,822 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 294 states and 419 transitions. [2021-08-27 16:03:50,825 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 207 [2021-08-27 16:03:50,827 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 294 states to 294 states and 419 transitions. [2021-08-27 16:03:50,828 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 294 [2021-08-27 16:03:50,829 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 294 [2021-08-27 16:03:50,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 294 states and 419 transitions. [2021-08-27 16:03:50,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:03:50,830 INFO L681 BuchiCegarLoop]: Abstraction has 294 states and 419 transitions. [2021-08-27 16:03:50,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states and 419 transitions. [2021-08-27 16:03:50,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2021-08-27 16:03:50,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 294 states have (on average 1.4251700680272108) internal successors, (419), 293 states have internal predecessors, (419), 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 16:03:50,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 419 transitions. [2021-08-27 16:03:50,863 INFO L704 BuchiCegarLoop]: Abstraction has 294 states and 419 transitions. [2021-08-27 16:03:50,863 INFO L587 BuchiCegarLoop]: Abstraction has 294 states and 419 transitions. [2021-08-27 16:03:50,864 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:03:50,864 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 294 states and 419 transitions. [2021-08-27 16:03:50,866 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 207 [2021-08-27 16:03:50,866 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:03:50,866 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:03:50,867 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:50,867 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] [2021-08-27 16:03:50,867 INFO L791 eck$LassoCheckResult]: Stem: 969#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~string10.base, #t~string10.offset := #Ultimate.allocOnStack(13);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string12.base, #t~string12.offset, 1);call write~init~int(77, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(101, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(116, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(104, #t~string12.base, 4 + #t~string12.offset, 1);call write~init~int(58, #t~string12.base, 5 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 6 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string14.base, #t~string14.offset, 1);call write~init~int(82, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(73, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(84, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 4 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(75, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 2 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string18.base, #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 1 + #t~string18.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(13);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(110, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string33.base, #t~string33.offset, 1);call write~init~int(80, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(117, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(109, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(112, #t~string33.base, 4 + #t~string33.offset, 1);call write~init~int(58, #t~string33.base, 5 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 6 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(110, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 3 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string39.base, #t~string39.offset, 1);call write~init~int(32, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 901#L-1 havoc main_#res;havoc main_#t~ret78, main_~retValue_acc~9, main_~tmp~8;havoc main_~retValue_acc~9;havoc main_~tmp~8; 902#L958 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 851#L966 main_#t~ret78 := valid_product_#res;main_~tmp~8 := main_#t~ret78;havoc main_#t~ret78; 852#L922 assume 0 != main_~tmp~8; 948#L895 ~methAndRunningLastTime~0 := 0; 949#L51 havoc test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 962#L62-1 [2021-08-27 16:03:50,867 INFO L793 eck$LassoCheckResult]: Loop: 962#L62-1 assume !false; 1108#L199 assume test_~splverifierCounter~0 < 4; 963#L200 test_~tmp~1 := test_#t~nondet19;havoc test_#t~nondet19; 964#L208 assume !(0 != test_~tmp~1); 870#L208-1 test_~tmp___0~1 := test_#t~nondet20;havoc test_#t~nondet20; 903#L218 assume !(0 != test_~tmp___0~1); 905#L218-1 test_~tmp___2~0 := test_#t~nondet21;havoc test_#t~nondet21; 906#L228 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 932#L236-1 assume !(0 != ~pumpRunning~0); 973#L267 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret24, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1109#L325 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret23, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 1102#L299-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret42, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1107#L173-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1106#L178-1 isHighWaterLevel_#t~ret42 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret42;havoc isHighWaterLevel_#t~ret42; 1105#L427-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~2 := 0; 1104#L427-5 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 1103#L433-1 processEnvironment__wrappee__highWaterSensor_#t~ret23 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret23;havoc processEnvironment__wrappee__highWaterSensor_#t~ret23; 959#L303-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 960#L274 havoc __utac_acc__Specification2_spec__2_#t~ret7, __utac_acc__Specification2_spec__2_#t~ret8, __utac_acc__Specification2_spec__2_~tmp~0, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~0;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 1112#L133-1 __utac_acc__Specification2_spec__2_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~0 := __utac_acc__Specification2_spec__2_#t~ret7;havoc __utac_acc__Specification2_spec__2_#t~ret7; 1111#L62 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~0);~methAndRunningLastTime~0 := 0; 962#L62-1 [2021-08-27 16:03:50,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:50,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:03:50,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:50,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086840611] [2021-08-27 16:03:50,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:50,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:50,894 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:03:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:50,928 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:03:50,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:50,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1583413303, now seen corresponding path program 1 times [2021-08-27 16:03:50,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:50,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707653539] [2021-08-27 16:03:50,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:50,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:50,950 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:03:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:50,956 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:03:50,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:50,956 INFO L82 PathProgramCache]: Analyzing trace with hash -938412367, now seen corresponding path program 1 times [2021-08-27 16:03:50,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:50,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620148614] [2021-08-27 16:03:50,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:50,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:51,016 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:03:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:51,096 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:35,456 WARN L207 SmtUtils]: Spent 43.85 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:05:21,530 WARN L207 SmtUtils]: Spent 23.05 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:05:21,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:05:21 BoogieIcfgContainer [2021-08-27 16:05:21,610 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:05:21,611 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:05:21,611 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:05:21,611 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:05:21,612 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:03:49" (3/4) ... [2021-08-27 16:05:21,614 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:05:21,650 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:05:21,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:05:21,652 INFO L168 Benchmark]: Toolchain (without parser) took 93428.78 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 55.3 MB in the beginning and 76.8 MB in the end (delta: -21.5 MB). Peak memory consumption was 69.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:21,652 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 71.3 MB. Free memory is still 53.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:05:21,652 INFO L168 Benchmark]: CACSL2BoogieTranslator took 455.76 ms. Allocated memory is still 71.3 MB. Free memory was 55.0 MB in the beginning and 49.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:21,653 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.51 ms. Allocated memory is still 71.3 MB. Free memory was 49.3 MB in the beginning and 45.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:21,653 INFO L168 Benchmark]: Boogie Preprocessor took 75.04 ms. Allocated memory is still 71.3 MB. Free memory was 45.9 MB in the beginning and 43.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:21,654 INFO L168 Benchmark]: RCFGBuilder took 1010.26 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 43.3 MB in the beginning and 45.3 MB in the end (delta: -2.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:21,654 INFO L168 Benchmark]: BuchiAutomizer took 91754.01 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 45.3 MB in the beginning and 22.2 MB in the end (delta: 23.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:21,654 INFO L168 Benchmark]: Witness Printer took 39.85 ms. Allocated memory is still 104.9 MB. Free memory was 22.2 MB in the beginning and 76.8 MB in the end (delta: -54.6 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:21,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 71.3 MB. Free memory is still 53.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 455.76 ms. Allocated memory is still 71.3 MB. Free memory was 55.0 MB in the beginning and 49.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.51 ms. Allocated memory is still 71.3 MB. Free memory was 49.3 MB in the beginning and 45.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.04 ms. Allocated memory is still 71.3 MB. Free memory was 45.9 MB in the beginning and 43.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1010.26 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 43.3 MB in the beginning and 45.3 MB in the end (delta: -2.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 91754.01 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 45.3 MB in the beginning and 22.2 MB in the end (delta: 23.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 16.1 GB. * Witness Printer took 39.85 ms. Allocated memory is still 104.9 MB. Free memory was 22.2 MB in the beginning and 76.8 MB in the end (delta: -54.6 MB). Peak memory consumption was 2.2 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 294 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 91.6s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 91.2s. 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 61.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 294 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 322 SDtfs, 276 SDslu, 218 SDs, 0 SdLazy, 41 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 120.0ms 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: 198]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=31698} State at position 1 is {NULL=0, NULL=0, NULL=76538, NULL=0, NULL=31698, NULL=76527, NULL=0, NULL=31701, methaneLevelCritical=0, retValue_acc=1, retValue_acc=0, NULL=76528, tmp___1=0, NULL=76537, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4c7d2879=0, NULL=45530, cleanupTimeShifts=4, tmp=0, NULL=76531, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@b5b9ce2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@8e61dcb=0, NULL=0, waterLevel=1, NULL=0, \result=1, head=0, pumpRunning=0, NULL=76536, retValue_acc=1, NULL=0, NULL=0, NULL=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@24293295=0, \result=1, NULL=62877, NULL=0, NULL=0, tmp=1, NULL=76539, NULL=0, NULL=0, NULL=0, tmp___0=0, methAndRunningLastTime=0, NULL=76532, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44d6f8e0=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1eb517a=69, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@720fe602=0, NULL=76530, NULL=0, NULL=0, NULL=0, NULL=62878, retValue_acc=0, NULL=0, NULL=0, NULL=76524, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48f3bc60=0, retValue_acc=0, NULL=76526, NULL=45529, tmp___0=0, NULL=0, NULL=62876, NULL=0, NULL=0, NULL=31700, tmp=0, NULL=0, NULL=0, systemActive=1, NULL=0, NULL=76534, \result=0, NULL=0, NULL=76542, NULL=76529, \result=0, NULL=62879, NULL=0, NULL=0, NULL=76533, tmp___0=0, NULL=76541, tmp___2=69, splverifierCounter=0, NULL=0, \result=0, NULL=76540, NULL=76535, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3660ea61=0, NULL=31699, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@30c43898=0, NULL=76525} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L45] int methAndRunningLastTime ; [L90] int waterLevel = 1; [L91] int methaneLevelCritical = 0; [L260] int pumpRunning = 0; [L261] int systemActive = 1; [L630] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L836] int cleanupTimeShifts = 4; [L913] int retValue_acc ; [L914] int tmp ; [L962] int retValue_acc ; [L965] retValue_acc = 1 [L966] return (retValue_acc); [L920] tmp = valid_product() [L922] COND TRUE \read(tmp) [L50] methAndRunningLastTime = 0 [L189] int splverifierCounter ; [L190] int tmp ; [L191] int tmp___0 ; [L192] int tmp___1 ; [L193] int tmp___2 ; [L196] splverifierCounter = 0 Loop: [L198] COND TRUE 1 [L200] COND TRUE splverifierCounter < 4 [L206] tmp = __VERIFIER_nondet_int() [L208] COND FALSE !(\read(tmp)) [L216] tmp___0 = __VERIFIER_nondet_int() [L218] COND FALSE !(\read(tmp___0)) [L226] tmp___2 = __VERIFIER_nondet_int() [L228] COND TRUE \read(tmp___2) [L456] systemActive = 1 [L267] COND FALSE !(\read(pumpRunning)) [L274] COND TRUE \read(systemActive) [L322] int tmp ; [L325] COND FALSE !(\read(pumpRunning)) [L296] int tmp ; [L299] COND TRUE ! pumpRunning [L419] int retValue_acc ; [L420] int tmp ; [L421] int tmp___0 ; [L170] int retValue_acc ; [L173] COND TRUE waterLevel < 2 [L174] retValue_acc = 1 [L175] return (retValue_acc); [L425] tmp = isHighWaterSensorDry() [L427] COND TRUE \read(tmp) [L428] tmp___0 = 0 [L432] retValue_acc = tmp___0 [L433] return (retValue_acc); [L301] tmp = isHighWaterLevel() [L303] COND FALSE !(\read(tmp)) [L55] int tmp ; [L56] int tmp___0 ; [L129] int retValue_acc ; [L132] retValue_acc = methaneLevelCritical [L133] return (retValue_acc); [L60] tmp = isMethaneLevelCritical() [L62] COND FALSE !(\read(tmp)) [L78] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:05:21,728 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...